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ApoE4 genotype is the most prevalent and also clinically most important risk factor for late-onset Alzheimer’s disease ( AD ) . Available evidence suggests that the root cause for this increased risk is a trafficking defect at the level of the early endosome . ApoE4 differs from the most common ApoE3 isoform by a singl... | Alzheimer’s disease is a degenerative condition that destroys connections between brain cells leading to memory loss , confusion and difficulties in thinking . Apolipoprotein E is a protein that carries fatty substances called lipids and cholesterol around the brain , and plays an important role in repair mechanisms . ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Reversal of ApoE4-induced recycling block as a novel prevention approach for Alzheimer’s disease |
Repetitive proteins are thought to have arisen through the amplification of subdomain-sized peptides . Many of these originated in a non-repetitive context as cofactors of RNA-based replication and catalysis , and required the RNA to assume their active conformation . In search of the origins of one of the most widespr... | All life is built upon the chemical activity of proteins . For this activity , proteins need to fold into specific 3D structures . Protein folding is complicated and easily disrupted , and its evolutionary origin remains poorly understood . A possibility is that folded proteins arose through different genetic processes... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology"
] | 2016 | Origin of a folded repeat protein from an intrinsically disordered ancestor |
Sexual maturation must occur on a controlled developmental schedule . In mammals , Makorin3 ( MKRN3 ) and the miRNA regulators LIN28A/B are key regulators of this process , but how they act is unclear . In C . elegans , sexual maturation of the nervous system includes the functional remodeling of postmitotic neurons an... | Most animals develop from juveniles , which cannot reproduce , to sexually mature adults . The most obvious signs of this transition are changes in body shape and size . However , changes also take place in the brain that enable the animals to adapt their behavior to the demands of adulthood . For example , fully fed a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"neuroscience"
] | 2019 | The Makorin lep-2 and the lncRNA lep-5 regulate lin-28 to schedule sexual maturation of the C. elegans nervous system |
The human cytomegalovirus ( HCMV ) US12 family consists of ten sequentially arranged genes ( US12-21 ) with poorly characterized function . We now identify novel natural killer ( NK ) cell evasion functions for four members: US12 , US14 , US18 and US20 . Using a systematic multiplexed proteomics approach to quantify ~1... | Cytomegalovirus ( CMV ) is one of eight herpesviruses that can infect humans . Most people will at some point become infected with CMV , yet the virus tends only to cause serious disease in people whose immune system is not working properly . Individuals living with HIV/AIDS and organ transplant recipients ( who have t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"immunology",
"and",
"inflammation"
] | 2017 | Control of immune ligands by members of a cytomegalovirus gene expansion suppresses natural killer cell activation |
A hallmark of Spemann organizer function is its expression of Wnt antagonists that regulate axial embryonic patterning . Here we identify the tumor suppressor Protein tyrosine phosphatase receptor-type kappa ( PTPRK ) , as a Wnt inhibitor in human cancer cells and in the Spemann organizer of Xenopus embryos . We show t... | How human and other animals form distinct head- and tail-ends as embryos is a fundamental question in biology . The fertilized eggs of the African clawed frog ( also known as Xenopus ) become embryos and grow into tadpoles within two days . This rapid growth makes Xenopus particularly suitable as a model to study how a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2020 | The tumor suppressor PTPRK promotes ZNRF3 internalization and is required for Wnt inhibition in the Spemann organizer |
Adaptive decision-making uses information gained when exploring alternative options to decide whether to update the current choice strategy . Magnocellular mediodorsal thalamus ( MDmc ) supports adaptive decision-making , but its causal contribution is not well understood . Monkeys with excitotoxic MDmc damage were tes... | A small structure deep inside the brain , called the mediodorsal thalamus , is a critical part of a brain network that is important for learning new information and making decisions . However , the exact role of this brain area is still not understood , and there is little evidence showing that this area is actually ne... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Critical role for the mediodorsal thalamus in permitting rapid reward-guided updating in stochastic reward environments |
Nutrient uptake by roots often involves substrate-dependent regulated nutrient transporters . For robust uptake , the system requires a regulatory circuit within cells and a collective , coordinated behaviour across the tissue . A paradigm for such systems is boron uptake , known for its directional transport and homeo... | Every multicellular organism , including all plants and animals , faces the challenge of taking up the nutrients it needs and distributing them throughout its body . Plants absorb many nutrients including nitrogen and boron from the soil into their roots , often using tightly controlled processes that require energy to... | [
"Abstract",
"Introduction",
"materials",
"and",
"methods"
] | [
"plant",
"biology",
"computational",
"and",
"systems",
"biology"
] | 2017 | Rapid transporter regulation prevents substrate flow traffic jams in boron transport |
The postembryonic brain exhibits experience-dependent development , in which sensory experience guides normal brain growth . This neuroplasticity is thought to occur primarily through structural and functional changes in pre-existing neurons . Whether neurogenesis also mediates the effects of experience on brain growth... | Sensory experiences early in life help the brain to grow and develop . For example , raising animals in complete darkness stops the visual areas of their brain from forming properly . Previous studies have shown that sensory input helps to strengthen the connections between already existing brain cells , but it is uncl... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"neuroscience"
] | 2018 | Movement maintains forebrain neurogenesis via peripheral neural feedback in larval zebrafish |
Molecular recognition reagents are key tools for understanding biological processes and are used universally by scientists to study protein expression , localisation and interactions . Antibodies remain the most widely used of such reagents and many show excellent performance , although some are poorly characterised or... | Many of the molecules that are essential for life are too small to be visible inside cells . So , scientists use large complex proteins called antibodies that bind to these molecules to detect whether they are present and show where they are in a cell . As well as being useful tools in experiments , these antibodies ca... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"cell",
"biology",
"tools",
"and",
"resources"
] | 2017 | Affimer proteins are versatile and renewable affinity reagents |
Motor contagions refer to implicit effects on one's actions induced by observed actions . Motor contagions are believed to be induced simply by action observation and cause an observer's action to become similar to the action observed . In contrast , here we report a new motor contagion that is induced only when the ob... | Watching sports sometimes causes people to unintentionally move in the same way as the athlete they are observing . This type of unconscious mimicry is called a motor contagion . Observing everyday actions can also trigger motor contagion , and plays an important role in social interactions . So far , studies have focu... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Prediction error induced motor contagions in human behaviors |
CD8+ T cell anergy is a critical mechanism of peripheral tolerance , poorly investigated in response to immunotherapy . Here , using a pancreatic islet allograft model and CD3 antibody therapy , we showed , by single cell gene profiling , that intragraft CD8+ lymphocytes coexpressing granzyme B and perforin were select... | The immune system is always on guard for signs of infection or cells that have become diseased . When these signs are identified , a subset of white blood cells called CD8+ T cells leap into action , multiply in number and then act to eliminate the potential threat . While this response is essential to fighting off inf... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2016 | TGFβ-dependent expression of PD-1 and PD-L1 controls CD8+ T cell anergy in transplant tolerance |
Information flow through neural circuits is determined by the nature of the synapses linking the subtypes of neurons . How neurons acquire features distinct to each synapse remains unknown . We show that the transcription factor Mafb drives the formation of auditory ribbon synapses , which are specialized for rapid tra... | Different types of neurons in the nervous system communicate with each other through different types of synapses . In the auditory system , for example , it is essential for the timing of signals to be preserved as they are sent from the ear to the brain , and this places special demands on the synapses in this part of... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"neuroscience"
] | 2013 | A Gata3–Mafb transcriptional network directs post-synaptic differentiation in synapses specialized for hearing |
When people anticipate uncertain future outcomes , they often prefer to know their fate in advance . Inspired by an idea in behavioral economics that the anticipation of rewards is itself attractive , we hypothesized that this preference of advance information arises because reward prediction errors carried by such inf... | People , pigeons and monkeys often want to know in advance whether they will receive a reward in the future . This behaviour is irrational when individuals pay for costly information that makes no difference to an eventual outcome . One explanation is that individuals seek information because anticipating reward has he... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | The modulation of savouring by prediction error and its effects on choice |
Social cellular aggregation or multicellular organization pose increased risk of transmission of infections through the system upon infection of a single cell . The generality of the evolutionary responses to this outside of Metazoa remains unclear . We report the discovery of several thematically unified , remarkable ... | Bacteria are the most numerous lifeforms on the planet . Most bacteria live as single cells that grow and multiply independently within larger communities of microbes . However , some bacterial cells assemble to form more complex structures where individual cells might perform distinct roles . Such bacteria are referre... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"genetics",
"and",
"genomics"
] | 2020 | Highly regulated, diversifying NTP-dependent biological conflict systems with implications for the emergence of multicellularity |
Nodal is considered the key inducer of mesendoderm in vertebrate embryos and embryonic stem cells . Other TGF-beta-related signals , such as Vg1/Dvr1/Gdf3 , have also been implicated in this process but their roles have been unclear or controversial . Here we report that zebrafish embryos without maternally provided vg... | All animals begin life as just one cell – a fertilized egg . In order to make a recognizable adult , each embryo needs to make the three types of tissue that will eventually form all of the organs: endoderm , which will form the internal organs; mesoderm , which will form the muscle and bones; and ectoderm , which will... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2017 | Vg1-Nodal heterodimers are the endogenous inducers of mesendoderm |
Prairie vole breeder pairs form monogamous pair bonds , which are maintained through the expression of selective aggression toward novel conspecifics . Here , we utilize behavioral and anatomical techniques to extend the current understanding of neural mechanisms that mediate pair bond maintenance . For both sexes , we... | The bond between parents is one of the most important social relationships that humans have . Prairie voles are one of the few other mammals whose individuals also form long-term social bonds after having offspring together , so they have frequently been used to study the brain mechanisms that underlie such bonding . H... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Dopamine and opioid systems interact within the nucleus accumbens to maintain monogamous pair bonds |
Highly polymorphic major histocompatibility complex ( MHC ) molecules are at the heart of adaptive immune responses , playing crucial roles in many kinds of disease and in vaccination . We report that breadth of peptide presentation and level of cell surface expression of class I molecules are inversely correlated in b... | Our immune system has the remarkable ability to recognize and destroy damaged cells or invading microbes while leaving the healthy cells in the body alone . Groups of proteins called ‘MHC class I molecules’ play important roles in defence against invading microbes . If a cell becomes infected with a virus or a bacteriu... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2015 | Expression levels of MHC class I molecules are inversely correlated with promiscuity of peptide binding |
The presumptive altered dynamics of transient molecular interactions in vivo contributing to neurodegenerative diseases have remained elusive . Here , using single-molecule localization microscopy , we show that disease-inducing Huntingtin ( mHtt ) protein fragments display three distinct dynamic states in living cells... | Huntington's disease belongs to a group of human genetic disorders in which faulty proteins cause nerve cells to progressively die . All proteins are made from building blocks called amino acids , and these diseases are collectively called PolyQ expansion diseases because the faulty proteins usually have an abnormally ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | Real-time imaging of Huntingtin aggregates diverting target search and gene transcription |
Activation of heterotrimeric G proteins is a key step in many signaling cascades . However , a complete mechanism for this process , which requires allosteric communication between binding sites that are ~30 Å apart , remains elusive . We construct an atomically detailed model of G protein activation by combining three... | Cells communicate with each other by exchanging chemical signals , which allow them to coordinate their activities and relay important information about their environment . Often , cells secrete specific signals into their surroundings , which are then picked up by a receiving cell that has the right receptors to recog... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics",
"computational",
"and",
"systems",
"biology"
] | 2018 | Simulation of spontaneous G protein activation reveals a new intermediate driving GDP unbinding |
Animals rely on highly sensitive thermoreceptors to seek out optimal temperatures , but the molecular mechanisms of thermosensing are not well understood . The Dorsal Organ Cool Cells ( DOCCs ) of the Drosophila larva are a set of exceptionally thermosensitive neurons critical for larval cool avoidance . Here , we show... | Animals need to be able to sense temperatures for a number of reasons . For example , this ability allows animals to avoid conditions that are either too hot or too cold , and to maintain an optimal body temperature . Most animals detect temperature via nerve cells called thermoreceptors . These sensors are often extre... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | The Ionotropic Receptors IR21a and IR25a mediate cool sensing in Drosophila |
Sensory deprivation during the post-natal ‘critical period’ leads to structural reorganization of the developing visual cortex . In adulthood , the visual cortex retains some flexibility and adapts to sensory deprivation . Here we show that short-term ( 2 hr ) monocular deprivation in adult humans boosts the BOLD respo... | The world around us changes all the time , and the brain must adapt to these changes . This process , known as neuroplasticity , peaks during development . Abnormal sensory input early in life can therefore cause lasting changes to the structure of the brain . One example of this is amblyopia or ‘lazy eye’ . Infants wh... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Response to short-term deprivation of the human adult visual cortex measured with 7T BOLD |
The parents' phenotype , or the environment they create for their young , can have long-lasting effects on their offspring , with profound evolutionary consequences . Yet , virtually no work has considered how such parental effects might change the adaptive value of behavioural traits expressed by offspring upon reachi... | The burying beetle is an unusual insect in that both the father and the mother take care of their young larvae . They do this by providing food in the form of a small dead animal , such as a mouse , from which they diligently remove any fur or feathers , and by defending both the food and the larvae from rivals . These... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"ecology"
] | 2015 | Parental effects alter the adaptive value of an adult behavioural trait |
A major puzzle in biology is how mammalian sperm maintain the correct swimming direction during various phases of the sexual reproduction process . Whilst chemotaxis may dominate near the ovum , it is unclear which cues guide spermatozoa on their long journey towards the egg . Hypothesized mechanisms range from perista... | A sperm cell must complete a long and taxing journey to stand a chance of fertilising an egg cell . This quest covers a distance that is thousands of times longer than the length of a sperm cell . It also passes through the diverse environments of the cervix , the uterus and , finally , the oviduct , where there might ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"physics",
"of",
"living",
"systems"
] | 2014 | Rheotaxis facilitates upstream navigation of mammalian sperm cells |
Antigen Ki-67 is a nuclear protein expressed in proliferating mammalian cells . It is widely used in cancer histopathology but its functions remain unclear . Here , we show that Ki-67 controls heterochromatin organisation . Altering Ki-67 expression levels did not significantly affect cell proliferation in vivo . Ki-67... | Living cells divide in two to produce new cells . In mammals , cell division is strictly controlled so that only certain groups of cells in the body are actively dividing at any time . However , some cells may escape these controls so that they divide rapidly and form tumors . A protein called Ki-67 is only produced in... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2016 | The cell proliferation antigen Ki-67 organises heterochromatin |
Severe falciparum malaria has substantially affected human evolution . Genetic association studies of patients with clinically defined severe malaria and matched population controls have helped characterise human genetic susceptibility to severe malaria , but phenotypic imprecision compromises discovered associations .... | In areas of sub-Saharan Africa where malaria is common , most people are frequently exposed to the bites of mosquitoes carrying malaria parasites , so they often have malaria parasites in their blood . Young children , who have not yet built up strong immunity against malaria , often fall ill with severe malaria , a li... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"epidemiology",
"and",
"global",
"health",
"genetics",
"and",
"genomics"
] | 2021 | Improving statistical power in severe malaria genetic association studies by augmenting phenotypic precision |
The diversity of life on Earth is a result of continual innovations in molecular networks influencing morphology and physiology . Plant specialized metabolism produces hundreds of thousands of compounds , offering striking examples of these innovations . To understand how this novelty is generated , we investigated the... | There are about 300 , 000 species of plant on Earth , which together produce over a million different small molecules called metabolites . Plants use many of these molecules to grow , to communicate with each other or to defend themselves against pests and disease . Humans have co-opted many of the same molecules as we... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"plant",
"biology",
"evolutionary",
"biology"
] | 2017 | Evolutionary routes to biochemical innovation revealed by integrative analysis of a plant-defense related specialized metabolic pathway |
The hippocampal–entorhinal system encodes a map of space that guides spatial navigation . Goal-directed behaviour outside of spatial navigation similarly requires a representation of abstract forms of relational knowledge . This information relies on the same neural system , but it is not known whether the organisation... | To help us navigate , the brain encodes information about the positions of landmarks in space in a series of maps . These maps are housed by two neighbouring brain regions called the hippocampus and entorhinal cortex . These regions also encode information about non-spatial relationships , for example , between two eve... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2017 | A map of abstract relational knowledge in the human hippocampal–entorhinal cortex |
The visual responses of vertebrates are sensitive to the overall composition of retinal interneurons including amacrine cells , which tune the activity of the retinal circuitry . The expression of Paired-homeobox 6 ( PAX6 ) is regulated by multiple cis-DNA elements including the intronic α-enhancer , which is active in... | The retina is a light-sensitive layer of tissue that lines the inside of the eye . This tissue is highly organized and comprises a variety of different nerve cells , including amacrine cells . Together , these cells process incoming light and then trigger electrical signals that travel to the brain , where they are tra... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"neuroscience"
] | 2017 | The LIM protein complex establishes a retinal circuitry of visual adaptation by regulating Pax6 α-enhancer activity |
Experience and training have been shown to facilitate our ability to extract and discriminate meaningful patterns from cluttered environments . Yet , the human brain mechanisms that mediate our ability to learn by suppressing noisy and irrelevant signals remain largely unknown . To test the role of suppression in perce... | When searching for a friend in the crowd or telling identical twins apart , your visual system must solve a complex puzzle . It must ignore all irrelevant information ( e . g . , unfamiliar faces in the crowd ) and focus on key features ( e . g . , your friend’s familiar face ) that will allow you to make a decision . ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | GABA, not BOLD, reveals dissociable learning-dependent plasticity mechanisms in the human brain |
The molecular underpinnings of antibiotic resistance are increasingly understood , but less is known about how these molecular events influence microbial dynamics on the population scale . Here , we show that the dynamics of E . faecalis communities exposed to antibiotics can be surprisingly rich , revealing scenarios ... | Antibiotic resistance is a threat to human and animal health worldwide . Although we rely on antibiotics to treat diseases caused by bacteria , such as tuberculosis , some bacteria are already resistant to many of the drugs available . Understanding the basis of resistance is crucial for developing new antibiotics , an... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"physics",
"of",
"living",
"systems",
"microbiology",
"and",
"infectious",
"disease"
] | 2020 | Delayed antibiotic exposure induces population collapse in enterococcal communities with drug-resistant subpopulations |
Information processing in the sensory periphery is shaped by natural stimulus statistics . In the periphery , a transmission bottleneck constrains performance; thus efficient coding implies that natural signal components with a predictably wider range should be compressed . In a different regime—when sampling limitatio... | Our senses are constantly bombarded by sights and sounds , but the capacity of the brain to process all these inputs is finite . The stimuli that contain the most useful information must therefore be prioritized for processing by the brain to ensure that we build up as complete a picture as possible of the world around... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Variance predicts salience in central sensory processing |
Genetic redundancy and pleiotropism have limited the discovery of functions associated with miRNAs and other regulatory mechanisms . To overcome this , we performed an enhancer screen for developmental defects caused by compromising both global miRISC function and individual genes in Caenorhabditis elegans . Among 126 ... | For an organism to develop from a single cell into a collection of many different , specialized cells , different genes must be switched on or off at particular times . However , some of these genes involved in development are ‘redundant’ and carry out the same or similar tasks . This acts like a backup system , so if ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2014 | CED-3 caspase acts with miRNAs to regulate non-apoptotic gene expression dynamics for robust development in C. elegans |
Efficient regulation of internal homeostasis and defending it against perturbations requires adaptive behavioral strategies . However , the computational principles mediating the interaction between homeostatic and associative learning processes remain undefined . Here we use a definition of primary rewards , as outcom... | Our survival depends on our ability to maintain internal states , such as body temperature and blood sugar levels , within narrowly defined ranges , despite being subject to constantly changing external forces . This process , which is known as homeostasis , requires humans and other animals to carry out specific behav... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Homeostatic reinforcement learning for integrating reward collection and physiological stability |
Cytoplasmic dynein is a molecular motor responsible for minus-end-directed cargo transport along microtubules ( MTs ) . Dynein motility has previously been studied on surface-immobilized MTs in vitro , which constrains the motors to move in two dimensions . In this study , we explored dynein motility in three dimension... | Cells rely on ‘molecular motors’ travelling along tracks called microtubules to move proteins and other cargoes between different parts of a cell . Dynein is a molecular motor that moves along the microtubules by taking “steps” towards the slowly growing end of these tracks . The trajectories of dynein motors have been... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2014 | Bidirectional helical motility of cytoplasmic dynein around microtubules |
The West Nile Virus ( WNV ) envelope protein , E , promotes membrane fusion during viral cell entry by undergoing a low-pH triggered conformational reorganization . We have examined the mechanism of WNV fusion and sought evidence for potential intermediates during the conformational transition by following hemifusion o... | Flaviviruses are a group of viruses that cause serious diseases in humans , including yellow fever , West Nile fever and dengue fever . Like all viruses , flaviviruses protect their genetic material with a protein shell and , like many other viruses , that shell also has a lipid membrane . Flaviruses use one of their s... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2014 | Sequential conformational rearrangements in flavivirus membrane fusion |
We have developed a generally adaptable , novel high-throughput Viral Chromosome Conformation Capture assay ( V3C-seq ) for use in trans that allows genome-wide identification of the direct interactions of a lytic virus genome with distinct regions of the cellular chromosome . Upon infection , we found that the parvovi... | Viruses are small infectious particles that can only reproduce with the help of a host . Once they are inside their victim , they hijack the cells’ genetic material and reprogram it to become a virus factory that produces more virus particles . Parvoviruses , for example , are among the simplest of viruses and need all... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"tools",
"and",
"resources",
"microbiology",
"and",
"infectious",
"disease"
] | 2018 | Parvovirus minute virus of mice interacts with sites of cellular DNA damage to establish and amplify its lytic infection |
Lrp4 , the muscle receptor for neuronal Agrin , is expressed in the hippocampus and areas involved in cognition . The function of Lrp4 in the brain , however , is unknown , as Lrp4−/− mice fail to form neuromuscular synapses and die at birth . Lrp4−/− mice , rescued for Lrp4 expression selectively in muscle , survive i... | LRP4 is a muscle protein that is found in the hippocampus , a region of the brain that controls cognitive processes such as learning and memory . However , we know very little about what exactly LRP4 does in the hippocampus , and how it affects learning and memory . A standard way to figure out what a protein does is t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Synaptic plasticity and cognitive function are disrupted in the absence of Lrp4 |
Extensive evidence suggests that people use base rate information inconsistently in decision making . A classic example is the inverse base rate effect ( IBRE ) , whereby participants classify ambiguous stimuli sharing features of both common and rare categories as members of the rare category . Computational models of... | Is a patient with muscle aches , headache and fever more likely to have influenza or Ebola ? Most people correctly choose ‘influenza’ because it is the more common of the two diseases . But what about someone with a cough and unexplained bleeding ? Coughing is a symptom of influenza but not of Ebola . Unexplained bleed... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Model-based fMRI reveals dissimilarity processes underlying base rate neglect |
The G9a/GLP complex mediates mono- and dimethylation of Lys9 of histone H3 at specific gene loci , which is associated with transcriptional repression . However , the molecular mechanism by which the G9a/GLP complex is targeted to the specific gene loci for H3K9 methylation is unclear . In this study , with unbiased pr... | Genes encode instructions for processes within cells , but only a small subset of the genes within a cell will be switched on ( or expressed ) at any given time . The other genes are kept switched off until their instructions are needed . For example , some genes are switched on when it is time for a cell to divide or ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology"
] | 2015 | The zinc finger proteins ZNF644 and WIZ regulate the G9a/GLP complex for gene repression |
Survival of Trypanosoma brucei depends upon switches in its protective Variant Surface Glycoprotein ( VSG ) coat by antigenic variation . VSG switching occurs by frequent homologous recombination , which is thought to require locus-specific initiation . Here , we show that a RecQ helicase , RECQ2 , acts to repair DNA b... | The African trypanosome , Trypanosoma brucei , is a parasite that is transmitted between mammals by the tsetse fly , and causes a disease known as sleeping sickness in humans . Like many other parasites , trypanosomes have evolved ways to avoid being killed by their hosts . One such survival strategy involves the paras... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"microbiology",
"and",
"infectious",
"disease"
] | 2016 | Mapping replication dynamics in Trypanosoma brucei reveals a link with telomere transcription and antigenic variation |
To maintain cellular structure and integrity during division , Gram-negative bacteria must carefully coordinate constriction of a tripartite cell envelope of inner membrane , peptidoglycan ( PG ) , and outer membrane ( OM ) . It has remained enigmatic how this is accomplished . Here , we show that envelope machines fac... | All bacterial cells are surrounded by a membrane , which forms a protective barrier around the cell . Most bacteria also have a wall surrounding the membrane , which provides structural support . When a bacterial cell divides to produce two daughter cells , it produces a belt-like structure around the middle of the cel... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2015 | Coordination of peptidoglycan synthesis and outer membrane constriction during Escherichia coli cell division |
Phase-amplitude coupling between theta and multiple gamma sub-bands is a hallmark of hippocampal activity and believed to take part in information routing . More recently , theta and gamma oscillations were also reported to exhibit phase-phase coupling , or n:m phase-locking , suggesting an important mechanism of neuro... | Neuroscientists have long sought to understand how the brain works by analyzing its electrical activity . Placing electrodes on the scalp or lowering them into the brain itself reveals rhythmic waves of activity known as oscillations . These arise when large numbers of neurons fire in synchrony . Recordings reveal that... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | On cross-frequency phase-phase coupling between theta and gamma oscillations in the hippocampus |
PARP-7 ( TiPARP ) is a mono ( ADP-ribosyl ) transferase whose protein substrates and biological activities are poorly understood . We observed that PARP7 mRNA levels are lower in ovarian cancer patient samples compared to non-cancerous tissue , but PARP-7 protein nonetheless contributes to several cancer-related biolog... | Cancer is a complex illness where changes inside healthy cells causes them to grow and reproduce rapidly . Specialized proteins called enzymes – which regulate chemical reactions in the cell – often help cancer develop and spread through the body . One such enzyme called PARP-7 labels other proteins by attaching a chem... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"cancer",
"biology"
] | 2021 | Identification of PARP-7 substrates reveals a role for MARylation in microtubule control in ovarian cancer cells |
Genetic drift is expected to remove polymorphism from populations over long periods of time , with the rate of polymorphism loss being accelerated when species experience strong reductions in population size . Adaptive forces that maintain genetic variation in populations , or balancing selection , might counteract thi... | Capsella rubella is a small plant that is found in southern and western Europe . This plant is young in evolutionary terms: it is thought to have emerged less than 200 , 000 years ago from a small group of plants belonging to an older species known as Capsella grandiflora . Individuals of the same species may carry alt... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"genetics",
"and",
"genomics"
] | 2019 | Long-term balancing selection drives evolution of immunity genes in Capsella |
During nervous system development , commissural axons cross the midline despite the presence of repellant ligands . In Drosophila , commissural axons avoid premature responsiveness to the midline repellant Slit by expressing the endosomal sorting receptor Commissureless , which reduces surface expression of the Slit re... | When an animal embryo is developing , nerve pathways grow to connect the left and right halves of the nervous system . These pathways allow coordination between the two sides of the body—which is important for tasks such as walking and swimming . However , in order for these pathways to be properly established , the ac... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"neuroscience"
] | 2015 | Robo2 acts in trans to inhibit Slit-Robo1 repulsion in pre-crossing commissural axons |
Continuous contact with self-major histocompatibility complex ligands is essential for the survival of naive CD4 T cells . We have previously shown that the resulting tonic TCR signaling also influences their fate upon activation by increasing their ability to differentiate into induced/peripheral regulatory T cells . ... | To help protect the body from disease , small immune cells called T lymphocytes move rapidly , searching for signs of infection . These signs are antigens – processed pieces of proteins from invading microbes – that are displayed on the surface of so-called antigen-presenting cells . Before it encounters its specific a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"immunology",
"and",
"inflammation"
] | 2017 | Calcium-mediated shaping of naive CD4 T-cell phenotype and function |
Non-segmented , ( - ) RNA viruses cause serious human diseases . Human metapneumovirus ( HMPV ) , an emerging pathogen of this order of viruses ( Mononegavirales ) is one of the main causes of respiratory tract illness in children . To help elucidate the assembly mechanism of the nucleocapsid ( the viral RNA genome pac... | Human metapneumovirus ( HMPV for short ) is a major cause of infections of the airways and lungs , particularly in children , elderly individuals and people with weakened immune systems . As for all viruses , HMPV cannot survive on its own . Instead , it must invade and hijack cells in order to replicate its own geneti... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"short",
"report",
"structural",
"biology",
"and",
"molecular",
"biophysics",
"microbiology",
"and",
"infectious",
"disease"
] | 2016 | Nucleocapsid assembly in pneumoviruses is regulated by conformational switching of the N protein |
Evolutionary adaptations of temporo-parietal cortex are considered to be a critical specialization of the human brain . Cortical adaptations , however , can affect different aspects of brain architecture , including local expansion of the cortical sheet or changes in connectivity between cortical areas . We distinguish... | How did language evolve ? Since the human lineage diverged from that of the other great apes millions of years ago , changes in the brain have given rise to behaviors that are unique to humans , such as language . Some of these changes involved alterations in the size and relative positions of brain areas , while other... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2020 | Cross-species cortical alignment identifies different types of anatomical reorganization in the primate temporal lobe |
In cancer cells , loss of G1/S control is often accompanied by p53 pathway inactivation , the latter usually rationalized as a necessity for suppressing cell cycle arrest and apoptosis . However , we found an unanticipated effect of p53 loss in mouse and human G1-checkpoint-deficient cells: reduction of DNA damage . We... | Healthy cells go through a strictly regulated process called the cell cycle in order to divide . During this cycle the cell’s DNA is duplicated and the two copies are equally distributed between the two newly formed cells . Duplicating DNA is a complex procedure that can go wrong and damage the DNA . This damage , in t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cancer",
"biology"
] | 2018 | Loss of p53 suppresses replication-stress-induced DNA breakage in G1/S checkpoint deficient cells |
Serine recombinases are often tightly controlled by elaborate , topologically-defined , nucleoprotein complexes . Hin is a member of the DNA invertase subclass of serine recombinases that are regulated by a remote recombinational enhancer element containing two binding sites for the protein Fis . Two Hin dimers bound t... | Many processes in biology rely on enzymes that break both the strands in a DNA molecule , then rearrange the strands , and finally join them back together in a new configuration . These recombination reactions can , for example , change the positions of genetic elements such as enhancers and promoters within the DNA mo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"biochemistry",
"and",
"chemical",
"biology"
] | 2013 | Multiple interfaces between a serine recombinase and an enhancer control site-specific DNA inversion |
Intravital microscopy can provide unique insights into the function of biological processes in a native context . However , physiological motion caused by peristalsis , respiration and the heartbeat can present a significant challenge , particularly for functional readouts such as fluorescence lifetime imaging ( FLIM )... | Understanding how molecules and cells behave in living animals can give researchers key insights into what goes wrong in diseases such as cancer , and how well potential treatments for these diseases work . A number of tools help us to see these processes . For example , fluorescent ‘biosensors’ change colour to tell u... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"cell",
"biology",
"tools",
"and",
"resources"
] | 2018 | Removing physiological motion from intravital and clinical functional imaging data |
Antibodies are critical components of the human adaptive immune system , providing versatile scaffolds to display diverse antigen-binding surfaces . Nevertheless , most antibodies have similar architectures , with the variable immunoglobulin domains of the heavy and light chain each providing three hypervariable loops ... | When bacteria , viruses or parasites invade the human body , the immune system responds by producing proteins called antibodies . Antibodies recognize and bind to molecules ( known as antigens ) on the surface of the invaders . This binding can either neutralize the invader directly or trigger signals that cause other ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"short",
"report",
"immunology",
"and",
"inflammation"
] | 2017 | The structure of a LAIR1-containing human antibody reveals a novel mechanism of antigen recognition |
The bacterial flagellum is a self-assembling nanomachine . The external flagellar filament , several times longer than a bacterial cell body , is made of a few tens of thousands subunits of a single protein: flagellin . A fundamental problem concerns the molecular mechanism of how the flagellum grows outside the cell ,... | Most bacteria are able to move in a directed manner towards nutrients or other locations of interest . Many move by rotating long tail-like filaments called flagella that stick out from the cell . The flagellum is a remarkably complex nanomachine . It is several times longer than the main body of the bacterial cell bod... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics",
"microbiology",
"and",
"infectious",
"disease"
] | 2017 | Bacterial flagella grow through an injection-diffusion mechanism |
Value-based decisions could rely either on the selection of desired economic goods or on the selection of the actions that will obtain the goods . We investigated this question by recording from the supplementary eye field ( SEF ) of monkeys during a gambling task that allowed us to distinguish chosen good from chosen ... | Much of our decision making seems to involve selecting the best option from among those currently available , and then working out how to attain that particular outcome . However , while this might sound straightforward in principle , exactly how this process is organized within the brain is not entirely clear . One po... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2015 | Sequential selection of economic good and action in medial frontal cortex of macaques during value-based decisions |
The heat shock response is a universal homeostatic cell autonomous reaction of organisms to cope with adverse environmental conditions . In mammalian cells , this response is mediated by the heat shock transcription factor Hsf1 , which is monomeric in unstressed cells and upon activation trimerizes , and binds to promo... | Cells cope with excessive heat , toxic compounds and other adverse environmental conditions by triggering an internal repair process called the heat shock response . In mammalian cells , a protein called Hsf1 is activated by stress and regulates the activity of a large set of target genes . These genes code for protein... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | Molecular mechanism of thermosensory function of human heat shock transcription factor Hsf1 |
Acyl-CoA binding domain-containing 7 ( Acbd7 ) is a paralog gene of the diazepam-binding inhibitor/Acyl-CoA binding protein in which single nucleotide polymorphism has recently been associated with obesity in humans . In this report , we provide converging evidence indicating that a splice variant isoform of the Acbd7 ... | Obesity is an increasingly common problem worldwide . To treat it effectively , we must understand how the body controls how much food a person consumes and how much energy they expend . The hypothalamus is one region of the brain that plays a critical role in regulating this energy balance . Some of the neurons in the... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"cell",
"biology",
"neuroscience"
] | 2016 | Involvement of the Acyl-CoA binding domain containing 7 in the control of food intake and energy expenditure in mice |
To elucidate new functions of sphingosine ( Sph ) , we demonstrate that the spontaneous elevation of intracellular Sph levels via caged Sph leads to a significant and transient calcium release from acidic stores that is independent of sphingosine 1-phosphate , extracellular and ER calcium levels . This photo-induced Sp... | Sphingosine is a small fat molecule that has been suggested to act as a signal inside cells . Individuals with a rare neurodegenerative disease called Niemann-Pick disease type C accumulate sphingosine and other fat molecules in cell compartments called lysosomes . Intriguingly , this fat accumulation is accompanied by... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2015 | Intracellular sphingosine releases calcium from lysosomes |
Neoblasts are an abundant , heterogeneous population of adult stem cells ( ASCs ) that facilitate the maintenance of planarian tissues and organs , providing a powerful system to study ASC self-renewal and differentiation dynamics . It is unknown how the collective output of neoblasts transit through differentiation pa... | Tissues in adult animals contain cells called adult stem cells , which can divide to generate more adult stem cells ( in a process called self-renewal ) or specialize into other cell types ( via a process called differentiation ) . This means that adult stem cells can replace the specialized cells that are continually ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2015 | Egr-5 is a post-mitotic regulator of planarian epidermal differentiation |
Seizures are a disruption of normal brain activity present across a vast range of species and conditions . We introduce an organizing principle that leads to the first objective Taxonomy of Seizure Dynamics ( TSD ) based on bifurcation theory . The ‘dynamotype’ of a seizure is the dynamic composition that defines its o... | Epileptic seizures have been recognized for centuries . But it was only in the 1930s that it was realized that seizures are the result of out-of-control electrical activity in the brain . By placing electrodes on the scalp , doctors can identify when and where in the brain a seizure begins . But they cannot tell much a... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"computational",
"and",
"systems",
"biology",
"tools",
"and",
"resources",
"neuroscience"
] | 2020 | A taxonomy of seizure dynamotypes |
We demonstrate that human motor memories can be artificially tagged and later retrieved by noninvasive transcranial direct current stimulation ( tDCS ) . Participants learned to adapt reaching movements to two conflicting dynamical environments that were each associated with a different tDCS polarity ( anodal or cathod... | Memory is strongly affected by the context in which a particular memory is formed and remembered . For example , visiting a familiar place can often trigger memories associated or “tagged” with that place . Such tagging also exists for memories related to movement: for instance , distinct motor memories for a limb move... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Tagging motor memories with transcranial direct current stimulation allows later artificially-controlled retrieval |
Blood vessels are lined by endothelial cells engaged in distinct organ-specific functions but little is known about their characteristic gene expression profiles . RNA-Sequencing of the brain , lung , and heart endothelial translatome identified specific pathways , transporters and cell-surface markers expressed in the... | Blood vessels supply nutrients , oxygen and other key molecules to all of the organs in the body . Cells lining the blood vessels , called endothelial cells , regulate which molecules pass from the blood to the organs they supply . For example , brain endothelial cells prevent toxic molecules from getting into the brai... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2020 | Endothelial heterogeneity across distinct vascular beds during homeostasis and inflammation |
Nucleolar protein interacting with the FHA domain of pKi-67 ( NIFK ) is a Ki-67-interacting protein . However , its precise function in cancer remains largely uninvestigated . Here we show the clinical significance and metastatic mechanism of NIFK in lung cancer . NIFK expression is clinically associated with poor prog... | Cancer cells can rapidly divide to form a tumor . Small groups of cells can leave the tumor to migrate to other sites in the body , and it is these “secondary” tumors that are often responsible for the death of cancer patients . Many proteins influence how and when cells divide and migrate . One such protein called Ki6... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2016 | The nucleolar protein NIFK promotes cancer progression via CK1α/β-catenin in metastasis and Ki-67-dependent cell proliferation |
Protein interaction is critical molecular regulatory activity underlining cellular functions and precise cell fate choices . Using TWIST1 BioID-proximity-labeling and network propagation analyses , we discovered and characterized a TWIST-chromatin regulatory module ( TWIST1-CRM ) in the neural crest cells ( NCC ) . Com... | Shaping the head and face during development relies on a complex ballet of molecular signals that orchestrates the movement and specialization of various groups of cells . In animals with a backbone for example , neural crest cells ( NCCs for short ) can march long distances from the developing spine to become some of ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2021 | TWIST1 and chromatin regulatory proteins interact to guide neural crest cell differentiation |
Semen is the main vector for HIV transmission and contains amyloid fibrils that enhance viral infection . Available microbicides that target viral components have proven largely ineffective in preventing sexual virus transmission . In this study , we establish that CLR01 , a ‘molecular tweezer’ specific for lysine and ... | Human Immunodeficiency Virus ( HIV ) is a sexually transmitted virus that can cause a serious disease that weakens the immune system . The virus is most commonly transmitted between individuals in semen , the male reproductive fluid . Semen contains deposits of protein fragments called amyloid fibrils , which can incre... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2015 | A molecular tweezer antagonizes seminal amyloids and HIV infection |
MicroRNAs ( miRNAs ) direct post-transcriptional regulation of human genes by guiding Argonaute proteins to complementary sites in messenger RNAs ( mRNAs ) targeted for repression . An enigmatic feature of many conserved mammalian miRNA target sites is that an adenosine ( A ) nucleotide opposite miRNA nucleotide-1 conf... | Stretches of DNA known as genes provide the instructions to make the proteins and RNA molecules a cell needs to work . To make a protein , the gene is used as a template to make a type of RNA molecule called messenger RNA ( mRNA ) , which is subsequently ‘translated’ into a protein . Most genes do not need to produce p... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2015 | Water-mediated recognition of t1-adenosine anchors Argonaute2 to microRNA targets |
MicroRNA targets are often recognized through pairing between the miRNA seed region and complementary sites within target mRNAs , but not all of these canonical sites are equally effective , and both computational and in vivo UV-crosslinking approaches suggest that many mRNAs are targeted through non-canonical interact... | Proteins are built by using the information contained in molecules of messenger RNA ( mRNA ) . Cells have several ways of controlling the amounts of different proteins they make . For example , a so-called ‘microRNA’ molecule can bind to an mRNA molecule to cause it to be more rapidly degraded and less efficiently used... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"genetics",
"and",
"genomics"
] | 2015 | Predicting effective microRNA target sites in mammalian mRNAs |
Ferritins are ubiquitous proteins that oxidise and store iron within a protein shell to protect cells from oxidative damage . We have characterized the structure and function of a new member of the ferritin superfamily that is sequestered within an encapsulin capsid . We show that this encapsulated ferritin ( EncFtn ) ... | Iron is essential for life as it is a key component of many different enzymes that participate in processes such as energy production and metabolism . However , iron can also be highly toxic to cells because it readily reacts with oxygen . This reaction can damage DNA , proteins and the membranes that surround cells . ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | Structural characterization of encapsulated ferritin provides insight into iron storage in bacterial nanocompartments |
The time it takes a sound to travel from source to ear differs between the ears and creates an interaural delay . It varies systematically with spatial direction and is generally modeled as a pure time delay , independent of frequency . In acoustical recordings , we found that interaural delay varies with frequency at ... | When you hear a sound , such as someone calling your name , it is often possible to make a good estimate of where that sound came from . If the sound came from the left , it would reach your left ear before your right ear , and vice versa if the sound originated from your right . The time that passes between the sound ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"neuroscience"
] | 2015 | Neural tuning matches frequency-dependent time differences between the ears |
Behavioral strategies employed for chemotaxis have been described across phyla , but the sensorimotor basis of this phenomenon has seldom been studied in naturalistic contexts . Here , we examine how signals experienced during free olfactory behaviors are processed by first-order olfactory sensory neurons ( OSNs ) of t... | Fruit flies are attracted to the smell of rotting fruit , and use it to guide them to nearby food sources . However , this task is made more challenging by the fact that the distribution of scent or odor molecules in the air is constantly changing . Fruit flies therefore need to cope with , and exploit , this variation... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"neuroscience"
] | 2015 | Dynamical feature extraction at the sensory periphery guides chemotaxis |
The maternal-to-zygotic transition ( MZT ) is a conserved step in animal development , where control is passed from the maternal to the zygotic genome . Although the MZT is typically considered from its impact on the transcriptome , we previously found that three maternally deposited Drosophila RNA-binding proteins ( M... | Bestselling author and organizing consultant Marie Kondo has helped people around the world declutter their homes by getting rid of physical items that do not bring them joy . Keeping the crowded environment inside a living cell organized also requires work and involves removing molecules that are no longer needed . A ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"developmental",
"biology"
] | 2020 | The E2 Marie Kondo and the CTLH E3 ligase clear deposited RNA binding proteins during the maternal-to-zygotic transition |
The gene encoding the Insulin-like Growth Factor 2 mRNA binding protein 2/IMP2 is amplified and overexpressed in many human cancers , accompanied by a poorer prognosis . Mice lacking IMP2 exhibit a longer lifespan and a reduced tumor burden at old age . Herein we show in a diverse array of human cancer cells that IMP2 ... | Some types of cancers develop when genes known as oncogenes or tumor promoters become faulty , and are present at abnormally high levels or inappropriately turned on . For example , cancer cells often have extra copies of the gene IMP2 and therefore produce too much the IMP2 protein . Previous research has shown that m... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cancer",
"biology"
] | 2017 | IGF2 mRNA binding protein-2 is a tumor promoter that drives cancer proliferation through its client mRNAs IGF2 and HMGA1 |
Coordination of diverse individuals often requires sophisticated communications and high-order computational abilities . Microbial populations can exhibit diverse individualistic behaviors , and yet can engage in collective migratory patterns with a spatially sorted arrangement of phenotypes . However , it is unclear h... | Organisms living in large groups often have to move together in order to navigate , forage for food , and increase their roaming range . Such groups are often made up of distinct individuals that must integrate their different behaviors in order to migrate in the same direction at a similar pace . For instance , for th... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"physics",
"of",
"living",
"systems",
"microbiology",
"and",
"infectious",
"disease"
] | 2021 | Spatial modulation of individual behaviors enables an ordered structure of diverse phenotypes during bacterial group migration |
Mutations in the human BEST1 gene lead to retinal degenerative diseases displaying progressive vision loss and even blindness . BESTROPHIN1 , encoded by BEST1 , is predominantly expressed in retinal pigment epithelium ( RPE ) , but its physiological role has been a mystery for the last two decades . Using a patient-spe... | Mutations to the gene that encodes a protein called BESTROPHIN1 cause a number of human diseases that lead to a progressive loss of sight and even blindness . Over two hundred of these disease-causing mutations exist , but it is not understood how they affect BESTROPHIN1 . Furthermore , there are currently no treatment... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2017 | Patient-specific mutations impair BESTROPHIN1’s essential role in mediating Ca2+-dependent Cl- currents in human RPE |
Using a combination of genetic , biochemical , and structural approaches , we show that the cyclic-peptide antibiotic GE23077 ( GE ) binds directly to the bacterial RNA polymerase ( RNAP ) active-center ‘i’ and ‘i+1’ nucleotide binding sites , preventing the binding of initiating nucleotides , and thereby preventing tr... | As increasing numbers of bacteria become resistant to antibiotics , new drugs are needed to fight bacterial infections . To develop new antibacterial drugs , researchers need to understand how existing antibiotics work . There are many ways to kill bacteria , but one of the most effective is to target an enzyme called ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2014 | GE23077 binds to the RNA polymerase ‘i’ and ‘i+1’ sites and prevents the binding of initiating nucleotides |
Insulin resistance in muscle , adipocytes and liver is a gateway to a number of metabolic diseases . Here , we show a selective deficiency in mitochondrial coenzyme Q ( CoQ ) in insulin-resistant adipose and muscle tissue . This defect was observed in a range of in vitro insulin resistance models and adipose tissue fro... | After we eat , our blood sugar levels increase . To counteract this , the pancreas releases a hormone called insulin . Part of insulin’s effect is to promote the uptake of sugar from the blood into muscle and fat tissue for storage . Under certain conditions , such as obesity , this process can become defective , leadi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2018 | Mitochondrial CoQ deficiency is a common driver of mitochondrial oxidants and insulin resistance |
G protein gated inward rectifier potassium ( GIRK ) channels are gated by direct binding of G protein beta-gamma subunits ( Gβγ ) , signaling lipids , and intracellular Na+ . In cardiac pacemaker cells , hetero-tetramer GIRK1/4 channels and homo-tetramer GIRK4 channels play a central role in parasympathetic slowing of ... | Signals from outside of a cell can alter the activity inside the cell . This process often involves members of a large family of proteins called G protein-coupled receptors ( GPCRs ) that are found on the surface of many cells in the body . When these receptors are activated they release a G protein on the inside of th... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | The GIRK1 subunit potentiates G protein activation of cardiac GIRK1/4 hetero-tetramers |
Complete and robust human genome duplication requires loading minichromosome maintenance ( MCM ) helicase complexes at many DNA replication origins , an essential process termed origin licensing . Licensing is restricted to G1 phase of the cell cycle , but G1 length varies widely among cell types . Using quantitative s... | From red blood cells to nerve cells , animals’ bodies contain many different types of specialized cells . These all begin as stem cells , which have the potential to divide and make more stem cells or to specialize . All dividing cells must first unwind their DNA so that it can be copied . To achieve this , cells load ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2017 | Rapid DNA replication origin licensing protects stem cell pluripotency |
We demonstrate that it is feasible to determine high-resolution protein structures by electron crystallography of three-dimensional crystals in an electron cryo-microscope ( CryoEM ) . Lysozyme microcrystals were frozen on an electron microscopy grid , and electron diffraction data collected to 1 . 7 Å resolution . We ... | X-ray crystallography has been used to work out the atomic structure of a large number of proteins . In a typical X-ray crystallography experiment , a beam of X-rays is directed at a protein crystal , which scatters some of the X-ray photons to produce a diffraction pattern . The crystal is then rotated through a small... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2013 | Three-dimensional electron crystallography of protein microcrystals |
Macrophages are myeloid-derived phagocytic cells and one of the first immune cell types to respond to microbial infections . However , a number of bacterial pathogens are resistant to the antimicrobial activities of macrophages and can grow within these cells . Macrophages have other immune surveillance roles including... | Many of the bacteria that are able to cause disease in humans and other animals are able to grow inside their host’s cells . In doing so , these bacteria can avoid being recognized and killed by the host’s immune system . However , the ability of the bacteria to grow within the cell is constrained by the limited space ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"immunology",
"and",
"inflammation"
] | 2016 | Trogocytosis-associated cell to cell spread of intracellular bacterial pathogens |
Although it is clear that trisomy 21 causes Down syndrome , the molecular events acting downstream of the trisomy remain ill defined . Using complementary genomics analyses , we identified the interferon pathway as the major signaling cascade consistently activated by trisomy 21 in human cells . Transcriptome analysis ... | Our genetic information is contained within structures called chromosomes . Down syndrome is caused by the genetic condition known as trisomy 21 , in which a person is born with an extra copy of chromosome 21 . This extra chromosome affects human development in many ways , including causing neurological problems and st... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"short",
"report"
] | 2016 | Trisomy 21 consistently activates the interferon response |
During meiosis , crossover recombination is essential to link homologous chromosomes and drive faithful chromosome segregation . Crossover recombination is non-random across the genome , and centromere-proximal crossovers are associated with an increased risk of aneuploidy , including Trisomy 21 in humans . Here , we i... | The cells of animals , plants and many other organisms store most of their DNA inside the cell nucleus , packaged into structures called chromosomes . Most cells contain two copies of each chromosome – one inherited from each parent . However , sex cells ( such as egg cells and sperm cells ) contain just one copy of ev... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2015 | The kinetochore prevents centromere-proximal crossover recombination during meiosis |
Transcription at individual genes in single cells is often pulsatile and stochastic . A key question emerges regarding how this behaviour contributes to tissue phenotype , but it has been a challenge to quantitatively analyse this in living cells over time , as opposed to studying snap-shots of gene expression state . ... | Although humans have thousands of genes , only a fraction of these are expressed in any given cell . Each cell type expresses only the genes that are relevant to its particular job or that are necessary for general cell maintenance . Even these genes are not expressed all the time: most cells express genes in bursts , ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"computational",
"and",
"systems",
"biology"
] | 2016 | Spatially coordinated dynamic gene transcription in living pituitary tissue |
Gram-negative bacteria import essential nutrients such as iron and vitamin B12 through outer membrane receptors . This process utilizes proton motive force harvested by the Ton system made up of three inner membrane proteins , ExbB , ExbD and TonB . ExbB and ExbD form the proton channel that energizes uptake through To... | Many biological processes that are essential for life are powered by the flow of ions across the membranes of cells . Similar to how energy is stored in the water behind a dam , energy is also stored when the concentration of ions on one side of a biological membrane is higher than it is on the other . When these ions ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2018 | Hexameric and pentameric complexes of the ExbBD energizer in the Ton system |
Long lasting pyrethroid treated bednets are the most important tool for preventing malaria . Pyrethroid resistant Anopheline mosquitoes are now ubiquitous in Africa , though the public health impact remains unclear , impeding the deployment of more expensive nets . Meta-analyses of bioassay studies and experimental hut... | In recent years , widespread use of insecticide-treated bednets has prevented hundreds of thousands cases of malaria in Africa . Insecticide-treated bednets protect people in two ways: they provide a physical barrier that prevents the insects from biting and the insecticide kills mosquitos that come into contact with t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"epidemiology",
"and",
"global",
"health"
] | 2016 | The impact of pyrethroid resistance on the efficacy and effectiveness of bednets for malaria control in Africa |
Hippocampal oscillations are dynamic , with unique oscillatory frequencies present during different behavioral states . To examine the extent to which these oscillations reflect neuron engagement in distinct local circuit processes that are important for memory , we recorded single cell and local field potential activi... | Electrodes placed on the surface of the scalp can reveal rhythmic patterns of electrical activity within the brain . These rhythms reflect the coordinated firing of large numbers of neurons that are connected together within a network in order to process information . A single network can show rhythms with various diff... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Rhythmic coordination of hippocampal neurons during associative memory processing |
Molecular and cellular processes in neurons are critical for sensing and responding to energy deficit states , such as during weight-loss . Agouti related protein ( AGRP ) -expressing neurons are a key hypothalamic population that is activated during energy deficit and increases appetite and weight-gain . Cell type-spe... | Humans and other animals must get adequate nutrition in order to survive . As a result , the body has several systems that work side by side to maintain a healthy body weight and ensure that enough food gets eaten to provide the energy that the body needs . Problems with these systems can contribute towards obesity and... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"tools",
"and",
"resources",
"neuroscience"
] | 2015 | Cell type-specific transcriptomics of hypothalamic energy-sensing neuron responses to weight-loss |
The inner ear is a fluid-filled closed-epithelial structure whose function requires maintenance of an internal hydrostatic pressure and fluid composition . The endolymphatic sac ( ES ) is a dead-end epithelial tube connected to the inner ear whose function is unclear . ES defects can cause distended ear tissue , a path... | The most internal part of the human ear , the inner ear , is essential for us to hear and have a sense of balance . It is formed by a complex series of connected cavities filled by a liquid . When sound waves and changes in the position of the body make this liquid move , specialized ‘hair’ cells can detect these subtl... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2018 | Lamellar projections in the endolymphatic sac act as a relief valve to regulate inner ear pressure |
Horizontal gene transfer ( HGT ) plays a major role in the spread of antibiotic resistance . Of particular concern are Acinetobacter baumannii bacteria , which recently emerged as global pathogens , with nosocomial mortality rates reaching 19–54% ( Centers for Disease Control and Prevention , 2013; Joly Guillou , 2005;... | Every year , antibiotics save millions of lives , but this may not last forever . The bacteria that cause infections are getting smarter and continuously evolve genes to become resistant to antibiotics , which makes it harder to kill them . In many cases , using stronger drugs can bypass this problem , but some 'super-... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2017 | Inter-species population dynamics enhance microbial horizontal gene transfer and spread of antibiotic resistance |
Dystrophin forms an essential link between sarcolemma and cytoskeleton , perturbation of which causes muscular dystrophy . We analysed Dystrophin binding dynamics in vivo for the first time . Within maturing fibres of host zebrafish embryos , our analysis reveals a pool of diffusible Dystrophin and complexes bound at t... | A protein called Dystrophin plays a key role in maintaining the structural integrity of muscle cells as they contract and relax . Mutations in the gene that encodes Dystrophin can cause several different types of muscular dystrophy , a group of diseases in which muscle progressively weakens . Some mutations in Dystroph... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2015 | In vivo dynamics of skeletal muscle Dystrophin in zebrafish embryos revealed by improved FRAP analysis |
In meiosis , DNA double-strand break ( DSB ) formation by Spo11 initiates recombination and enables chromosome segregation . Numerous factors are required for Spo11 activity , and couple the DSB machinery to the development of a meiosis-specific ‘axis-tethered loop’ chromosome organisation . Through in vitro reconstitu... | Organisms are said to be diploid when they carry two copies of each chromosome in their cells , one from each of their biological parents . But in order for each parent to only pass on one copy of their own chromosomes , they need to make haploid cells , which only carry one copy of each chromosome . These cells form b... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"biochemistry",
"and",
"chemical",
"biology"
] | 2021 | Novel mechanistic insights into the role of Mer2 as the keystone of meiotic DNA break formation |
Beige/brite adipocytes are induced within white adipose tissues ( WAT ) and , when activated , consume glucose and fatty acids to produce heat . Classically , two stimuli have been used to trigger a beiging response: cold temperatures and β3-adrenergic receptor ( Adrb3 ) agonists . These two beiging triggers have been ... | Excess accumulation of a type of fat called white fat is associated with obesity and metabolic problems . White fat cells store energy . White fat tissue also contains some beige fat cells , which burn fats and sugars to produce heat . Cold temperatures trigger the production and activity of beige fat cells , which all... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2017 | Distinct cellular and molecular mechanisms for β3 adrenergic receptor-induced beige adipocyte formation |
Osteocalcin ( OCN ) is an osteoblast-derived hormone with pleiotropic physiological functions . Like many peptide hormones , OCN is subjected to post-translational modifications ( PTMs ) which control its activity . Here , we uncover O-glycosylation as a novel PTM present on mouse OCN and occurring on a single serine (... | Bones provide support and protection for organs in the body . However , over the last 15 years researchers have discovered that bones also release chemicals known as hormones , which can travel to other parts of the body and cause an effect . The cells responsible for making bone , known as osteoblasts , produce a horm... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"medicine"
] | 2020 | The half-life of the bone-derived hormone osteocalcin is regulated through O-glycosylation in mice, but not in humans |
Rotavirus genome replication and assembly take place in cytoplasmic electron dense inclusions termed viroplasms ( VPs ) . Previous conventional optical microscopy studies observing the intracellular distribution of rotavirus proteins and their organization in VPs have lacked molecular-scale spatial resolution , due to ... | Rotaviruses are small viruses that can infect cells in the intestine . They are responsible for most cases of severe infectious diarrhea , the most common cause of death among young children in developing countries . Controlling the spread of rotavirus infections is difficult , even with high levels of hygiene , so eff... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2019 | Nanoscale organization of rotavirus replication machineries |
Giant lipid vesicles are closed compartments consisting of semi-permeable shells , which isolate femto- to pico-liter quantities of aqueous core from the bulk . Although water permeates readily across vesicular walls , passive permeation of solutes is hindered . In this study , we show that , when subject to a hypotoni... | All living cells are surrounded by a membrane that water can pass through . However , water often contains other molecules called solutes , and many of these cannot pass through the cell membrane . If the concentration of solutes outside the cell is , say , suddenly decreased , then water molecules will tend to move in... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2014 | Oscillatory phase separation in giant lipid vesicles induced by transmembrane osmotic differentials |
Activating mutations in FLT3 confer poor prognosis for individuals with acute myeloid leukemia ( AML ) . Clinically active investigational FLT3 inhibitors can achieve complete remissions but their utility has been hampered by acquired resistance and myelosuppression attributed to a ‘synthetic lethal toxicity’ arising f... | Major advances in cancer therapy have improved the treatment options for many patients . However , many cancer treatments are toxic or have severe side effects , making them difficult for patients to tolerate . One cause of these side effects is that many cancer therapies kill both normal cells and cancer cells . Devel... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"cancer",
"biology"
] | 2014 | Overcoming myelosuppression due to synthetic lethal toxicity for FLT3-targeted acute myeloid leukemia therapy |
Drosophila melanogaster males perform a series of courtship behaviors that , when successful , result in copulation with a female . For over a century , mutations in the yellow gene , named for its effects on pigmentation , have been known to reduce male mating success . Prior work has suggested that yellow influences ... | More than 100 years ago , Nobel-prize winning geneticist Thomas Hunt Morgan and his colleagues discovered that some fruit flies inherited genetic mutations that caused their body color to change . The yellow flies had a mutation in one specific gene and these mutants did not only look different from normal flies , they... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"genetics",
"and",
"genomics"
] | 2019 | The yellow gene influences Drosophila male mating success through sex comb melanization |
The DUX4 transcription factor is encoded by a retrogene embedded in each unit of the D4Z4 macrosatellite repeat . DUX4 is normally expressed in the cleavage-stage embryo , whereas chromatin repression prevents DUX4 expression in most somatic tissues . Failure of this repression causes facioscapulohumeral muscular dystr... | The DNA sequences of humans and other mammals contain many repetitive regions . This repetition makes these regions difficult to study with conventional approaches , and so the exact role of repetitive DNA is not fully understood . A particular sequence of repetitive DNA that plays an important role in human health con... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2018 | NuRD and CAF-1-mediated silencing of the D4Z4 array is modulated by DUX4-induced MBD3L proteins |
Many types of adult stem cells exist in a state of cell-cycle quiescence , yet it has remained unclear whether quiescence plays a role in maintaining the stem cell fate . Here we establish the adult germline of Caenorhabditis elegans as a model for facultative stem cell quiescence . We find that mitotically dividing ge... | Adult stem cells can divide to produce cells that can develop into one of many different specialist cell types in a tissue , and so are vitally important for tissue repair and maintenance . Some types of adult stem cells exist primarily in a non-dividing state known as quiescence , which for a long time was thought to ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"stem",
"cells",
"and",
"regenerative",
"medicine",
"cell",
"biology"
] | 2015 | Cell-cycle quiescence maintains Caenorhabditis elegans germline stem cells independent of GLP-1/Notch |
Dysfunction of the basal ganglia produces severe deficits in the timing , initiation , and vigor of movement . These diverse impairments suggest a control system gone awry . In engineered systems , feedback is critical for control . By contrast , models of the basal ganglia highlight feedforward circuitry and ignore in... | The basal ganglia are a group of nuclei located deep within the brain that are involved in the control of movement . The death of neurons in one particular nucleus—known as the substantia nigra—gives rise to a range of symptoms that are characteristic of Parkinson’s disease , including slowness of movement and tremors ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | The inhibitory microcircuit of the substantia nigra provides feedback gain control of the basal ganglia output |
To understand brain circuits it is necessary both to record and manipulate their activity . Transcranial ultrasound stimulation ( TUS ) is a promising non-invasive brain stimulation technique . To date , investigations report short-lived neuromodulatory effects , but to deliver on its full potential for research and th... | Ultrasound is well known for making visible what is hidden , for example , when giving parents a glimpse of their child before birth . But researchers are now using these high-frequency sound waves – beyond the range of human hearing – for a wholly different purpose: to manipulate the activity of the brain . Convention... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2019 | Offline impact of transcranial focused ultrasound on cortical activation in primates |
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