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In this study , we investigated how microtubule motors organize microtubules in Drosophila neurons . We showed that , during the initial stages of axon outgrowth , microtubules display mixed polarity and minus-end-out microtubules push the tip of the axon , consistent with kinesin-1 driving outgrowth by sliding antipar... | Motor proteins can move along filaments called microtubules to transport proteins and other materials to different parts of the cell . Microtubules are “polar” filaments , meaning that they have two distinct ends that have different chemical properties . Motor proteins can only move along these filaments in one directi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"cell",
"biology"
] | 2015 | Interplay between kinesin-1 and cortical dynein during axonal outgrowth and microtubule organization in Drosophila neurons |
PTEN controls three-dimensional ( 3D ) glandular morphogenesis by coupling juxtamembrane signaling to mitotic spindle machinery . While molecular mechanisms remain unclear , PTEN interacts through its C2 membrane-binding domain with the scaffold protein β-Arrestin1 . Because β-Arrestin1 binds and suppresses the Cdc42 G... | The protein PTEN helps to organize cells in the body to form complex structures . In particular , it collects signals from a cells’ surroundings and changes where cells divide so new cells are produced in the right places . The control of cell division by PTEN is also thought to help limit the progression and spread of... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"cancer",
"biology"
] | 2017 | PTEN controls glandular morphogenesis through a juxtamembrane β-Arrestin1/ARHGAP21 scaffolding complex |
SpoIIIE is a membrane-anchored DNA translocase that localizes to the septal midpoint to mediate chromosome translocation and membrane fission during Bacillus subtilis sporulation . Here we use cell-specific protein degradation and quantitative photoactivated localization microscopy in strains with a thick sporulation s... | Bacillus subtilis is a bacterium that lives in the soil and is related to the bacteria that cause the diseases anthrax and botulism in humans . When nutrients are scarce , these bacteria can change into a dormant form called spores , which can withstand harsh environmental conditions . The spores can remain dormant for... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2015 | Visualization and functional dissection of coaxial paired SpoIIIE channels across the sporulation septum |
Fast directional growth is a necessity for the young seedling; after germination , it needs to quickly penetrate the soil to begin its autotrophic life . In most dicot plants , this rapid escape is due to the anisotropic elongation of the hypocotyl , the columnar organ between the root and the shoot meristems . Anisotr... | Unlike animal cells , plant cells are surrounded by a stiff shell called the cell wall . Cell walls are composed of two main types of material: cellulose , the strong fibers that make up paper , and a pectin gel , which holds everything together . In order for plants to grow , the cell wall has to yield to the pressure... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"plant",
"biology"
] | 2018 | Anisotropic growth is achieved through the additive mechanical effect of material anisotropy and elastic asymmetry |
Research in the field of human immunology is restricted by the lack of a system that reconstitutes the in-situactivation dynamics of quiescent human antigen-specific T-cells interacting with dendritic cells . Here we report a tissue-like system that recapitulates the dynamics of engineered primary human immune cell . O... | The human immune system protects the body from infection or cancer by detecting foreign and abnormal elements , known as antigens , and initiating a response to clear them . It relies on a type of white blood cell called a T-cell to distinguish which substances are the body’s own , and which are infectious . Each T-cel... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"tools",
"and",
"resources",
"immunology",
"and",
"inflammation"
] | 2019 | A tissue-like platform for studying engineered quiescent human T-cells’ interactions with dendritic cells |
Although pain is a common symptom of various diseases and disorders , its contribution to disease pathogenesis is not well understood . Here we show using murine experimental autoimmune encephalomyelitis ( EAE ) , a model for multiple sclerosis ( MS ) , that pain induces EAE relapse . Mechanistic analysis showed that p... | Multiple sclerosis ( or MS for short ) is a disease in which the insulating covers of nerve cells in the brain and spinal cord become inflamed and damaged . Depending on which nerves are affected , this disease can cause a wide range of symptoms , ranging from numbness and muscle spasms to visual disturbances and chron... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2015 | A pain-mediated neural signal induces relapse in murine autoimmune encephalomyelitis, a multiple sclerosis model |
Bacterial biofilms can generate micro-heterogeneity in terms of surface structures . However , little is known about the associated changes in the physics of cell–cell interaction and its impact on the architecture of biofilms . In this study , we used the type IV pilus of Neisseria gonorrhoeae to test whether variatio... | Communities of bacterial cells can live together embedded within a slime-like molecular matrix as a biofilm . This allows the bacteria to hide from external stresses . A single bacterium can replicate itself and develop into a biofilm , and over time the bacterial cells in specific regions of the biofilm will start to ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2015 | Differential interaction forces govern bacterial sorting in early biofilms |
Affinity and dose of T cell receptor ( TCR ) interaction with antigens govern the magnitude of CD4+ T cell responses , but questions remain regarding the quantitative translation of TCR engagement into downstream signals . We find that while the response of mouse CD4+ T cells to antigenic stimulation is bimodal , activ... | T helper cells recognize and respond to bacteria , viruses and other invading microbes and thus play a central role in the adaptive immune system . These cells have a receptor on their surface that binds to fragments of proteins – known as oligopeptides – from the microbes that have been digested and presented on the s... | [
"Abstract",
"Introduction",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"immunology",
"and",
"inflammation"
] | 2016 | Affinity and dose of TCR engagement yield proportional enhancer and gene activity in CD4+ T cells |
The rice seedling blight fungus Rhizopus microsporus and its endosymbiont Burkholderia rhizoxinica form an unusual , highly specific alliance to produce the highly potent antimitotic phytotoxin rhizoxin . Yet , it has remained a riddle how bacteria invade the fungal cells . Genome mining for potential symbiosis factors... | Many organisms live in what are known as symbiotic relationships , whereby two or more different species share a close and often long lasting association . Examples of symbiosis abound in nature , with well-studied examples including the sea anemone and the clownfish , corals and their photosynthetic algae , and nitrog... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2014 | Active invasion of bacteria into living fungal cells |
The Chromosome Region of Maintenance 1 ( CRM1 ) protein mediates nuclear export of hundreds of proteins through recognition of their nuclear export signals ( NESs ) , which are highly variable in sequence and structure . The plasticity of the CRM1-NES interaction is not well understood , as there are many NES sequences... | Many organisms keep their DNA within a structure inside their cells called the nucleus . Two layers of membrane surround the nucleus and keep the DNA separate from the rest of the cell's contents . Yet , proteins and other molecules can move in and out of the nucleus by passing through small pores in this nuclear membr... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2015 | Structural determinants of nuclear export signal orientation in binding to exportin CRM1 |
Medullary thymic epithelial cells ( mTECs ) play a critical role in central immune tolerance by mediating negative selection of autoreactive T cells through the collective expression of the peripheral self-antigen compartment , including tissue-specific antigens ( TSAs ) . Recent work has shown that gene-expression pat... | Specialized cells in the immune system known as T cells protect the body from infection by destroying disease-causing microbes , such as bacteria or viruses . T cells use proteins on their surface called receptors to stick to infectious microbes and remove them from the body . Some newly developed T-cells , however , c... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation",
"genetics",
"and",
"genomics"
] | 2020 | Combined transient ablation and single-cell RNA-sequencing reveals the development of medullary thymic epithelial cells |
Organogenesis depends on orchestrated interactions between individual cells and morphogenetically relevant cues at the tissue level . This is true for the heart , whose function critically relies on well-ordered communication between neighboring cells , which is established and fine-tuned during embryonic development .... | The heart has a built-in pacemaker that sets the rhythm of the heartbeat . Pacemaker cells produce electrical signals that spread across the heart in a coordinated wave . As each cell receives its signal , ion channels open in its membrane . Calcium ions rush in from the spaces around the cells , triggering the release... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics",
"tools",
"and",
"resources"
] | 2017 | Cell-accurate optical mapping across the entire developing heart |
Cortical dynein generates pulling forces via microtubule ( MT ) end capture-shrinkage and lateral MT sliding mechanisms . In Saccharomyces cerevisiae , the dynein attachment molecule Num1 interacts with endoplasmic reticulum ( ER ) and mitochondria to facilitate spindle positioning across the mother-bud neck , but dire... | Cells must divide so that organisms can grow , repair damaged tissues or reproduce . Before dividing , a cell creates two identical copies of its genetic information – one for each daughter . A molecular machine known as the mitotic spindle then moves each set of genetic material to where it will be needed when the dau... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2018 | Cortical dynein pulling mechanism is regulated by differentially targeted attachment molecule Num1 |
Fabry disease ( FD ) is a life-threatening X-linked lysosomal storage disorder caused by α-galactosidase A ( α-GAL ) deficiency . Small fiber pathology and pain are major FD symptoms of unknown pathophysiology . α-GAL deficient mice ( GLA KO ) age-dependently accumulate globotriaosylceramide ( Gb3 ) in dorsal root gang... | Fabry disease is a life-threatening disorder that runs in families and affects many parts of the body . Symptoms begin in early childhood , often with episodes of burning pain in the hands and feet . As patients with Fabry disease grow older , sensory nerve fibers in their skin start to break down . As a result , affec... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Characterization of small fiber pathology in a mouse model of Fabry disease |
Meiotic chromosomes are highly compacted yet remain transcriptionally active . To understand how chromosome folding accommodates transcription , we investigated the assembly of the axial element , the proteinaceous structure that compacts meiotic chromosomes and promotes recombination and fertility . We found that the ... | Chromosomes are long molecules of DNA that represent the genetic material of an organism . In most animal cells , chromosomes are found in pairs; with one inherited from the mother and the other from the father . Sex cells—egg cells and sperm—contain half the normal number of chromosomes , so that when they fuse , the ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2015 | Transcription dynamically patterns the meiotic chromosome-axis interface |
Various pathologic conditions result in jaundice , a yellowing of the skin due to a buildup of bilirubin . Patients with jaundice commonly report experiencing an intense non-histaminergic itch . Despite this association , the pruritogenic capacity of bilirubin itself has not been described , and no bilirubin receptor h... | Jaundice causes the skin to yellow as a result of a build-up of a pigment called bilirubin . Normally , bilirubin is made in the liver and removed from the body in digestive fluid called bile , but people with liver or gallbladder problems may end up with too much bilirubin that accumulates in their blood and skin . On... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2019 | Identification of a bilirubin receptor that may mediate a component of cholestatic itch |
Exercise has a wide range of systemic effects . In animal models , repeated exertion reduces malignant tumor progression , and clinically , exercise can improve outcome for cancer patients . The etiology of the effects of exercise on tumor progression are unclear , as are the cellular actors involved . We show here tha... | Exercise affects almost all tissues in the body , and scientists have found that being physically active can reduce the risk of several types of cancer as well as improving outcomes for cancer patients . However , it is still unknown how exercise exerts its protective effects . One of the hallmarks of cancer is the abi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation",
"cancer",
"biology"
] | 2020 | Cytotoxic T-cells mediate exercise-induced reductions in tumor growth |
Humans and other animals base important decisions on estimates of number , and intraparietal cortex is thought to provide a crucial substrate of this ability . However , it remains debated whether an independent neuronal processing mechanism underlies this ‘number sense’ , or whether number is instead judged indirectly... | Numbers and the ability to count and calculate are an essential part of human culture . They are part of everyday life , featuring in calendars , computers or the weekly shop , but also in some of humanity’s biggest achievements: without them the pyramids or space travel would not exist . A precursor of sophisticated m... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2019 | Attentional amplification of neural codes for number independent of other quantities along the dorsal visual stream |
The Mullerian ducts are the anlagen of the female reproductive tract , which regress in the male fetus in response to MIS . This process is driven by subluminal mesenchymal cells expressing Misr2 , which trigger the regression of the adjacent Mullerian ductal epithelium . In females , these Misr2+ cells are retained , ... | In the womb , mammals possess all of the preliminary sexual structures necessary to become either male or female . This includes the Mullerian duct , which develops into the Fallopian tubes , uterus , cervix , and vagina in female fetuses . In male fetuses , the testis secretes a hormone called Mullerian inhibiting sub... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2019 | Single-cell sequencing of neonatal uterus reveals an Misr2+ endometrial progenitor indispensable for fertility |
T-box riboswitches are cis-regulatory RNA elements that regulate the expression of proteins involved in amino acid biosynthesis and transport by binding to specific tRNAs and sensing their aminoacylation state . While the T-box modular structural elements that recognize different parts of a tRNA have been identified , ... | Living organisms depend upon a group of chemicals called amino acids to survive . Amino acids are the building blocks of proteins , and proteins have many important roles within and around cells . Bacteria regulate certain genes to ensure they have the right balance of different amino acids to survive . By controlling ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2018 | Specific structural elements of the T-box riboswitch drive the two-step binding of the tRNA ligand |
Protein kinases are major drug targets , but the development of highly-selective inhibitors has been challenging due to the similarity of their active sites . The observation of distinct structural states of the fully-conserved Asp-Phe-Gly ( DFG ) loop has put the concept of conformational selection for the DFG-state a... | Protein kinases are a family of enzymes found in all living organisms . These enzymes help to control many biological processes , including cell division . When particular protein kinases do not work correctly , cells may start to divide uncontrollably , which can lead to cancer . One example is the kinase Aurora A , w... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics",
"cancer",
"biology"
] | 2018 | Dynamics of human protein kinase Aurora A linked to drug selectivity |
Formation of a division septum near a randomly chosen pole during sporulation in Bacillus subtilis creates unequal sized daughter cells with dissimilar programs of gene expression . An unanswered question is how polar septation activates a transcription factor ( σF ) selectively in the small cell . We present evidence ... | An important question in biology is how genetically identical cells activate different sets of genes . This is particularly perplexing for cells that rely on random events to specify the genes they switch on . Normally , cells of a bacterium called Bacillus subtilis divide symmetrically to produce two identical cells t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2015 | Asymmetric division triggers cell-specific gene expression through coupled capture and stabilization of a phosphatase |
Elucidating signaling pathways that regulate cellular metabolism is essential for a better understanding of normal development and tumorigenesis . Recent studies have shown that mitochondrial pyruvate carrier 1 ( MPC1 ) , a crucial player in pyruvate metabolism , is downregulated in colon adenocarcinomas . Utilizing ze... | Colon cancer remains an important problem in healthcare . Cancer researchers are looking for new ways to detect the disease earlier and treat it more effectively . This is challenging because many of the genetic and molecular causes of colon cancer are still poorly understood . Mutations in the gene that encodes a prot... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cancer",
"biology"
] | 2017 | A metabolic switch controls intestinal differentiation downstream of Adenomatous polyposis coli (APC) |
Defecation allows the body to eliminate waste , an essential step in food processing for animal survival . In contrast to the extensive studies of feeding , its obligate counterpart , defecation , has received much less attention until recently . In this study , we report our characterizations of the defecation behavio... | In animals , the final stage in the digestion of food is the removal of waste from the body . Until recently , however , defecation has received less attention than other aspects of digestion such as feeding behavior and nutrition . Fruit flies , also known as Drosophila , are commonly used in research as a model of an... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Identification of motor neurons and a mechanosensitive sensory neuron in the defecation circuitry of Drosophila larvae |
The nucleus of the solitary tract ( NTS ) is a key gateway for meal-related signals entering the brain from the periphery . However , the chemical mediators crucial to this process have not been fully elucidated . We reveal that a subset of NTS neurons containing cholecystokinin ( CCKNTS ) is responsive to nutritional ... | Obesity primarily results from eating more food than the body requires , the energy from which is then stored as fat . In recent years obesity has become increasingly common , with the resulting health problems presenting one of the major healthcare challenges of the twenty-first century . New ways to tackle the obesit... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"short",
"report",
"neuroscience"
] | 2016 | Appetite controlled by a cholecystokinin nucleus of the solitary tract to hypothalamus neurocircuit |
The computational principles by which the brain creates a painful experience from nociception are still unknown . Classic theories suggest that cortical regions either reflect stimulus intensity or additive effects of intensity and expectations , respectively . By contrast , predictive coding theories provide a unified... | All over the human body , there are receptors that help to alert the brain to potential harm . For example , intense heat on the skin elicits a signal that travels to the brain and activates many parts of the brain . Some of the same brain regions that are switched on by signals of potential bodily harm also help the b... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2017 | Functional dissociation of stimulus intensity encoding and predictive coding of pain in the insula |
Many cells contain non-centrosomal arrays of microtubules ( MTs ) , but the assembly , organisation and function of these arrays are poorly understood . We present the first theoretical model for the non-centrosomal MT cytoskeleton in Drosophila oocytes , in which bicoid and oskar mRNAs become localised to establish th... | Cells contain a network of filaments known as microtubules that serve as tracks along which proteins and other materials can be moved from one location to another . For example , molecules called messenger ribonucleic acids ( or mRNAs for short ) are made in the nucleus and are then moved to various locations around th... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"physics",
"of",
"living",
"systems"
] | 2015 | Cortical microtubule nucleation can organise the cytoskeleton of Drosophila oocytes to define the anteroposterior axis |
Despite continual renewal and damages , a multicellular organism is able to maintain its complex morphology . How is this stability compatible with the complexity and diversity of living forms ? Looking for answers at protein level may be limiting as diverging protein sequences can result in similar morphologies . Insp... | Cells have the power to organise themselves to form complex and stable structures , whether it is to create a fully shaped baby from a single egg , or to allow adult salamanders to grow a new limb after losing a leg . This ability has been scrutinised at many different levels . For example , researchers have looked at ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"physics",
"of",
"living",
"systems"
] | 2018 | Theoretical tool bridging cell polarities with development of robust morphologies |
Regulated exocytosis establishes a narrow fusion pore as initial aqueous connection to the extracellular space , through which small transmitter molecules such as ATP can exit . Co-release of polypeptides and hormones like insulin requires further expansion of the pore . There is evidence that pore expansion is regulat... | Insulin is the hormone that signals to the body to take up sugar from the blood . Specialized cells in the pancreas – known as β-cells – release insulin after a meal . Before that , insulin molecules are stored in tiny granules inside the β-cells; these granules must fuse with the cells’ surface membranes to release th... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2019 | Fusion pore regulation by cAMP/Epac2 controls cargo release during insulin exocytosis |
Animals mimicking other organisms or using camouflage to deceive predators are vital survival strategies . Modern and fossil insects can simulate diverse objects . Lichens are an ancient symbiosis between a fungus and an alga or a cyanobacterium that sometimes have a plant-like appearance and occasionally are mimicked ... | Many insects mimic other organisms or use camouflage to hide from predators . For example , some modern animals mimic the organism lichens , which are formed from algae and fungus , and grow almost everywhere on Earth , from the Arctic to the desert . The most iconic example of an insect mimicking a species of lichen i... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"ecology",
"evolutionary",
"biology"
] | 2020 | Lichen mimesis in mid-Mesozoic lacewings |
Cell-intrinsic and extrinsic signals regulate the state and fate of stem and progenitor cells . Recent advances in metabolomics illustrate that various metabolic pathways are also important in regulating stem cell fate . However , our understanding of the metabolic control of the state and fate of progenitor cells is i... | Stem cells are special precursor cells , found in all animals from flies to humans , that can give rise to all the mature cell types in the body . Their job is to generate supplies of new cells wherever these are needed . This is important because it allows damaged or worn-out tissues to be repaired and replaced by fre... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2020 | Fatty acid β-oxidation is required for the differentiation of larval hematopoietic progenitors in Drosophila |
T-cell recognition of self and foreign peptide antigens presented in major histocompatibility complex molecules ( pMHC ) is essential for life-long immunity . How the ability of the CD4+ T-cell compartment to bind self- and foreign-pMHC changes over the lifespan remains a fundamental aspect of T-cell biology that is la... | The immune system's T cells help the body to recognize and destroy harmful pathogens , such as viruses and bacteria . T cells ‘remember’ immunity-inducing fragments , called antigens , from the pathogens they have encountered . This memory then allows the immune system to quickly fend off infections if those pathogens ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"short",
"report",
"immunology",
"and",
"inflammation"
] | 2015 | Self-recognition drives the preferential accumulation of promiscuous CD4+ T-cells in aged mice |
Loss of function of the X-linked gene encoding methyl-CpG binding protein 2 ( MeCP2 ) causes the progressive neurological disorder Rett syndrome ( RTT ) . Conversely , duplication or triplication of Xq28 causes an equally wide-ranging progressive neurological disorder , MECP2 duplication syndrome , whose features overl... | Rett syndrome is a disorder that affects the development of the brain after birth . Infants with this condition develop as normal until they are 6–18 months old , when the development of their language and motor skills stops , or even regresses . Most cases of Rett syndrome are caused by mutations in a gene called MECP... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Rett-causing mutations reveal two domains critical for MeCP2 function and for toxicity in MECP2 duplication syndrome mice |
John Maynard Smith compared protein evolution to the game where one word is converted into another a single letter at a time , with the constraint that all intermediates are words: WORD→WORE→GORE→GONE→GENE . In this analogy , epistasis constrains evolution , with some mutations tolerated only after the occurrence of ot... | During evolution , the effect of one mutation on a protein can depend on whether another mutation is also present . This phenomenon is similar to the game in which one word is converted to another word , one letter at a time , subject to the rule that all the intermediate steps are also valid words: for example , the w... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2013 | Stability-mediated epistasis constrains the evolution of an influenza protein |
A newfound signaling pathway employs a GGDEF enzyme with unique activity compared to the majority of homologs associated with bacterial cyclic di-GMP signaling . This system provides a rare opportunity to study how signaling proteins natively gain distinct function . Using genetic knockouts , riboswitch reporters , and... | Microscopic organisms known as bacteria are found in virtually every environment on the planet . One reason bacteria are so successful is that they are able to form communities known as biofilms on surfaces in animals and other living things , as well as on rocks and other features in the environment . These biofilms p... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2019 | Structure and mechanism of a Hypr GGDEF enzyme that activates cGAMP signaling to control extracellular metal respiration |
Morphogens function in concentration-dependent manners to instruct cell fate during tissue patterning . The cytoneme morphogen transport model posits that specialized filopodia extend between morphogen-sending and responding cells to ensure that appropriate signaling thresholds are achieved . How morphogens are transpo... | During development , cells must work together and talk to each other to build the organs and tissues of the growing embryo . To communicate precisely with long-distance targets , cells can project a series of thin finger-like structures known as cytonemes . Cells use these miniature highways to exchange cargo and signa... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2021 | Cytoneme delivery of Sonic Hedgehog from ligand-producing cells requires Myosin 10 and a Dispatched-BOC/CDON co-receptor complex |
During eukaryotic evolution , genome size has increased disproportionately to nuclear volume , necessitating greater degrees of chromatin compaction in higher eukaryotes , which have evolved several mechanisms for genome compaction . However , it is unknown whether histones themselves have evolved to regulate chromatin... | There are up to three meters of DNA in a human cell . To fit this length into the cell's nucleus in an organized manner , DNA is wrapped around proteins called histones and then tightly packaged to form a structure called chromatin . The interaction between the histones and the DNA is helped by certain amino acids on t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"cell",
"biology"
] | 2014 | Evolution of histone 2A for chromatin compaction in eukaryotes |
The Endosomal Sorting Complexes Required for Transport III ( ESCRT-III ) proteins are critical for cellular membrane scission processes with topologies inverted relative to clathrin-mediated endocytosis . Some viruses appropriate ESCRT-IIIs for their release . By imaging single assembling viral-like particles of HIV-1 ... | Viruses need to be able to enter and leave the cells of their hosts to multiply and spread infections . Once inside the cell , many viruses , including the HIV virus , hijack the cell’s genetic material to produce more HIV particles and release them back into the surroundings . As the new viruses leave the cell , they ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2018 | Timing of ESCRT-III protein recruitment and membrane scission during HIV-1 assembly |
Cytotoxic T lymphocytes ( CTLs ) are thought to arrive at target sites either via random search or following signals by other leukocytes . Here , we reveal independent emergent behaviour in CTL populations attacking tumour masses . Primary murine CTLs coordinate their migration in a process reminiscent of the swarming ... | Immune cells known as cytotoxic T lymphocytes , or CTLs for short , move around the body searching for infected or damaged cells that may cause harm . Once these specialised killer cells identify a target , they launch an attack , removing the harmful cell from the body . CTLs can also recognise and eliminate cancer ce... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"immunology",
"and",
"inflammation"
] | 2020 | Cytotoxic T cells swarm by homotypic chemokine signalling |
Immunoglobulins ( Igs ) are a crown jewel of jawed vertebrate evolution . Through recombination and mutation of small numbers of genes , Igs can specifically recognize a vast variety of natural and man-made organic molecules . Jawless vertebrates evolved a parallel system of humoral immunity , which recognizes antigens... | Influenza viruses infect ten of millions of people each year . To conquer a flu infection , the human immune system develops antibodies that hasten recovery and prevent future flu infections . Unfortunately , flu is constantly changing in response to the human immune response , and antibodies induced by previous infect... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"immunology",
"and",
"inflammation"
] | 2015 | Lamprey VLRB response to influenza virus supports universal rules of immunogenicity and antigenicity |
Larval recruitment , the transition of pelagic larvae into reef-associated juveniles , is a critical step for the resilience of marine fish populations but its molecular control is unknown . Here , we investigate whether thyroid-hormones ( TH ) and their receptors ( TR ) coordinate the larval recruitment of the coral-r... | Many animals go through a larval phase before developing into an adult . This transformation is called metamorphosis , and it is regulated by hormones of the thyroid gland in vertebrates . For example , most fish found on coral reefs actually spend the first part of their life as free-swimming larvae out in the ocean .... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"ecology",
"developmental",
"biology"
] | 2017 | Fish larval recruitment to reefs is a thyroid hormone-mediated metamorphosis sensitive to the pesticide chlorpyrifos |
Sox genes encode a set of highly conserved transcription factors that regulate many developmental processes . In insects , the SoxB gene Dichaete is the only Sox gene known to be involved in segmentation . To determine if similar mechanisms are used in other arthropods , we investigated the role of Sox genes during seg... | Insects , spiders , centipedes and lobsters all belong to a group of animals known as arthropods . A common feature of these animals is that their bodies are made up of repeated segments . However different arthropods build their segmented bodies in different ways . For example , the fruit fly makes all of its segments... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"evolutionary",
"biology"
] | 2018 | A SoxB gene acts as an anterior gap gene and regulates posterior segment addition in a spider |
It remains challenging to relate EEG and MEG to underlying circuit processes and comparable experiments on both spatial scales are rare . To close this gap between invasive and non-invasive electrophysiology we developed and recorded human-comparable EEG in macaque monkeys during visual stimulation with colored dynamic... | Neurons carry information in the form of electrical signals , which we can listen to by applying sensors to the scalp: the resulting recordings are called an EEG . Electrical activity within the brain also generates a weak magnetic field above the scalp , which can be measured using a technique known as MEG . Both EEG ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2019 | Monkey EEG links neuronal color and motion information across species and scales |
Although it is a central question in biology , how cell shape controls intracellular dynamics largely remains an open question . Here , we show that the shape of Arabidopsis pavement cells creates a stress pattern that controls microtubule orientation , which then guides cell wall reinforcement . Live-imaging , combine... | The surfaces of plants are covered in epithelial cells that come in many different shapes , suggesting that individual cells must have some control over their own shape . An unusually shaped epithelial cell is the pavement cell , which looks like a jigsaw puzzle piece and is found in the leaves of many flowering plants... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"plant",
"biology",
"cell",
"biology"
] | 2014 | Subcellular and supracellular mechanical stress prescribes cytoskeleton behavior in Arabidopsis cotyledon pavement cells |
Perforin-2 ( MPEG1 ) is an effector of the innate immune system that limits the proliferation and spread of medically relevant Gram-negative , -positive , and acid fast bacteria . We show here that a cullin-RING E3 ubiquitin ligase ( CRL ) complex containing cullin-1 and βTrCP monoubiquitylates Perforin-2 in response t... | A wide range of bacteria and other microbes can infect animals and cause disease . Throughout evolution , these microbes and their hosts have been fighting never ending arms races in which the microbes deploy ever more elaborate weapons , while the hosts adapt to defend themselves . An animal's first line of defense is... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"immunology",
"and",
"inflammation"
] | 2015 | Enteric pathogens deploy cell cycle inhibiting factors to block the bactericidal activity of Perforin-2 |
Meiotic drivers are parasitic loci that force their own transmission into greater than half of the offspring of a heterozygote . Many drivers have been identified , but their molecular mechanisms are largely unknown . The wtf4 gene is a meiotic driver in Schizosaccharomyces pombe that uses a poison-antidote mechanism t... | Meiotic drivers are genes that break the normal rules of inheritance . Usually , a gene has a 50% chance of passing on to the next generation . Meiotic drivers force their way into the next generation by poisoning the gametes ( the sex cells that combine to form a zygote ) that do not carry them . Harnessing the power ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"cell",
"biology"
] | 2020 | The wtf4 meiotic driver utilizes controlled protein aggregation to generate selective cell death |
Autophagy is an important intracellular catabolic mechanism involved in the removal of misfolded proteins . Atg14L , the mammalian ortholog of Atg14 in yeast and a critical regulator of autophagy , mediates the production PtdIns3P to initiate the formation of autophagosomes . However , it is not clear how Atg14L is reg... | Proteins need to be folded into specific three-dimensional shapes for them to work properly . However , the folding process does not always work perfectly , and proteins are sometimes misfolded . If left to accumulate , these misfolded proteins can damage cells , and most long-term human neurodegenerative diseases , su... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2015 | G-protein-coupled receptors regulate autophagy by ZBTB16-mediated ubiquitination and proteasomal degradation of Atg14L |
Regulation of organ growth is a poorly understood process . In the long bones , the growth plates ( GPs ) drive elongation by generating a scaffold progressively replaced by bone . Although studies have focused on intrinsic GP regulation , classic and recent experiments suggest that local signals also modulate GP funct... | As bones grow , their size is carefully controlled and coordinated with the growth of the other organs in the body . The mechanisms that control organ size also help the body to recover from injury , and play a key role in controlling body size and proportions . Over the course of evolution , these mechanisms have like... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods",
"Acknowledgments"
] | [
"developmental",
"biology"
] | 2017 | Altered paracrine signaling from the injured knee joint impairs postnatal long bone growth |
The neural circuits responsible for animal behavior remain largely unknown . We summarize new methods and present the circuitry of a large fraction of the brain of the fruit fly Drosophila melanogaster . Improved methods include new procedures to prepare , image , align , segment , find synapses in , and proofread such... | Animal brains of all sizes , from the smallest to the largest , work in broadly similar ways . Studying the brain of any one animal in depth can thus reveal the general principles behind the workings of all brains . The fruit fly Drosophila is a popular choice for such research . With about 100 , 000 neurons – compared... | [
"Abstract",
"Introduction"
] | [
"computational",
"and",
"systems",
"biology",
"neuroscience"
] | 2020 | A connectome and analysis of the adult Drosophila central brain |
Mutations in the Trypanosoma brucei aquaporin AQP2 are associated with resistance to pentamidine and melarsoprol . We show that TbAQP2 but not TbAQP3 was positively selected for increased pore size from a common ancestor aquaporin . We demonstrate that TbAQP2’s unique architecture permits pentamidine permeation through... | African sleeping sickness is a potentially deadly illness caused by the parasite Trypanosoma brucei . The disease is treatable , but many of the current treatments are old and are becoming increasingly ineffective . For instance , resistance is growing against pentamidine , a drug used in the early stages in the diseas... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2020 | Positively selected modifications in the pore of TbAQP2 allow pentamidine to enter Trypanosoma brucei |
The NuRD complex is a multi-protein transcriptional corepressor that couples histone deacetylase and ATP-dependent chromatin remodelling activities . The complex regulates the higher-order structure of chromatin , and has important roles in the regulation of gene expression , DNA damage repair and cell differentiation ... | The correct regulation of our genes is essential for life . Genes are actively switched on or off through the action of assemblies of proteins that act together as molecular machines . Some of these machines alter the way that DNA is packaged inside cells . Packaged DNA – called chromatin – consists of DNA wrapped arou... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | The structure of the core NuRD repression complex provides insights into its interaction with chromatin |
Adhesion and morphogenesis of many non-muscle cells are guided by contractile actomyosin bundles called ventral stress fibers . While it is well established that stress fibers are mechanosensitive structures , physical mechanisms by which they assemble , align , and mature have remained elusive . Here we show that arcs... | Muscle cells are the best-known example of a cell in the human body that can contract . These cells contain bundles of filaments made of proteins called actin and myosin , which can generate pulling forces . However , many other cells in the human body also rely on similar “contractile actomyosin bundles” to help them ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2015 | Generation of contractile actomyosin bundles depends on mechanosensitive actin filament assembly and disassembly |
Unlike dogs and cats , people do not point their ears as they focus attention on novel , salient , or task-relevant stimuli . Our species may nevertheless have retained a vestigial pinna-orienting system that has persisted as a 'neural fossil’ within in the brain for about 25 million years . Consistent with this hypoth... | Dogs , cats , monkeys and other animals perk their ears in the direction of sounds they are interested in . Humans and their closest ape relatives , however , appear to have lost this ability . Some humans are able to wiggle their ears , suggesting that some of the brain circuits and muscles that allow automatic ear mo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2020 | Vestigial auriculomotor activity indicates the direction of auditory attention in humans |
Recognition and elimination of tumor cells by the immune system is crucial for limiting tumor growth . Natural killer ( NK ) cells become activated when the receptor NKG2D is engaged by ligands that are frequently upregulated in primary tumors and on cancer cell lines . However , the molecular mechanisms driving NKG2D ... | Cancer is caused by a series of mutations that result in uncontrolled cell growth and division . Yet , the body's immune system can often detect and destroy abnormal cells before they cause tumors and disease . Natural killer cells are part of the immune system and have receptors on their surface that allow them to tel... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2015 | A forward genetic screen reveals novel independent regulators of ULBP1, an activating ligand for natural killer cells |
Myxobacteria are known for complex social behaviors including outer membrane exchange ( OME ) , in which cells exchange large amounts of outer membrane lipids and proteins upon contact . The TraA cell surface receptor selects OME partners based on a variable domain . However , traA polymorphism alone is not sufficient ... | Most people do not think of bacteria as having a social life . However , some groups , such as myxobacteria , are highly cooperative . Although these microbes exist as individual cells , they can also move and hunt in coordinated packs and when nutrients are low , about a million cells come together to build spore-fill... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2017 | Infectious polymorphic toxins delivered by outer membrane exchange discriminate kin in myxobacteria |
Dinitrogen reduction in the biological nitrogen cycle is catalyzed by nitrogenase , a two-component metalloenzyme . Understanding of the transformation of the inert resting state of the active site FeMo-cofactor into an activated state capable of reducing dinitrogen remains elusive . Here we report the catalysis depend... | The element nitrogen is required for all forms of life , and is an essential component of important biological molecules such as DNA and proteins . The most abundant form of nitrogen is dinitrogen , which comprises 78% of the Earth’s atmosphere . However , dinitrogen is highly unreactive , and so the nitrogen must be c... | [
"Abstract",
"Introduction",
"Methods"
] | [
"short",
"report",
"biochemistry",
"and",
"chemical",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2015 | Catalysis-dependent selenium incorporation and migration in the nitrogenase active site iron-molybdenum cofactor |
Chitin is a fungal microbe-associated molecular pattern recognized in Arabidopsis by a lysin motif receptor kinase ( LYK ) , AtCERK1 . Previous research suggested that AtCERK1 is the major chitin receptor and mediates chitin-induced signaling through homodimerization and phosphorylation . However , the reported chitin ... | Invading fungi are responsible for many of the plant diseases that affect global crop production . Plants have to be able to identify these fungi , and activate the right defense strategies if they are to protect themselves . Chitin is a polymer that is found in the cell walls of all fungi , but not in plants , so if t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"plant",
"biology"
] | 2014 | The kinase LYK5 is a major chitin receptor in Arabidopsis and forms a chitin-induced complex with related kinase CERK1 |
Multivalent presentation of viral glycoproteins can substantially increase the elicitation of antigen-specific antibodies . To enable a new generation of anti-viral vaccines , we designed self-assembling protein nanoparticles with geometries tailored to present the ectodomains of influenza , HIV , and RSV viral glycopr... | Vaccines train the immune system to recognize a specific virus or bacterium so that the body can be better prepared against these harmful agents . To do so , many vaccines contain viral molecules called glycoproteins , which are specific to each type of virus . Glycoproteins that sit at the surface of the virus can act... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"immunology",
"and",
"inflammation"
] | 2020 | Tailored design of protein nanoparticle scaffolds for multivalent presentation of viral glycoprotein antigens |
Decisions are accompanied by a degree of confidence that a selected option is correct . A sequential sampling framework explains the speed and accuracy of decisions and extends naturally to the confidence that the decision rendered is likely to be correct . However , discrepancies between confidence and accuracy sugges... | To understand how the brain makes decisions is to understand how we think – how we deal with information , interpret it and agree with a particular interpretation of the information . Neuroscience has begun to uncover the mechanisms that underlie these processes by linking the activity of nerve cells in the brain to di... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | A common mechanism underlies changes of mind about decisions and confidence |
Thousands of long noncoding RNAs ( lncRNAs ) have been discovered , yet the function of the vast majority remains unclear . Here , we show that a p53-regulated lncRNA which we named PINCR ( p53-induced noncoding RNA ) , is induced ~100-fold after DNA damage and exerts a prosurvival function in human colorectal cancer c... | Though DNA contains the information needed to build the proteins that keep cells alive , only 2% of the DNA in a human cell codes for proteins . The remaining 98% is referred to as non-coding DNA . The information in some of these non-coding regions can still be copied into molecules of RNA , including long molecules c... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cancer",
"biology"
] | 2017 | Prosurvival long noncoding RNA PINCR regulates a subset of p53 targets in human colorectal cancer cells by binding to Matrin 3 |
Biological homeostasis invokes modulatory responses aimed at stabilizing internal conditions . Using tunable photo- and mechano-stimulation , we identified two distinct categories of homeostatic responses during the sleep-like state of Caenorhabditis elegans ( lethargus ) . In the presence of weak or no stimuli , exten... | The regenerative properties of sleep are required by all animals , with even the simplest animal , the nematode Caenorhabditis elegans , displaying a sleep-like state called lethargus . During development , nematodes must pass through four larval stages en route to adulthood , and the end of each stage is preceded by a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Homeostasis in C. elegans sleep is characterized by two behaviorally and genetically distinct mechanisms |
Resistance mutations against one drug can elicit collateral sensitivity against other drugs . Multi-drug treatments exploiting such trade-offs can help slow down the evolution of resistance . However , if mutations with diverse collateral effects are available , a treated population may evolve either collateral sensiti... | Drugs known as antibiotics are the main treatment for most serious infections caused by bacteria . However , many bacteria are acquiring genetic mutations that make them resistant to the effects of one or more types of antibiotics , making them harder to eliminate . One way to tackle drug-resistant bacteria is to devel... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology"
] | 2021 | The population genetics of collateral resistance and sensitivity |
Recurrent connections are thought to be a common feature of the neural circuits that encode memories , but how memories are laid down in such circuits is not fully understood . Here we present evidence that courtship memory in Drosophila relies on the recurrent circuit between mushroom body gamma ( MBγ ) , M6 output , ... | Memories help to shape behavior , and can last from a few seconds to an entire lifetime . Working memory , in which information is temporarily held available for use in an ongoing task , is the most fleeting form of memory . It relies on persistent activation of a network of nerve cells or neurons that represent the in... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2018 | Persistent activity in a recurrent circuit underlies courtship memory in Drosophila |
In competitive situations , winning depends on selecting actions that surprise the opponent . Such unpredictable action can be generated based on representations of the opponent’s strategy and choice history ( model-based counter-prediction ) or by choosing actions in a memory-free , stochastic manner . Across five dif... | The best predictor of future behavior is past behavior , so the saying goes . And studies show that in many situations , we do have a tendency to repeat whatever we did last time , particularly if it led to success . But while this is an efficient way to decide what to do , it is not always the best strategy . In many ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2019 | Balancing model-based and memory-free action selection under competitive pressure |
Reading frame maintenance is critical for accurate translation . We show that the conserved eukaryotic/archaeal protein Mbf1 acts with ribosomal proteins Rps3/uS3 and eukaryotic Asc1/RACK1 to prevent frameshifting at inhibitory CGA-CGA codon pairs in the yeast Saccharomyces cerevisiae . Mutations in RPS3 that allow fra... | Proteins perform all the chemical reactions needed to keep a cell alive; thus , it is essential to assemble them correctly . They are made by molecular machines called ribosomes , which follow a sequence of instructions written in genetic code in molecules known as mRNAs . Ribosomes essentially read the genetic code th... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2018 | Multi-protein bridging factor 1(Mbf1), Rps3 and Asc1 prevent stalled ribosomes from frameshifting |
Animals integrate the different senses to facilitate event-detection for navigation in their environment . In vertebrates , the optic tectum ( superior colliculus ) commands gaze shifts by synaptic integration of different sensory modalities . Recent works suggest that tectum can elaborate gaze reorientation commands o... | Many events occur around us simultaneously , which we detect through our senses . A critical task is to decide which of these events is the most important to look at in a given moment of time . This problem is solved by an ancient area of the brain called the optic tectum ( known as the superior colliculus in mammals )... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Spatiotemporal interplay between multisensory excitation and recruited inhibition in the lamprey optic tectum |
The bacterial plasma membrane is an important cellular compartment . In recent years it has become obvious that protein complexes and lipids are not uniformly distributed within membranes . Current hypotheses suggest that flotillin proteins are required for the formation of complexes of membrane proteins including cell... | Every living cell is enclosed by a flexible membrane made of molecules known as phospholipids , which protects the cell from harmful chemicals and other threats . In bacteria and some other organisms , a rigid structure known as the cell wall sits just outside of the membrane and determines the cell’s shape . There are... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"microbiology",
"and",
"infectious",
"disease"
] | 2020 | Flotillin-mediated membrane fluidity controls peptidoglycan synthesis and MreB movement |
A major constraint on the evolution of large body sizes in animals is an increased risk of developing cancer . There is no correlation , however , between body size and cancer risk . This lack of correlation is often referred to as 'Peto's Paradox' . Here , we show that the elephant genome encodes 20 copies of the tumo... | As time passes , healthy cells are more likely to become cancerous because more and more damaging mutations accumulate in the cell’s DNA . Assuming that all cells have a similar risk of acquiring mutations , larger and longer-lived animals – like elephants – should have a higher risk of cancer than smaller , shorter-li... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"cell",
"biology"
] | 2016 | TP53 copy number expansion is associated with the evolution of increased body size and an enhanced DNA damage response in elephants |
The cJun NH2-terminal kinase ( JNK ) signaling pathway is implicated in the response to metabolic stress . Indeed , it is established that the ubiquitously expressed JNK1 and JNK2 isoforms regulate energy expenditure and insulin resistance . However , the role of the neuron-specific isoform JNK3 is unclear . Here we de... | Consuming the right amount of food is important for health . Eating too little for a long time causes damage to organs , and overeating can cause harm as well , in the form of conditions such as obesity and type 2 diabetes . Several signaling molecules and brain regions are linked to controlling food consumption and en... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"neuroscience"
] | 2016 | Excitatory transmission onto AgRP neurons is regulated by cJun NH2-terminal kinase 3 in response to metabolic stress |
Cancer cells display aneuploid karyotypes and typically mis-segregate chromosomes at high rates , a phenotype referred to as chromosomal instability ( CIN ) . To test the effects of aneuploidy on chromosome segregation and other mitotic phenotypes we used the colorectal cancer cell line DLD1 ( 2n = 46 ) and two variant... | The DNA in a human cell is divided between forty-six structures called chromosomes . Before a cell divides , it copies every chromosome so that each daughter cell will have the same DNA as the parent cell . These chromosomes align in the center of the cell and then the matching chromosomes are separated and pulled to o... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression",
"cell",
"biology"
] | 2015 | Chromosome mis-segregation and cytokinesis failure in trisomic human cells |
Four stress-sensing kinases phosphorylate the alpha subunit of eukaryotic translation initiation factor 2 ( eIF2α ) to activate the integrated stress response ( ISR ) . In animals , the ISR is antagonised by selective eIF2α phosphatases comprising a catalytic protein phosphatase 1 ( PP1 ) subunit in complex with a PPP1... | For a cell to build a protein , it must first copy the instructions contained within a gene . A complex molecular machine called a ribosome then reads these instructions and translates them into a protein . This translation process involves a number of steps . Proteins called eukaryotic translation initiation factors (... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biochemistry",
"and",
"chemical",
"biology",
"cell",
"biology"
] | 2015 | Actin dynamics tune the integrated stress response by regulating eukaryotic initiation factor 2α dephosphorylation |
Mitochondrial DNA copy number ( mtDNA-CN ) is an accessible blood-based measurement believed to capture underlying mitochondrial ( MT ) function . The specific biological processes underpinning its regulation , and whether those processes are causative for disease , is an area of active investigation . We developed a n... | Our cells are powered by small internal compartments known as mitochondria , which host several copies of their own ‘mitochondrial’ genome . Defects in these semi-autonomous structures are associated with a range of severe , and sometimes fatal conditions: easily checking the health of mitochondria through cheap , quic... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"medicine",
"genetics",
"and",
"genomics"
] | 2022 | GWAS and ExWAS of blood mitochondrial DNA copy number identifies 71 loci and highlights a potential causal role in dementia |
Hair greying is a hallmark of aging generally believed to be irreversible and linked to psychological stress . Here , we develop an approach to profile hair pigmentation patterns ( HPPs ) along individual human hair shafts , producing quantifiable physical timescales of rapid greying transitions . Using this method , w... | Hair greying is a visible sign of aging that affects everyone . The loss of hair color is due to the loss of melanin , a pigment found in the skin , eyes and hair . Research in mice suggests stress may accelerate hair greying , but there is no definitive research on this in humans . This is because there are no researc... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"medicine",
"cell",
"biology"
] | 2021 | Quantitative mapping of human hair greying and reversal in relation to life stress |
Clinical observations indicate that COVID-19 is a systemic disease . An investigation of the viral distribution within the human body and its correlation with tissue damage can aid in understanding the pathophysiology of SARS-CoV-2 infection . We present a detailed mapping of the viral RNA in 61 tissues and organs of 1... | Since the discovery of the new coronavirus that causes COVID-19 , scientists have been scrambling to understand the different features of the virus . While a lot more is now known about SARS-CoV-2 , several key questions have proved more difficult to answer . For example , it remained unclear where the virus travels to... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease",
"immunology",
"and",
"inflammation"
] | 2021 | Early postmortem mapping of SARS-CoV-2 RNA in patients with COVID-19 and the correlation with tissue damage |
Insulin gene mutations are a leading cause of neonatal diabetes . They can lead to proinsulin misfolding and its retention in endoplasmic reticulum ( ER ) . This results in increased ER-stress suggested to trigger beta-cell apoptosis . In humans , the mechanisms underlying beta-cell failure remain unclear . Here we sho... | Insulin is a hormone that is crucial for maintaining normal blood sugar levels and is produced by so called beta cells in the pancreas . If the beta cells in the body stop making insulin , blood sugar levels start to rise , which can lead to diabetes . A form of diabetes known as neonatal diabetes , where the body stop... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"stem",
"cells",
"and",
"regenerative",
"medicine"
] | 2018 | Insulin mutations impair beta-cell development in a patient-derived iPSC model of neonatal diabetes |
The nucleolus is a membrane-less organelle formed through liquid-liquid phase separation of its components from the surrounding nucleoplasm . Here , we show that nucleophosmin ( NPM1 ) integrates within the nucleolus via a multi-modal mechanism involving multivalent interactions with proteins containing arginine-rich l... | Inside cells , machines called ribosomes assemble proteins from building blocks known as amino acids . Cells can alter the numbers of ribosomes they produce to match the cell’s demand for new proteins . For instance , when cells grow they require a lot of new proteins and therefore more ribosomes are produced . However... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2016 | Nucleophosmin integrates within the nucleolus via multi-modal interactions with proteins displaying R-rich linear motifs and rRNA |
Engineering of GPCR constructs with improved thermostability is a key for successful structural and biochemical studies of this transmembrane protein family , targeted by 40% of all therapeutic drugs . Here we introduce a comprehensive computational approach to effective prediction of stabilizing mutations in GPCRs , n... | The trillions of cells in the human body rely on receptors that sit in their cell membranes to communicate with each other . Hundreds of different receptors belong to the G protein-coupled receptor superfamily ( called GPCRs for short ) and play vital roles in the all organs and bodily systems . Indeed , GPCRs are the ... | [
"Abstract",
"Introduction",
"Computational",
"methods",
"Results",
"Discussion"
] | [
"structural",
"biology",
"and",
"molecular",
"biophysics",
"computational",
"and",
"systems",
"biology"
] | 2018 | Computational design of thermostabilizing point mutations for G protein-coupled receptors |
Imprinted X-inactivation silences genes exclusively on the paternally-inherited X-chromosome and is a paradigm of transgenerational epigenetic inheritance in mammals . Here , we test the role of maternal vs . zygotic Polycomb repressive complex 2 ( PRC2 ) protein EED in orchestrating imprinted X-inactivation in mouse e... | Almost every one of our cells , with a few exceptions , contains the complete set of genes needed to build and maintain the human body . Yet , not all of these genes are active in every cell . Instead , some genes are tagged for activation , while others are silenced . These changes do not alter the genetic code , only... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2019 | Conversion of random X-inactivation to imprinted X-inactivation by maternal PRC2 |
Within neuroscience , psychology , and neuroimaging , the most frequently used statistical approach is null hypothesis significance testing ( NHST ) of the population mean . An alternative approach is to perform NHST within individual participants and then infer , from the proportion of participants showing an effect ,... | Scientists use statistical tools to evaluate observations or measurements from carefully designed experiments . In psychology and neuroscience , these experiments involve studying a randomly selected group of people , looking for patterns in their behaviour or brain activity , to infer things about the population at la... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"tools",
"and",
"resources",
"neuroscience"
] | 2021 | Bayesian inference of population prevalence |
The brain is capable of large-scale reorganization in blindness or after massive injury . Such reorganization crosses the division into separate sensory cortices ( visual , somatosensory . . . ) . As its result , the visual cortex of the blind becomes active during tactile Braille reading . Although the possibility of ... | According to most textbooks , our brain is divided into separate areas that are dedicated to specific senses . We have a visual cortex for vision , a tactile cortex for touch , and so on . However , researchers suspect that this division might not be as fixed as the textbooks say . For example , blind people can switch... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | Massive cortical reorganization in sighted Braille readers |
This paper describes a framework for modelling dopamine function in the mammalian brain . It proposes that both learning and action planning involve processes minimizing prediction errors encoded by dopaminergic neurons . In this framework , dopaminergic neurons projecting to different parts of the striatum encode erro... | In the brain , chemicals such as dopamine allow nerve cells to ‘talk’ to each other and to relay information from and to the environment . Dopamine , in particular , is released when pleasant surprises are experienced: this helps the organism to learn about the consequences of certain actions . If a new flavour of ice-... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computational",
"and",
"systems",
"biology",
"neuroscience"
] | 2020 | Dopamine role in learning and action inference |
Dynamic remodeling of the intrahepatic biliary epithelial tissue plays key roles in liver regeneration , yet the cellular basis for this process remains unclear . We took an unbiased approach based on in vivo clonal labeling and tracking of biliary epithelial cells in the three-dimensional landscape , in combination wi... | Cell proliferation – the process by which cells multiply – plays an important role in many biological processes , including tissue growth , maintenance and remodeling . In these processes , the way cells proliferate is reportedly related to their roles in the tissue and the structures that they form . The biliary tree ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2016 | Heterogeneity and stochastic growth regulation of biliary epithelial cells dictate dynamic epithelial tissue remodeling |
Loss of ESCRT function in Drosophila imaginal discs is known to cause neoplastic overgrowth fueled by mis-regulation of signaling pathways . Its impact on junctional integrity , however , remains obscure . To dissect the events leading to neoplasia , we used transmission electron microscopy ( TEM ) on wing imaginal dis... | Proteins are large molecules responsible for a variety of activities that cells needs to perform to survive; from respiration to copying DNA before cells divide . To perform these roles proteins need to be transported to the correct cell compartment , or to the cell membrane . This protein trafficking depends on the en... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2020 | The ESCRT machinery regulates retromer-dependent transcytosis of septate junction components in Drosophila |
Non-centrosomal microtubule arrays assemble in differentiated tissues to perform mechanical and transport-based functions . In this study , we identify Caenorhabditis elegans NOCA-1 as a protein with homology to vertebrate ninein . NOCA-1 contributes to the assembly of non-centrosomal microtubule arrays in multiple tis... | Microtubules are hollow , rigid filaments that are found in the cells of animals and other eukaryotes . These filaments are built from smaller building blocks called tubulin heterodimers; and in dividing animal cells , they mainly emerge from structures called centrosomes . When a cell is dividing , arrays of microtubu... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology",
"cell",
"biology"
] | 2015 | NOCA-1 functions with γ-tubulin and in parallel to Patronin to assemble non-centrosomal microtubule arrays in C. elegans |
Stem cell homeostasis in plant shoot meristems requires tight coordination between stem cell proliferation and cell differentiation . In Arabidopsis , stem cells express the secreted dodecapeptide CLAVATA3 ( CLV3 ) , which signals through the leucine-rich repeat ( LRR ) -receptor kinase CLAVATA1 ( CLV1 ) and related CL... | Plants are sessile lifeforms that have evolved many ways to overcome this challenge . For example , they can quickly adapt to their environment , and they can grow new organs , such as leaves and flowers , throughout their lifetime . Stem cells are important precursor cells in plants ( and animals ) that can divide and... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"plant",
"biology",
"developmental",
"biology"
] | 2021 | Control of Arabidopsis shoot stem cell homeostasis by two antagonistic CLE peptide signalling pathways |
The poles of the mitotic spindle contain one old and one young centrosome . In asymmetric stem cell divisions , the age of centrosomes affects their behaviour and their probability to remain in the stem cell . In contrast , in symmetric divisions , old and young centrosomes are thought to behave equally . This hypothes... | Cells are able to copy their DNA and then divide to make two daughter cells that each have a complete set of genetic material . In animal cells , the DNA is arranged within structures called chromosomes and groups of proteins called centrosomes control the process that separates the chromosome copies as the cell divide... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2015 | Centrosome age regulates kinetochore–microtubule stability and biases chromosome mis-segregation |
The gene desert upstream of the MYC oncogene on chromosome 8q24 contains susceptibility loci for several major forms of human cancer . The region shows high conservation between human and mouse and contains multiple MYC enhancers that are activated in tumor cells . However , the role of this region in normal developmen... | Our cells each contain close to 20 , 000 genes , which provide the instructions needed to build our bodies and keep us alive . At any one time in the life of the cell , only some of these genes are active . The activity of each gene is constantly regulated to allow the cell to respond to changes in its environment . En... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cancer",
"biology"
] | 2017 | Mice deficient of Myc super-enhancer region reveal differential control mechanism between normal and pathological growth |
The mechanosensing ability of lymphocytes regulates their activation in response to antigen stimulation , but the underlying mechanism remains unexplored . Here , we report that B cell mechanosensing-governed activation requires BCR signaling molecules . PMA-induced activation of PKCβ can bypass the Btk and PLC-γ2 sign... | The human immune system protects the body from harmful bacteria , viruses and other microbes . Immune cells called B cells use proteins called B cell receptors on their surface to identify these invaders . When the B cell receptors detect molecules called antigens on the surface of the microbes , they produce signals t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"immunology",
"and",
"inflammation"
] | 2017 | Substrate stiffness governs the initiation of B cell activation by the concerted signaling of PKCβ and focal adhesion kinase |
Proper development of the CNS axon-glia unit requires bi-directional communication between axons and oligodendrocytes ( OLs ) . We show that the signaling lipid phosphatidylinositol-3 , 5-bisphosphate [PI ( 3 , 5 ) P2] is required in neurons and in OLs for normal CNS myelination . In mice , mutations of Fig4 , Pikfyve ... | Neurons communicate with each other through long cable-like extensions called axons . An insulating sheath called myelin ( or white matter ) surrounds each axon , and allows electrical impulses to travel more quickly . Cells in the brain called oligodendrocytes produce myelin . If the myelin sheath is not properly form... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2016 | PI(3,5)P2 biosynthesis regulates oligodendrocyte differentiation by intrinsic and extrinsic mechanisms |
Constraints on phenotypic variation limit the capacity of organisms to adapt to the multiple selection pressures encountered in natural environments . To better understand evolutionary dynamics in this context , we select Escherichia coli for faster migration through a porous environment , a process which depends on bo... | In nature organisms face many challenges , and species adapt to their environment by changing heritable traits over the course of many generations . How organisms adapt is often limited by trade-offs , in which improving one trait can only come at the expense of another . In the laboratory , scientists use well-control... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"evolutionary",
"biology",
"computational",
"and",
"systems",
"biology"
] | 2017 | Environment determines evolutionary trajectory in a constrained phenotypic space |
Innate lymphoid cells ( ILCs ) contribute to host defence and tissue repair but can induce immunopathology . Recent work has revealed tissue-specific roles for ILCs; however , the question of how a small population has large effects on immune homeostasis remains unclear . We identify two mechanisms that ILC3s utilise t... | Crohn’s disease and ulcerative colitis are diseases in which the body’s own immune system causes inflammation of the large intestine . These autoimmune diseases can be severely debilitating and difficult to treat . However an improved understanding of the factors that contribute to the intestinal inflammation may lead ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"immunology",
"and",
"inflammation"
] | 2016 | ILC3 GM-CSF production and mobilisation orchestrate acute intestinal inflammation |
Bone cells sense and actively adapt to physical perturbations to prevent critical damage . ATP release is among the earliest cellular responses to mechanical stimulation . Mechanical stimulation of a single murine osteoblast led to the release of 70 ± 24 amole ATP , which stimulated calcium responses in neighboring cel... | Athletes' skeletons get stronger with training , while bones weaken in people who cannot move or in astronauts experiencing weightlessness . This is because bone cells thrive when exposed to forces . When a bone cell is exposed to a physical force , the first thing that happens is the release of the energy-rich molecul... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"physics",
"of",
"living",
"systems"
] | 2018 | Mechanically stimulated ATP release from murine bone cells is regulated by a balance of injury and repair |
CRISPR-Cas systems protect bacteria and archaea from phages and other mobile genetic elements , which use small anti-CRISPR ( Acr ) proteins to overcome CRISPR-Cas immunity . Because Acrs are challenging to identify , their natural diversity and impact on microbial ecosystems are underappreciated . To overcome this dis... | Viruses that attack bacteria are known as bacteriophages , or phages for short . Bacteria have developed an antiviral immune system called CRISPR-Cas that works by targeting particular genetic sequences , such as those of an invading phage , for destruction . To counteract this immune system , phages have evolved prote... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2019 | Functional metagenomics-guided discovery of potent Cas9 inhibitors in the human microbiome |
CRISPR/Cas9-based genome editing has yet to be reported in species of the Platyhelminthes . We tested this approach by targeting omega-1 ( ω1 ) of Schistosoma mansoni as proof of principle . This secreted ribonuclease is crucial for Th2 polarization and granuloma formation . Schistosome eggs were exposed to Cas9 comple... | Schistosomiasis is a tropical disease that can cause serious health problems , including damage to the liver and kidneys , infertility and bladder cancer . Nearly a quarter billion people are currently infected , mostly in poor regions of sub-Saharan Africa , the Philippines and Brazil . A freshwater worm known as Schi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"microbiology",
"and",
"infectious",
"disease"
] | 2019 | Programmed genome editing of the omega-1 ribonuclease of the blood fluke, Schistosoma mansoni |
Feeding behaviors require intricately coordinated activation among the muscles of the jaw , tongue , and face , but the neural anatomical substrates underlying such coordination remain unclear . In this study , we investigate whether the premotor circuitry of jaw and tongue motoneurons contain elements for coordination... | Chewing requires highly coordinated movements of the tongue and jaw . The tongue pushes food around the mouth , keeping it within reach of the teeth , while rhythmic movements of the jaw enable the teeth to grind up food without injuring the tongue itself . However , despite the importance of tongue–jaw coordination , ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2014 | Monosynaptic premotor circuit tracing reveals neural substrates for oro-motor coordination |
We examine the impact of targeted disruption of growth hormone-releasing hormone ( GHRH ) in mice on longevity and the putative mechanisms of delayed aging . GHRH knockout mice are remarkably long-lived , exhibiting major shifts in the expression of genes related to xenobiotic detoxification , stress resistance , and i... | There is increasing evidence that the hormonal systems involved in growth , the metabolism of glucose , and the processes that balance energy intake and expenditure might also be involved in the aging process . In rodents , mutations in genes involved in these hormone-signaling pathways can substantially increase lifes... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chromosomes",
"and",
"gene",
"expression"
] | 2013 | Growth hormone-releasing hormone disruption extends lifespan and regulates response to caloric restriction in mice |
Animals use the temporal information from previously experienced periodic events to instruct their future behaviors . The retina and cortex are involved in such behavior , but it remains largely unknown how the thalamus , transferring visual information from the retina to the cortex , processes the periodic temporal pa... | Being able to track the passage of time enables animals to predict when events will occur in the future . This in turn helps them optimize their behavior . Hummingbirds , for example , schedule their foraging visits so that they return to each flower after it has had time to replenish its supply of nectar . In the labo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"neuroscience"
] | 2017 | Representation of time interval entrained by periodic stimuli in the visual thalamus of pigeons |
Endoplasmic Reticulum ( ER ) -derived COPII coated vesicles constitutively transport secretory cargo to the Golgi . However , during starvation-induced stress , COPII vesicles have been implicated as a membrane source for autophagosomes , distinct organelles that engulf cellular components for degradation by macroautop... | When cells experience stressful conditions , such as a shortage of nutrients , they can digest their own material via a ‘self-eating’ process called autophagy and then recycle the products for further use . When autophagy is triggered , a new membrane structure called the autophagosome forms within the cell as it engul... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology"
] | 2016 | Sec24 phosphorylation regulates autophagosome abundance during nutrient deprivation |
Although thrombosis has been extensively studied using various animal models , our understanding of the underlying mechanism remains elusive . Here , using zebrafish model , we demonstrated that smarca5-deficient red blood cells ( RBCs ) formed blood clots in the caudal vein plexus . We further used the anti-thrombosis... | After an injury , cells in our blood ( called red blood cells ) often stick together to form clots to stop us from bleeding and prevent infection . These clots , however , can sometimes develop in veins and arteries , resulting in a condition known as thrombosis . If left untreated , these blockages can be life-threate... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"developmental",
"biology"
] | 2021 | The chromatin-remodeling enzyme Smarca5 regulates erythrocyte aggregation via Keap1-Nrf2 signaling |
The actin cytoskeleton mediates mechanical coupling between cells and their tissue microenvironments . The architecture and composition of actin networks are modulated by force; however , it is unclear how interactions between actin filaments ( F-actin ) and associated proteins are mechanically regulated . Here we empl... | All of the cells in our bodies rely on cues from their surrounding environment to alter their behavior . As well sending each other chemical signals , such as hormones , cells can also detect pressure and physical forces applied by the cells around them . These physical interactions are coordinated by a network of prot... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"biology",
"structural",
"biology",
"and",
"molecular",
"biophysics"
] | 2020 | Molecular mechanism for direct actin force-sensing by α-catenin |
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