3,164 results found
    1. Neuroscience

    A deleterious Nav1.1 mutation selectively impairs telencephalic inhibitory neurons derived from Dravet Syndrome patients

    Yishan Sun, Sergiu P Paşca ... Ricardo E Dolmetsch
    A human cellular model of a prototypical form of intractable childhood epilepsy supports selective impairment of inhibitory neurons as a key pathophysiological mechanism.
    1. Computational and Systems Biology
    2. Neuroscience

    Place-cell capacity and volatility with grid-like inputs

    Man Yi Yim, Lorenzo A Sadun ... Thibaud Taillefumier
    A very large number of place-field maps can be robustly learned by association of external cues with the grid-driven response, however plasticity in the grid-cell inputs renders the place-cell responses volatile.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Intraspecific predator interference promotes biodiversity in ecosystems

    Ju Kang, Shijie Zhang ... Xin Wang
    Intraspecific predator interference enables a wide range of consumer species to coexist with a limited variety of resources, explaining the paradox of the plankton and species diversity patterns across ecosystems.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Broad-scale variation in human genetic diversity levels is predicted by purifying selection on coding and non-coding elements

    David A Murphy, Eyal Elyashiv ... Guy Sella
    Background selection is shown to be the dominant mode of linked selection in humans, with marked effects on diversity levels throughout autosomes.
    1. Cell Biology
    2. Computational and Systems Biology

    A positive-feedback-based mechanism for constriction rate acceleration during cytokinesis in Caenorhabditis elegans

    Renat N Khaliullin, Rebecca A Green ... Karen Oegema
    Positive feedback between contractile ring myosin and compression-driven cortical flow can explain the exponential accumulation of contractile ring components and constriction rate acceleration that ensures timely cell separation during cytokinesis.
    1. Medicine
    2. Stem Cells and Regenerative Medicine

    Adult stem cell-derived complete lung organoid models emulate lung disease in COVID-19

    Courtney Tindle, MacKenzie Fuller ... Soumita Das
    An integrated stem cell-based disease modeling and computational approach demonstrates how proximal airway epithelium is critical for SARS-CoV-2 infectivity and distal alveolar cells are critical for simulating the host responses.
    1. Neuroscience

    Sensorimotor feedback loops are selectively sensitive to reward

    Olivier Codol, Mehrdad Kashefi ... Paul L Gribble
    Motor performance benefits from rewarding contexts via a non-uniform reduction of response latencies and increase in feedback gains across the feedback loops involved in upper limb motor control.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Proofreading through spatial gradients

    Vahe Galstyan, Kabir Husain ... Rob Phillips
    Theoretical study shows how enzymes can achieve substrate proofreading by taking advantage of existing molecular gradients in the cell while not being endowed with structural features typically required for proofreading.
    1. Plant Biology

    A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

    Wannarat Pornsiriwong, Gonzalo M Estavillo ... Barry J Pogson
    Molecular signals from chloroplasts can synergistically interact with the plant hormone, abscisic acid (ABA), to regulate non-canonical signaling pathways mediating fundamental cellular processes including stomatal closure, seed dormancy and germination.
    1. Cell Biology
    2. Physics of Living Systems

    Self-organization of kinetochore-fibers in human mitotic spindles

    William Conway, Robert Kiewisz ... Daniel J Needleman
    A biophysical model in which kinetochore microtubules nucleate at kinetochores and growth polward along nematic streamlines quantitatively explains kinetochore microtubule lengths, orientations, and spatially varying dynamics in metaphase human spindles.

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