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    1. Cell Biology

    Combined effect of cell geometry and polarity domains determines the orientation of unequal division

    Benoit G Godard, Remi Dumollard ... Alex McDougall
    Cell geometry and polarity domains act in concert to determine spindle positioning, with cell geometry modulating the effect of cortical polarity domains by influencing the position of the spindle relative to those polarity domains.
    1. Evolutionary Biology
    2. Genetics and Genomics

    The genomic footprint of social stratification in admixing American populations

    Alex Mas-Sandoval, Sara Mathieson, Matteo Fumagalli
    Social hierarchies resulting from the European colonization of the Americas stratified the population structure, leading to ancestry-related assortative mating and sex bias patterns that can be inferred from the genomes of the populations across the continent.
    1. Neuroscience

    Remapping in a recurrent neural network model of navigation and context inference

    Isabel IC Low, Lisa M Giocomo, Alex H Williams
    Recurrent neural networks trained to navigate and infer latent states exhibit strikingly similar remapping patterns to those observed in navigational brain areas, inspiring new analyses of published data and suggesting a possible function for spontaneous remapping to support context-dependent navigation.
    1. Computational and Systems Biology
    2. Developmental Biology

    Supracellular organization confers directionality and mechanical potency to migrating pairs of cardiopharyngeal progenitor cells

    Yelena Y Bernadskaya, Haicen Yue ... Alex Mogilner
    The migrating pair of cardiac progenitors in the chordate Ciona robusta is the simplest possible supracellular cell collective whose organization helps them overcome resistance from surrounding embryonic tissues during cell migration.
    1. Developmental Biology
    2. Neuroscience

    The laminar organization of the Drosophila ellipsoid body is semaphorin-dependent and prevents the formation of ectopic synaptic connections

    Xiaojun Xie, Masashi Tabuchi ... Alex L Kolodkin
    The organization of layered/laminated axon projections in specific regions of the fruitfly central brain is regulated by short-range repulsive guidance and is critical for local inhibitory circuit formation and function.
    1. Developmental Biology

    The invariant cleavage pattern displayed by ascidian embryos depends on spindle positioning along the cell's longest axis in the apical plane and relies on asynchronous cell divisions

    Rémi Dumollard, Nicolas Minc ... Alex McDougall
    Cell cycle asynchrony regulates apical cell shape to drive cell division orientation in the apical plane.
    1. Microbiology and Infectious Disease

    HIV status alters disease severity and immune cell responses in Beta variant SARS-CoV-2 infection wave

    Farina Karim, Inbal Gazy ... Alex Sigal
    HIV infection increases SARS-CoV-2 disease severity and alters immune cell dynamics in a beta variant dominated infection wave.
    1. Neuroscience

    Hypocretin underlies the evolution of sleep loss in the Mexican cavefish

    James B Jaggard, Bethany A Stahl ... Alex C Keene
    The identification of evolutionarily-derived changes in Hypocretin function within the brains of short-sleeping Mexican cavefish provides a system for investigating the mechanistic basis of sleep differences throughout the animal kingdom.
    1. Neuroscience

    Palmitoylation regulates neuropilin-2 localization and function in cortical neurons and conveys specificity to semaphorin signaling via palmitoyl acyltransferases

    Eleftheria Koropouli, Qiang Wang ... Alex L Kolodkin
    Posttranslational protein palmitoylation and palmitoyl acyltransferase-substrate specificity emerge as a novel mechanism specifying the functional identity of neuronal substrates during the development of the central nervous system.
    1. Structural Biology and Molecular Biophysics

    Site-specific effects of neurosteroids on GABAA receptor activation and desensitization

    Yusuke Sugasawa, Wayland WL Cheng ... Alex S Evers
    Differential, state-dependent occupancy of three discrete binding sites on α1β3 GABAA receptors determines whether a specific neurosteroid analogue potentiates or inhibits GABA-elicited currents or competitively antagonizes neurosteroid action.