3,408 results found
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Human perivascular stem cell-derived extracellular vesicles mediate bone repair

    Jiajia Xu et al.
    Perivascular extracellular vesicles induce bone repair, and do so via tetraspanin binding to recipient skeletal progenitor cells.
    1. Cell Biology
    2. Physics of Living Systems

    Integrin α5β1 nano-presentation regulates collective keratinocyte migration independent of substrate rigidity

    Jacopo Di Russo et al.
    The use of nanopatterned hydrogels and specific integrin α5β1 peptidomimetic revealed that keratinocytes require an optimum inter-ligand spacing to best propagate intercellular forces and efficiently coordinate cell sheet migration.
    1. Cell Biology
    2. Developmental Biology

    Organ sculpting by patterned extracellular matrix stiffness

    Justin Crest et al.
    Direct measurement of finely patterned mechanical properties in a native basement membrane demonstrate how force asymmetries arising from this extracellular matrix, rather than from cells, can precisely sculpt a tissue.
    1. Biochemistry and Chemical Biology

    Structural and functional characterization of G protein–coupled receptors with deep mutational scanning

    Eric M Jones et al.
    Linking deep mutational scanning with engineered transcriptional reporters in human cell lines establishes a generalizable method for exploring pharmacogenomics, structure, and function across broad classes of drug receptors.
    1. Physics of Living Systems

    A multiphase theory for spreading microbial swarms and films

    Siddarth Srinivasan et al.
    A multiphase hydrodynamic theory reveals that the dynamics of colony expansion in microbial swarms and biofilms are limited by the constraints of water and nutrient availability.
    1. Neuroscience

    Spontaneous neurotransmission signals through store-driven Ca2+ transients to maintain synaptic homeostasis

    Austin L Reese, Ege T Kavalali
    Individual neurons can adjust the strength of their synapses by using spontaneous calcium influx through NMDA receptors to trigger the release of additional calcium from intracellular stores, which can in turn be used to regulate protein synthesis.
    1. Neuroscience

    Experience-dependent shaping of hippocampal CA1 intracellular activity in novel and familiar environments

    Jeremy D Cohen et al.
    Comparison of the intracellular activity of hippocampal neurons in novel and familiar environments reveals experience-dependent changes in inputs underlying the formation of stable representations of space.
    1. Neuroscience

    Coordinated neuronal ensembles in primary auditory cortical columns

    Jermyn Z See et al.
    Auditory cortical columns contain small subsets of neurons with highly synchronous activity (cNEs) that create robust sequences of coordinated activity suitable for enhanced information processing and signal transmission beyond the capability of individual neurons.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Drivers and sites of diversity in the DNA adenine methylomes of 93 Mycobacterium tuberculosis complex clinical isolates

    Samuel J Modlin et al.
    Fully assembled DNA methylomes from phylogeographically diverse clinical Mycobacterium tuberculosis complex isolates reveals 'intercellular mosaic methylation' as a source of epigenetic diversity.
    1. Microbiology and Infectious Disease

    Experimentally guided models reveal replication principles that shape the mutation distribution of RNA viruses

    Michael B Schulte et al.
    A mathematical model that combines stochasticity and spatial structure describes the dynamics of the viral population during an infection cycle, and fitting the model to RNA and virus abundances over time shows that poliovirus follows a geometric replication mode.

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