153 results found
    1. Neuroscience

    TrpML-mediated astrocyte microdomain Ca2+ transients regulate astrocyte–tracheal interactions

    Zhiguo Ma, Marc R Freeman
    Astrocyte microdomain calcium transients are mediated by TrpML, stimulated by ROS and tyramine, and mediate astrocyte–tracheal interactions in CNS gas exchange.
    1. Medicine

    Late-life restoration of mitochondrial function reverses cardiac dysfunction in old mice

    Ying Ann Chiao et al.
    Mitochondrial-targeted SS-31 peptide ameliorates mitochondrial dysfunction and rescues pre-existing cardiac dysfunction in old mice, supporting the translational potential of mitochondrial protective interventions to treat age-related diseases.
    1. Microbiology and Infectious Disease

    Differential requirements for cyclase-associated protein (CAP) in actin-dependent processes of Toxoplasma gondii

    Alex Hunt et al.
    Partially overlapping functions of a limited subset of actin binding proteins allow the parasite Toxoplasma gondii to achieve actin regulation required for complex cellular processes.
    1. Cell Biology
    2. Physics of Living Systems

    Cell-scale biophysical determinants of cell competition in epithelia

    Daniel Gradeci et al.
    Mechanical competition is controlled by biophysical parameters that regulate cellular homeostatic density, while biochemical competition is regulated by parameters that influence the organisation of cells in a tissue.
    1. Developmental Biology

    The Hippo pathway controls myofibril assembly and muscle fiber growth by regulating sarcomeric gene expression

    Aynur Kaya-Çopur et al.
    Muscle fiber growth during development is controlled by the Hippo pathway that links the assembly state of the contractile sarcomeres with the transcriptional state of the sarcomeric genes.
    1. Cell Biology

    A disassembly-driven mechanism explains F-actin-mediated chromosome transport in starfish oocytes

    Philippe Bun et al.
    On entry to meiosis, chromosomes scattered in the large oocyte nucleus of starfish are collected by an F-actin network, which contracts by an unexpected, myosin-independent mechanism based on local assembly and global disassembly of actin filaments.
    1. Developmental Biology
    2. Evolutionary Biology

    The evolutionary origin of bilaterian smooth and striated myocytes

    Thibaut Brunet et al.
    Molecular profiling of annelid myocytes reveals that the last common protostome-deuterostome ancestor already possessed a dual musculature, with visceral smooth muscles ensuring digestion and somatic striated muscles ensuring locomotion.
    1. Developmental Biology

    Reciprocal and dynamic polarization of planar cell polarity core components and myosin

    Erin Newman-Smith et al.
    Planar cell polarity (PCP) components and myosin show a parallel temporal polarization in the Ciona notochord and the mutual interaction between these proteins is required for proper tissue-wide polarity.
    1. Immunology and Inflammation
    2. Physics of Living Systems

    T cell stiffness is enhanced upon formation of immunological synapse

    Philipp Jung et al.
    Upon activation of T cell receptors at the contact site, T cells were substantially stiffened at the cell body as well as at the lamellipodia, which is mediated by Ca2+.
    1. Medicine

    Anti-fibrotic activity of a rho-kinase inhibitor restores outflow function and intraocular pressure homeostasis

    Guorong Li et al.
    An FDA-approved, rho-associated kinase inhibitor reverses fibrosis in the conventional outflow pathway of a mouse model of glaucoma and reverses ocular hypertension in patients with steroid glaucoma.

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