441 results found
    1. Cell Biology

    Muscle-specific stress fibers give rise to sarcomeres in cardiomyocytes

    Aidan M Fenix et al.
    Sarcomeres in heart muscle cells come from stress fiber-like structures that are mechanistically distinct from stress fibers in non-muscle cells.
    1. Developmental Biology

    Abelson tyrosine-protein kinase 2 regulates myoblast proliferation and controls muscle fiber length

    Jennifer K Lee et al.
    Abl2 regulates myoblast proliferation, thereby controlling the size of the pool of myoblasts available for fusion, providing insight into mechanisms that control myofiber length and signaling between muscle and tendon.
    1. Cell Biology

    Caveolae internalization repairs wounded cells and muscle fibers

    Matthias Corrotte et al.
    Cells repair damage to their outer membranes not by patching them as previously thought, but by using proteins called caveolins to remove the damaged regions by endocytosis.
    1. Cell Biology
    2. Human Biology and Medicine

    Muscle Contraction: Too much of a good thing

    H Lee Sweeney
    A mutation that causes heart disease in humans increases the number of active myosin heads during contraction in the muscles of fruit flies, leading to the progressive dysfunction of the flight muscles and heart tube.
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    1. Cell Biology
    2. Human Biology and Medicine

    Prolonged cross-bridge binding triggers muscle dysfunction in a Drosophila model of myosin-based hypertrophic cardiomyopathy

    William A Kronert et al.
    Integrative analysis of a Drosophila model of hypertrophic cardiomyopathy demonstrates that prolonged binding of the myosin cross-bridge to actin is a root cause of the disorder.
    1. Cell Biology
    2. Developmental Biology

    The Drosophila formin Fhos is a primary mediator of sarcomeric thin-filament array assembly

    Arkadi Shwartz et al.
    Actin is incorporated into the thin-filament arrays of skeletal muscle sarcomeres in discrete steps, and Fhos, the Drosophila homolog of FHOD-family formins, is an essential player in the process.
    1. Neuroscience

    Hypoexcitability precedes denervation in the large fast-contracting motor units in two unrelated mouse models of ALS

    María de Lourdes Martínez-Silva et al.
    The most vulnerable motor units lose a fundamental firing property before the denervation of their muscle fibers in ALS mice, changing our view of the role of excitability in neurodegeneration.
    1. Developmental Biology

    Stage-specific effects of Notch activation during skeletal myogenesis

    Pengpeng Bi et al.
    While Notch activation dedifferentiates newly differentiated muscle cells; it improves the function of muscle fiber as a niche-supporting cell of muscle stem cells.
    1. Cell Biology
    2. Developmental Biology

    Genetic screen in Drosophila muscle identifies autophagy-mediated T-tubule remodeling and a Rab2 role in autophagy

    Naonobu Fujita et al.
    Analyses of a developmentally regulated Drosophila myofiber remodeling program provide insight into induced autophagy required for T-tubule membrane reorganization, and uncover a conserved Rab2 role in autophagosome-lysosome fusion.
    1. Developmental Biology

    Evolution: The beat goes on

    Tobias Wang
    Why is the alligator heart so similar to the hearts of birds and mammals?
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