462 results found
    1. Developmental Biology

    SOXF factors regulate murine satellite cell self-renewal and function through inhibition of β-catenin activity

    Sonia Alonso-Martin et al.
    A set of ex vivo and in vivo experiments, including genetic ablation and regeneration studies, identify a key regulatory function of SOXF factors in muscle stem cells in mice.
    1. Developmental Biology

    Loss of Ptpn11 (Shp2) drives satellite cells into quiescence

    Joscha Griger et al.
    The stem cells of the postnatal muscle allow postnatal muscle growth and repair and withdraw from the cell cycle when the tyrosine phosphatase Ptpn11 (Shp2) is inhibited or mutated in mice.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Cellular localization of the cell cycle inhibitor Cdkn1c controls growth arrest of adult skeletal muscle stem cells

    Despoina Mademtzoglou et al.
    Ablation of the Cdkn1c cell cycle inhibitor leads to defective muscle stem cell dynamics and myogenic potential, while progressive cytoplasmic to nuclear cellular localization of the Cdkn1c protein regulates growth arrest.
    1. Cell Biology
    2. Neuroscience

    Specific labeling of synaptic schwann cells reveals unique cellular and molecular features

    Ryan Castro et al.
    The discovery of markers specific to perisynaptic Schwann cells will accelerate the discovery of mechanisms important for their differentiation and function.
    1. Stem Cells and Regenerative Medicine

    Smad4 restricts differentiation to promote expansion of satellite cell derived progenitors during skeletal muscle regeneration

    Nicole D Paris et al.
    Ablation of canonical TGFβ signaling in muscle stem cells at any age is detrimental, and not beneficial, to effective skeletal muscle regeneration due to the promotion of premature fate commitment at the expense of progenitor amplification.
    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary loss of foot muscle during development with characteristics of atrophy and no evidence of cell death

    Mai P Tran et al.
    Evolutionary loss of foot muscle in a bipedal rodent shares similarities with skeletal muscle atrophy, which is typically considered a pathological response to injury or disease.
    1. Cell Biology

    SWELL1 regulates skeletal muscle cell size, intracellular signaling, adiposity and glucose metabolism

    Ashutosh Kumar et al.
    LRRC8A is an essential component of a mechanoresponsive ion channel signaling complex that tunes skeletal muscle differentiation, muscle cell size, function and metabolic pathways to regulate adiposity and systemic glycemia.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Myonuclear accretion is a determinant of exercise-induced remodeling in skeletal muscle

    Qingnian Goh et al.
    Fusion of muscle progenitors drives continuous myonuclear accretion during exercise and impacts various adaptations in skeletal muscle including response to injury and hypertrophy.
    1. Stem Cells and Regenerative Medicine

    Myofiber-specific TEAD1 overexpression drives satellite cell hyperplasia and counters pathological effects of dystrophin deficiency

    Sheryl Southard et al.
    For skeletal muscle in mice, the size of the stem cell pool can be uncoupled from overall tissue size allowing for a dramatic increase in stem cell number.
    1. Medicine
    2. Immunology and Inflammation

    Chronic muscle weakness and mitochondrial dysfunction in the absence of sustained atrophy in a preclinical sepsis model

    Allison M Owen et al.
    Sepsis-induced long-term muscle weakness was reproduced using a refined murine model, which was accompanied by mitochondrial dysfunction in the absence of sustained atrophy, suggesting the promise of mitochondria-targeted post-sepsis therapies.

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