1,490 results found
    1. Genetics and Genomics

    Uncharacterized yeast gene YBR238C, an effector of TORC1 signaling in a mitochondrial feedback loop, accelerates cellular aging via HAP4- and RMD9-dependent mechanisms

    Mohammad Alfatah, Jolyn Jia Jia Lim ... Frank Eisenhaber
    Revealing YBR238C's involvement in the TORC1–mitochondria feedback loop deepens our understanding of aging biology, emphasizing the TOMITO concept as a crucial mechanism in cellular aging regulation.
    1. Genetics and Genomics

    Inter-tissue convergence of gene expression during ageing suggests age-related loss of tissue and cellular identity

    Hamit Izgi, Dingding Han ... Handan Melike Dönertaş
    Cross-sectional transcriptome analysis of mice, covering the whole lifespan, reveals that inter-tissue divergence during development is accompanied by a weaker but widespread convergence during ageing.
    1. Cell Biology

    Metformin alleviates stress-induced cellular senescence of aging human adipose stromal cells and the ensuing adipocyte dysfunction

    Laura Le Pelletier, Matthieu Mantecon ... Veronique Bereziat
    Aging is associated with stress-induced senescence of adipose stromal cells, leading to impaired adipogenesis, oxidative stress, mitochondrial dysfunction, and insulin resistance, all being alleviated by metformin treatment of adipose stromal cells.
    1. Computational and Systems Biology

    Lack of evidence for increased transcriptional noise in aged tissues

    Olga Ibañez-Solé, Alex M Ascensión ... Ander Izeta
    An increase in transcriptional noise generally assumed to characterize aged cells and tissues is shown to derive instead from technical and biological issues that underlie single-cell RNA sequencing experiments.
    1. Genetics and Genomics

    Human genetic analyses of organelles highlight the nucleus in age-related trait heritability

    Rahul Gupta, Konrad J Karczewski ... Vamsi K Mootha
    Although cellular organelles show a functional deterioration in aging, genetic loci associated with common age-associated disease instead nominate nuclear transcription factors across several age-related diseases.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A physicochemical perspective of aging from single-cell analysis of pH, macromolecular and organellar crowding in yeast

    Sara N Mouton, David J Thaller ... Liesbeth M Veenhoff
    In mitotically aging yeast cells, the cytosol acidifies, the distances between the organellar membranes decrease dramatically, but crowding on the scale of the average size protein is relatively stable.
    1. Cell Biology
    2. Developmental Biology

    Mother-daughter asymmetry of pH underlies aging and rejuvenation in yeast

    Kiersten A Henderson, Adam L Hughes, Daniel E Gottschling
    Protons are pumped out of mother cells by a protein that accumulates over time and this leads to cellular aging, but this protein is largely absent from daughter cells, which mediates rejuvenation.
    1. Cell Biology
    2. Developmental Biology

    Osteocytes regulate senescence of bone and bone marrow

    Peng Ding, Chuan Gao ... Junjie Gao
    Partial ablation of osteocytes alters lineage cell specifications in bone and bone marrow, resulting in the acceleration of skeletal aging.
    1. Cell Biology
    2. Computational and Systems Biology

    Saccharomyces cerevisiae goes through distinct metabolic phases during its replicative lifespan

    Simeon Leupold, Georg Hubmann ... Matthias Heinemann
    With replicative age, S. cerevisiae shifts from a fermentative towards an unusual respiratory metabolism, accompanied by a decrease in growth and glucose uptake rate.
    1. Developmental Biology
    2. Genetics and Genomics

    celsr1a is essential for tissue homeostasis and onset of aging phenotypes in the zebrafish

    Chunmei Li, Carrie Barton ... Matthew P Harris
    The use of forward genetic screens in zebrafish identifies a new model of vertebrate aging, defining the regulating of the onset of aging phenotypes through maintenance of progenitor cell populations.

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