48 results found
    1. Cell Biology

    DNA damage checkpoint activation impairs chromatin homeostasis and promotes mitotic catastrophe during aging

    Matthew M Crane et al.
    Activation of a DNA-damage cell cycle checkpoint during aging causes genome instability and senescence in yeast mother cells.
    1. Developmental Biology
    2. Genetics and Genomics

    An alternatively spliced, non-signaling insulin receptor modulates insulin sensitivity via insulin peptide sequestration in C. elegans

    Bryan A Martinez et al.
    A truncated, non-signaling insulin receptor regulates insulin sensitivity in the nematode C. elegans by sequestering insulin peptides and preventing their interaction with full length receptors.
    1. Genetics and Genomics

    Neuronal TORC1 modulates longevity via AMPK and cell nonautonomous regulation of mitochondrial dynamics in C. elegans

    Yue Zhang et al.
    Modulating the nutrient sensor TORC1 only in neurons in C. elegans is sufficient to regulate systemic longevity via inter-tissue signals that remodel mitochondria networks in non neuronal cells.
    1. Neuroscience

    Evolution of neuronal anatomy and circuitry in two highly divergent nematode species

    Ray L Hong et al.
    The substrate for evolutionary divergence does not lie in changes in neuronal cell number or targeting, but rather in sensory perception and synaptic partner choice within invariant, prepatterned neuronal processes.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Dynamic enhancer partitioning instructs activation of a growth-related gene during exit from naïve pluripotency

    Maxim Greenberg et al.
    Three-dimensional chromatin architecture facilitates a promoter switch in order to ensure maintained expression of a gene involved in growth during embryonic stem cell differentiation.
    1. Evolutionary Biology

    Fitness effects of altering gene expression noise in Saccharomyces cerevisiae

    Fabien Duveau et al.
    The impact of changing gene expression noise on fitness reveals beneficial or deleterious effects in a stable environment depending how close the average expression level is to the fitness optimum.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    A new experimental platform facilitates assessment of the transcriptional and chromatin landscapes of aging yeast

    David G Hendrickson et al.
    A new technology for obtaining aged yeast cells helps reveal a striking connection between aging, slow growth, and stress.
    1. Cell Biology

    Heat stress promotes longevity in budding yeast by relaxing the confinement of age-promoting factors in the mother cell

    Sandro Baldi et al.
    To promote longevity under heat stress shares yeast aging factors with progeny through a down-regulation of the diffusion barrier in the membranes between the mitotic cells.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Sir2 phosphorylation through cAMP-PKA and CK2 signaling inhibits the lifespan extension activity of Sir2 in yeast

    Woo Kyu Kang et al.
    The deacetylase Sir2 fine-tunes transcription of PMA1 and other aging related genes in a cAMP-PKA and CK2 signaling dependent manner.
    1. Cell Biology

    Role of SAGA in the asymmetric segregation of DNA circles during yeast ageing

    Annina Denoth-Lippuner et al.
    The SAGA complex binds non-chromosomal DNA circles and prevents their spreading by attaching them to nuclear pores, thereby leading to the concomitant accumulation of DNA circles and pores in ageing yeast mother cells.

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