266 results found
    1. Cell Biology

    The mitochondrial permeability transition pore activates the mitochondrial unfolded protein response and promotes aging

    Suzanne Angeli et al.
    Loss of the F-ATP synthase c-subunit inhibits a pathological mitochondrial permeability transition pore that is coupled to a maladaptive mitochondrial unfolded protein response while also extending lifespan.
    1. Cell Biology

    SUMO peptidase ULP-4 regulates mitochondrial UPR-mediated innate immunity and lifespan extension

    Kaiyu Gao et al.
    SUMOylation regulates mitochondrial UPR signaling through modulation of transcription factors DVE-1 and ATFS-1.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    PGAM5 promotes lasting FoxO activation after developmental mitochondrial stress and extends lifespan in Drosophila

    Martin Borch Jensen et al.
    A signaling pathway involving PGAM5, ASK1 and JNK induces persistent FoxO activation, chaperone expression and lifespan extension following developmental mitochondrial stress, which can be blocked by mTOR signaling through GCN-2.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    HRI coordinates translation necessary for protein homeostasis and mitochondrial function in erythropoiesis

    Shuping Zhang et al.
    The heme and HRI-mediated eIF2aP–ATF4 integrated stress response in erythropoiesis has a major global impact, especially under the stress condition of iron deficiency.
    1. Cell Biology

    A nuclear-based quality control pathway for non-imported mitochondrial proteins

    Viplendra PS Shakya et al.
    During times of mitochondrial impairment, non-imported mitochondrial precursor proteins are targeted to the nucleus for proteasome-dependent degradation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteotoxicity from aberrant ribosome biogenesis compromises cell fitness

    Blake W Tye et al.
    Rapidly proliferating cells are at risk of compromised cell fitness due to proteostasis collapse from perturbations that interfere with ribosome biogenesis.
    1. Cell Biology

    Unique integrated stress response sensors regulate cancer cell susceptibility when Hsp70 activity is compromised

    Sara Sannino et al.
    Unique integrate stress response sensors differentially trigger pro-survival versus pro-apoptotic responses in cells confronted with Hsp70 inhibitor-associated proteotoxic challenges.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    New insights into the cellular temporal response to proteostatic stress

    Justin Rendleman et al.
    A time-resolved analysis of protein and RNA concentrations and interactions during proteostasis stress highlights the dominant role of translation regulation and a shift of energy metabolism.
    1. Cancer Biology
    2. Cell Biology

    Caspase-mediated cleavage of IRE1 controls apoptotic cell commitment during endoplasmic reticulum stress

    Anna Shemorry et al.
    Biochemical and biological studies reveal that caspases feed back onto the Unfolded Protein Response by cleaving the ER-stress sensor IRE1 to produce a cytoprotective N-terminal fragment that inhibits BAX-dependent apoptosis.
    1. Cell Biology
    2. Neuroscience

    Pregnancy-associated plasma protein-aa regulates endoplasmic reticulum–mitochondria associations

    Mroj Alassaf, Mary C Halloran
    An extracellular modulator of IGF1 signaling, Pappaa, regulates endoplasmic reticulum–mitochondria connections, which are critical for metabolic homeostasis and hair cell survival.

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