91 results found
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Evolution of extreme resistance to ionizing radiation via genetic adaptation of DNA repair

    Rose T Byrne et al.
    Experiments on E. coli show that multiple mechanisms contribute to extreme resistance to ionizing radiation in bacteria, with mutations to three genes for DNA repair having a prominent role in one evolved population.
    1. Chromosomes and Gene Expression

    The tardigrade damage suppressor protein binds to nucleosomes and protects DNA from hydroxyl radicals

    Carolina Chavez et al.
    Dsup, a unique protein found only in tardigrades, is a nucleosome-binding protein that protects DNA from damage by hydroxyl radicals, such as those generated by ionizing radiation or oxidants.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Loss of foxo rescues stem cell aging in Drosophila germ line

    Filippo Artoni et al.
    Loss of foxo rescues age-related defects in stem cell-mediated regeneration post-injury.
    1. Stem Cells and Regenerative Medicine

    Stress responsive miR-31 is a major modulator of mouse intestinal stem cells during regeneration and tumorigenesis

    Yuhua Tian et al.
    miR-31 drives proliferation of intestinal stem cells, and protects intestinal stem cells against apoptosis both during homeostasis and regeneration in response to ionizing radiation injury, and promotes intestinal tumorigenesis through regulation of multiple signaling pathways.
    1. Chromosomes and Gene Expression

    The CDK-PLK1 axis targets the DNA damage checkpoint sensor protein RAD9 to promote cell proliferation and tolerance to genotoxic stress

    Takeshi Wakida et al.
    Minimizing anti-proliferation signaling from DNA damage detection machinery is the tactic for the cells to drive proliferation under genotoxic environment, and the function is exerted by Polo-Like-Kinase1 that is frequently over-expressed in cancer cells.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Role of BRCA2 DNA-binding and C-terminal domain in its mobility and conformation in DNA repair

    Maarten W Paul et al.
    Highly conserved C-terminal domains of the tumor suppressor BRCA2 are not essential for accumulation at damaged DNA but affect conformation and cell survival, implying roles beyond delivering strand-exchange protein RAD51.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Bedrock radioactivity influences the rate and spectrum of mutation

    Nathanaëlle Saclier et al.
    Subterranean isopods endemic to regions with large igneous rock formations have a higher mutation rate and display an excess of mutations that are typical of an oxidative stress.
    1. Chromosomes and Gene Expression

    SETD2 is required for DNA double-strand break repair and activation of the p53-mediated checkpoint

    Sílvia Carvalho et al.
    The involvement of SETD2 in an important DNA repair pathway could explain the high frequency of SETD2 mutations in several cancers and may provide an alternative mechanism to evade the p53-mediated checkpoint.
    1. Biochemistry and Chemical Biology

    Synergy between SIRT1 and SIRT6 helps recognize DNA breaks and potentiates the DNA damage response and repair in humans and mice

    Fanbiao Meng et al.
    SIRT1 deacetylates SIRT6 at K33 to facilitate DNA double-strand breaks-recognition, subsequent expansion and local chromatin remodeling.

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