7,318 results found
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Human perivascular stem cell-derived extracellular vesicles mediate bone repair

    Jiajia Xu et al.
    Perivascular extracellular vesicles induce bone repair, and do so via tetraspanin binding to recipient skeletal progenitor cells.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Basalin is an evolutionarily unconstrained protein revealed via a conserved role in flagellum basal plate function

    Samuel Dean et al.
    Basalins are intrinsically disordered proteins with astonishingly high-sequence divergence that are essential for building the transition zone basal plate and for proper central pair nucleation.
    1. Stem Cells and Regenerative Medicine

    Sox9+ messenger cells orchestrate large-scale skeletal regeneration in the mammalian rib

    Stephanie T Kuwahara et al.
    Large-scale skeletal regeneration requires Hh signaling in Sox9+ lineage cells to coordinate callus formation and bone repair.
    1. Cell Biology
    2. Physics of Living Systems

    Mechanically stimulated ATP release from murine bone cells is regulated by a balance of injury and repair

    Nicholas Mikolajewicz et al.
    Bone cells exposed to physiological forces release ATP through repairable membrane injury, generating an intercellular signal that conveys the destructive potential of forces and the adaptive capacity of endangered cells.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cooperative base pair melting by helicase and polymerase positioned one nucleotide from each other

    Divya Nandakumar et al.
    A detailed model of the T7 replisome with the precise positions of the helicase and polymerase at the replication fork explains how catalysis by the two enzymes is coordinated.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Distinct roles for S. cerevisiae H2A copies in recombination and repeat stability, with a role for H2A.1 threonine 126

    Nealia CM House et al.
    Despite differing by only one amino acid in the C-terminal tail, copy 1 of yeast histone 2A has a repair-specific role not shared by copy 2.
    1. Cell Biology
    2. Developmental Biology

    Reactivation of a developmental Bmp2 signaling center is required for therapeutic control of the murine periosteal niche

    Valerie S Salazar et al.
    A periosteal Bmp2 signaling center couples bone length to bone width during development and must be reactivated by clinical bone anabolic therapies to reduce fracture risk and accelerate fracture repair.
    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

    Monoubiquitination by the human Fanconi anemia core complex clamps FANCI:FANCD2 on DNA in filamentous arrays

    Winnie Tan et al.
    Biochemical reconstitution experiments uncover the ubiquitin-mediated function of a DNA repair protein, key to the understanding of Fanconi Anemia, a cancer-associated bone marrow failure syndrome.

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