198 results found
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Transcription-associated topoisomerase 2α (TOP2A) activity is a major effector of cytotoxicity induced by G-quadruplex ligands

    Madeleine Bossaert et al.
    Topoisomerase 2α DNA breaks induced by G-quadruplex ligands are associated with a topological stress resulting from a transcription-dependent mechanism and counteracted by DNA topoisomerase 1 and factors promoting transcription elongation.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    HP1α is a chromatin crosslinker that controls nuclear and mitotic chromosome mechanics

    Amy R Strom et al.
    Micromanipulation experiments demonstrate that HP1α strengthens interphase and mitotic chromosome mechanics and maintains nuclear shape by chromatin crosslinking, separate from histone methylation.
    1. Cell Biology
    2. Neuroscience

    High-fidelity, efficient, and reversible labeling of endogenous proteins using CRISPR-based designer exon insertion

    Haining Zhong et al.
    A high-fidelity and efficient strategy to use CRISPR/Cas9 to reversibly insert large DNA fragments into somatic cells to label or modify endogenous proteins for research and, in the future, for gene therapy.
    1. Cell Biology

    Genome-wide CRISPRi screening identifies OCIAD1 as a prohibitin client and regulatory determinant of mitochondrial Complex III assembly in human cells

    Maxence Le Vasseur et al.
    OCIAD1 associates with prohibitin assemblies and regulates the proteolytic processing and stability of the catalytical Complex III subunit cytochrome c1.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Co-regulation and function of FOXM1/RHNO1 bidirectional genes in cancer

    Carter J Barger et al.
    FOXM1 is co-expressed with its bidirectional gene partner RHNO1, and the two genes promote DNA repair, cell growth and survival, and chemotherapy resistance in ovarian cancer.
    1. Cell Biology

    SARS-CoV-2 requires cholesterol for viral entry and pathological syncytia formation

    David W Sanders et al.
    A high-throughput microscopy screen for drugs that modulate SARS-CoV-2 spike-mediated membrane fusion identifies an essential role for cholesterol in both virus entry and syncytia formation.
    1. Neuroscience

    DIAPH3 deficiency links microtubules to mitotic errors, defective neurogenesis, and brain dysfunction

    Eva On-Chai Lau et al.
    DIAPH3 safeguards integrity of microtubule cytoskeleton during division of neural progenitor cells.
    1. Biochemistry and Chemical Biology

    Time-resolved phosphoproteomics reveals scaffolding and catalysis-responsive patterns of SHP2-dependent signaling

    Vidyasiri Vemulapalli et al.
    Monitoring SHP2 phosphoproteome dynamics identifies new substrate sites and sites protected from dephosphorylation by its SH2 domains, highlighting distinct scaffolding and catalytic activities in effecting a transmembrane signaling response.
    1. Cell Biology

    LAP2alpha maintains a mobile and low assembly state of A-type lamins in the nuclear interior

    Nana Naetar et al.
    The lamin A/C binding protein LAP2α inhibits formation of higher order lamin structures in the nuclear interior in a lamin A/C-phosphorylation-independent manner, thereby regulating chromatin mobility.
    1. Cell Biology

    Optogenetic control of PRC1 reveals its role in chromosome alignment on the spindle by overlap length-dependent forces

    Mihaela Jagrić et al.
    Optogenetic experiments show that bridging microtubules buffer chromosome movements and promote their alignment through forces transferred to the associated kinetochore fibers, which rely on precise regulation of the overlap region.

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