6,072 results found
    1. Biochemistry and Chemical Biology
    2. Medicine

    The half-life of the bone-derived hormone osteocalcin is regulated through O-glycosylation in mice, but not in humans

    Omar Al Rifai et al.
    In mice, but not in humans, the bone-derived hormone osteocalcin is O-glycosylated, a post-translational modification controlling its half-life in vivo.
    1. Immunology and Inflammation

    Variations in HLA-B cell surface expression, half-life and extracellular antigen receptivity

    Brogan Yarzabek et al.
    Lymphocytes and monocytes maintain their cell surface HLA-B via different mechanisms, which in turn differently influence cell-surface expression, half-life and peptide receptivity of HLA-B allotypes.
    1. Cell Biology

    RalB directly triggers invasion downstream Ras by mobilizing the Wave complex

    Giulia Zago et al.
    By moving from correlations to causality in cancer signal transduction using optogenetics, the sufficiency of RalB activation to trigger invasion and the underlying molecular mechanisms were established.
    1. Cancer Biology
    2. Stem Cells and Regenerative Medicine

    RAL GTPases mediate EGFR-driven intestinal stem cell proliferation and tumourigenesis

    Máté Nászai et al.
    Combined genetic experiments and cellular trafficking assays in Drosophila and mammalian models uncover a new role of RAS-like GTPases in EGFR signalling activation during tissue regeneration and tumourigenesis through regulation of EGFR internalisation.
    1. Cancer Biology
    2. Cell Biology

    Ral GTPases promote breast cancer metastasis by controlling biogenesis and organ targeting of exosomes

    Shima Ghoroghi et al.
    A combination of animal models reveal how the molecular mechanisms of exosome secretion (RalA/B-dependent) are linked to their cargo content and their function in breast cancer pre-metastatic niche formation.
    1. Immunology and Inflammation

    Epidermal RAF prevents allergic skin disease

    Josipa Raguz et al.
    In keratinocytes, the BRAF and RAF1 proteins work independently to balance the activity of mitogenic and stress kinase cascades and uphold the mechanical and immunological barrier functions of the epidermis.
    1. Cell Biology

    The proteasome biogenesis regulator Rpn4 cooperates with the unfolded protein response to promote ER stress resistance

    Rolf M Schmidt et al.
    Endoplasmic reticulum stress in yeast activates not only the UPR but also Rpn4, promoting the clearance of misfolded proteins from the cytosol as part of a modular cross-compartment stress response.
    1. Immunology and Inflammation
    2. Physics of Living Systems

    Light-based tuning of ligand half-life supports kinetic proofreading model of T cell signaling

    Doug K Tischer, Orion David Weiner
    Direct control of ligand binding half-life with light shows that lifetime strongly affects T cell signaling.
    1. Cell Biology
    2. Computational and Systems Biology

    Perturbation biology nominates upstream–downstream drug combinations in RAF inhibitor resistant melanoma cells

    Anil Korkut et al.
    Data-driven systems biology models of signaling predict cellular response to untested perturbations and can nominate drug combinations to overcome drug resistance in cancer cells.
    1. Ecology
    2. Evolutionary Biology

    Tooth fracture frequency in gray wolves reflects prey availability

    Blaire Van Valkenburgh et al.
    Despite risks of infection and reduced fitness, tooth fracture frequency in gray wolves increases rapidly when prey are scarce because they must consume carcasses more completely.

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