609 results found
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Y-box protein 1 is required to sort microRNAs into exosomes in cells and in a cell-free reaction

    Matthew J Shurtleff et al.
    A cell-free reaction that reconstitutes the selective sorting of a miRNA into exosomes reveals an RNA-binding protein, YBX1, as a critical sorting factor.
    1. Cell Biology

    Recruitment dynamics of ESCRT-III and Vps4 to endosomes and implications for reverse membrane budding

    Manuel Alonso Y Adell et al.
    Quantitative 3D lattice light sheet microscopy of unperturbed cells combined with electron tomography and acute loss of function experiments reveals how dynamic ESCRT-III/Vps4 assemblies succeed in reverse membrane budding on endosomes.
    1. Microbiology and Infectious Disease

    Exosomes mediate horizontal transmission of viral pathogens from insect vectors to plant phloem

    Qian Chen et al.
    An important rice reovirus hijacks exosomes to traverse the apical plasmalemma into saliva-stored cavities in the salivary glands of insect vectors, facilitating viral horizontal transmission into rice phloem.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct and evolutionary conserved structural features of the human nuclear exosome complex

    Piotr Gerlach et al.
    Cryo-EM structure and biochemical characterization of the human nuclear exosome reveals its specific properties with respect to the yeast complex, underscoring the evolutionary conservation of the RNA-channeling mechanisms and hMTR4 helicase recruitment.
    1. Microbiology and Infectious Disease

    The host exosome pathway underpins biogenesis of the human cytomegalovirus virion

    Declan L Turner et al.
    The HCMV virion envelope is derived from the host exosome membrane, and exosome machinery and export pathways facilitate virion egress.
    1. Cell Biology

    Tetherin is an exosomal tether

    James R Edgar et al.
    Blocking acidification causes endosomes to fuse with the plasma membrane, releasing exosomes that remain attached to the cell surface via the anti-viral protein tetherin.
    1. Cancer Biology

    FGF2-FGFR1 signaling regulates release of Leukemia-Protective exosomes from bone marrow stromal cells

    Nathalie Javidi-Sharifi et al.
    Inhibition of FGF2-FGFR1 signaling in bone marrow stroma attenuates secretion of FGF2-laden exosomes and subsequent protection of leukemia cells.
    1. Cell Biology
    2. Cancer Biology

    Tumor microenvironment derived exosomes pleiotropically modulate cancer cell metabolism

    Hongyun Zhao et al.
    Exosomes from cancer-associated fibroblasts enhance the "Warburg effect" in tumors and contain de novo metabolites that can contribute to the entire compendia of central carbon metabolism within cancer cells.
    1. Biochemistry and Chemical Biology

    Structure and reconstitution of yeast Mpp6-nuclear exosome complexes reveals that Mpp6 stimulates RNA decay and recruits the Mtr4 helicase

    Elizabeth V Wasmuth et al.
    The nuclear exosome cofactors Mpp6 and Rrp47 can stimulate exoribonuclease activities of the nuclear RNA exosome and recruit the Mtr4 helicase to promote helicase dependent RNA decay.
    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.

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