391 results found
    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. 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. 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. Cell Biology
    2. Human Biology and Medicine

    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. Cancer Biology
    2. Human Biology and Medicine

    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. 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. Cancer Biology
    2. Cell Biology

    Human pancreatic cancer cell exosomes, but not human normal cell exosomes, act as an initiator in cell transformation

    Karoliina Stefanius et al.
    Exosomes secreted from pancreatic cancer cells can function as a classic initiator in the multi-step cellular transformation process.
    1. Cancer Biology

    Replication Study: Melanoma exosomes educate bone marrow progenitor cells toward a pro-metastatic phenotype through MET

    Jeewon Kim et al.
    Editors' Summary: This Replication Study has reproduced some parts of the original paper but other parts could not be interpreted.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The Chd1 chromatin remodeler shifts hexasomes unidirectionally

    Robert F Levendosky et al.
    Oriented hexasomes can be generated using the Widom 601 positioning sequence, which enables straightforward production of nucleosomes with asymmetrically modified H2A/H2B dimers.

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