671 results found
    1. Cancer Biology

    Horizontal transfer of whole mitochondria restores tumorigenic potential in mitochondrial DNA-deficient cancer cells

    Lan-Feng Dong et al.
    A genetic approach documents that mitochondrial DNA moves from donor cells to recipient mtDNA-depleted cells in whole mitochondria and that this restores mitochondrial respiration and the capacity of the cells to form tumours.
    1. Biochemistry and Chemical Biology

    Role of Nfu1 and Bol3 in iron-sulfur cluster transfer to mitochondrial clients

    Andrew Melber et al.
    Mitochondrial proteins Nfu1 and BolA3 mediate the transfer of preformed [4Fe-4S] clusters within the mitochondria to recipient proteins to shield clusters from oxidative damage during transfer.
    1. Cell Biology

    Stable transplantation of human mitochondrial DNA by high-throughput, pressurized isolated mitochondrial delivery

    Alexander J Sercel et al.
    Applied pressure enables efficient isolated mitochondrial transfer and stable mitochondrial DNA (mtDNA) transplantation into a range of mtDNA-depleted cell types to restore respiration.
    1. Cell Biology
    2. Developmental Biology

    Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice

    Nuno Costa-Borges et al.
    Maternal spindle transfer is a feasible approach to enhance embryonic developmental of compromised oocytes, which can represent a new strategy for patients with forms of infertility refractory to current treatments.
    1. Cell Biology
    2. Neuroscience

    Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

    Shaarika Sarasija et al.
    In C. elegans, presenilin functions, independent of its gamma-secretase proteolytic activity, to regulate mitochondrial metabolism by controlling ER-mitochondrial calcium transfer and, even in the absence of Abeta signaling, loss of this activity leads to neurodegeneration.
    1. Cancer Biology

    Mitochondrial genetic diversity, selection and recombination in a canine transmissible cancer

    Andrea Strakova et al.
    Genetics of a canine transmissible tumour show how the world’s oldest cancer “metastasised” through the global dog population – and captured, maintained and rearranged its mitochondrial DNA along the way.
    1. Cell Biology

    IRBIT controls apoptosis by interacting with the Bcl-2 homolog, Bcl2l10, and by promoting ER-mitochondria contact

    Benjamin Bonneau et al.
    IRBIT and the Bcl-2 homolog Bcl2l10 form a complex at the endoplasmic reticulum that controls Ca2+ signaling, however IRBIT turns into an apoptosis facilitator following stress and inhibits anti-apoptotic activity of Bcl2l10.
    1. Structural Biology and Molecular Biophysics

    Functional asymmetry and electron flow in the bovine respirasome

    Joana S Sousa et al.
    Cryo-EM structure of the mammalian respiratory supercomplex containing complexes I, III and IV shows a functional asymmetry of complex III, providing strong evidence for directed electron flow in the respirasome.
    1. Evolutionary Biology

    Microbial eukaryotes have adapted to hypoxia by horizontal acquisitions of a gene involved in rhodoquinone biosynthesis

    Courtney W Stairs et al.
    A number of microbial eukaryotes have adapted to low oxygen conditions by acquiring a gene that allows their mitochondrial electron transport chain to continue to function when oxygen is scarce.
    1. Cell Biology
    2. Developmental Biology

    Mitochondrial Ca2+ uptake by the voltage-dependent anion channel 2 regulates cardiac rhythmicity

    Hirohito Shimizu et al.
    Enhancing mitochondrial Ca2+ uptake effectively suppresses aberrant Ca2+ induced arrhythmogenic events in zebrafish, mouse and human cardiomyocytes, demonstrating a critical role for mitochondria in the regulation of cardiac rhythmicity.

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