39 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Temporal profiling of redox-dependent heterogeneity in single cells

    Meytal Radzinski, Rosi Fassler ... Dana Reichmann
    Analysis of aging yeast cells using the in-vivo roGFP2-based probe reveals redox-dependent heterogeneity, reflected in a bi-modal distribution of the oxidation status, differential growth and replication, as well as distinct proteomic and transcriptomic profiles.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Neutrophil-generated HOCl leads to non-specific thiol oxidation in phagocytized bacteria

    Adriana Degrossoli, Alexandra Müller ... Lars I Leichert
    The use of genetically encoded redox sensors in phagocytized bacteria reveals that, among the toxic cocktail of oxidants released into the neutrophil's phagolysosome, HOCl is the main component responsible for the oxidative modification of bacterial protein thiols.
    1. Cell Biology

    Intact protein folding in the glutathione-depleted endoplasmic reticulum implicates alternative protein thiol reductants

    Satoshi Tsunoda, Edward Avezov ... David Ron
    Adapting a cytosolic enzyme that breaks down glutathione to function in the lumen of the endoplasmic reticulum challenges the long-held view that reduced glutathione fuels disulfide rearrangements during protein folding.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A tryparedoxin-coupled biosensor reveals a mitochondrial trypanothione metabolism in trypanosomes

    Samantha Ebersoll, Marta Bogacz ... R Luise Krauth-Siegel
    African trypanosomes have a trypanothione-based mitochondrial thiol redox metabolism.
    1. Neuroscience

    Low doses of the organic insecticide spinosad trigger lysosomal defects, elevated ROS, lipid dysregulation, and neurodegeneration in flies

    Felipe Martelli, Natalia H Hernandes ... Hugo J Bellen
    The organic insecticide spinosad severely impacts metabolism, the cell biology, and the visual system of the model insect Drosophila, suggesting that it poses a threat to other non-pest insect exposed to it in the field.
    1. Ecology
    2. Microbiology and Infectious Disease

    Light-dependent single-cell heterogeneity in the chloroplast redox state regulates cell fate in a marine diatom

    Avia Mizrachi, Shiri Graff van Creveld ... Assaf Vardi
    Single-cell analysis of the chloroplast redox response to high light and oxidative stress revealed light-dependent heterogeneity, and was linked to cell fate determination within isogenic diatom populations.
    1. Cell Biology

    DNA damage induces nuclear actin filament assembly by Formin-2 and Spire-1/2 that promotes efficient DNA repair

    Brittany J Belin, Terri Lee, R Dyche Mullins
    An efficient response to DNA damage requires the assembly of actin filaments in the nucleus.
    1. Microbiology and Infectious Disease

    Biosensor-integrated transposon mutagenesis reveals rv0158 as a coordinator of redox homeostasis in Mycobacterium tuberculosis

    Somnath Shee, Reshma T Veetil ... Amit Singh
    Genome-scale integration of transposon mutagenesis with a redox biosensor identified a hypothetical transcription factor- Rv0158 required to calibrate the growth, cytoplasmic redox potential, and respiration of Mycobacterium tuberculosis in response to metabolic switching from glucose to fatty acids.
    1. Neuroscience

    Early dysfunction and progressive degeneration of the subthalamic nucleus in mouse models of Huntington's disease

    Jeremy F Atherton, Eileen L McIver ... Mark D Bevan
    In mouse models of Huntington's disease, the subthalamic nucleus, which suppresses movements, also exhibits impaired glutamate homeostasis, NMDA receptor-dependent mitochondrial oxidant stress, firing disruption, and 30% neuronal loss.
    1. Cell Biology
    2. Neuroscience

    Activity-dependent mitochondrial ROS signaling regulates recruitment of glutamate receptors to synapses

    Rachel L Doser, Kaz M Knight ... Frederic J Hoerndli
    In response to neuronal activity in vivo, mitochondria in dendrites of excitatory neurons inhibit recruitment of ionotropic glutamate receptors through a reactive oxygen signaling mechanism.

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