203 results found
    1. Cell Biology

    Serotonin signaling by maternal neurons upon stress ensures progeny survival

    Srijit Das et al.
    Neuronal serotonin release tunes transcription response times of Caenorhabditis elegans germ cells to promote the survival and stress resistance of future offspring.
    1. Neuroscience

    Acetylcholine acts on songbird premotor circuitry to invigorate vocal output

    Paul I Jaffe, Michael S Brainard
    The neuromodulator acetylcholine contributes to state-dependent modulation of motor vigor and variability by direct action on songbird premotor cortex, bypassing basal ganglia circuitry.
    1. Neuroscience

    Spatiotemporally precise optogenetic activation of sensory neurons in freely walking Drosophila

    Brian D DeAngelis et al.
    A simple, computationally efficient method provides spatiotemporally precise optogenetic perturbations in freely walking Drosophila, revealing the asymmetries and region-specificity of behavioral programs evoked by activating mechanosensory and chemosensory neurons.
    1. Chromosomes and Gene Expression

    Telomere dysfunction cooperates with epigenetic alterations to impair murine embryonic stem cell fate commitment

    Mélanie Criqui et al.
    Cell lineage tracing and biochemical analysis of cell fate during murine stem cell differentiation demonstrates a specific cooperativity between perturbations in histone methylation and eroded telomeres that destabilize cell differentiation.
    1. Microbiology and Infectious Disease

    Mycobacterium tuberculosis exploits host ATM kinase for survival advantage through SecA2 secretome

    Savita Lochab et al.
    Mycobacterium tuberculosis (Mtb), effectors secreted through SecA2 pathway cause double strand breaks (DSBs) in the host DNA, which in turn activates ATM kinase to gain survival advantages, through Akt.
    1. Chromosomes and Gene Expression

    Monoubiquitination by the human Fanconi anemia core complex clamps FANCI:FANCD2 on DNA in filamentous arrays

    Winnie Tan et al.
    Biochemical reconstitution experiments uncover the ubiquitin-mediated function of a DNA repair protein, key to the understanding of Fanconi Anemia, a cancer-associated bone marrow failure syndrome.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of S-OPA1 reveal its interactions with membrane and changes upon nucleotide binding

    Danyang Zhang et al.
    GTP binding induces rearrangement of S-OPA1 assembly on membrane and thus triggers membrane remodeling with reduced curvature.
    1. Developmental Biology
    2. Neuroscience

    Application of optogenetic Amyloid-β distinguishes between metabolic and physical damages in neurodegeneration

    Chu Hsien Lim et al.
    An optogenetic approach has been developed to model Alzheimer's disease allowing light-induced Amyloid-β aggregation and tested in three model organisms, Drosophila, C. elegans and D. rerio.
    1. Biochemistry and Chemical Biology

    Agonist-mediated switching of ion selectivity in TPC2 differentially promotes lysosomal function

    Susanne Gerndt et al.
    The lysosomal ion channel TPC2 emerges as an example of an ion channel in which ion selectivity is not fixed but rather agonist-selective.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Eya2 promotes cell cycle progression by regulating DNA damage response during vertebrate limb regeneration

    Konstantinos Sousounis et al.
    Experimental manipulation of a core DNA damage response factor and cell-cycle checkpoint regulators reveals a key role for these processes in the progenitor cells that fuel limb regeneration.

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