738 results found
    1. Cell Biology
    2. Developmental Biology

    Developmentally regulated H2Av buffering via dynamic sequestration to lipid droplets in Drosophila embryos

    Matthew Richard Johnson et al.
    In early Drosophila embryos, histone H2Av continuously exchanges between cytoplasmic lipid droplets, a process that modulates H2Av import into nuclei and constitutes a novel post-translational strategy to regulate nuclear H2Av levels.
    1. Chromosomes and Gene Expression
    2. Stem Cells and Regenerative Medicine

    Decoupling the impact of microRNAs on translational repression versus RNA degradation in embryonic stem cells

    Jacob W Freimer et al.
    The deletion of Ddx6 results in the translational upregulation, but not transcript stabilization, of microRNA targets in embryonic stem cells while largely phenocopying the overall impact of global microRNA loss.
    1. Developmental Biology

    Release and spread of Wingless is required to pattern the proximo-distal axis of Drosophila renal tubules

    Robin Beaven, Barry Denholm
    In contrast to growing evidence that juxtracrine signalling accounts for Wnt/Wingless patterning function, Wingless behaves as a released signal in Drosophila renal tubule development, being secreted from the midgut to spread and pattern the proximal tubule.
    1. Cell Biology

    Cortical dynein pulling mechanism is regulated by differentially targeted attachment molecule Num1

    Safia Omer et al.
    Dynein-dependent microtubule-cortex interactions – "side-on" versus "end-on" pulling – are regulated by cortical ER and mediated by distinct pools of cortical anchor that are differentially localized along the cell periphery.
    1. Human Biology and Medicine
    2. Neuroscience

    Regenerating hair cells in vestibular sensory epithelia from humans

    Ruth Rebecca Taylor et al.
    Immunolabelling and morphological assessment, complemented by complete transcriptomic analysis, demonstrates that supporting cells can be induced to convert towards a hair cell-like phenotype in human vestibular sensory epithelia.
    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. Developmental Biology
    2. Evolutionary Biology

    Wnt/β-catenin regulates an ancient signaling network during zebrafish scale development

    Andrew J Aman et al.
    Zebrafish scales depend on interactions among Wnt, Ectodysplasin and Hedgehog signaling pathways similar to those underlying feathers, teeth and hair follicles, suggesting a deep homology of ectodermal appendages in vertebrates.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Loss of Fam60a, a Sin3a subunit, results in embryonic lethality and is associated with aberrant methylation at a subset of gene promoters

    Ryo Nabeshima et al.
    Fam60a, a component of the Sin3a complex, is required for embryonic development and regulates methylation at a subset of gene promoters.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    JNK signaling triggers spermatogonial dedifferentiation during chronic stress to maintain the germline stem cell pool in the Drosophila testis

    Salvador C Herrera, Erika A Bach
    JNK pathway activity induces spermatogonial dedifferentiation under challenging conditions to maintain the germline stem cell pool and to endow it with potentially fitter cells that have increased proliferation.
    1. Neuroscience

    Pre-post synaptic alignment through neuroligin-1 tunes synaptic transmission efficiency

    Kalina T Haas et al.
    Neuroligin 1 is a critical adhesion molecule which organizes AMPA receptor nanodomains in close vicinity to pre-synaptic release sites, and whose genetic or chemical disruption severely impairs synaptic transmission properties.

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