237 results found
    1. Chromosomes and Gene Expression
    2. Cell Biology

    Aging, Geroscience and Longevity: A Special Issue

    Edited by Matt Kaeberlein et al.
    eLife is pleased to present a Special Issue to highlight recent advances in the mechanistic understanding of aging and interventions that extend longevity.
    1. Cell Biology

    Polo-like kinase acts as a molecular timer that safeguards the asymmetric fate of spindle microtubule-organizing centers

    Laura Matellán et al.
    Molecular and cell biology analyses reveal novel roles of Polo-like kinases in establishing non-random segregation patterns of spindle-associated microtubule-organizing centers during mitosis, a phenomenon linked with replicative cell aging.
    1. Neuroscience

    A circuit mechanism for decision-making biases and NMDA receptor hypofunction

    Sean Edward Cavanagh et al.
    Ketamine, an NMDA receptor antagonist and experimental model for schizophrenia, produces decision-making deficits in monkeys, which are predicted by a lowering of cortical excitation-inhibition balance in a spiking circuit model.
    1. Neuroscience

    Apolipoprotein M-bound sphingosine-1-phosphate regulates blood–brain barrier paracellular permeability and transcytosis

    Mette Mathiesen Janiurek et al.
    Shortage of blood-borne apolipoprotein-M–bound sphingosine-1-phosphate, which accompanies various brain disorders, causes paracellular leak and increase in transcytosis at the blood–brain barrier, which can be reversed, thus is of clinical relevance.
    1. Cell Biology

    The Mitotic Exit Network integrates temporal and spatial signals by distributing regulation across multiple components

    Ian Winsten Campbell et al.
    By distributing regulation to both the GTPase and downstream kinases, the Mitotic Exit Network creates a single signal from spatial and temporal inputs.
    1. Developmental Biology
    2. Neuroscience

    Synapse maintenance is impacted by ATAT-2 tubulin acetyltransferase activity and the RPM-1 signaling hub

    Melissa A Borgen et al.
    Genetic, developmental and pharmacological analysis in Caenorhabditis elegans demonstrate that ATAT-2 tubulin acetyltransferase activity regulates synapse maintenance by acting within the RPM-1 signaling network, but independent of the DLK-1 MAP3K.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    The MBD7 complex promotes expression of methylated transgenes without significantly altering their methylation status

    Dongming Li et al.
    The METHYL-CpG-BINDING DOMAIN 7 (MBD7) complex promotes the activation (rather than repression) of transgenes that undergo DNA methylation and it does so without significantly altering their methylation status, placing this complex downstream of DNA methylation.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    Cancer-associated TERT promoter mutations abrogate telomerase silencing

    Kunitoshi Chiba et al.
    TERT promoter mutations impair TERT silencing upon cellular differentiation and are sufficient to facilitate cellular immortalization without additional tumor selected changes, explaining why they are associated with a very specific tumor spectrum.
    1. Neuroscience

    CELF RNA binding proteins promote axon regeneration in C. elegans and mammals through alternative splicing of Syntaxins

    Lizhen Chen et al.
    Genetics and genomics approaches reveal a conserved post-transcriptional regulatory mechanism that promotes adult axon regeneration from worm to mammals.
    1. Chromosomes and Gene Expression
    2. Medicine

    A deleterious gene-by-environment interaction imposed by calcium channel blockers in Marfan syndrome

    Jefferson J Doyle et al.
    Calcium channel blockers accelerate aortic aneurysm and cause premature aortic rupture in a mouse model of Marfan syndrome through protein kinase C-mediated activation of extracellular signal-regulated kinase.

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