370 results found
  1. February 2014

    Episode 9: February 2014

    In this episode we learn more about sleep, super Spy chaperones, swimming bacteria, orphan genes and the neuroscience of birdsong.
    1. Developmental Biology

    Antagonistic regulation by insulin-like peptide and activin ensures the elaboration of appropriate dendritic field sizes of amacrine neurons

    Jiangnan Luo et al.
    Afferent-derived factors control the elaboration of appropriate and robust sizes of dendritic arbors by dynamically modulating dendritic growth parameters.
    1. Cancer Biology

    Mice deficient of Myc super-enhancer region reveal differential control mechanism between normal and pathological growth

    Kashyap Dave et al.
    A tumor-specific regulatory region has been identified upstream of the Myc oncogene.
    1. Neuroscience

    Chronic lithium treatment elicits its antimanic effects via BDNF-TrkB dependent synaptic downscaling

    Erinn S Gideons et al.
    The antimanic action of lithium requires BDNF-TrkB signaling coupled with enhanced dynamin-dependent endocytosis of AMPARs as a potential mechanism underlying the therapeutic effects.
    1. Neuroscience

    Dopamine receptor 1 neurons in the dorsal striatum regulate food anticipatory circadian activity rhythms in mice

    Christian M Gallardo et al.
    For mice, knowing when it is time to feed is dependent on the neurotransmitter dopamine and the D1R receptor of neurons in the dorsal striatum.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Controlling gene activation by enhancers through a drug-inducible topological insulator

    Taro Tsujimura et al.
    A novel synthetic DNA cassette of CTCF-binding sites combined with the drug-controllable induction system of heterochromatin enabled switchable blocking of chromatin conformation and gene-enhancer interaction.
    1. Structural Biology and Molecular Biophysics

    Multivalency regulates activity in an intrinsically disordered transcription factor

    Sarah Clark et al.
    Binding of multiple LC8 copies to the intrinsically disordered region of the transcription factor ASCIZ exemplifies a new and potentially widespread molecular mechanism for negative feedback regulation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Tuning site-specific dynamics to drive allosteric activation in a pneumococcal zinc uptake regulator

    Daiana A Capdevila et al.
    Internal dynamics play a crucial functional role in MarR (multiple antibiotic resistance repressor) proteins and their role reconciles the distinct allosteric mechanisms proposed previously.
    1. Cancer Biology
    2. Cell Biology

    Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells

    Michiel van Veen et al.
    GDE3 is a transmembrane GPI-specific phospholipase C that sheds the urokinase receptor (uPAR) from the cell surface resulting in loss of uPAR function in breast cancer cells and reduced tumor growth.
    1. Ecology

    Cyclic bouts of extreme bradycardia counteract the high metabolism of frugivorous bats

    M Teague O'Mara et al.
    Novel heart rate strategies that minimize energy expenditure during the day are necessary to cope with high energy nocturnal lifestyles of tent-making bats.

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