26 results found
    1. Neuroscience

    Ca2+ sensor synaptotagmin-1 mediates exocytosis in mammalian photoreceptors

    Justin J Grassmeyer et al.
    The vesicular Ca2+ sensor synaptotagmin-1 regulates both fast phasic and slow tonic glutamate release at ribbon synapses of rod and cone photoreceptor cells.
    1. Neuroscience

    The Na+/Ca2+, K+ exchanger NCKX4 is required for efficient cone-mediated vision

    Frans Vinberg et al.
    Molecular, genetic, and functional analysis is used to show that the olfactory Na+/Ca2+, K+ exchanger NCKX4 is expressed in cone photoreceptors and is critical for the wide operating range and high temporal resolution of cone-mediated vision.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Phospholipase D activity couples plasma membrane endocytosis with retromer dependent recycling

    Rajan Thakur et al.
    Phosphatidic acid regulates recycling of endocytosed plasma membrane vesicles in polarized cells through a retromer and Arf1 dependent process.
    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    The LIM protein complex establishes a retinal circuitry of visual adaptation by regulating Pax6 α-enhancer activity

    Yeha Kim et al.
    Regulation of Pax6 expression through the α-enhancer fine-tunes amacrine cell subtype number, and consequently, the visual output of the retina.
    1. Structural Biology and Molecular Biophysics

    Patient-specific mutations impair BESTROPHIN1’s essential role in mediating Ca2+-dependent Cl- currents in human RPE

    Yao Li et al.
    A multidisciplinary platform featured by patient-derived RPEs is established to study the disease-causing mechanisms of BEST1 mutations, and demonstrates gene-supplemented rescue of the mutation-caused deficiency in Ca2+-dependent Cl- current in human RPE.
    1. Neuroscience

    The β-alanine transporter BalaT is required for visual neurotransmission in Drosophila

    Yongchao Han et al.
    BalaT-dependent β-alanine trafficking pathway in retinal pigment cells is critical for maintaining synaptic transmission of photoreceptor neurons in Drosophila.
    1. Neuroscience

    Charcot-Marie-Tooth 2B mutations in rab7 cause dosage-dependent neurodegeneration due to partial loss of function

    Smita Cherry et al.
    Mutations that reduce the functioning of rab7 may underlie the degeneration of sensory and motor nerves in Charcot-Marie-Tooth 2B disease, which suggests increasing endolysosomal function as a therapy.
    1. Neuroscience

    The carcinine transporter CarT is required in Drosophila photoreceptor neurons to sustain histamine recycling

    Drew Stenesen et al.
    Fly vision depends on a member of the SLC22 transporter family for recycling the histamine neurotransmitter following its uptake by glia and its modification into the transport metabolite carcinine.
    1. Human Biology and Medicine
    2. Neuroscience

    Rai1 frees mice from the repression of active wake behaviors by light

    Shanaz Diessler et al.
    Halving dosage of the Smith-Magenis syndrome responsible gene Rai1 in the mouse greatly amplifies the direct, suppressing effects of light on active-wake behavior through increased activation of the ventral-subparaventricular zone.

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