國家衛生研究院 NHRI:Item 3990099045/11535
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/11535


    Title: PKCepsilon phosphorylation regulates the mitochondrial translocation of ATF2 in ischemia-induced neurodegeneration
    Other Titles: PKCε phosphorylation regulates the mitochondrial translocation of ATF2 in ischemia-induced neurodegeneration
    Authors: Kumar, V;Weng, YC;Wu, YC;Huang, YT;Chou, WH
    Contributors: Center for Neuropsychiatric Research
    Abstract: BACKGROUND: Global cerebral ischemia triggers neurodegeneration in the hippocampal CA1 region, but the mechanism of neuronal death remains elusive. The epsilon isoform of protein kinase C (PKCepsilon) has recently been identified as a master switch that controls the nucleocytoplasmic trafficking of ATF2 and the survival of melanoma cells. It is of interest to assess the role of PKCepsilon-ATF2 signaling in neurodegeneration. RESULTS: Phosphorylation of ATF2 at Thr-52 was reduced in the hippocampus of PKCepsilon null mice, suggesting that ATF2 is a phosphorylation substrate of PKCepsilon. PKCepsilon protein concentrations were significantly reduced 4, 24, 48 and 72 h after transient global cerebral ischemia, resulting in translocation of nuclear ATF2 to the mitochondria. Degenerating neurons staining positively with Fluoro-Jade C exhibited cytoplasmic ATF2. CONCLUSIONS: Our results support the hypothesis that PKCepsilon regulates phosphorylation and nuclear sequestration of ATF2 in hippocampal neurons during ischemia-induced neurodegeneration.
    Date: 2018-11-29
    Relation: BMC Neuroscience. 2018 Nov 29;19:Article number 76.
    Link to: http://dx.doi.org/10.1186/s12868-018-0479-z
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1471-2202&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000451702800001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85057483421
    Appears in Collections:[Wen-Hai Chou] Periodical Articles

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