國家衛生研究院 NHRI:Item 3990099045/8278
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/8278


    Title: Derlin-1 regulates mutant VCP-linked pathogenesis and endoplasmic reticulum stress-induced apoptosis
    Authors: Liang, CJ;Chang, YC;Chang, HC;Wang, CK;Hung, YC;Lin, YE;Chan, CC;Chen, CH;Chang, HY;Sang, TK
    Contributors: Institute of Molecular and Genomic Medicine
    Abstract: Mutations in VCP (Valosin-containing protein), an AAA ATPase critical for ER-associated degradation, are linked to IBMPFD (Inclusion body myopathy with Paget disease and frontotemporal dementia). Using a Drosophila IBMPFD model, we have identified the ER protein Derlin-1 as a modifier of pathogenic TER94 (the fly VCP homolog) mutants. Derlin-1 binds to TER94 directly, and this interaction is essential for Derlin-1 overexpression to suppress the pathogenic TER94-induced neurodegeneration. Derlin-1 overexpression reduces the elevated ATPase activity of pathogenic TER94, implying that IBMPFD is caused by ATPase hyper-activation. Under physiological condition, Derlin-1 expression is increased upon ER stress to recruit TER94 to the ER. However, in response to severe ER stress, Derlin-1 is required for activating apoptosis to eliminate damaged cells. This pro-apoptotic response is mimicked by Derlin-1 overexpression, which elicits acute ER stress and triggers apoptosis via a novel C-terminal motif (alpha). As this Derlin-1-dependent cell death is negated by TER94 overexpression, we propose that while Derlin-1 and VCP work cooperatively in ER stress response, their imbalance has a role in removing cells suffering prolonged ER stress.
    Date: 2014-09-25
    Relation: PLoS Genetics. 2014 Sep 25;10(9):Article number e1004675.
    Link to: http://dx.doi.org/10.1371/journal.pgen.1004675
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1553-7404&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000343009600063
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84907587245
    Appears in Collections:[Chun-Hong Chen] Periodical Articles

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