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    National Tsing Hua University Institutional Repository > 生命科學院  > 生命科學系 > 期刊論文 >  SH2B1 beta enhances fibroblast growth factor 1 (FGF1)-induced neurite outgrowth through MEK-ERK1/2-STAT3-Egr1 pathway


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81449


    Title: SH2B1 beta enhances fibroblast growth factor 1 (FGF1)-induced neurite outgrowth through MEK-ERK1/2-STAT3-Egr1 pathway
    Authors: Wei-Fan Lin;Chien-Jen Chen;Yu-Jung Chang;Su-Liang Chen;Ing-Ming Chiu;Linyi Chen
    教師: 陳令儀
    Date: 2009
    Publisher: Elsevier
    Relation: Cellular Signalling, Elsevier, Volume 21, Issue 7, JUL 2009, Pages 1060-1072
    Keywords: Fibroblast growth factor
    Growth factor signaling
    SH2B1
    Neurite outgrowth
    Abstract: Genetic studies have established the crucial roles of FGF signaling, FGF-induced gene expression and morphogenesis during embryogenesis. In this study, we showed that overexpressing a signaling adaptor protein, SH2B1β, enhanced FGF1-induced neurite outgrowth in PC12 cells. SH2B1β has previously been shown to promote nerve growth factor (NGF) and glial cell line-derived neurotrophic factor (GDNF)-induced neurite outgrowth, in part, through prolonging NGF and GDNF-induced signaling. To delineate how SH2B1β promotes FGF1-induced neurite outgrowth, we examined its role in FGF1-dependent signaling. Our data suggest that SH2B1β enhances and prolongs FGF1-induced MEK-ERK1/2 and PI3K-AKT pathways. We also provided the first evidence that FGF1 induces the phosphorylation of signal transducer and activator of transcription 3 (STAT3) at serine 727 [pSTAT3(S727)] in PC12 cells. SH2B1β enhances this phosphorylation and the expression of the immediate early gene, Egr1. Through inhibitor assays, we have further shown that MEK-ERK1/2 is required for FGF1-induced neurite outgrowth, pSTAT3(S727) and Egr1 expression. Moreover, inhibiting Rho kinase, ROCK, enhances FGF1-induced neurite outgrowth through pSTAT3(S727)-independent manner. Taken together, our results demonstrate, for the first time, that SH2B1β enhances FGF1-induced neurite outgrowth in PC12 cells mainly through MEK-ERK1/2-STAT3-Egr1 pathway.
    Relation Link: http://www.elsevier.com/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81449
    Appears in Collections:[生命科學系] 期刊論文
    [分子醫學研究所] 期刊論文
    [腦科學研究中心] 期刊論文

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