國家衛生研究院 NHRI:Item 3990099045/2175
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    题名: MST4, a new Ste20-related kinase that mediates cell growth and transformation via modulating ERK pathway
    作者: Lin, JL;Chen, HC;Fang, HI;Robinson, D;Kung, HJ;Shih, HM
    贡献者: Division of Molecular and Genomic Medicine
    摘要: In this study, we report the cloning and characterization of a novel human Ste20-related kinase that we designated MST4 (accession number AF231012). The 416 amino acid full-length MST4 contains an aminoterminal kinase domain, which is highly homologous to MST3 and SOK, and a unique carboxy-terminal domain. Northern blot analysis indicated that MST4 is highly expressed in placenta, thymus, and peripheral blood leukocytes. Wild-type but not kinase-dead MST4 can phosphorylate myelin basic protein in an in vitro kinase assay. MST4 specifically activates ERK but not JNK or p38 MAPK in transient transfected cells or in stable cell lines. Overexpression of dominant negative MEK1 or treatment with PD98059 abolishes MST4-induced ERK activity, whereas dominant-negative Ras or c-Raf-1 mutants failed to do so, indicating MST4 activates MEK1/ERK via a Ras/Raf-1 independent pathway. HeLa and Phoenix cell lines overexpressing wild-type, but not kinase-dead, MST4 exhibit increased growth rate and form aggressive soft-agar colonies. These phenotypes can be inhibited by PD98059. These results provide the first evidence that MST4 is biologically active in the activation of MEK/ERK pathway and in mediating cell growth and transformation.
    关键词: Biochemistry & Molecular Biology;Oncology;Cell Biology;Genetics & Heredity
    日期: 2001-10-04
    關聯: Oncogene. 2001 Oct;20(45):6559-6569.
    Link to: http://dx.doi.org/10.1038/sj.onc.1204818
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0950-9232&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000171404200009
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0035807216
    显示于类别:[施修明] 期刊論文
    [陳華鍵(1997-2001)] 期刊論文

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