[发明专利]ERK2结合多肽及其制备有效
申请号: | 200610116925.8 | 申请日: | 2006-10-08 |
公开(公告)号: | CN101157728A | 公开(公告)日: | 2008-04-09 |
发明(设计)人: | 陈正军;周文超 | 申请(专利权)人: | 中国科学院上海生命科学研究院 |
主分类号: | C07K19/00 | 分类号: | C07K19/00;C07K14/435;C12N15/12;C12N15/63;C12N1/21;C12P21/02 |
代理公司: | 上海光华专利事务所 | 代理人: | 余明伟;许亦琳 |
地址: | 200031*** | 国省代码: | 上海;31 |
权利要求书: | 查看更多 | 说明书: | 查看更多 |
摘要: | |||
搜索关键词: | erk2 结合 多肽 及其 制备 | ||
技术领域
本发明涉及一种多肽,尤其是涉及一种具备调节细胞增殖与分化功能的多肽及其制备。
背景技术
接头蛋白是一组分子调节因子,能募集不同的蛋白形成复合物,将上游信号分子的信息传递下去(Pawson T,et al.Signaling through scaffold,anchoring,and adaptor proteins.Science,19,2075-80,1997;Ravichandran KS,et al.Signaling via Shc family adapterproteins.Oncogene,20(44),6322-30,2001)。在信号转导复合物形成和完成其生物学功能的时候,接头蛋白常经历酪氨酸磷酸化、结构改变和亚细胞定位变化(Cheng Y,et al.ERKnegatively regulates the epidermal growth factor-mediated interaction of Gabl andthe phosphatidylinositol 3-kinase.J.Biol Chem,277,19382-19388,2002;GuriTzivion,et al.14-3-3 proteins:Active cofactors in cellular regulation byserine/threonine phosphorylation.J.Biol Chem,277,3061-3064,2002;Mary N.Teruel,et al.Translocation and reversible localization of signaling proteins:adynamic future for signal transduction.Cell,103,181-184,2000)。成纤维细胞生长因子受体FGFR是受体酪氨酸激酶家族成员,调节细胞对一系列有关于调节细胞增殖、迁移、分化和存活的胞内信号的反应(Joseph Schlessinger,et al.Cell signaling by receptortyrosine kinases.Cell,103,211-225,2000;Kyle A Furge,et al.Met receptor tyrosinekinase:enhanced signaling through adapter proteins.Oncogene,19,5582-5589,2000;D.Vaudry,et al.Signaling pathways for PC12 cell differentiation:making the rightconnections.Science,296,1648-1649,2002)。接头蛋白FRS2(FGFR底物2)被认为是FGFR信号转导的一个主要的下游介导因子。FRS2通过N端十四烷基化锚定在细胞膜上,通过PTB(Phosphorylated Tyrosine Binding domain)结构域结合于FGFR。FGF(Fibroblast GrowthFactor,成纤维细胞生长因子)刺激后,FRS2迅速地酪氨酸磷酸化,并产生至少6个功能性pY(磷酸化酪氨酸残基)结合位点,从而与蛋白酪氨酸磷酸酶Shp2以及接头蛋白Grb2形成复合物,Grb2又与Ras(Ras GTPase)通路激活因子Sos(Son of sevenless)结合。然后FRS2-Grb2-Sos复合物激活Ras/MAP kinase(Mitogen Activated Protein Kinase)信号级联通路(H.Kouhara,et al.A lipid-anchored Grb2-binding protein that links FGF-receptoractivation to the Ras/MAPK signaling pathway.Cell,89,693-702,1997;Y.R.Hadari,et al.Binding of Shp2 tyrosine phosphatase to FRS2 is essential for fibroblast growthfactor-induced PC12 cell differentiation.Mol.Cell.Biol,18,3966-3973,1998;S.H.Ong,et al.FRS2 proteins recruit intracellular signaling pathways by binding todiverse targets on fibroblast growth factor and nerve growth factor receptors.Mol.Cell.Biol,20,979-989,2000)。除激活Ras/MAPK信号通路外,FRS2酪氨酸磷酸化这一重要事件也被报道其通过形成FRS2-Grb2(Growth receptor bound protein 2)-Gab1(GRB2-associated binding protein 1)复合物而参与PI3(Phosphatidylinositol-3Kinases)激酶激活,并进一步激活PI3K-Akt(Akt,蛋白激酶B)信号通路。有证据表明FRS2诱导PI3激酶激活,从而导致细胞迁移(Ong SH,et al.Stimulation of phosphatidylinositol3-kinase by fibroblast growth factor receptors is mediated by coordinated recruitmentof multiple docking proteins.P.N.A.S,98(11),6074-6079,2001)。目前,FRS2被报道在FGFR(Fibroblast Growth Factor,成纤维细胞生长因子受体),NGFR(Nerve Growth FactorReceptor,神经生长因子受体),PDGFR(Platelet Derived Growth Factor Receptor,血小板衍生生长因子受体),EGFR(Epithelial Growth Factor Receptor,上皮细胞生长因子受体),BDNFR(Brain Derived Neurotrophic Factor Receptor,脑衍生神经营养因子受体)和VEGFR(Vascular Endothelial Growth Factor Receptor,血管内皮生长因子受体)信号转导通路中发挥作用(Y.R.Hadari,et al.Critical role for the docking-protein FRS2ain FGF receptor-mediated signal transduction pathways.P.N.A.S,98(15),8578-8583,200l;R.M.Melillo,et al.Docking protein FRS2 links the protein tyrosine kinaseRET and its oncogenic forms with the Mitogen-Activated Protein Kinase signalingcascade.Mol.Cell.Biol,21,4177-4187,2001;Yan KS,et al.FRS2 PTB domainconformation regulates interactions with divergent neurotrophic receptors.J BiolChem,277(19),17088-17094,2002;Stoletov KV,Fibroblast growth factor receptorsubstrate 2 participates in vascular endothelial growth factor-induced signaling.FASEB.J,16(10),1283-1285,2002)。
该专利技术资料仅供研究查看技术是否侵权等信息,商用须获得专利权人授权。该专利全部权利属于中国科学院上海生命科学研究院,未经中国科学院上海生命科学研究院许可,擅自商用是侵权行为。如果您想购买此专利、获得商业授权和技术合作,请联系【客服】
本文链接:http://www.vipzhuanli.com/pat/books/200610116925.8/2.html,转载请声明来源钻瓜专利网。