Oussaief Lassad, Hippocrate Aurélie, Ramirez Vanessa, Rampanou Aurore, Zhang Wei, Meyers David, Cole Philip, Khelifa Ridha, Joab Irène
UMR542 INSERM-Université Paris 11, Hôpital Paul Brousse, 94807 Villejuif Cedex, France.
J Biol Chem. 2009 Sep 4;284(36):23912-24. doi: 10.1074/jbc.M109.036483. Epub 2009 Jul 9.
Epstein-Barr virus, a ubiquitous human herpesvirus, is associated with the development of carcinomas and lymphomas. We previously showed that transforming growth factor beta1 (TGF-beta1) mediated the virus to enter the lytic cycle, which is triggered by expression of Z Epstein-Barr virus replication activator (ZEBRA), through the ERK 1/2 MAPK signaling pathway. We report here that Akt, activated downstream from ERK 1/2, was required for TGF-beta1-induced ZEBRA expression and enabled Smad3, a mediator of TGF-beta1 signaling, to be acetylated by direct interaction with the co-activator CREB-binding protein and then to regulate TGF-beta1-induced ZEBRA expression.
爱泼斯坦-巴尔病毒是一种普遍存在的人类疱疹病毒,与癌和淋巴瘤的发生有关。我们之前表明,转化生长因子β1(TGF-β1)通过ERK 1/2丝裂原活化蛋白激酶信号通路介导病毒进入裂解周期,该周期由Z爱泼斯坦-巴尔病毒复制激活因子(ZEBRA)的表达触发。我们在此报告,ERK 1/2下游被激活的Akt是TGF-β1诱导ZEBRA表达所必需的,并且使TGF-β1信号传导的介质Smad3通过与共激活因子CREB结合蛋白直接相互作用而被乙酰化,进而调节TGF-β1诱导的ZEBRA表达。