Osterix(Osx)是一种重要的调控成骨细胞分化的具有锌指结构的转录因子.骨形态发生蛋白2(bone morphogenetic protein 2,BMP 2)能够上调Osx的表达,但其分子机制并不清楚.采用实时定量RT-PCR方法检测到BMP2诱导成骨相关细胞C3H10T1/2,MC3T...Osterix(Osx)是一种重要的调控成骨细胞分化的具有锌指结构的转录因子.骨形态发生蛋白2(bone morphogenetic protein 2,BMP 2)能够上调Osx的表达,但其分子机制并不清楚.采用实时定量RT-PCR方法检测到BMP2诱导成骨相关细胞C3H10T1/2,MC3T3-E1,C2C12中Osx的转录水平显著上调,并且与成骨分化指标Col1a1,osteocalcin具有相似的表达动力学特征.而且,在C3H10T1/2细胞中过表达负显性(dominant negative,DN)Osx基因,能够有效抑制BMP2诱导的成骨分化.过表达BMP/Smad信号通路抑制蛋白Smad6,能够抑制Osx转录水平的上调.但是通过荧光素酶报告载体对Osx的启动子-1254^+85区域进行分析后未发现接受BMP通路调控的启动子区域.上述结果表明,BMP2能够通过Smad途径上调Osx的表达,并对成骨分化的过程具有十分重要的作用.展开更多
In this essay, stylistic features of titles of economic artides have been discussed about andsome types of techniques on Chinese-English translation have been offered.
文摘In this essay, stylistic features of titles of economic artides have been discussed about andsome types of techniques on Chinese-English translation have been offered.