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BMP2诱导C3H10细胞成骨分化的TGFβ-Ⅰ型受体的体外分析

作  者:
张燕;翁亚光;文巍;冯涛;罗进勇
单  位:
重庆医科大学检验医学教育部重点实验室重庆市重点实验室
关键词:
骨形态发生蛋白;TGF-β受体;间充质干细胞;信号转导;RNA干扰
摘  要:
筛选和分析与BMP2诱导间充质干细胞C3H10成骨分化有关的TGF-βⅠ型受体。利用显性负性突变型TGF-βⅠ型受体竞争抑制配体功能的特性,运用碱性磷酸酶定量测定、Real time PCR等方法,初步筛选出可能与BMP2诱导间充质干细胞C3H10成骨分化有关的的TGF-βⅠ型受体,随后运用RNA干扰的方法抑制相应TGF-βⅠ型受体的表达,进一步证实相关TGF-βⅠ型受体与BMP2发挥诱导成骨活性的关系。结果证实,显性负性突变的ALK3和ALK6能够抑制BMP2诱导的C3H10细胞成骨分化;RNA干扰抑制ALK3或(和)ALK6表达后,BMP2诱导C3H10细胞向成骨分化的趋势受到抑制。因此,ALK3和ALK6是与BMP2诱导C3H10细胞成骨分化有关的TGF-βⅠ型受体。
译  名:
Analyses of TypeⅠTGF-β Receptors in BMP2 Induced Osteogenic Differentiation of C3H10 Cell in Vitro
作  者:
Zhang Yan Weng Yaguang Wen Wei Feng Tao Luo Jinyong (Key Laboratory of Medical Diagnostics,Ministry of Education,Chongqing Medical University,Chongqing 400016)
关键词:
Bone morphogenetic proteins TGF-β receptor Meshenchymal stem cells Signal transudation RNA interference
摘  要:
It was to analysis the typeⅠ TGF-β receptors in BMP2 induced osteogenic differentiation.The typeⅠ TGF-β receptors involved in BMP2 induced osteogenic differentiation of C3H10 cell was identified by using ALP quantitative assay and Real time PCR.The expression of BMP2 related typeⅠ TGF-β receptors was knock down by RNA interference,to confirm the relationship between osteogenic activity of BMP2 and typeⅠ TGF-β receptors.Results showed that dominant negative forms of ALK3 and ALK6 can inhibit BMP2 induced osteogenic differentiation of C3H10 cell,and ALK3/ALK6 knock-down by RNAi can inhibit BMP2 induced osteogenic differentiation of C3H10 cell.It can prove that ALK3 and ALK6 are the typeⅠ TGF-β receptors that can involve in BMP2 induced osteogenic differentiation of C3H10 cell.

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