PMID: 16640928Apr 28, 2006Paper

The biological changes of NIH3T3 cells co-cultured with human bone morphogenetic protein-2 gene transfecting cells

Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology
Juan WangGui-xia Tang

Abstract

To investigate the ultrastructure and the alkaline phosphatase (ALP) activity changes of NIH3T3 cells incubated with secretive human bone morphogenetic protein-2 (hBMP-2) that is induced by gene transfection through transwell system. Eukaryotic expression vector (pcDNA3.1-B2) was transduced into NIH3T3 cells by Sofast, a positive compound transfection agent. The positive cell clones were selected with G418. The cytoplasmic and extracellular expression of BMP-2 in the NIH3T3 cells were determined by immunohistochemical and enzyme-linked immunosorbent assay (ELISA). NIH3T3 cells were co-cultured with hBMP-2 gene transfecting cells through transwell system, and the ultrastructure and ALP activity (the markers of osteogenetic differentiation) changes were observed. There were cytoplasmic and extracellular expression of BMP-2 in transfecting NIH3T3 cells. The ultrastructure changes and the high expression of ALP suggested the osteogenetic differentiation tendency of NIH3T3 cells co-cultured with transfecting NIH3T3 cells. Secretive BMP-2 that is induced by gene transfection could promote the osteogenetic differentiation of fibroblast cells.

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