[Co-expression of human bone morphogenetic protein-2 and osteoprotegerin in myoblast C2C12]

Ji-zhong Liu, Yun-yu Hu, Zong-ling Ji
Chinese Journal of Reparative and Reconstructive Surgery 2003, 17 (1): 1-4

OBJECTIVE: To construct a co-expressing vector of human bone morphogenetic protein 2 (BMP-2) and osteoprotegerin (OPG) and to determine the expression of BMP-2 and OPG in myoblast C2C12.

METHODS: Using the isolated total RNA from osteosacoma cell line MG63 as a template, the cDNA encoding region of human OPG was amplified by reverse transcription-polymerase chain reaction (RT-PCT) method and cloned into sites EcoR 1 and BamH I of mammalian expressing vector pIRES2-EGFP, and the cDNA encoding region of human BMP-2 was cloned into endonucleases site BstX I. Then the recombinant plasmid pIRES2-BMP-2-OPG was transformed into C2C12 cell line, the expression of OPG and BMP-2 were determined by Western blot assay.

RESULTS: The sequence of OPG cDNA obtained was the same as that reported, recombinant plasmid pIRES2-BMP-2-OPG was constructed successfully. Human OPG and BMP-2 co-expression cell line C2C12 was selected and confirmed by Western blot analysis.

CONCLUSION: The co-expressing vector of OPG and BMP-2 is constructed and can expressed stably in myoblast C2C12. The co-expression of human OPG and BMP-2 may be logical approach for treatment of osteoporosis and bone metastasis.

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