title: [Co-expression of human bone morphogenetic protein-2 and osteoprotegerin in myoblast C2C12].
abstract: 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an Shaanxi, P. R. China 710032.
authors.forename: Ji-zhong
authors.initials: JZ
authors.lastname: Liu
authors.forename: Yun-yu
authors.initials: YY
authors.lastname: Hu
authors.forename: Zong-ling
authors.initials: ZL
authors.lastname: Ji
mesh_terms: D000818:Animals; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins / Q000096:biosynthesis* / Q000235:genetics; D002454:Cell Differentiation; D002478:Cells, Cultured; D004926:Escherichia coli; D015870:Gene Expression; D005822:Genetic Vectors; D006023:Glycoproteins / Q000096:biosynthesis* / Q000235:genetics; D006801:Humans; D032446:Myoblasts / Q000166:cytology / Q000378:metabolism*; D053244:Osteoprotegerin; D018160:Receptors, Cytoplasmic and Nuclear / Q000096:biosynthesis* / Q000235:genetics; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins; D014162:Transfection; D016212:Transforming Growth Factor beta
chemical_list: C525718:BMP2 protein, human; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins; D006023:Glycoproteins; D053244:Osteoprotegerin; D018160:Receptors, Cytoplasmic and Nuclear; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins; C506030:TNFRSF11B protein, human; D016212:Transforming Growth Factor beta; C499469:recombinant human bone morphogenetic protein-2