PMID- 24501901 OWN - NLM STAT- MEDLINE DCOM- 20140702 LR - 20181202 IS - 1002-1892 (Print) IS - 1002-1892 (Linking) VI - 27 IP - 11 DP - 2013 Nov TI - [Osteodifferentiation of bone marrow mesenchymal stem cells after transfected by lentiviral vector mediated bone morphogenetic protein 2]. PG - 1380-5 AB - OBJECTIVE: To construct recombinant lentiviral vectors of porcine bone morphogenetic protein 2 (BMP-2) gene and to detect BMP-2 gene activity and bone marrow mesenchymal stem cells (BMSCs) osteogenetic differentiation so as to lay a foundation of the further study of osteochondral tissue engineering. METHODS: BMSCs were isolated from bone marrow of 2-month-old Bama miniature porcines (weighing, 15 kg), and the 2nd generation of BMSCs were harvested for experiments. The porcine BMP-2 gene lentiviral vector was constructed by recombinant DNA technology and was used to transfect BMSCs at multiplicity of infection (MOI) of 10, 25, 50, 100, and 200, then the optimal value of MOI was determined by fluorescent microscope and inverted phase contrast microscope. BMSCs transfected by BMP-2 recombinant lentiviral vectors served as experimental group (BMP-2 vector group); BMSCs transfected by empty vector (empty vector group), and non-transfected BMSCs (non-transfection group) were used as control groups. RT-PCR, immunohistochemistry staining, and Western blot were performed to detect the expressions of BMP-2 mRNA and protein. Then the BMSCs osteogenesis was detected by alkaline phosphatase (ALP) staining, ALP activities, and Alizarin red staining. RESULTS: The recombinant lentiviral vectors of porcine BMP-2 gene was successfully constructed and identified by RT-PCR and gene sequencing, and BMSCs were successfully transfected by BMP-2 recombinant lentiviral vectors. Green fluorescent protein could be seen in the transfected BMSCs, especially at MOI of 100 with best expression. The immunohistochemistry staining and Western blot showed that BMSCs transfected by BMP-2 recombinant lentiviral vectors could express BMP-2 protein continuously and stably at a high level. After cultivation of 2 weeks, the expression of ALP and the form of calcium nodules were observed. CONCLUSION: The porcine BMP-2 gene lentiviral vector is successfully constructed and transfected into the BMSCs, which can express BMP-2 gene and protein continuously and stably at a high level and induce BMSCs differentiation into osteoblasts. FAU - Xu, Shenggui AU - Xu S AD - Department of Orthopedics, Mindong Hospital Affiliated to Fujian Medical University, Ningde Fujian, 355000, P.R.China. FAU - Lin, Jianhua AU - Lin J AD - Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University. FAU - Liu, Weinan AU - Liu W AD - Department of Orthopedics, the Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine. FAU - Wu, Chaoyang AU - Wu C AD - Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University. LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi JT - Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery JID - 9425194 RN - 0 (Bone Morphogenetic Protein 2) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) RN - 0 (Transforming Growth Factor beta) RN - 0 (recombinant human bone morphogenetic protein-2) RN - EC 3.1.3.1 (Alkaline Phosphatase) SB - IM MH - Adenoviridae/*genetics MH - Alkaline Phosphatase/metabolism MH - Animals MH - Bone Marrow Cells/cytology/metabolism MH - Bone Morphogenetic Protein 2/*genetics/metabolism MH - *Cell Differentiation MH - Cell Proliferation MH - Cells, Cultured MH - Female MH - Gene Expression MH - Genetic Therapy MH - Genetic Vectors/*genetics MH - Male MH - Mesenchymal Stem Cells/*cytology/metabolism MH - *Osteogenesis MH - RNA, Messenger/genetics/metabolism MH - Recombinant Proteins/genetics/metabolism MH - Swine MH - Tissue Engineering/methods MH - Transfection MH - Transforming Growth Factor beta/*genetics/metabolism EDAT- 2014/02/08 06:00 MHDA- 2014/07/06 06:00 CRDT- 2014/02/08 06:00 PHST- 2014/02/08 06:00 [entrez] PHST- 2014/02/08 06:00 [pubmed] PHST- 2014/07/06 06:00 [medline] PST - ppublish SO - Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2013 Nov;27(11):1380-5.