PMID- 19619194 OWN - NLM STAT- MEDLINE DCOM- 20100618 LR - 20220311 IS - 1601-0825 (Electronic) IS - 1354-523X (Linking) VI - 16 IP - 1 DP - 2010 Jan TI - Combination of beta-TCP and BMP-2 gene-modified bMSCs to heal critical size mandibular defects in rats. PG - 46-54 LID - 10.1111/j.1601-0825.2009.01602.x [doi] AB - OBJECTIVE: To investigate the effects of mandibular defects repaired by a tissue engineered bone complex with beta-tricalcium phosphate (beta-TCP) and bone morphogenic protein-2 (BMP-2) gene-modified bone marrow stromal cells (bMSCs). MATERIALS AND METHODS: bMSCs derived from Fisher 344 rats were cultured and transduced with adenovirus AdBMP-2, AdEGFP gene in vitro. Osteogenic differentiation of bMSCs was determined by alkaline phosphatase staining, von Kossa assay and reverse transcription-polymerase chain reaction. Gene transduced or untransduced bMSCs were seeded on beta-TCP scaffolds to repair mandibular full thickness defects with a diameter of 5 mm. Eight weeks post-operation, X-ray examination, micro-computerized tomography and histological and histomorphological analysis were used to evaluate the bone healing effects. RESULTS: Alkaline phosphatase staining and mineralized nodules formation were more pronounced in AdBMP-2 group 14 days after gene transduction when compared with that of AdEGFP or untransduced group. The mRNA expression of osteopontin and osteocalcin also significantly increased 9 days after AdBMP-2 gene transduction. Mandibular defects were successfully repaired with AdBMP-2-transduced bMSCs/beta-TCP constructs. The percentage of new bone formation in AdBMP-2 group was significantly higher than that of other control groups. CONCLUSIONS: Bone morphogenic protein-2 regional gene therapy together with beta-TCP scaffold could be used to promote mandibular repairing and bone regeneration. FAU - Zhao, J AU - Zhao J AD - Department of Oral and Maxillofacial Surgery, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 200011 Shanghai, China. FAU - Hu, J AU - Hu J FAU - Wang, S AU - Wang S FAU - Sun, X AU - Sun X FAU - Xia, L AU - Xia L FAU - Zhang, X AU - Zhang X FAU - Zhang, Z AU - Zhang Z FAU - Jiang, X AU - Jiang X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090708 PL - Denmark TA - Oral Dis JT - Oral diseases JID - 9508565 RN - 0 (Bone Morphogenetic Protein 2) RN - 0 (Calcium Phosphates) RN - 0 (Recombinant Proteins) RN - 0 (beta-tricalcium phosphate) RN - 104982-03-8 (Osteocalcin) RN - 106441-73-0 (Osteopontin) MH - Animals MH - *Bone Marrow Transplantation MH - Bone Morphogenetic Protein 2/genetics/*pharmacology MH - Bone Regeneration/*drug effects MH - Calcium Phosphates MH - Cells, Cultured MH - Genetic Therapy/*methods MH - Male MH - Mandible/surgery MH - Osteoblasts/metabolism MH - Osteocalcin/biosynthesis MH - Osteopontin/biosynthesis MH - Rats MH - Rats, Inbred F344 MH - Recombinant Proteins MH - Reverse Transcriptase Polymerase Chain Reaction MH - Stromal Cells/*transplantation MH - Tissue Scaffolds MH - Transduction, Genetic MH - X-Ray Microtomography EDAT- 2009/07/22 09:00 MHDA- 2010/06/19 06:00 CRDT- 2009/07/22 09:00 PHST- 2009/07/22 09:00 [entrez] PHST- 2009/07/22 09:00 [pubmed] PHST- 2010/06/19 06:00 [medline] AID - ODI1602 [pii] AID - 10.1111/j.1601-0825.2009.01602.x [doi] PST - ppublish SO - Oral Dis. 2010 Jan;16(1):46-54. doi: 10.1111/j.1601-0825.2009.01602.x. Epub 2009 Jul 8.