Effects of rhBMP_2/ TGF-? on heterotopic osteogenesis of autogenous marrow stromal cells and ?-tricalcium phosphate scaffold
- VernacularTitle:rhBMP_2／TGF-?对?-磷酸三钙与骨髓基质细胞自体皮下成骨能力的影响
- Author:
Wei SUN
;
Zhanxin WANG
;
Jinsong GAO
- Publication Type:Journal Article
- Keywords:
?-tricalcium phosphate;
marrow stromal cells;
tissue engineering hone;
osteogenesis
- From:
Journal of Jilin University(Medicine Edition)
2006;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe heterotopic osteogenesis of autogenous marrow stromal cells on ?-tricalcium phosphate (?-TCP) scaffold, and the effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) and transforming growth factor-beta (TGF-?) on osteogenesis. Methods The Newzealand rabbits autogenous marrow stromal cells were cultured by mineralized condition medium. The cell suspension was collected. All the cells with concentration of 5 ?106 ? mL-1 were divided into four groups. Group A: rhBMP-2 (15 ?g) /TGF-? (30 ng) were added; group B: TGF-? 30 ng was administered; group C: without growth factor as control; group D: continual cultured and no loading on ?-TCP. MSCs in group A, B, C were planted on ?-TCP. Alkaline phosphatase (ALP) activity was examined by histochemistry. Then MSCs loading on ?-TCP were embedded in autogenous subcutaneous. Four weeks later, the osteogenesis was observed by HE staining, type I collagen and bone morphogenetic protein synthesis were examined by immunohistochemistry stains. Results The ALP activities in groups A and B were significantly higher than those in group C and D (P
