Effect of fibroblast growth factor receptors 1-dominant negative strategy on alkaline phosphatase activity of bone marrow stromal cells after osteogenic induction
10.3760/cma.j.issn.1671-7600.2016.06.013
- VernacularTitle:成纤维细胞生长因子1型受体-显性负性作用对骨髓基质干细胞成骨诱导培养后碱性磷酸酶活性的影响
- Author:
Xia LI
;
Wenmang XU
;
Hong JIAN
;
Yongqing XU
;
Fubing LI
- Publication Type:Journal Article
- Keywords:
Bone marrow cells;
Fibroblast growth factors;
Fibroblast growth factor receptor 1;
Dominant negative effect
- From:
Chinese Journal of Orthopaedic Trauma
2016;18(6):526-531
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of fibroblast growth factor receptors 1-dominant negative strategy (FGFR1-DN) on alkaline phosphatase (ALP) activity of bone marrow stromal stem cells (BMSCs) after osteogenic induction.Methods BMSCs were transfected with eukaryotic expression plasmid pcDNA 3.1 (+)-DN FGFR1 and pcDNA3.1 (+)-FGFR1.The experiment was conducted in 4 groups:FGFR1-DN transfection group,FGFR1 transfection group,pcDNA3.1(+) empty vector transfection group and non-transfection group.The ALP activity of BMSCs was detected in logarithmic growth phase after osteogenic culture.The qualitative detection of ALP activity was carried out immunohistochemically while the quantitative detection by cALP kit.The ALP activity was compared between the 4 groups at 7 and 14 days after osteogenic induction.Results Compared with 7 days,the ALP activity at 14 days was significantly increased in the 4 groups,and the increase in FGFR1-DN transfection group was significantly higher than in the other 3 groups (P ＜ 0.05).At both 7 and 14 days,the ALP activity in FGFR1-DN transfection group was the highest while that in FGFR1 transfection group was the lowest (P ＜ 0.05).Conclusions FGFR1-DN can promote the ALP activity of BMSCs during osteogenesis.This may provide an experimental basis for the joint application of local gene therapy and tissue engineering and for construction of tissue engineered bone with better biocompatibility.
