Gene expression and tenocyte proliferation of nuclear factor-?B under the stimulation of basic fibroblast growth factor
- VernacularTitle:核因子-?B诱导激酶和I?B激酶在碱性成纤维细胞生长因子作用下基因表达及肌腱细胞增殖
- Author:
Yan XU
;
Jinbo TANG
- Publication Type:Journal Article
- Keywords:
Growth factor;
Gene expression;
Signal transduction;
Tenocytes
- From:
Chinese Journal of Trauma
1993;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of nuclear factor-?B (NF-?B), NF-?B-inducing kinase (NIK) and I-?B in basic fibroblast growth factor (bFGF) promoting gene expression and signal transduction of tenocyte NF-?B. Methods Tenocytes isolated from rabbits were divided into 3 groups with 8 dishes: no bFGF (Group A), 2 ng/ml bFGF (Group B) and 10 ng/ml bFGF (Group C). Cells in all dishes were cultured for 5 days. The effect of bFGF on tenocytes proliferation was examined by means of growth curve analysis. The mRNA was isolated after 5 days and the gene expressions of NIK,IKK? and IKK? induced by NF-?B investigated by reverse transcription-polymerase chain reaction (RT-PCR). Results The growth curve moved forward with the dosage increase of bFGF. Gene expressions of NF-?B,NIK, I?B kinase (IKK)? and IKK? were 0.4? 0.2 , 0.4 ? 0.1 , 0.3 ?0.1 and 0.2?0.1 respectively in the Group B and 1.8?0.5,1.0?0.3, 0.8 ? 0.2 and 1.5 ? 0.4 in the Group C. Gene expressions were all up-regulated in the Groups B and C posterior to adding of bFGF. Conclusions bFGF stimulates tenocyte proliferation and up-regulates gene expression of NF-?B,NIK,IKK? and IKK?, as indicates that the signal transduction of promoting tenocyte proliferation by bFGF may be through NF-?B pathway.
