Hong-Xiao Liu1, Nan Jiang2, Hui-Ying Liang2, Ying-Yan Zhou2, Xing-Hua Feng2, Xiao-Yan Feng3, He-Qiu Zhang3, Zhi-Kui Wu2, Quan Jiang2, Jiao Fu2, Xiao-Juan Ma2, Peng Chen2. 1. Department of Rheumatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. liuhongxiao_123@163.com. 2. Department of Rheumatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China. 3. Department of Vaccine Engineering, Beijing Institute of Basic Medical Sciences, Beijing, 100850, China.
Abstract
OBJECTIVE: To explore the mechanism of Bushen Qiangji Granule (, BSQJ) in restraining the osteogenic differentiation of ankylosing spondylitis (AS) fifibroblasts. METHODS: Hip joint capsules were obtained from AS patients (n=10) receiving total hip replacement and healthy hip joint capsules from patients with hip fracture (n=10) receiving surgery as a control. Finite fifibroblast lines were established from these tissue samples to observe the effect of BSQJ on suppressing osteogenic differentiation of fifibroblasts. The expression of osteogenic marker gene corebinding factor a1 (Cbfa1) and Smad family proteins were examined by Western blot and real-time quantitative polymerase chain reaction (qPCR). RESULTS: The mRNA expression level of Cbfa1 was significantly higher in AS fibroblasts than that in normal fibroblasts and the expression of pSmad1, pSmad5, Smad4 and Cbfa1 in AS fibroblasts was also higher, demonstrating the activation of the BMP/Smads signal pathway in AS fifibroblasts. BSQJ-medicated serum not only restrained the mRNA and protein expression levels of Cbfa1 and inhibited protein expression level of Smad4 but also decreased the expression quantities of pSmad1 and pSmad5. CONCLUSIONS: BSQJ can inhibit osteogenic differentiation of AS fifibroblasts in vitro by suppressing the activation of the BMP/Smads signal pathway. This may be the important molecular mechanism of BSQJ in regulating AS ossifification.
OBJECTIVE: To explore the mechanism of Bushen Qiangji Granule (, BSQJ) in restraining the osteogenic differentiation of ankylosing spondylitis (AS) fifibroblasts. METHODS: Hip joint capsules were obtained from AS patients (n=10) receiving total hip replacement and healthy hip joint capsules from patients with hip fracture (n=10) receiving surgery as a control. Finite fifibroblast lines were established from these tissue samples to observe the effect of BSQJ on suppressing osteogenic differentiation of fifibroblasts. The expression of osteogenic marker gene corebinding factor a1 (Cbfa1) and Smad family proteins were examined by Western blot and real-time quantitative polymerase chain reaction (qPCR). RESULTS: The mRNA expression level of Cbfa1 was significantly higher in AS fibroblasts than that in normal fibroblasts and the expression of pSmad1, pSmad5, Smad4 and Cbfa1 in AS fibroblasts was also higher, demonstrating the activation of the BMP/Smads signal pathway in AS fifibroblasts. BSQJ-medicated serum not only restrained the mRNA and protein expression levels of Cbfa1 and inhibited protein expression level of Smad4 but also decreased the expression quantities of pSmad1 and pSmad5. CONCLUSIONS: BSQJ can inhibit osteogenic differentiation of AS fifibroblasts in vitro by suppressing the activation of the BMP/Smads signal pathway. This may be the important molecular mechanism of BSQJ in regulating AS ossifification.
Authors: M Rudwaleit; D van der Heijde; R Landewé; N Akkoc; J Brandt; C T Chou; M Dougados; F Huang; J Gu; Y Kirazli; F Van den Bosch; I Olivieri; E Roussou; S Scarpato; I J Sørensen; R Valle-Oñate; U Weber; J Wei; J Sieper Journal: Ann Rheum Dis Date: 2010-11-24 Impact factor: 19.103