肿瘤坏死因子-α在骨关节炎成纤维样滑膜细胞中上调β1,4-半乳糖基转移酶-I的表达  被引量:4

Tumor necrosis factor-α up-regulates the expression of β1, 4-Galactosyltransferase- I in fibroblast-like synoviocytes of osteoarthritis

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作  者:朱新辉[1] 徐大伟[1] 刘巍[1] 崔胜宇[1] 黄巍[1] 崔志明[1] 

机构地区:[1]江苏省南通市第一人民医院骨科,226001

出  处:《中华风湿病学杂志》2013年第10期681-684,I0002,共5页Chinese Journal of Rheumatology

基  金:国家自然科学基金(81300955);江苏省南通市科技计划(BK2011013,BK2012075)

摘  要:目的探讨肿瘤坏死因子(TNF)-α与β1,4-半乳糖基转移酶-I(β1,4-GalT-I)在骨关节炎滑膜炎症过程中的相互关系。方法提取各8例骨关节炎患者(试验组)和膝关节游离体患者(对照组)的滑膜组织,运用反转录-聚合酶链反应(RT-PCR)检测滑膜组织中B1,禾GalT-I和TNF-α表达水平,运用免疫荧光双标法检测β1,4-GalT-I和TNF-α在滑膜组织中的共定位情况;培养成纤维样滑膜细胞(FLSs),运用酶联免疫吸附试验(ELISA)法检测脂多糖刺激后TNF-α表达变化及运用实时荧光定量聚合酶链反应(real-timePCR)检测脂多糖和TNF-α刺激后,β1,4-GaIT-I的表达变化;运用t检验和单因素方差分析进行统计学分析。结果①与对照组[β1,4-GalT.I(0.48±0.09),TNF-α(0.46±0.07)相比,骨关节炎滑膜组织中β1,4-GaIT-I(0.94±0.16)和TNF-α(1.19±0.19)表达均明显增加(t=3.47,t=4.06,均P〈0.01),且存在共定位;②脂多糖能够诱导FLSs β1,4-GalT-I[11.2±0.9与2.9±0.5(量效),22.3±2.3与4.4±0.9(时效),F=83.03,F=157.58,均P〈0.05]表达增加;③脂多糖在FLSs中促进TNF-α[(1256±96)pg/ml与(101±7)pg/ml,F=124,F=93.6,均P〈0.01]表达增加;③TNF-α在FLSs中也诱导β1,4-GalT-I[23.2±1.9与8.4±1.3(量效),23.9±1.8与11.5±1.3(时效),F=431.96,均P〈0.05]的表达增加。结论在骨关节炎的滑膜炎症过程中,FLSs可能运用TNF-α调控β1,4-GalT-I的表达。Objective To analyze whether β1,4-galactosyltransferase- I (β1,4-GalT- I ) expression correlates with the expression of tumor necrosis factor (TNF)-α in osteoarthritis (OA). Methods Synovial tissue samples from eight OA patients and eight healthy people were obtained as the experimental group and controls respectively. The mRNA levels of β1,4-GaiT- 1 and TNF-α were measured by reverse transcription-polymerase chain reaction (RT-PCR) and real-time PCR. Enzyme linked immunosorbent assay (ELISA) was used to test the expression of TNF-α in the protein level. Cellular colocalization of β1,4-GaiT- I and TNF-α was analyzed by double immunofluorescence. ANOVA and t-test was used for statistical analysis. Results ① Compared with the control group [β1,4-GalT- I (0.48±0.09), TNF-α (0.46±0.07)], the expression of β1,4- GalT-I (0.94±0.16) and TNF-α(1.19±0.19) were significantly increased in OA synovial tissue (t=3.47, t=4.06,P〈0.01) and there was colocalization between 131,4-GAIT-I and TNF-α; ② Lipopolysaccharide (LPS) could induce fibroblast-like synoviocytes (FLSs) β1,4-GAIT-I [11.2±0.9 vs 2.9±0.5 (dose effect), 22.3±2.3 vs 4.4±0.9 (time effect), F=83.03, F=157.58, P〈0.05] overexpression; ③ LPS could induce FLSs TNF-α [ (1256±96) vs (101±7) pg/ml, F=431.96, P〈0.01 ] overexpression; ④ Not only endogenous TNF-α, but exogenous TNF-α could induce FLSs β1,4-GAIT-I [23.2±1.9 vs 8.4±1.3 (dose effect), 23.9±1.8 vs 11.5±1.3 (time effect), F=124, F=93.6, P〈0.05] overexpression. Conclusion It is possible that FLSs mayuse TNF-α to control β1,4-GaiT-I functions during inflammation in OA.

关 键 词:肿瘤坏死因子Α 脂多糖类 骨关节炎 成纤维样滑膜细胞 β1 4-半乳糖基转移酶-I 

分 类 号:R393[医药卫生—基础医学]

 

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