机构地区:[1]南京医科大学第一附属医院妇产科,210029
出 处:《中华妇产科杂志》2013年第1期29-33,共5页Chinese Journal of Obstetrics and Gynecology
基 金:国家自然科学基金(81070511);江苏省自然科学基金(21010583)
摘 要:目的探讨转化生长因子β1(TGF-β1)对羊膜vc3sr]细胞中基质金属蛋白酶9(MMP-9)及其组织抑制物1(TIMP-1)和核因子KB(NF.KB)表达的影响及其调控机制。方法在羊膜细胞系WISH细胞中分别加入不同浓度(0、2、10、20rig/m1)的TGF-β1,培养24h后,分别应用逆转录(RT)PCR技术检测WISH细胞中TIMP.1及MMP-9mRNA的表达水平,蛋白印迹法检测TIMP-1、MMP-9及NF.KB蛋白的表达。结果(1)TIMP.1mRNA及蛋白表达:经不同浓度TGF-β1(0、2、10、20rig/m1)处理后,WISH细胞中TIMP-1mRNA的表达水平随TGF-131浓度的增加而升高,分别为0.413±0.036、0.623±0.058、1.392±0.124及1.387±0.102,其中2、10及20rig/nil浓度时TIMP-1mRNA表达水平分别与0rig/ml浓度比较,差异均有统计学意义(P〈0.05);WISH细胞中TIMP-1蛋白表达水平随TGF-β1浓度的增加而升高,分别为0.357±0.031、0.596±0.048、1.243±0.097及1.359±0.121,2、10及20rig/ml浓度的TGF-β处理后,WISH细胞中TIMP-1蛋白表达水平分别与0ng/ml浓度时比较,差异有统计学意义(P〈0.05)。(2)MMP-9mRNA及蛋白表达:经不同浓度的TGF-β1(0、2、10、20ng/m1)处理后,WISH细胞中MMP-9mRNA表达水平随TGF-131浓度的增加而降低,分别为1.325±0.056、0.987±0.081、0.610±0.034及0.347±0.023,其中2、10及20rig/ml浓度时MMP-9mRNA表达水平分别与0rig/ml浓度时比较,差异有统计学意义(P〈0.05);WISH细胞中MMP-9蛋白表达水平随TGF.t31浓度的增加而降低,分别为1.119±0.064、1.008±0.052、0.578±0.041及0.401±0.015,2、10及20rig/ml浓度时MMP-9蛋白的表达水平分别与0rig/ml浓度时比较,差异有统计学意义(P〈0.05)。(3)NF-KB蛋白表达:经2、10、20ng/ml浓度时TGF-β1处理后,WISH细胞中NF-KB蛋白的表达水平分别为1.116±0.045、0.796±0.041及0.35Objective To investigate the effect of transforming growth factor -β (TGF--β) on the expression of matrix metalloproteinase 9 (MMP-9), tissue inhibitor of metalloproteinase 1 (TIMP-1), nuclearfactor kappa B(NF-KB) and the possible signalling pathways in human amniotic cells WISH. Methods The WISH cell line was cultured. WISH cells were added with TGF-[M of different concentrations (0, 2, 10 and 20 ng/ml, respectively) for 24 hours. Then, reverse transcription (RT)PCR and western blotting were used to analyze the protein and mRNA expression of TIMP-1 and MMP-9; and the expression of NF-KB was analyzed by western blot. Results ( 1 ) The profile of TIMP-1 mRNA ( 0. 413 ± 0. 036, 0. 623 ± 0. 058, 1. 392 ±0. 124, 1. 387±0. 102) in WISH cells elevated when the concentration of TGF-131 increased (0, 2, 10, 20 ng/ml). In accordance with TIMP-1 mRNA, the expression of TIMP-1 also elevated with the increase of TGF-β1 (0. 357 ± 0. 031, 0. 596 ± 0. 048, 1. 243 ± 0. 097 and 1. 359 ± 0. 121, respectively). And when 2, 10 or 20 ng/ml of TGF-[31 was added, the TIMP-1 mRNA and protein were significantly higher than the TIMP-1 mRNA and protein when no TGF-IM was added(P 〈 0.05 ). (2)In contrast with TIMP-1, MMP-9 mRNA ( 1. 325 ± 0. 056, 0. 987 ± 0. 081,0. 610 ± 0. 034, 0. 347 ± 0. 023 ) in WISH cells decreased when the concentration of TGF-β1 increased (0, 2, 10, 20 ng/ml). The MMP-9 protein ( 1.119 ±0. 064, 1. 008 ±0. 052, 0. 578 -±0. 041, 0. 401 -±0. 015) also decreased with the increase of TGF-β1. And when 2, 10 or 20 ng/ml of TGF-β1 was added, the MMP-9 mRNA and protein were significantly lower than the MMP-9 mRNA and protein when no TGF-β1 was added ( P 〈 0. 05 ). ( 3 ) The NF-KB protein ( 1. 423 ± 0. 065, 1. 116 ± 0. 045, 0. 796 ± 0. 041, 0. 359 ± 0. 021 ) was significantly reduced with the increase of TGF-β1 (0, 2, 10, 20 ng/ml;P 〈 0.05). Conclusions The mRNA and protein expression of TIMP-1 decreased when TGF-IM wa
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