P38MAPK抑制剂SB203580对高糖诱导HK-2细胞转分化的影响

目的探讨不同浓度P38丝裂原活化蛋白激酶(P38MAPK)抑制剂SB203580在高糖诱导肾小管上皮细胞-肌成纤维细胞转分化(TEMT)过程中的机制及其较佳作用浓度。方法体外培养人近端肾小管上皮细胞(HK-2)并分为对照组(5.5 mmol/L GS)、DMSO组(5.5 mmol/L GS+30μmol/L SB203580等体积的DMSO)、高糖组(30mmol/L GS),以及30 mmol/L GS+5、10、20、30μmol/LSB203580处理的S5、S10、S20及S30组,干预48 h。四甲基偶氮唑蓝(MTT)法检测细胞增殖情况,计算半数抑制浓度(IC50);选取对照组、高...

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Published in天津医药 Vol. 44; no. 4; pp. 426 - 429
Main Author 贾林 林智峰 马莉 唐玉玲 杨锐 杨晓萍
Format Journal Article
LanguageChinese
Published 石河子大学第一附属医院肾病科 邮编832008 2016
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ISSN0253-9896
DOI10.11958/20150004

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Summary:目的探讨不同浓度P38丝裂原活化蛋白激酶(P38MAPK)抑制剂SB203580在高糖诱导肾小管上皮细胞-肌成纤维细胞转分化(TEMT)过程中的机制及其较佳作用浓度。方法体外培养人近端肾小管上皮细胞(HK-2)并分为对照组(5.5 mmol/L GS)、DMSO组(5.5 mmol/L GS+30μmol/L SB203580等体积的DMSO)、高糖组(30mmol/L GS),以及30 mmol/L GS+5、10、20、30μmol/LSB203580处理的S5、S10、S20及S30组,干预48 h。四甲基偶氮唑蓝(MTT)法检测细胞增殖情况,计算半数抑制浓度(IC50);选取对照组、高糖组、S30组,Western blot法检测P38MAPK、P-P38MAPK及α-平滑肌肌动蛋白(SMA)的表达、免疫荧光法检测α-SMA的表达。结果 (1)与对照组相比,DMSO对HK-2细胞增殖无显著抑制作用(P〉0.05);高糖组、S5组HK-2细胞增殖增多(P〈0.05);S20、S30组HK-2细胞增殖减少(P〈0.05)。与高糖组相比,S5、S10、S20、S30组细胞增殖均受到抑制(P〈0.05)。(2)与对照组相比,高糖组、S30组P-P38MAPK表达量增高(P〈0.05)。与高糖组相比,S30组P-P38MAPK的表达量降低(P〈0.05)。3组P38MAPK表达量无显著差异(P〉0.05)。(3)与对照组相比,高糖组、S30组α-SMA表达量增高(P〈0.05)。与高糖组相比,S30组α-SMA表达量降低(P〈0.05)。结论 30 mmol/L GS可以诱导HK-2细胞TEMT;30μmol/L SB203580是抑制HK-2细胞TEMT的较佳抑制浓度,SB203580可能通过下调P-P38MAPK表达,从而抑制HK-2细胞增殖及胞浆中α-SMA的表达,延缓TEMT进程。
Bibliography:diabetic nephropathy; kidney tubules; epithelial cells; epithelial-mesenchymaltransition; P38MAPK; SB203580
JIA Lin, LIN Zhifeng, MA Li, TANG Yuling, YANG Rui, YANG Xiaoping ( Division of Nephrology, the First Affiliated Hospital, College of Medicine, Shihezi University, Shihezi 832008, China )
Objective To observe the effects of different concentrations of SB203580, the inhibitor of P38 MAPK, inprocess of high glucose(GS)-induced renal tubular epithelial-myofibroblast transdifferentiation(TEMT). Methods Thecultured human renal tubular epithelial cells(HK-2) were divided into control group(5.5 mmol/L GS), GS(30 mmol/L GS)group and different concentrations of SB203580(30 mmol/L GS +5, 10, 20 and 30 μmol/L SB203580) groups. The treat-ments were for 48 hours. MTT assay was used to observe cell proliferation. The median inhibiting concentration(IC50) was cal-culated. Western blot assay was used to detect the expressions of P38 MAPK, P-P38 MAPK and α-smooth muscle actin(α-SMA) in control group, high-glucose group an
ISSN:0253-9896
DOI:10.11958/20150004