Act1对高糖诱导肾小管上皮细胞炎症反应及细胞外基质表达的调控作用

doi:10.3969/j.issn.1000-8535.2023.05.004

摘要/Abstract

摘要： 目的研究核因子-κB激活剂1（Act1）对高糖诱导肾小管上皮细胞炎症反应及细胞外基质表达的调控作用。方法培养肾小管上皮细胞MK2,设置对照组和高糖组,处理12 h、24 h、48 h、72 h后检测细胞中Act1的mRNA和蛋白表达水平;设置si-NC组（5.5 mmol/L葡萄糖培养基中转染NC siRNA）、si-NC+高糖组（30 mmol/L葡萄糖培养基中转染NC siRNA）、si-Act1+高糖组（30 mmol/L葡萄糖培养基中转染Act1 siRNA）,48 h后检测细胞中Act1、E-钙黏蛋白（E-cadherin）、N-钙黏蛋白（N-cadherin）、I型胶原（Col-I）、III型胶原（Col-III）的mRNA和蛋白表达水平以及培养基中肿瘤坏死因子-α（TNF-α）、白介素-1β（IL-1β）、干扰素-γ（IFN-γ）的含量。结果高糖组处理12 h、24 h、48 h、72 h时细胞中Act1的mRNA和蛋白表达水平均高于对照组（P<0.05）;si-NC+高糖组处理48h时细胞中Act1、N-cadherin、Col-I、Col-III的mRNA和蛋白表达水平以及培养基中TNF-α、IL-1β、IFN-γ的含量均高于si-NC组,细胞中E-cadherin的mRNA和蛋白表达水平均低于si-NC组（P<0.05）;si-Act1+高糖组处理48h时细胞中Act1、N-cadherin、Col-I、Col-III的mRNA和蛋白表达水平以及培养基中TNF-α、IL-1β、IFN-γ的含量均低于si-NC+高糖组,细胞中E-cadherin的mRNA和蛋白表达水平均高于si-NC+高糖组（P<0.05）。结论 Act1表达增加对高糖诱导肾小管上皮细胞炎症反应激活和细胞外基质增多具有促进作用。

关键词: 糖尿病肾病, 肾小管上皮细胞, 核因子-κB激活剂1, 炎症反应, 细胞外基质

Abstract: Objective To study the regulation effect of nuclear factors-κB activator 1（NF-κB activator 1,Act1）on high glucose induced inflammatory response and extracellular matrix expression in renal tubular epithelial cells．Methods Renal tubular epithelial cells MK2 were cultured and control group and high glucose group were set．The mRNA and protein expression of Act1 were detected after treatment for 12,24,48 and 72 hours．MK2 were divided into si-NC group（transfected with NC siRNA in 5.5 mmol/L glucose medium）,si-NC+high glucose group（transfected with NC siRNA in 30 mmol/L glucose medium）and si-Act1+high glucose group（transfected with Act1 siRNA in 30 mmol/L glucose medium）．The mRNA and protein expression of Act1,E-cadherin,N-cadherin,type I collagen（Col-I）,and type III collagen（Col-III）and the contents of tumor necrosis factor-α（TNF-α）,interleukin-1β（IL-1β）,interferon-γ（IFN-γ）in culture medium were detected．Results The mRNA and protein expression levels of Act1 in cells of high glucose group were higher than those of control group at 12 h,24 h,48 h and 72 h（P<0.05）．The mRNA and protein expression levels of Act1,N-cadherin,CoL-I,Col-III in cells and the contents of TNF-α,IL-1β,IFN-γ in culture medium of si-NC+high glucose group were higher than those of si-NC group,the mRNA and protein expression levels of E-cadherin in cells were lower than those of si-NC group at 48 h（P<0.05）．The mRNA and protein expression levels of Act1,N-cadherin,CoL-I,Col-III in cells and the contents of TNF-α,IL-1β,IFN-γ in culture medium of si-Act1+high glucose group were lower than those of si-NC+high glucose group,the mRNA and protein expression levels of E-cadherin in cells were higher than those of si-NC+high glucose group at 48 h（P<0.05）．Conclusions The increased expression of Act1 promotes the activation of inflammatory response and the increase of extracellular matrix in renal tubular epithelial cells induced by high glucose．

Key words: diabetes nephropathy, renal tubular epithelial cells, nuclear factor-κB activator 1, inflammatory reaction, extracellular matrix

赵瑞玲, 林彩霞. Act1对高糖诱导肾小管上皮细胞炎症反应及细胞外基质表达的调控作用[J]. 广州医药, 2023, 54(5): 21-27.

ZHAO Ruiling, LIN Caixia. Regulation effect of Act1 on high glucose induced inflammatory response and extracellular matrix expression in renal tubular epithelial cells[J]. Guangzhou Medical Journal, 2023, 54(5): 21-27.

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