过表达THEM4对高糖诱导的人肾小管上皮细胞胶原分泌的影响
Chinese Pharmacological Bulletin(2017)
Abstract
目的观察过表达硫酯酶超家族成员4(thioesterase superfamily member 4,THEM4)对高糖诱导的人肾小管上皮细胞胶原分泌的影响。方法体外培养人肾小管上皮细胞(human renal proximal tubular epithelial cell,HKC),将细胞随机分为正常对照组(5.5 mmol·L-1normal glucose,Control)、高糖组(30 mmol·L-1high glucose,HG)、高糖+p Yrads-4-THEM4质粒转染组(HG+THEM4)、高糖+p Yr-adshuttle-4空质粒对照组(HG+V)。后3组经高糖刺激48 h后终止培养,Western blot检测THEM4、phospho-Akt(Ser473)、TGF-β1、α-SMA的表达;免疫细胞荧光检测THEM4蛋白表达和定位;ELISA方法检测细胞上清液中Ⅰ型胶原(collagenⅠ,ColⅠ)、Ⅲ型胶原(collagenⅢ,ColⅢ)分泌情况。结果高糖刺激可导致人肾小管上皮细胞内THEM4表达降低,phospho-Akt(Ser 473)、TGF-β1、α-SMA的表达增强及ColⅠ、ColⅢ分泌;过表达THEM4能够逆转高糖刺激所导致人肾小管上皮细胞phospho-Akt(Ser 473)蛋白的活化,下调α-SMA、TGF-β1表达,抑制ColⅠ、ColⅢ的分泌。结论过表达THEM4能够降低高糖诱导的胶原分泌,可能是通过抑制phospho-Akt(Ser 473)蛋白的活化,下调α-SMA、TGF-β1表达而实现的。
MoreTranslated text
Key words
thioesterase superfamily member 4,PI3K/ Akt,high glucose,human renal tubular cells,TGF-β1,collagen Ⅰ,collagen Ⅲ
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined