Protective effects of thioltransferase (TTase) on oxidative damaged human lens epithelial cells induced by ultraviolet radiation
10.13389/j.cnki.rao.2017.0153
- VernacularTitle:硫醇转移酶(TTase)对紫外线诱导氧化损伤的人晶状体上皮细胞的保护作用
- Author:
Xiaoliang ZHENG
;
Jie ZHANG
;
Hong YAN
- Keywords:
thioltransferase;
ultraviolet radiation;
human lens epithelial cells;
small interfering RNA
- From:
Recent Advances in Ophthalmology
2017;37(7):601-604
- CountryChina
- Language:Chinese
-
Abstract:
Objective To discuss the protective effects of thioltransferase (TTase) on oxidative damaged human lens epithelial cells (HLEC) induced by ultraviolet radiation.Methods HLEC were cultured in vitro and then randomly divided into 4 groups:Normal group:normal cultured HLEC;UV group:normal cultured HLEC + UV radiation (with 302 nm UV radiation irradiation intensity 55.56 μW · cm-2 for 15 minutes,totaling irradiation volume 500 J · m-2);TTase siRNA group:HLEC transfected with TTase siRNA;TTase siRNA + UV group:HLEC transfected with TTase siRNA + UV radiation(with 302 nm UV radiation irradiation intensity 55.56 μW · cm-2 for 15 minutes,totaling irradiation volume 500 J · m-2).TTase mRNA expression was measured by qRT-PCR,the cell proliferation was detected by LDH Assay Kit,and the TTase activity was measured.TTase expression was detected by Western blotting.The levels of TGSH,GSH and GSSG of HLEC were measured,and then GSSG/T-GSH ratio was calculated.Results Cell proliferation ability in UV group,TTase siRNA group and TTase siRNA + UV group were decreased by 21.0％,17.0％ and 29.0％ compared with normal group (all P ＜ 0.05).TTase activity in UV group was 2.1 times of the normal group,TTlase siRNA group was 67.0％ of the normal group,Tlase siRNA + UV group was 1.3 times of TTase siRNA group (all P ＜ 0.05).TTase expression in UV group was 3.9 times of the normal group,TTase siRNA group was 35.0％ of the normal group,TTase siRNA + UV group was 3.0 times of siRNA group (all P ＜ 0.05).GSH content in UV group,TTase siRNA group and TTase siRNA + UV group were 68.4％,79.0％,61.7％ of the normal group (all P ＜ 0.05).GSSG content in UV group,TTase siRNA group and TTase siRNA + UV group were 2.3 times,1.4 times,3.7 times of the normal group (all P ＜ 0.05).GSSG/T-GSH in UV group,TTase siRNA group and TTase siRNA + UV group were 3.1 times,1.7 times,5.2 times of the normal group (all P ＜ 0.05).Conclusion TTase plays an important protective role in oxidative damaged HLEC induced by ultraviolet radiation.
