• Tianjin Medical University Eye Hospital, Tianjin Medical University Eye Institute , College of Optometry and Ophthalmology, Tianjin 300384, China;
Dong Lijie, Email: aitaomubang@126.com
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Objective  To observe the effect of polypyramidine tract binding protein-associated splicing factor (PSF) on hydrogen peroxide (H2O2) induced apoptosis of retinal pigment epithelial (RPE) cells in vitro. Methods  RPE cells were cultured and divided into a normal group, normal+H2O2 group, Vec+H2O2group, PSF+H2O2 group according to the experimental design. Overexpression of PSF in RPE cells were achieved by pEGFP-PSF plasmid transient transfection into RPE cells, then RPE cells were exposed to H2O2. The morphological changes were observed by hematoxylin-eosin (HE) staining and Live/Dead staining while the survival rate of cells was detected by MTT assay. The effect of PSF on H2O2-induced RPE apoptosis was analyzed by Cell Death Detection ELISA kit. Meanwhile, intracellular reactive oxygen species (ROS) level was detected by using DCFH-DA method. Results  Overexpression of PSF could effectively alleviate the morphological changes induced by H2O2 stimulation shown by HE staining, and effectively reduce dead cells number shown by Live/Dead staining. After H2O2 stimulation, the survival rate, apoptosis rate and ROS production level in PSF overexpression group were 0.68±0.12, 0.44±0.08 and 18 616±3 382.54 respectively, showing significant difference in comparison with the vector plasmid group and normal group (P<0.05). Conclusion  PSF overexpression plays a protective role in H2O2-induced apoptosis by inhibiting the production of ROS in RPE cells.

Citation: Tian Fang, Li Wenbo, Huang Liangyu, Gao Meizi, Zhao Jinzhi, Hu Bojie, Zhang Xiaomin, Li Xiaorong, Dong Lijie. The effect of polypyrimidine tract binding protein-associated splicing factor on hydrogen peroxide induced apoptosis of retinal pigment epithelial. Chinese Journal of Ocular Fundus Diseases, 2018, 34(2): 159-163. doi: 10.3760/cma.j.issn.1005-1015.2018.02.012 Copy

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