• 1. Department of Ophthalmology, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China;
  • 2. Department of Ophthalmology, the People’s Hospital of Jianyang, Chengdu 641400, China;
Lyu Hongbin, Email: oculistlvhongbin@swmu.edu.cn
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Objective  To observe and preliminarily explore the effects of Deferasirox (DFX) on lipid peroxidation and ferroptosis in human retinal endothelial cells (HREC). Methods A c ell experimental study. Divided the in vitro cultured HREC into normal glucose (NG) group, high glucose (HG) group, normal glucose+DFX (NG+DFX) group, high glucose+DFX (HG+DFX) group, normal glucose+DFX+FAC (NG+DFX+FAC) group, and high glucose+DFX+FAC (HG+DFX+FAC) group. Light microscope was used to observe the morphology of the cells; cell proliferation was detected by Cell Counting Kit-8 (CCK-8) assay, and Calcein-AM staining was used to detect the unstable iron pool (LIP) content, Fluorescent enzyme-linked immunosorbent assay reader was used to detect the reactive oxygen species (ROS), malondialdehyde (MDA), glutathione (GSH), and oxidized glutathione (GSSG); Western blot was used to detect the expression levels of Glutathione Peroxidase 4 (GPX4) and Solute Carrier Family 7 Member 11 (SLC7A11). Two-tailed Student t test was used for comparison between the two groups; one-way ANOVA was used for comparison between multiple groups. Results Compared with the HG group and the HG+DFX+FAC group, the cell proliferation rate and the contents of GSH, GPX4, and SLC7A11 in the HG+DFX group were significantly increased, and the differences were statistically significant (F=150.70, 21.02, 26.09, 52.62; P<0.001). The contents of LIP, ROS, MDA, and GSSG were significantly decreased, and the differences were statistically significant (F=807.2, 16.94, 31.62, 19.21; P<0.001). Conclusions High glucose significantly induces an increase in LIP, lipid peroxidation, and ferroptosis in HREC. Deferasirox inhibits lipid peroxidation and ferroptosis in HREC by downregulating LIP levels.