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http://dx.doi.org/10.5352/JLS.2021.31.2.126

Comparison of the Cytoprotective Effects of Several Natural and Synthetic Compounds against Oxidative Stress in Human Retinal Pigment Epithelial Cells  

Kim, Da Hye (Department of Smart Bio-Health, Dong-eui University)
Kim, Jeong-Hwan (Research and Development Department, BGN CARE Co., Ltd.)
Park, Seh-Kwang (Research and Development Department, BGN CARE Co., Ltd.)
Jeong, Ji-Won (BGN Eye Clinic)
Kim, Mi-Young (Research and Development Department, BGN CARE Co., Ltd.)
Nam, Soo-Wan (Department of Biotechnology, Dong-eui University)
Lee, Hyesook (Anti-Aging Research Center, Dong-eui University)
Choi, Yung Hyun (Anti-Aging Research Center, Dong-eui University)
Publication Information
Journal of Life Science / v.31, no.2, 2021 , pp. 126-136 More about this Journal
Abstract
Oxidative stress causes injury to and degeneration of retinal pigment epithelial (RPE) cells. It is involved in several retinal disorders and leads to vision loss. In the present study, we investigated the effect of 14 kinds of natural compounds and two kinds of synthetic compounds on oxidative stress-induced cellular damage in human PRE cell lines (ARPE-19). From among them, we selected five kinds of compounds, including auranofin, FK-509, hemistepsin A, honokiol, and spermidine, which have inhibitory effects against hydrogen peroxide (H2O2)-mediated cytotoxicity. In addition, we found that four kinds of compounds (excluding auranofin) have protective effects on H2O2-induced mitochondrial dysfunction. Furthermore, the expression of phosphorylation of histone H2AX, a sensitive marker of DNA damage, was markedly up-regulated by H2O2, whereas it was notably down-regulated by FK-506, honokiol, and spermidine treatment. Meanwhile, five kinds of candidate compounds had no effect on H2O2-induced intracellular reactive oxygen species (ROS) levels, suggesting that the five candidate compounds have protective effects on oxidative stress-induced cellular damage through the ROS-independent pathway. Taken together, according to the results of H2O2-mediated cellular damage―such as cytotoxicity, apoptosis, mitochondrial dysfunction, and DNA damage―spermidine and FK-506 are the natural and synthetic compounds with the most protective effects against oxidative stress in RPE. Although further studies on the identification of the mechanism responsible are required, the results of the present study suggest the possibility of using spermidine and FK-506 to suppress the risk of retinal disorders.
Keywords
Apoptosis; DNA damage; mitochondrial dysfunction; oxidative stress; retinal pigment epithelial cells;
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