Open AccessLycium barbarum polysaccharide protects ARPE‑19 cells against H2O2‑induced oxidative stress via the Nrf2/HO‑1 pathway
Author(s) -
Ran Liang,
Qian Zhao,
Qing Zhu,
Xin He,
Mingjun Gao,
Yiru Wang
Publication year - 2021
Publication title -
molecular medicine reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.727
H-Index - 56
eISSN - 1791-3004
pISSN - 1791-2997
DOI - 10.3892/mmr.2021.12409
Subject(s) - oxidative stress , apoptosis , viability assay , signal transduction , oncogene , cell cycle , heme oxygenase , cell , lycium , cancer research , malondialdehyde , chemistry , microbiology and biotechnology , antioxidant , pharmacology , heme , biology , medicine , biochemistry , pathology , enzyme , alternative medicine
Age‑related macular degeneration (AMD) is a global health problem. Lycium barbarum polysaccharide (LBP), a traditional Chinese herbal medicine, has been proven to be effective against several eye diseases. However, only a few studies have investigated the effectiveness of LBP for AMD. In the present study, the human retinal epithelial cell line, ARPE‑19, was pretreated with LBP for 24 h before exposure to H 2 O 2 (500 µ M). Cell viability was assessed, and a series of oxidative and antioxidant indicators were evaluated to determine the influence of LBP on H2O2‑triggered oxidative stress. The present study also determined the apoptosis status, as well as the expression levels of apoptotic proteins and nuclear factor erythroid 2‑related factor 2 (Nrf2)/heme oxygenase‑1 (HO‑1) pathway proteins. The present study aimed to determine the protective role for LBP pretreatment and its underlying molecular mechanism. The results of the present study suggest that pretreatment of ARPE‑19 cells with LBP exhibit high efficacy at reducing oxidative damage and inhibiting cell apoptosis. Furthermore, LBP may modulate the expression of proteins involved in the apoptotic pathway and activate the Nrf2 signaling pathway.