The Chemopreventive Peptide Lunasin Inhibits d-Galactose- Induced Experimental Cataract in Rats

Title:The Chemopreventive Peptide Lunasin Inhibits d-Galactose- Induced Experimental Cataract in Rats

Volume: 23 Issue: 7

Author(s): Guangzhi Dai, Ping Zhang, Pei Ye, Miaoqing Zhang, Ning Han, Haoyue Shuai and Shuhua Tan

Affiliation:

Keywords: Antioxidant enzymes, cataract, chemoprevention peptide, lunasin, oxidative damage, polyol pathway.

Abstract: Oxidative damage to the constituents of the eye lens is a major mechanism in the initiation and development of cataract. Lunasin, a 43-amino acids chemoprevention peptide, has been proved to possess potent anti-oxidative activity other than its established anticancer activities. Herein, we explored whether lunasin has preventative effects on d-galactose-induced experimental cataract in rat. After modeling, SD rats were administrated by instillation, 80 M of lunasin eye drops to each eye thrice daily and consecutively for 30 days. As a result, lunasin treatment effectively inhibited the progression of d-galactose-induced experimental cataract, and protected the lenses of rats from oxidative damage and attenuated the lipid peroxidation through up-regulation of antioxidant enzymes, and inhibited the activation of polyol pathway by decreasing AR activity. Additionally, in vitro studies proved that lunasin treatment could protect human lens epithelial cells (hLECs) against d-galactose induced cell damage and apoptosis, and up-regulate antioxidant enzymes. This is the first demonstration that lunasin could inhibit d-galactose-induced experimental cataract in rats by protecting against oxidative damage and inhibiting the activation of polyol pathway.

Cite this article as:

Dai Guangzhi, Zhang Ping, Ye Pei, Zhang Miaoqing, Han Ning, Shuai Haoyue and Tan Shuhua, The Chemopreventive Peptide Lunasin Inhibits d-Galactose- Induced Experimental Cataract in Rats, Protein & Peptide Letters 2016; 23 (7) . https://dx.doi.org/10.2174/0929866523666160505121047