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Characterization and Exploration of Potential Neuroprotective Peptides in Walnut (Juglans regia) Protein Hydrolysate against Cholinergic System Damage and Oxidative Stress in Scopolamine-Induced Cognitive and Memory Impairment Mice and Zebrafish

文献类型： 外文期刊

作者： Wang, Shuguang 1 ; Su, Guowan 1 ; Zhang, Xun 4 ; Song, Guohui 4 ; Zhang, Lixia 4 ; Zheng, Lin 1 ; Zhao, Mouming 1 ;

作者机构： 1.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510640, Peoples R China

2.Guangdong Food Green Proc & Nutr Regulat Technol, Guangzhou 510650, Peoples R China

3.Guangdong Huapeptides Biotechnol Co Ltd, Zhaoqing 526000, Peoples R China

4.Henan Acad Agr Sci, Inst Agr Prod Proc, Zhengzhou 450002, Peoples R China

关键词： walnut protein hydrolysate; scopolamine; cholinergic system; oxidative stress; peptidomics

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：4.192； 五年影响因子：4.289 ）

ISSN： 0021-8561

年卷期： 2021 年 69 卷 9 期

页码：

收录情况： SCI

摘要： The purpose of this study was to determine the neuroprotective effect and mechanism of walnut protein hydrolysates (WPH) against memory deficits induced by scopolamine in mice and further to validate the potent neuroprotective peptides identified by integrated approaches of in silico analysis and peptidomics in scopolamine-induced zebrafish. Results showed that a remarkable amelioration on behavioral performance was observed for oral administration of WPH, and disorders of cholinergic system and oxidative stress were normalized in the brains of mice also. Unfortunately, no obvious inflammatory response and anti-inflammatory effect were observed. Additionally, WPH significantly upregulated the expressions of antioxidant defense-related protein (Nrf2) and neurotrophic-related protein (BDNF and CREB). Furthermore, 20 peptides with relatively higher abundance and PeptideRanker scores were predicted by docking to AchE and Keap1. Among them, FY and SGFDAE with the highest binding affinities, -9.8 and -8.0 kcal/mol, were considered as the promising AchE and Keap1 inhibitors, respectively. They were further validated to have neuroprotective capacity in scopolamine-induced zebrafish, indicating that peptidomics and in silico prediction might be the effective approaches to screen neuroprotective peptides.

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