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Isolation, identification and in silico analysis of two novel cytoprotective peptides from tilapia skin against oxidative stress-induced ovarian granulosa cell damage

文献类型： 外文期刊

作者： Yin, Haowen 1 ; Zhang, Shilin 3 ; Yue, Hao 1 ; Wang, Meng 1 ; Zeng, Jian 3 ; Wu, Wenjin 4 ; Wang, Jingfeng 1 ; Zheng, Hongwei 1 ; Xue, Changhu 1 ; Zhao, Yun-Tao 3 ;

作者机构： 1.Ocean Univ China, Coll Food Sci & Engn, Qingdao 266003, Peoples R China

2.Qingdao Inst Marine Bioresources Nutr & Hlth Innov, Qingdao 266109, Peoples R China

3.Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China

4.Hubei Acad Agr Sci, Inst Agr Prod Proc & Nucl Agr Technol, Wuhan 430064, Peoples R China

5.Guangdong Ocean Univ, Coll Food Sci & Technol, 1 Hai Da Rd, Zhanjiang 524000, Guangdong, Peoples R China

6.Ocean Univ China, Coll Food Sci & Engn, 5 Yu Shan Rd, Qingdao 266003, Shandong, Peoples R China

关键词： Tilapia ( Oreochromis mossambicus ) skin; Peptides; Ovarian granulosa cells; Cytoprotective effect; In silico analysis

期刊名称：JOURNAL OF FUNCTIONAL FOODS （ 影响因子：5.6； 五年影响因子：5.3 ）

ISSN： 1756-4646

年卷期： 2023 年 107 卷

页码：

收录情况： SCI

摘要： The high-value-added substances in tilapia (Oreochromis mossambicus) skin have not been fully utilized, and the demand for novel food-derived bioactive peptides is increasing. Here, the cytoprotective peptides in the tilapia skin enzymatic hydrolyzate were isolated and identified. In addition, novel peptides with potential high bio-logical activity (APDPFRMY and NGGPDWAR) were screened by a computer virtual screening strategy for artificial synthesis, and the cytoprotective activity was verified by the oxidative stress-induced ovarian granulosa cell model. Meanwhile, molecular docking and western blot results showed that two novel cytoprotective pep-tides could interact with critical residues of the Kelch domain of Keap1 through hydrogen bonding, electrostatic interactions, and hydrophobic interactions. Moreover, APDPFRMY and NGGPDWAR could partially occupy the binding sites of Nrf2 and Keap1, thus playing a role in protecting cells from oxidative damage. This study also provides a new idea for isolating and identifying food-derived bioactive peptides.

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