化学
弹性蛋白酶
弹性蛋白
光老化
哈卡特
生物化学
肽
体外
原弹性蛋白
水解物
生物物理学
酶
生物
水解
遗传学
细胞外基质
作者
Jieying Wu,Qinglan Li,Chun Cui,Jucai Xu
摘要
Abstract BACKGROUND The demand for food‐based anti‐photoaging products is surging because of the rising recognition of health and beauty, as well as enhanced comprehension of the detrimental impact of ultraviolet (UV) radiation. This study aimed to investigate the potential of bioactive peptides derived from bovine elastin, specifically focusing on identifying novel elastase inhibitory peptides and assessing their photoprotective properties using bioinformatics techniques. RESULTS A total of 48 bioactive peptides were screened in bovine elastin hydrolysate (EH) utilizing Peptide Ranker analysis. Three novel elastase inhibitory peptides, GAGQPFPI, FFPGAG and FPGIG (in descending order of activity), exhibited potent inhibitory effects on elastase in vitro , surpassing the inhibitory effect of EH by a factor of 1–2 and reaching significantly lower concentrations (8–15 times lower) than EH. The cumulative inhibitory effect of GAGQPFPI, FFPGAG, and FPGIG reached 91.5%. Further analysis revealed that FFPGAG and FPGIG exhibited mixed inhibition, whereas GAGQPFPI displayed non‐competitive inhibition. Molecular simulations showed that these peptides interacted effectively with the elastase active site through hydrogen bonding and hydrophobic interactions. Furthermore, GAGQPFPI, FFPGAG, and FPGIG demonstrated high stability in gastrointestinal digestion, demonstrated transcellular permeability across Caco‐2 cell monolayers, and exhibited remarkable photoprotective properties against UVB‐irradiated HaCaT cells. CONCLUSION GAGQPFPI showed the most promising potential as a functional food with photoprotective effects against UVB damage and inhibitory properties against elastase. © 2023 Society of Chemical Industry.
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