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鉴定具有抑制皮肤老化酶活性的奇亚籽(Salvia hispanica L.)肽。

Identification of chia seed (Salvia hispanica L.) peptides with enzyme inhibition activity towards skin-aging enzymes.

机构信息

Protein Chemistry and Bioactive Peptides Laboratory, Department of Food Science, Purdue University, 745 Agriculture Mall Dr., West Lafayette, IN, 47907, USA.

出版信息

Amino Acids. 2020 Aug;52(8):1149-1159. doi: 10.1007/s00726-020-02879-4. Epub 2020 Jul 30.

Abstract

Chia (Salvia hispanica) seed peptides have drawn attention because of their antioxidant, antihypertensive and anti-inflammatory activities, making them ideal candidates for development of cosmeceutical skin products. However, there are no preceding reports that address their aging-related enzyme inhibitory activities. The aim of this study was to investigate the in vitro and in silico inhibitory activity of chia seed peptides towards the main aging-related enzymes. Enzyme-inhibition activity of < 3 kDa chia seed peptides towards collagenase, hyaluronidase, tyrosinase, and elastase was evaluated. Further fractions were obtained by size exclusion chromatography (SEC) and re-tested for enzyme inhibitory activity. Peptide sequences were identified from the most effective fraction and used for in silico analysis. The < 3 kDa peptides exhibited inhibitory activities towards elastase (65.32%, IC = 0.43 mg/mL), tyrosinase (58.74%, IC = 0.66 mg/mL), hyaluronidase (26.96%, IC = 1.28 mg/mL), and collagenase (28.90%, IC = 1.41 mg/mL). They showed mixed-type inhibition patterns towards elastase and hyaluronidase, while a non-competitive inhibition pattern was observed towards collagenase and tyrosinase. Fraction II obtained by SEC, showed higher enzyme inhibitory activity. Seven peptides were identified in this fraction (APHWYTN, DQNPRSF, GDAHWAY, GDAHWTY, GDAHWVY, GFEWITF, and KKLKRVYV), which according to in silico analysis, possess 19-29 enzyme-peptide pair interactions towards elastase and three peptide sequences shared homology sequence (GDAHW). These results demonstrate that peptides from chia seeds may contribute in the improvement of skin health by offering protection against aging-related enzymes by preventing degradation of the protein matrix on the skin; however, further in vivo studies are needed to evaluate its actual capability.

摘要

奇亚(Salvia hispanica)种子肽因其具有抗氧化、降血压和抗炎活性而受到关注,使其成为开发美容皮肤产品的理想候选物。然而,目前尚无关于其与衰老相关的酶抑制活性的报道。本研究旨在研究奇亚种子肽对主要与衰老相关的酶的体外和计算机模拟抑制活性。评估了<3 kDa 的奇亚种子肽对胶原酶、透明质酸酶、酪氨酸酶和弹性蛋白酶的抑制活性。进一步通过尺寸排阻色谱(SEC)获得了进一步的级分,并重新测试了其对酶抑制活性。从最有效的级分中鉴定出肽序列,并用于计算机模拟分析。<3 kDa 的肽对弹性蛋白酶(65.32%,IC=0.43 mg/mL)、酪氨酸酶(58.74%,IC=0.66 mg/mL)、透明质酸酶(26.96%,IC=1.28 mg/mL)和胶原酶(28.90%,IC=1.41 mg/mL)表现出抑制活性。它们对弹性蛋白酶和透明质酸酶表现出混合抑制模式,而对胶原酶和酪氨酸酶则表现出非竞争性抑制模式。通过 SEC 获得的级分 II 显示出更高的酶抑制活性。在该级分中鉴定出七种肽(APHWYTN、DQNPRSF、GDAHWAY、GDAHWTY、GDAHWVY、GFEWITF 和 KKLKRVYV),根据计算机模拟分析,这些肽对弹性蛋白酶具有 19-29 种酶-肽对相互作用,并且三个肽序列具有同源序列(GDAHW)。这些结果表明,奇亚种子肽可以通过防止皮肤蛋白基质降解,为皮肤健康提供保护,从而有助于改善皮肤健康,预防与衰老相关的酶的降解;然而,需要进一步的体内研究来评估其实际能力。

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