Antioxidant Activity of Oat Proteins Derived Peptides in Stressed Hepatic HepG2 Cells.

Antioxidant Activity of Oat Proteins Derived Peptides in Stressed Hepatic HepG2 Cells.
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燕麦蛋白衍生肽在应激肝 HepG2 细胞中的抗氧化活性。

DOI:
10.3390/antiox5040039
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发表时间:
2016-10-20
期刊:
Antioxidants (Basel, Switzerland)
影响因子:
--
通讯作者:
Tsopmo A
Tsopmo A
中科院分区:
其他
文献类型:
--
作者:
Du Y;Esfandi R;Willmore WG;Tsopmo A

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本研究的目的是确定,第一次,七肽(P1-P7)来自燕麦蛋白水解在细胞模型中的抗氧化活性。在氧自由基吸收能力(ORAC)测定中,发现P2具有最高的自由基清除活性(0.67 ± 0.02 µM Trolox当量(TE)/µM肽),其次是P5、P3、P6、P4、P1和P7,其活性在0.14-0.61 µM TE/µM之间。在肝HepG 2细胞中,20-300 µM的肽均无细胞毒性。除了具有最高的ORAC值外,P2对2,2 ′-偶氮二(2-甲基丙脒)二盐酸盐诱导的氧化应激也具有最大的保护作用(细胞活力增加29%)。P1、P6和P7的保护程度较低,细胞活力增加8%-21%。细胞的保护归因于几个因素,包括减少细胞内活性氧的产生,增加细胞内谷胱甘肽,和三种主要的内源性抗氧化酶的活性增加。
The purpose of this study was to determine, for the first time, antioxidant activities of seven peptides (P1–P7) derived from hydrolysis of oat proteins in a cellular model. In the oxygen radical absorbance capacity (ORAC) assay, it was found that P2 had the highest radical scavenging activity (0.67 ± 0.02 µM Trolox equivalent (TE)/µM peptide) followed by P5, P3, P6, P4, P1, and P7 whose activities were between 0.14–0.61 µM TE/µM). In the hepatic HepG2 cells, none of the peptides was cytotoxic at 20–300 µM. In addition to having the highest ORAC value, P2 was also the most protective (29% increase in cell viability) against 2,2′-azobis(2-methylpropionamidine) dihydrochloride -induced oxidative stress. P1, P6, and P7 protected at a lesser extent, with an 8%–21% increase viability of cells. The protection of cells was attributed to several factors including reduced production of intracellular reactive oxygen species, increased cellular glutathione, and increased activities of three main endogenous antioxidant enzymes.
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