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用氨酸修饰的鱼皮肤抗氧化及其氧基灭活性
Yunyao Wang1, Ruiqing Jiu1, Zongda Li1
1State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Quality and Healthy of Tianjin, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China. liuhaochi@tust.edu.cn.
Journal of materials chemistry. B
|January 15, 2025
概括
蒂拉皮亚可以清除基基,而氨酸的位置和构造是关键. 这些抗氧化不表现出细胞毒性,并增强细胞防御酶.
科学领域:
- 生物化学 生物化学
- 酸科学 酸科学
- 抗氧化剂研究 抗氧化剂研究
背景情况:
- 清除基 (̇OH) 是对抗氧化应激至关重要的.
- 抗氧化的活性受到氨基酸序列,位点活性和构造的影响.
- 了解这些因素对于设计有效的抗氧化来说至关重要.
研究的目的:
- 调查鱼五 (P1) 和其类型 (P2,P3,P4) 的基 (̇OH) 清除活性.
- 为了确定铁的数量,位置和构成在抗氧化活性中的作用.
- 评估这些对抗氧化酶活动的安全性和体内影响.
主要方法:
- 鱼五及其类型的合成和表征.
- 基 (OH) 清除活动测定.
- 密度函数理论 (DFT) 模拟用于激进清理站点分析.
- 在Caco-2细胞中的细胞毒性评估.
- 测量抗氧化酶活动 (GSH-PX,CAT,SOD) 和马隆迪甲 (MDA) 水平.
主要成果:
- P3 (YYGDQYY) 显示出最高的OH清除活性 (58.6±1.3%).
- DFT模拟证实,氧的有效扩散距离内的氨酸位点对于清理至关重要.
- 这些没有表现出细胞毒性,并且显著增加了抗氧化酶活性,同时降低了治疗细胞中的MDA水平.
结论:
- 氨酸残留的数量和位置,以及的构造,决定了抗氧化的有效性.
- 提拉皮亚类似物显示出有前途的抗氧化特性和安全性,有可能用于对抗氧化应激.
- 这项研究为设计基于自然序列的新型,强效抗氧化提供了洞察力.
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