含有ROS响应的甲氨酸的两性可以传递酶触发的阶段过渡和抗氧化细胞保护
Yoshika Hara1, Ken Yoshizawa1, Atsuya Yaguchi1
1Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei 184-8588, Tokyo, Japan.
Biomacromolecules
|May 9, 2024
概括
研究人员设计了含有甲的自我组装,以对抗活性氧物种 (ROS). 这些形成水凝,在氧化时过渡到溶阶段,为细胞提供对氧化应激的保护.
科学领域:
- 生物材料科学 生物材料科学
- 超分子化学 超分子化学
- 氧化压力研究研究 氧化压力研究
背景情况:
- 反应性氧物种 (ROS) 对于细胞信号传递至关重要,但当过度生产时会破坏,导致衰老和突变.
- 细胞抗氧化系统利用氧化还原活性硫和过渡金属来减轻ROS.
- 现有的抗氧化剂策略需要从自然生物系统中获得灵感.
研究的目的:
- 设计新型含有甲氨酸的自我组装作为对氧化应激有反应的生物材料.
- 调查 metionin 含量与水凝对氧化反应的关系.
- 评估这些对ROS诱导的细胞损伤的保护作用.
主要方法:
- 自组装的合成,包含不同数量的甲氨酸残留物.
- 在暴露于过氧化 (H2O2) 时,对水凝的形成和从凝到溶液相转换的表征.
- 在细胞模型中评估对H2O2的敏感性和对ROS的保护.
主要成果:
- 含有 metionin 的可以成功形成水凝.
- 在H2O2氧化过程中,水凝表现出度依赖的凝到溶相过渡.
- 含有较高 metionin 含量的体表现出对氧化的敏感性增加,并增强了细胞的保护.
- 最有效的对酶生成的H2O2.2产生了反应.
结论:
- 开发了一种基于 metionin 的新型超分子生物材料.
- 通过设计对ROS表现出可调节的响应性.
- 这些生物材料为保护细胞免受氧化应激提供了一个有希望的策略,包括酶生成的ROS.
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