增强ESIntraPT/ESInterPT型6-甲索基的抗氧化和抗炎活性:来自DFT/TD-DFT,分子对接和分子动力学模拟的见解
Xingzhu Tang1, Ye Wang2, Lingling Wang3,4,5
1College of Science, Northeast Forestry University, Harbin 150040, China.
The journal of physical chemistry. A
|February 6, 2026
概括
像6-甲基黄 (6-MF) 这样的天然黄类药物显示出作为抗氧化剂和抗炎剂的前景. 计算研究表明,激发状态的分子间质子转移 (ESInterPT) 增强了抗氧化活性,而型6-MF通过向COX-2来抑制炎症.
科学领域:
- 计算化学是一种计算化学.
- 分子建模分子建模
- 药理学 药理学是指药理学的学科.
背景情况:
- 自由基介导的炎症需要有效的抗氧化剂和抗炎剂.
- 自然的黄类化合物,如6-甲基黄 (6-MF),具有多种生物活性,是有前途的候选物.
- 了解作用机制对于开发新型治疗化合物至关重要.
研究的目的:
- 阐明激发状态质子转移 (ESIPT) 机制与6-甲基黄醇 (6-MF) 的抗氧化/抗炎活性之间的关联.
- 在不同的环境中研究首选的ESIPT途径 (分子内与分子间).
- 为了评估6-MF与循环氧化酶-2 (COX-2) 的结合亲和力,以评估其抗炎作用的潜力.
主要方法:
- 密度函数理论 (DFT) 和时间依赖的DFT (TD-DFT) 计算.
- 分子对接和分子动力学 (MD) 模拟.
- 对希什菲尔德表面,潜在能量曲线,状态密度和边界分子轨道的分析.
主要成果:
- 在水性环境中,激发状态的6-MF有利于分子间质子转移 (ESInterPT),而不是分子内质子转移 (ESIntraPT).
- 在ESInterPT过程中,抗氧化活性得到增强,如密度状态和边界分子轨道所示.
- 基托形式的6-MF对COX-2表现出有利的结合能量,与TYR385等关键残留物相互作用,表明具有抗炎作用.
- MD模拟证实了醇/基-6-MF-COX-2复合物的稳定性.
结论:
- 这项研究阐明了6-MF抗氧化和抗炎性能的基础上的光物理机制.
- ESInterPT被认为是水性介质中增强抗氧化活性的关键机制.
- 6-MF,特别是其型,通过抑制COX-2表现出作为抗炎剂的潜力.
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