接口水有助于二甲基硫氧化物在模型双机中的交叉和分孔
Samapika Sahu1, Avinash Garg1, Renu Saini1
1Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, India.
Langmuir : the ACS journal of surfaces and colloids
|March 6, 2024
概括
硫酸二甲基 (DMSO) 通过与脂质和水相互作用,促进细胞膜中孔隙的形成,这对于冷保存和药物输送至关重要. 增加的DMSO度降低了孔形成能量,增强了细胞膜的透性.
科学领域:
- 生物物理学的生物物理.
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 了解二甲基硫氧化物 (DMSO) 与细胞膜的相互作用对于冷保存和药物输送至关重要.
- DMSO是一种常见的冷保护剂,其膜运输和孔隙形成机制需要阐明.
研究的目的:
- 研究DMSO在脂质双层中孔隙形成和交叉行为的机制和热力学.
- 阐明DMSO在改变膜性质和促进透中的作用.
主要方法:
- 在不同的DMSO度下,对1,2-dimyristoyl-rac-glycero-3-phosphocholine (DMPC) 双层进行了广泛的全原子分子动力学模拟.
- 雨采样和连锁反应协调方法来计算DMSO交叉和孔隙形成的平均力 (PMF) 的潜力.
主要成果:
- DMSO部分消耗水,并插入脂质头之间,增加膜乱和流动性而不会分解.
- 由于极地与非极地相互作用不利,DMSO交叉遇到障碍,随着DMSO度的增加,这种障碍会减少.
- 接口水有助于DMSO孔隙形成,降低能量屏障,导致透的水-DMSO结构.
结论:
- DMSO通过诱导乱和短暂的毛孔来促进膜透,而水在降低毛孔形成能量方面发挥着关键作用.
- 对DMSO作用机制的洞察力为了解超冷条件下的冷保护剂行为提供了基础.
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