卢铁-β-环极氨酸超分子复合物的计算和实验分析:对结构动力学和相位溶解性的洞察
Pramod Kumar1, Vijay Kumar Bhardwaj1, Pravin Shende2
1Structural Bioinformatics Lab, Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (CSIR-IHBT), Palampur, HP 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India.
概括
修改后的环极素,特别是HP-β-CD-1,有效地封装了难溶的黄素 (LuT),增强了其治疗潜力. 计算模拟证实HP-β-CD-1是氨酸复合的最佳宿主分子.
科学领域:
- 药理学和药物输送 药理学和药物输送
- 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:
- 氨酸 (LuT) 是一种具有治疗潜力的生物活性分子,但其不良溶解性限制了其应用.
- 环极素 (CDs) 广泛用于提高难溶性药物的可溶性和生物可用性.
- 了解LuT在CD中的结构稳定性和相互作用,对于开发有效的基于LuT的配方至关重要.
研究的目的:
- 为了研究氨酸 (LuT) 与原生和修饰的β-环极素 (β-CDs) 的结构稳定性和纳入复合物形成.
- 为了确定最有效的循环二烯衍生物来增强LuT的溶解性和治疗疗效.
- 为设计具有改进的主机-客机复合能力的新型环氧德克斯衍生物提供结构性见解.
主要方法:
- 分子力学 (MM) 和量子力学 (QM) 模拟用于结构动力学分析.
- 微秒时间尺度分子动力学 (MD) 模拟用于研究LuT-CD相互作用.
- 使用MM-PBSA和雨抽样模拟进行了具有约束力的自由能源计算.
- 在顶部包含复合体上进行了QM计算 (wB97X-D/6-311+G,d,p).
- 计算结果与实验阶段溶解性分析进行了验证.
主要成果:
- 赫普塔基斯-O-(2-基) -β-CD (HP-β-CD) 和二-O-甲基-β-CD (DM-β-CD) 通过MM-PBSA对LuT显示出良好的结合亲和力.
- 衍生选发现2-HP-β-CD (HP-β-CD-1) 与HP-β-CD相比具有更高的结合自由能量.
- 质量机制计算证实了质量机制结果,证实了结合性相互作用.
- HP-β-CD-1在改善LuT溶解度方面表现出最高的有效性,与实验数据保持一致.
结论:
- 惠普-β-CD-1是最有效的洞膜分子,可与素 (LuT) 形成含有复合物,显著提高其溶解性.
- 计算方法,包括MD模拟和QM计算,为LuT-CD复杂化提供了有价值的结构见解.
- 这项研究为开发先进的HP-β-CD衍生物铺平了道路,用于增强客分子的封装,优化药物输送系统.
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