评估抗登革热化合物对日本脑炎病毒RNA依赖RNA聚合酶的抑制潜力:一个in silico研究
Leena H Bajrai1,2, Thamir A Alandijany1,3, Isra Alsaady1,3
1Special Infectious Agents Unit-BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
Journal of biomolecular structure & dynamics
|October 9, 2023
概括
研究人员选了抗登革热药物与日本脑炎病毒 (JEV) 的RNA依赖RNA聚合酶 (RdRp). 三种化合物显示出高结合亲和力,表明日本脑炎 (JE) 的潜在新疗法.
科学领域:
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
- 计算化学的计算化学
背景情况:
- 日本脑炎 (JE) 是一种严重的神经感染,由日本脑炎病毒 (JEV) 引起.
- JEV非结构5 (NS5) 蛋白的RNA依赖RNA聚合酶 (RdRp) 域是一个关键的治疗标.
- 目前对JE的治疗方法有限,需要新的治疗策略.
研究的目的:
- 评估抗登革热药物对抗JEV RdRp的抗病毒潜力.
- 通过计算方法确定日本脑炎治疗的有前途的候选药物.
- 评估选定化合物与JEV RdRp.的结合亲和力和稳定性.
主要方法:
- 对抗登革热药物库的高通量虚拟选与JEV RdRp.
- 分子动力学 (MD) 建模以模拟药物蛋白相互作用.
- MM/GBSA分析以计算结合的自由能量和排名化合物疗效.
主要成果:
- 三种抗登革热化合物 (57409246,70683874,44577154) 显示出与JEV RdRp具有显著的结合 afinity.
- 化合物57409246显示出最高的初始结合亲和力 (-72.96 kcal/mol).
- MD模拟和MM/GBSA分析证实了所有三种化合物的稳定结合和高亲和力,其中70683874和57409246具有最低的结合自由能量 (分别为-97.58和-96.38 kcal/mol),超过了原生配体ATP (-65.64 kcal/mol).
结论:
- 该研究确定了三种抗登革热分子作为日本脑炎的潜在治疗剂.
- 这些化合物与原生配体相比,对JEV RdRp表现出更高的结合亲和力.
- 需要进一步的体外和体内研究来验证这些发现,并探索它们在JE治疗中的临床适用性.
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