广谱小分子抑制剂向弗拉维病毒NS5甲基转移酶的SAM结合部位
Subodh Kumar Samrat1, Qamar Bashir1, Yiding Huang1
1Department of Pharmacology and Toxicology, R Ken Coit College of Pharmacy, The University of Arizona, 1703 E Mabel St, Tucson, Arizona 85721-0207, United States.
ACS infectious diseases
|June 22, 2023
概括
研究人员确定了两种新型化合物NSC 111552和288387,它们抑制了弗拉维病毒甲基转移酶活性. 这些潜在的宽频抑制剂在治疗登革热和寨卡病毒等感染方面表现有前途.
科学领域:
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
- 生物化学 生物化学
背景情况:
- 弗拉维病毒感染 (登革热,西尼罗热,黄热病,寨卡病毒) 是一个日益严重的全球健康问题.
- 对于大多数黄状病毒,没有FDA批准的抗病毒药物,因此需要广泛的抑制剂.
- 该NS5甲基转移酶 (MTase) 是一个保存和有前途的药物标跨 flaviviruses.
研究的目的:
- 开发一种针对弗拉维病毒甲基转移酶抑制剂的高通量选试验.
- 为了识别和描述flavivirus NS5 MTase的新型抑制剂.
- 评估已识别的化合物作为广泛的抗病毒药物的潜力.
主要方法:
- 开发了一种使用FL-NAH选NS5MTase抑制剂的光极化试验.
- 确定并描述了两个候选抑制剂NSC 111552和288387.7.
- 执行功能测定,结合性研究,基于细胞的复制测定,对接和突变发生,以验证抑制剂.
主要成果:
- NSC 111552和288387抑制了DENV3 MTase,其微分子IC50值较低.
- 化合物证明直接与DENV3 MTase结合,具有较低的微分子亲和力.
- 这些抑制剂在没有细胞毒性的基于细胞的测试中显著降低了寨卡病毒复制.
结论:
- NSC 111552和288387是弗拉维病毒甲基转移酶的有效抑制剂.
- 这些化合物代表了广谱弗拉维病毒药物开发的有希望的候选人.
- 已识别的抑制剂与NS5MTase的SAM结合口袋结合.
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