有效地发现了针对HIV逆转录酶的Tyr181Cys变体的强效抗HIV药物
William L Jorgensen1, Mariela Bollini, Vinay V Thakur
1Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States. william.jorgensen@yale.edu
Journal of the American Chemical Society
|August 23, 2011
概括
新的非核类逆转录酶抑制剂 (NNRTIs) 克服了HIV-1抗性突变. 计算机建模指导了对野生型和突变的HIV菌株有效的强效NNRTIs的设计.
科学领域:
- 药用化学 医学化学
- 病毒学 病毒学
- 计算化学计算化学
背景情况:
- 非核类逆转录酶抑制剂 (NNRTIs) 对艾滋病毒治疗至关重要.
- 现有的NNRTIs,如胺基烯胺,对野生型HIV-1具有强烈活性,但对具有Tyr181Cys (Y181C) 突变的菌株失败.
- 分子建模表明,Tyr181作为抵抗的原因是固体阻碍.
研究的目的:
- 通过计算设计新型NNRTI,对野生类型和Y181C突变的HIV-1有效.
- 为了克服在修改替代剂时观察到的降低功效,以避免Tyr181相互作用.
主要方法:
- 使用的自由能量扰动 (FEP) 计算蛋白质抑制剂结合亲和力.
- 在氧和金胺环上进行了FEP替代剂扫描.
- 根据计算预测,在氧环上加入一个诺维尼尔组.
主要成果:
- 开发了新型的NNRTI,其抗野生型HIV-1的强度低于10nM.
- 对携带Y181C突变的HIV-1菌株取得了强烈的活性 (小于10nM).
- 确定了关键的结构修改,包括对提高疗效至关重要的诺维尼尔组.
结论:
- 计算药物设计,特别是FEP,在演变的NNRTI中是有效的,以克服药物耐药性突变.
- 以建模为指导的替代剂的战略性修改可以恢复和增强抗病毒功效.
- 开发的NNRTI代表了治疗HIV-1感染的有希望的候选人,包括耐药变体.
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