Nature:分享一个开源的药物发现平台,可以实现超大的虚拟筛选

2020-03-11 MedSci原创 MedSci原创

通过使用VirtualFlow,研究人员已经准备好了最大且免费可用的现成的配体库,拥有超过14亿个商业可用的分子。

目前,一种被批准的药物平均需要耗费成本20 - 30亿美元,研发时间超过10年。在某种程度上,这是由于昂贵和耗时的湿实验室实验,初始选中的化合物不够理想,以及在(前)临床阶段的高失败率。

基于结构的虚拟筛选(SBVS)有可能部分解决这些问题。使用SBVS,选出化合物的质量会随着所筛选的化合物数量的增加而提高。

然而,目前为止,虽然已经存在大型复合数据库,但以可访问的、有效和灵活的方式在计算机集群上执行大型SBVSs的能力仍然难以实现。

最近,研究人员设计了VirtualFlow,这是一个高度自动化和通用的开源平台,具有完美的缩放行为,能够准备和有效地筛选超大配体化合物库。VirtualFlow能够使用各种最强大的扩展程序。

通过使用VirtualFlow,研究人员已经准备好了最大且免费可用的现成的配体库,拥有超过14亿个商业可用的分子。为了证明VirtualFlow的强大功能,研究人员筛选了超过10亿个化合物,并发现了KEAP1蛋白质的一个小分子抑制剂(iKeap1),它和KEAP1具有纳米级亲和能力(Kd = 114 nM),并能够干扰KEAP1与转录因子NRF2之间的相互作用。此外,在筛选中,研究人员还发现了一组与KEAP1结合具有亚微摩尔亲和力的结构多样的分子。

这说明了VirtualFlow有潜力访问化学空间的广大区域,并识别对目标蛋白具有高亲和力的结合物。

 

原始出处:

Christoph Gorgulla et al. An open-source drug discovery platform enables ultra-large virtual screens. Nature, 2020; DOI: https://doi.org/10.1038/s41586-020-2117-z

 

 

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    2020-05-20 liye789132251
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    2020-06-09 gj0744
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