Novel Broad Spectrum Inhibitors Targeting the Flavivirus Methyltransferase.

Novel Broad Spectrum Inhibitors Targeting the Flavivirus Methyltransferase.
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DOI:
10.1371/journal.pone.0130062
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Li H
Li H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Brecher M;Chen H;Liu B;Banavali NK;Jones SA;Zhang J;Li Z;Kramer LD;Li H

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黄病毒甲基转移酶(MTase)是一种必需的酶,其使用S-腺苷-L-甲硫氨酸(SAM)作为甲基供体,依次甲基化病毒RNA帽的N7和2 '-O位置。我们在这里报告的小分子化合物,puridine结合到SAM的黄病毒MTase的结合位点,并抑制其功能,被确定通过使用虚拟筛选。在体外甲基化实验表明显着的MTase抑制这些化合物中的13个,最有效的化合物显示亚微摩尔抑制活性。活性最高的化合物显示出对多种黄病毒MTase蛋白的广谱活性。这些化合物中的两种还表现出低细胞毒性,并在基于细胞的测定中有效地抑制病毒复制,提供了对黄病毒MTase抑制的进一步结构洞察。
The flavivirus methyltransferase (MTase) is an essential enzyme that sequentially methylates the N7 and 2’-O positions of the viral RNA cap, using S-adenosyl-L-methionine (SAM) as a methyl donor. We report here that small molecule compounds, which putatively bind to the SAM-binding site of flavivirus MTase and inhibit its function, were identified by using virtual screening. In vitro methylation experiments demonstrated significant MTase inhibition by 13 of these compounds, with the most potent compound displaying sub-micromolar inhibitory activity. The most active compounds showed broad spectrum activity against the MTase proteins of multiple flaviviruses. Two of these compounds also exhibited low cytotoxicity and effectively inhibited viral replication in cell-based assays, providing further structural insight into flavivirus MTase inhibition.
DOI: 10.1371/journal.pone.0076900
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
Chen H;Zhou B;Brecher M;Banavali N;Jones SA;Li Z;Zhang J;Nag D;Kramer LD;Ghosh AK;Li H
通讯作者: Li H
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