Selective inhibition of the West Nile virus methyltransferase by nucleoside analogs.

Selective inhibition of the West Nile virus methyltransferase by nucleoside analogs.
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DOI:
10.1016/j.antiviral.2012.12.012
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发表时间:
2013-03
期刊:
影响因子:
7.6
通讯作者:
Li, Hongmin
Li, Hongmin
中科院分区:
医学2区
文献类型:
--
作者:
Chen, Hui;Liu, Lihui;Jones, Susan A.;Banavali, Nilesh;Kass, Jorden;Li, Zhong;Zhang, Jing;Kramer, Laura D.;Ghosh, Arun K.;Li, Hongmin

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黄病毒甲基转移酶(MTase)以S - 腺苷 - L - 甲硫氨酸(SAM)作为甲基供体,依次对病毒RNA帽的N7和2’ - O位置进行甲基化(GpppA - RNA→m7GpppA - RNA→m7GpppAm - RNA)。我们在此报道了一系列新型核苷类似物的合成及生物学评价。其中两种化合物能够有效且竞争性地抑制西尼罗河病毒(WNV)甲基转移酶,半数抑制浓度(IC50)值在微摩尔范围内,更重要的是,它们不抑制人甲基转移酶。这些化合物还能够抑制西尼罗河病毒在细胞培养中的复制。
The flavivirus methyltransferase (MTase) sequentially methylates the N7 and 2’-O positions of the viral RNA cap (GpppA-RNA→m7GpppA-RNA→m7GpppAm-RNA), using S-adenosyl-L-methionine (SAM) as a methyl donor. We report here the synthesis and biological evaluation of a series of novel nucleoside analogs. Two of these compounds can effectively and competitively inhibit the WNV MTase with IC50 values in micromolar range and, more importantly, do not inhibit human MTase. The compounds can also suppress the WNV replication in cell culture.
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