Wild-type and YMDD mutant murine leukemia virus reverse transcriptases are resistant to 2',3'-dideoxy-3'-thiacytidine.

Wild-type and YMDD mutant murine leukemia virus reverse transcriptases are resistant to 2',3'-dideoxy-3'-thiacytidine.
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野生型和 YMDD 突变型鼠白血病病毒逆转录酶对 2,3-二脱氧-3-硫胞苷具有抗性。

DOI:
10.1128/jvi.74.14.6669-6674.2000
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发表时间:
2000
影响因子:
5.4
通讯作者:
Pathak,VK
Pathak,VK
中科院分区:
医学2区
文献类型:
--
作者:
Halvas,EK;Svarovskaia,ES;Freed,EO;Pathak,VK

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抗逆转录病毒核苷类似物2′,3 ′-双脱氧-3 ′-硫代胞苷(3 TC)是一种有效的野生型人类免疫缺陷病毒1型(HIV-1)逆转录酶(RT)抑制剂。位于RT活性位点的HIV-1 YMDD基序中残基184处的甲硫氨酸至缬氨酸或甲硫氨酸至异亮氨酸取代导致对3 TC的高水平抗性。我们试图确定3 TC是否可以抑制野生型小鼠白血病病毒(MLV)的复制,该病毒在MLV RT的YVDD活性位点基序处含有V223,以及V223 M、V223 I、V223 A和V223 S突变型RT。令人惊讶的是,MLV RT的野生型和所有四种V223突变体对3 TC具有高度抗性。这些结果表明,MLV RT的YVDD基序以外的决定簇赋予对3 TC的高水平抗性。因此,相似RT之间的结构差异可能导致对抗逆转录病毒核苷类似物的敏感性大相径庭。
The antiretroviral nucleoside analog 2′,3′-dideoxy-3′-thiacytidine (3TC) is a potent inhibitor of wild-type human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT). A methionine-to-valine or methionine-to-isoleucine substitution at residue 184 in the HIV-1 YMDD motif, which is located at the RT active site, leads to a high level of resistance to 3TC. We sought to determine whether 3TC can inhibit the replication of wild-type murine leukemia virus (MLV), which contains V223 at the YVDD active site motif of the MLV RT, and of the V223M, V223I, V223A, and V223S mutant RTs. Surprisingly, the wild type and all four of the V223 mutants of MLV RT were highly resistant to 3TC. These results indicate that determinants outside the YVDD motif of MLV RT confer a high level of resistance to 3TC. Therefore, structural differences among similar RTs might result in widely divergent sensitivities to antiretroviral nucleoside analogs.
内源逆转录酶测定揭示了 M184V 和其他耐药突变的组合在与核苷类似物三磷酸相互作用中的协同作用。
DOI: --
发表时间: 1998
影响因子: 5.6
作者:
Y. Quan;Zhengxian Gu;Zhengxian Gu;Xuguang Li;Xuguang Li;Chen Liang;M. Parniak;M. Parniak;M. A. Wainberg;M. A. Wainberg
通讯作者: M. A. Wainberg
人类免疫缺陷病毒 1 型蛋白酶对鼠白血病病毒跨膜包膜蛋白的切割:基质突变的反显性抑制
DOI: 10.1128/jvi.72.12.9621-9627.1998
发表时间: 1998
影响因子: 5.4
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通讯作者: E. Freed
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发表时间: 1997-09-11
影响因子: 158.5
作者:
Gulick, RM;Mellors, JW;Chodakewitz, JA
通讯作者: Chodakewitz, JA
DOI: 10.1128/jvi.72.5.4116-4126.1998
发表时间: 1998-05-01
影响因子: 5.4
作者:
Kiernan, RE;Ono, A;Freed, EO
通讯作者: Freed, EO
DOI: 10.1016/0014-5793(96)00747-8
发表时间: 1996-08-12
期刊: FEBS LETTERS
影响因子: 3.5
作者:
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通讯作者: Hizi, A