Structural determinants of HIV-1 reverse transcriptase stereoselectivity towards (beta)-L-deoxy- and dideoxy-pyrimidine nucleoside triphosphates: molecular basis for the combination of L-dideoxynucleoside analogs with non-nucleoside inhibitors in anti HIV chemotherapy.

G Maga, M Amacker, U Hübscher, G Gosselin, J L Imbach, C Mathé, A Faraj, J P Sommadossi, S Spadari
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引用次数: 3

Abstract

We have compared the HIV-1 RT mutants containing the single substitutions L100I, K103N, V106A, V179D, Y181I and Y188L, known to confer NNI-resistance in treated patients, to HIV-1 RT wt for their sensitivity towards inhibition by D- and L-deoxy- and dideoxy-nucleoside tiphosphates. The results showed a differential effect of the substitutions on the affinity for both D- and L-enantiomers of deoxy- and dideoxy-nucleoside triphosphates and provide a rationale for the utilization of L-dideoxynucleoside analogs with NNI in combination chemotherapy.

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HIV-1逆转录酶对(β)- l -脱氧和二脱氧嘧啶核苷三磷酸立体选择性的结构决定因素:l -二脱氧核苷类似物与非核苷抑制剂联合抗HIV化疗的分子基础
我们比较了含有L100I、K103N、V106A、V179D、Y181I和Y188L的HIV-1 RT突变体对D-和l -脱氧和二脱氧核苷磷酸抑制的敏感性,这些突变体已知会使治疗患者产生nni耐药。结果表明,取代对脱氧核苷和二脱氧核苷三磷酸的D-和l -对映体的亲和力有不同的影响,并为l -二脱氧核苷类似物与NNI在联合化疗中的应用提供了理论依据。
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