Mechanism of Anti-Human Immunodeficiency Virus Activity of β-
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-6-Cyclopropylamino-2′,3′-Didehydro-2′,3′-Dideoxyguanosine
作者:Adrian S. Ray、Brenda I. Hernandez-Santiago、Judy S. Mathew、Eisuke Murakami、Carey Bozeman、Meng-Yu Xie、Ginger E. Dutschman、Elizabeth Gullen、Zhenjun Yang、Selwyn Hurwitz、Yung-Chi Cheng、Chung K. Chu、Harold McClure、Raymond F. Schinazi、Karen S. Anderson
DOI:10.1128/aac.49.5.1994-2001.2005
日期:2005.5
nucleoside analogs that target human immunodeficiency virus (HIV), a 6-cyclopropyl-substituted prodrug of 2',3'-didehydro-2',3'-dideoxyguanosine (cyclo-d4G) was synthesized, and its cellular metabolism, antiviral activity, and pharmacokinetic behavior were studied. Cyclo-d4G had selective anti-HIV activity in primary blood mononuclear cells (PBMCs), effectively inhibiting the LAI strain of HIV-1 by
为了更好地了解针对人免疫缺陷病毒(HIV)的平面不饱和核苷类似物的核糖环中氧的重要性,它是2',3'-didehydro-2',3'-dideoxyguanosine的6-环丙基取代的前药(合成了环-d4G),并研究了其细胞代谢,抗病毒活性和药代动力学行为。Cyclo-d4G在原代血液单核细胞(PBMC)中具有选择性的抗HIV活性,在1.1 +/- 0.1 microM时可有效抑制50%的HIV-1 LAI株,而在84.5 microM时可抑制50%的细胞活力。PBMC中的抗病毒活性不受184位甲硫氨酸突变为缬氨酸的突变或病毒逆转录酶中与胸苷相关的突变的明显影响。亮氨酸74突变为缬氨酸,赖氨酸65突变为精氨酸具有轻度至中度耐药性(高达5倍)。描绘细胞代谢和环d4G激活机制的研究表明,在腺苷/腺苷酸脱氨酶抑制剂2'-脱氧coformycin存在的情况下,抑制病毒复制的能力降低,这表明抗病毒活性是由于其代谢为2'