Moderate influence of human APOBEC3F on HIV-1 replication in primary lymphocytes.

Moderate influence of human APOBEC3F on HIV-1 replication in primary lymphocytes.
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人 APOBEC3F 对原代淋巴细胞中 HIV-1 复制的中等影响。

DOI:
10.1128/jvi.02630-09
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发表时间:
2010
影响因子:
5.4
通讯作者:
Simon,Viviana
Simon,Viviana
中科院分区:
医学2区
文献类型:
--
作者:
Mulder,LubbertusCF;Ooms,Marcel;Majdak,Susan;Smedresman,Jordan;Linscheid,Caitlin;Harari,Ariana;Kunz,Andrea;Simon,Viviana

文献摘要

相似文献

多种 APOBEC3 蛋白在 HIV-1 靶细胞中表达,但在内源水平表达时它们各自对病毒抑制的贡献仍然很大程度上未知。我们使用选择性对抗 APOBEC3G (A3G) 但不对抗 APOBEC3F (A3F) 的 HIV NL4-3 突变体来剖析 A3F 对抑制原代人淋巴细胞(外周血单核细胞 [PBMC])中 HIV-1 复制的相对贡献。这种 HIV Vif 突变体在 PBMC 中的复制与野生型病毒类似,表明 A3F 对这些细胞中 HIV 限制的作用是有限的。在 PMBC 供体中发现的不同 A3F 变体表现出与野生型 A3F 相当的活性或较低的活性。最后,PBMC 中内源 A3F mRNA 和蛋白表达水平显着低于 A3G。我们的结果表明,A3F 中和对于 HIV-1 在原代人 T 淋巴细胞中的复制来说是可有可无的。
Multiple APOBEC3 proteins are expressed in HIV-1 target cells, but their individual contributions to viral suppression when expressed at endogenous levels remain largely unknown. We used an HIV NL4-3 mutant that selectively counteracts APOBEC3G (A3G) but not APOBEC3F (A3F) to dissect the relative contribution of A3F to the inhibition of HIV-1 replication in primary human lymphocytes (peripheral blood mononuclear cells [PBMCs]). This HIV Vif mutant replicated similarly to wild-type virus in PBMCs, suggesting that the effect of A3F on HIV restriction in these cells is limited. The different A3F variants found in PMBC donors displayed either comparable activity or less activity than wild-type A3F. Lastly, the endogenous A3F mRNA and protein expression levels in PBMCs were considerably lower than those of A3G. Our results suggest that A3F neutralization is dispensable for HIV-1 replication in primary human T-lymphocytes.