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Interleukin-27 inhibition of HIV-1 involves an intermediate induction of type I interferon
Blood ( IF 20.3 ) Pub Date : 2009-08-27 , DOI: 10.1182/blood-2009-03-211540
Teresa Greenwell-Wild 1 , Nancy Vázquez , Wenwen Jin , Zoila Rangel , Peter J Munson , Sharon M Wahl
Affiliation  

Infection of CD4(+) chemokine coreceptor(+) targets by HIV is aided and abetted by the proficiency of HIV in eliminating or neutralizing host cell-derived defensive molecules. Among these innate protective molecules, a family of intracellular apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like (APOBEC) cytidine deaminases, is constitutively expressed but inactivated by HIV viral infectivity factor. The ability of interferon-alpha (IFN-alpha) to augment cytidine deaminases offered the possibility that the balance between virus and target cell might be altered in favor of the host. Further characterization of transcriptional profiles induced by IFN-alpha using microarrays, with the intention to identify and dissociate retroviral countermaneuvers from associated toxicities, revealed multiple molecules with suspected antiviral activity, including IL-27. To establish whether IFN-alpha toxicity might be sidestepped through the use of downstream IL-27 against HIV, we examined whether IL-27 directly regulated cytidine deaminases. Although IL-27 induces APOBECs, it does so in a delayed fashion. Dissecting the underlying regulatory events uncovered an initial IL-27-dependent induction of IFN-alpha and/or IFN-beta, which in turn, induces APOBEC3, inhibited by IFN-alpha/beta receptor blockade. In addition to macrophages, the IL-27-IFN-alpha connection is operative in CD4(+) T cells, consistent with an IFN-alpha-dependent pathway underlying host cell defense to HIV.

中文翻译:

白细胞介素 27 对 HIV-1 的抑制涉及 I 型干扰素的中间诱导

艾滋病毒对 CD4(+) 趋化因子辅助受体 (+) 目标的感染是艾滋病毒在消除或中和宿主细胞衍生的防御分子方面的熟练程度的辅助和教唆。在这些先天保护分子中,细胞内载脂蛋白 B mRNA 编辑酶家族催化多肽样 (APOBEC) 胞苷脱氨酶组成型表达,但被 HIV 病毒感染因子灭活。干扰素-α (IFN-α) 增强胞苷脱氨酶的能力提供了可能改变病毒和靶细胞之间的平衡以有利于宿主的可能性。使用微阵列对 IFN-α 诱导的转录谱进行进一步表征,目的是识别逆转录病毒对抗策略并将其与相关毒性分离,揭示了多个具有疑似抗病毒活性的分子,包括 IL-27。为了确定是否可以通过使用下游 IL-27 对抗 HIV 来避免 IFN-α 毒性,我们检查了 IL-27 是否直接调节胞苷脱氨酶。尽管 IL-27 诱导 APOBEC,但它以延迟的方式进行。剖析潜在的监管事件发现了初始 IL-27 依赖诱导的 IFN-α 和/或 IFN-β,进而诱导 APOBEC3,被 IFN-α/β 受体阻滞抑制。除了巨噬细胞,IL-27-IFN-α 连接在 CD4(+) T 细胞中也起作用,这与宿主细胞对 HIV 的防御的 IFN-α 依赖性通路一致。它以延迟的方式这样做。剖析潜在的监管事件发现了初始 IL-27 依赖诱导的 IFN-α 和/或 IFN-β,进而诱导 APOBEC3,被 IFN-α/β 受体阻滞抑制。除了巨噬细胞,IL-27-IFN-α 连接在 CD4(+) T 细胞中也起作用,这与宿主细胞对 HIV 的防御的 IFN-α 依赖性通路一致。它以延迟的方式这样做。剖析潜在的监管事件发现了初始 IL-27 依赖诱导的 IFN-α 和/或 IFN-β,进而诱导 APOBEC3,被 IFN-α/β 受体阻滞抑制。除了巨噬细胞,IL-27-IFN-α 连接在 CD4(+) T 细胞中也起作用,这与宿主细胞对 HIV 的防御的 IFN-α 依赖性通路一致。
更新日期:2009-08-27
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