Innate immune sensing of HIV-1 by dendritic cells.

Innate immune sensing of HIV-1 by dendritic cells.
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DOI:
10.1016/j.chom.2012.10.002
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发表时间:
2012-10-18
影响因子:
30.3
通讯作者:
Luban J
Luban J
中科院分区:
医学1区
文献类型:
--
作者:
Luban J

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在大多数HIV-1感染者中检测到HIV-1特异性抗体和CD 8+细胞毒性T细胞。然而,艾滋病毒-1感染并未根除。导致未能建立杀菌免疫反应的原因可能是抗原呈递树突状细胞(DC)在急性感染期间无法感知HIV-1,因此无法有效地引发幼稚的HIV-1特异性T细胞。最近的研究结果与DC表达的先天免疫因子,包括SAMHD 1,TREX 1和TRIM 5,提供了一个分子基础,了解为什么DC不能充分感知这种致命病原体的入侵,并建议实验方法,以提高T细胞引发HIV-1的预防性疫苗接种方案。
HIV-1-specific antibodies and CD8+ cytotoxic T cells are detected in most HIV-1-infected people. Yet, HIV-1 infection is not eradicated. Contributing to the failure to mount a sterilizing immune response may be the inability of antigen-presenting dendritic cells (DCs) to sense HIV-1 during acute infection, and thus unable to effectively prime naïve, HIV-1-specific T cells. Recent findings related to DC-expressed innate immune factors, including SAMHD1, TREX1, and TRIM5, provide a molecular basis for understanding why DCs fail to adequately sense invasion by this deadly pathogen and suggest experimental approaches to improve T cell priming to HIV-1 in prophylactic vaccination protocols.
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