Cell death by pyroptosis drives CD4 T-cell depletion in HIV-1 infection.

Cell death by pyroptosis drives CD4 T-cell depletion in HIV-1 infection.
复制标题

DOI:
10.1038/nature12940
复制
发表时间:
2014-01-23
期刊:
影响因子:
64.8
通讯作者:
--
中科院分区:
综合性期刊1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

导致HIV感染宿主的CD4T细胞死亡的途径仍然知之甚少。细胞凋亡被认为是CD4T细胞丢失的主要机制。我们现在发现,caspase-3介导的细胞凋亡只导致了一小部分高效感染细胞的死亡。剩余的95%静止的淋巴CD4T细胞死于caspase-1介导的由流产病毒感染引发的下垂。上睑下垂对应于一种强烈的炎症形式的程序性细胞死亡,胞浆内容物和包括IL-1β在内的促炎细胞因子被释放。因此,这种死亡途径将HIV感染中的两个标志性事件--CD4T细胞枯竭和慢性炎症--联系在一起,并创造了一个恶性循环,濒临死亡的CD4T细胞释放炎症信号,吸引更多细胞死亡。被证明对人类安全的caspase-1抑制剂可以打破这一循环,从而增加了一种新的针对宿主而不是病毒的“抗艾滋病”疗法的可能性。
The pathway causing CD4 T-cell death in HIV-infected hosts remains poorly understood. Apoptosis has been proposed as the key mechanism for CD4 T-cell loss. We now show that caspase-3-mediated apoptosis accounts for the death of only a small fraction of productively infected cells. The remaining >95% of quiescent lymphoid CD4 T-cells die by caspase-1-mediated pyroptosis triggered by abortive viral infection. Pyroptosis corresponds to an intensely inflammatory form of programmed cell death where cytoplasmic contents and pro-inflammatory cytokines including IL-1β, are released. This death pathway thus links the two signature events in HIV infection––CD4 T-cell depletion and chronic inflammation––and creates a vicious pathogenic cycle where dying CD4 T-cells release inflammatory signals that attract more cells to die. This cycle can be broken by caspase-1 inhibitors shown to be safe in humans, raising the possibility of a new class of “anti-AIDS” therapeutics targeting the host rather than the virus.
DOI: 10.3390/v3050586
发表时间: 2011-05
期刊: Viruses
影响因子: --
作者:
Février M;Dorgham K;Rebollo A
通讯作者: Rebollo A
DOI: 10.1038/nm.2964
发表时间: 2012-11
期刊: Nature medicine
影响因子: 82.9
作者:
通讯作者: --
DOI: 10.1073/pnas.94.5.1925
发表时间: 1997-03-04
影响因子: 11.1
作者:
Bleul, CC;Wu, LJ;Mackay, CR
通讯作者: Mackay, CR
DOI: 10.1016/j.cell.2009.05.037
发表时间: 2009-06-12
期刊: Cell
影响因子: 64.5
作者:
Cho YS;Challa S;Moquin D;Genga R;Ray TD;Guildford M;Chan FK
通讯作者: Chan FK
DOI: 10.1016/s1074-7613(01)00217-5
发表时间: 2001-10-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Eckstein, DA;Penn, ML;Goldsmith, MA
通讯作者: Goldsmith, MA