SAMHD1 restricts HIV-1 infection in resting CD4(+) T cells.

SAMHD1 restricts HIV-1 infection in resting CD4(+) T cells.
复制标题

DOI:
10.1038/nm.2964
复制
发表时间:
2012-11
期刊:
影响因子:
82.9
通讯作者:
--
中科院分区:
医学1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

与活化的CD 4 + T细胞不同,静息的CD 4 + T细胞对生产性HIV-1感染具有高度抗性。在HIV-1进入后的早期,一个主要的阻滞限制了进入的病毒基因组的逆转录。在这里,我们表明,脱氧核苷三磷酸三磷酸水解酶SAMHD 1阻止HIV-1 RNA在静息的CD 4 + T细胞的逆转录。SAMHD 1在外周血中循环的静息CD 4 + T细胞中大量表达,并驻留在淋巴器官中。未刺激的CD 4 + T细胞中对感染的早期限制被HIV-1或HIV-2病毒体克服,其中病毒Vpx分别被人工或天然包装,或通过添加外源脱氧核苷。在携带Vpx的HIV成功感染之前,Vpx介导的SAMHD 1蛋白酶体降解和细胞内脱氧核苷酸池升高。来自SAMHD 1沉默后的健康供体或来自SAMHD 1无义突变纯合子的Aicardi-Goutières综合征患者的静息CD 4 + T细胞允许HIV-1感染。因此,SAMHD 1对体内大量非循环CD 4 + T细胞中的HIV-1感染施加了有效的限制。SAMHD 1的扩增不足以释放病毒后代,这意味着在HIV复制的后期阶段存在其他障碍。总之,这些发现可能揭示干扰大流行性HIV-1的免疫逃避和T细胞免疫病理学的新方法。
Unlike activated CD4+ T cells, resting CD4+ T cells are highly resistant to productive HIV-1 infection. Early after HIV-1 entry, a major block limits reverse transcription of incoming viral genomes. Here we show that the deoxynucleoside triphosphate triphosphohydrolase SAMHD1 prevents reverse transcription of HIV-1 RNA in resting CD4+ T cells. SAMHD1 is abundantly expressed in resting CD4+ T cells circulating in peripheral blood and residing in lymphoid organs. The early restriction to infection in unstimulated CD4+ T cells is overcome by HIV-1 or HIV-2 virions into which viral Vpx is artificially or naturally packaged, respectively, or by addition of exogenous deoxynucleosides. Vpx-mediated proteasomal degradation of SAMHD1 and elevation of intracellular deoxynucleotide pools precede successful infection by Vpx-carrying HIV. Resting CD4+ T cells from healthy donors following SAMHD1 silencing or from a patient with Aicardi-Goutières syndrome homozygous for a nonsense mutation in SAMHD1 were permissive for HIV-1 infection. Thus, SAMHD1 imposes an effective restriction to HIV-1 infection in the large pool of noncycling CD4+ T cells in vivo. Bypassing SAMHD1 was insufficient for the release of viral progeny, implicating other barriers at later stages of HIV replication. Together, these findings may unveil new ways to interfere with the immune evasion and T cell immunopathology of pandemic HIV-1.
DOI: 10.1016/j.chom.2009.01.009
发表时间: 2009-03-19
影响因子: 30.3
作者:
Goffinet, Christine;Allespach, Ina;Keppler, Oliver T.
通讯作者: Keppler, Oliver T.
DOI: 10.1038/nature10623
发表时间: 2011-12-15
期刊: NATURE
影响因子: 64.8
作者:
Goldstone, David C.;Ennis-Adeniran, Valerie;Webb, Michelle
通讯作者: Webb, Michelle
隐藏在明显的视线中:艾滋病毒如何逃避先天的免疫反应。
DOI: 10.1016/j.cell.2011.09.010
发表时间: 2011-10-14
期刊: Cell
影响因子: 64.5
作者:
Manel N;Littman DR
通讯作者: Littman DR
DOI: 10.1371/journal.ppat.1002425
发表时间: 2011-12
期刊: PLoS pathogens
影响因子: 6.7
作者:
Berger A;Sommer AF;Zwarg J;Hamdorf M;Welzel K;Esly N;Panitz S;Reuter A;Ramos I;Jatiani A;Mulder LC;Fernandez-Sesma A;Rutsch F;Simon V;König R;Flory E
通讯作者: Flory E
DOI: 10.1073/pnas.0607414104
发表时间: 2007-01-16
影响因子: 11.1
作者:
Goffinet, Christine;Allespach, Ina;Keppler, Oliver T.
通讯作者: Keppler, Oliver T.