Low levels of SIV infection in sooty mangabey central memory CD⁴⁺ T cells are associated with limited CCR5 expression.
Low levels of SIV infection in sooty mangabey central memory CD⁴⁺ T cells are associated with limited CCR5 expression.
复制标题
烟熏芒果中央记忆CD⁴⁺T细胞中SIV感染水平的低水平与CCR5表达有限有关。
作者:
Naturally SIV-infected sooty mangabeys (SMs) do not progress to AIDS despite high-level virus replication. We previously showed that the fraction of CD4+CCR5+ T-cells is lower in SMs compared to humans and macaques. Here we found that, after in vitro stimulation, SM CD4+ T-cells fail to up-regulate CCR5, and that this phenomenon is more pronounced in CD4+ central-memory T-cells (TCM). CD4+ T-cell activation was similarly uncoupled from CCR5 expression in SMs in vivo during (i) acute SIV infection and (ii) following antibody-mediated CD4+ T-cell depletion. Remarkably, CD4+ TCM of SMs that express low levels of CCR5 demonstrated reduced susceptibility to SIV infection both in vivo and in vitro when compared to CD4+ TCM of RMs. These data suggest that low CCR5 expression on SM CD4+ T-cells favors the preservation of CD4+ T-cell homeostasis and promotes an AIDS-free status by protecting CD4+ TCM from direct virus infection.
登录
查看更多内容
影响因子:
82.9
作者:
通讯作者:
--
影响因子:
4.4
作者:
Mummidi, Srinivas;Adams, Lisa M.;Ahnja, Sunil K.
通讯作者:
Ahnja, Sunil K.
影响因子:
9.2
作者:
Palacios, E;Digilio, L;Grant, RM
通讯作者:
Grant, RM
影响因子:
20.3
作者:
Pandrea, Ivona;Apetrei, Cristian;Silvestri, Guido
通讯作者:
Silvestri, Guido
DOI:
10.1084/jem.20070567
发表时间:
2007-09-03
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Okoye A;Meier-Schellersheim M;Brenchley JM;Hagen SI;Walker JM;Rohankhedkar M;Lum R;Edgar JB;Planer SL;Legasse A;Sylwester AW;Piatak M Jr;Lifson JD;Maino VC;Sodora DL;Douek DC;Axthelm MK;Grossman Z;Picker LJ
通讯作者:
Picker LJ