Analysis of adhesion molecules, target cells, and role of IL-2 in human FOXP3+ regulatory T cell suppressor function.
Analysis of adhesion molecules, target cells, and role of IL-2 in human FOXP3+ regulatory T cell suppressor function.
复制标题
DOI:
10.4049/jimmunol.0803827
复制
发表时间:
2009-03-01
期刊:
影响因子:
--
通讯作者:
Shevach EM
中科院分区:
文献类型:
--
作者:
Tran DQ;Glass DD;Uzel G;Darnell DA;Spalding C;Holland SM;Shevach EM
FOXP3+ regulatory T cells (Tregs) are central to the maintenance of self-tolerance and immune homeostasis. The mechanisms of action and cellular targets for Treg mediated suppression remain controversial. The critical adhesion molecules utilized by Tregs for the interaction with their target cells have not been well characterized. We show that human CD4+FOXP3+CD25hi cells (hTregs) suppress the activation of mouse responders as efficiently as mouse Tregs. LFA-1 (CD11a/CD18) on the hTregs is critical for their suppressor function, since suppression can be reversed with blocking anti-hCD11a or -hCD18 mAb. Tregs from patients with LFA-1 deficiency fail to suppress human and mouse responders. Mouse CD4+ T cells deficient in ICAM-1 can be suppressed by hTregs, indicating that the hTregs target mouse DCs through the binding of human LFA-1 to mouse ICAM-1. Co-culture of mouse DCs with hTregs, but not hTregs from LFA-1 deficient patients, prevented the upregulation of CD80/CD86 on the DCs and their capacity to activate responder T cells. Lastly, IL-2 is not required for hTreg suppressor function under optimal stimulatory condition and IL-2 consumption plays no role in hTreg-mediated suppression. Taken together, one of the mechanisms of Treg-mediated suppression functions across species and mediates an LFA-1/ICAM-1 dependent interaction between Tregs and DCs.
登录
查看更多内容
DOI:
10.1084/jem.193.11.1303
发表时间:
2001-06-04
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Dieckmann D;Plottner H;Berchtold S;Berger T;Schuler G
通讯作者:
Schuler G
影响因子:
4.4
作者:
Misra, N;Bayry, J;Kaveri, SV
通讯作者:
Kaveri, SV
影响因子:
30.5
作者:
Fallarino, F;Grohmann, U;Puccetti, P
通讯作者:
Puccetti, P
影响因子:
4.4
作者:
DiPaolo, Richard J.;Brinster, Carine;Shevach, Ethan M.
通讯作者:
Shevach, Ethan M.
影响因子:
4.4
作者:
Nakamura, K;Kitani, A;Strober, W
通讯作者:
Strober, W