The TIGIT/CD226 axis regulates human T cell function.
The TIGIT/CD226 axis regulates human T cell function.
复制标题
DOI:
10.4049/jimmunol.1103627
复制
发表时间:
2012-04-15
期刊:
影响因子:
--
通讯作者:
Hafler DA
中科院分区:
文献类型:
--
作者:
Lozano E;Dominguez-Villar M;Kuchroo V;Hafler DA
TIGIT is a newly identified receptor expressed on T cells that binds to CD155 on the dendritic cell surface driving them to a more tolerogenic phenotype. Given that TIGIT contains an ITIM motif in its intracellular domain and considering the potential importance of the TIGIT/CD226 pathway in human autoimmune disease, we investigated the specific role of TIGIT in human CD4+ T cells. Using an agonistic anti-TIGIT mAb, we demonstrate a direct inhibitory effect on T cell proliferation with a decrease in expression of T-bet, GATA3, IRF4 and RORc with inhibition of cytokine production, predominately IFNγ. Knockdown of TIGIT expression by shRNA resulted in an increase of both T-bet and IFNγ mRNA and protein expression with concomitant decrease in IL-10 expression. Increases in IFNγ with TIGIT knockdown could be overcome by blocking CD226 signaling indicating that TIGIT exerts immunosuppressive effects by competing with CD226 for the same CD155 ligand. These data demonstrate that TIGIT can inhibit T cell functions by competing with CD226 and can also directly inhibit T cells in a T cell intrinsic manner. Our results provide evidence for a novel role of this alternative co-stimulatory pathway in regulating human T cell responses associated with autoimmune disease.
登录
查看更多内容
影响因子:
32.4
作者:
Vijayakrishnan, L;Slavik, JM;Kuchroo, VK
通讯作者:
Kuchroo, VK
DOI:
10.1056/nejmoa1003466
发表时间:
2010-08-19
期刊:
The New England journal of medicine
影响因子:
--
作者:
Hodi FS;O'Day SJ;McDermott DF;Weber RW;Sosman JA;Haanen JB;Gonzalez R;Robert C;Schadendorf D;Hassel JC;Akerley W;van den Eertwegh AJ;Lutzky J;Lorigan P;Vaubel JM;Linette GP;Hogg D;Ottensmeier CH;Lebbé C;Peschel C;Quirt I;Clark JI;Wolchok JD;Weber JS;Tian J;Yellin MJ;Nichol GM;Hoos A;Urba WJ
通讯作者:
Urba WJ
影响因子:
5
作者:
Booth, David R.;Heard, Robert N.;Haines, Jonathan
通讯作者:
Haines, Jonathan
影响因子:
5
作者:
Hafler, J. P.;Maier, L. M.;Cooper, J. D.;Plagnol, V.;Hinks, A.;Simmonds, M. J.;Stevens, H. E.;Walker, N. M.;Healy, B.;Howson, J. M. M.;Maisuria, M.;Duley, S.;Coleman, G.;Gough, S. C. L.;Worthington, J.;Kuchroo, V. K.;Wicker, L. S.;Todd, J. A.
通讯作者:
Todd, J. A.
影响因子:
24.5
作者:
Masson, D;Jarry, A;Denis, MG
通讯作者:
Denis, MG