| First Author | Imanishi T | Year | 2007 |
| Journal | J Immunol | Volume | 178 |
| Issue | 11 | Pages | 6715-9 |
| PubMed ID | 17513716 | Mgi Jnum | J:147852 |
| Mgi Id | MGI:3842287 | Doi | 10.4049/jimmunol.178.11.6715 |
| Citation | Imanishi T, et al. (2007) Cutting edge: TLR2 directly triggers Th1 effector functions. J Immunol 178(11):6715-9 |
| abstractText | Toll-like receptors recognize pathogen-associated molecular patterns, activate innate immunity, and consequently modulate adaptive immunity in response to infections. TLRs are also expressed on T cells, and it has been shown that T cell activation is modulated by TLR ligands. However, the functions of TLRs on Th1 and Th2 effector cells and the molecular mechanisms underlying TLR-mediated activation are not fully understood. We analyzed TLR functions and downstream signaling events in both effector T cells. In mouse Th1 cells the stimulation by TLR2 but not by other TLRs directly induced IFN-gamma production, cell proliferation, and cell survival without TCR stimulation, and these effects were greatly enhanced by IL-2 or IL-12 through the enhanced activation of MAPKs. In contrast, no TLR affected the function of effector Th2 cells. These results identify TLR2 as a new specific activator of Th1 cell function and imply the involvement in Th1-mediated responses. |
