Novel CD8+ Treg suppress EAE by TGF-beta- and IFN-gamma-dependent mechanisms.
Novel CD8+ Treg suppress EAE by TGF-beta- and IFN-gamma-dependent mechanisms.
复制标题
DOI:
10.1002/eji.200939441
复制
发表时间:
2009-12
影响因子:
5.4
通讯作者:
Weiner, Howard L.
中科院分区:
文献类型:
--
作者:
Chen, Mei-Ling;Yan, Bo-Shiun;Kozoriz, Deneen;Weiner, Howard L.
Although CD8+ Treg-mediated suppression has been described, CD8+ Treg remain poorly characterized. Here we identify a novel subset of CD8+ Treg that express latency-associated peptide (LAP) on their cell surface (CD8+LAP+ cells) and exhibit regulatory activity in vitro and in vivo. Only a small fraction of CD8+LAP+ cells express Foxp3 or CD25, although the expression levels of Foxp3 for these cells are higher than their LAP− counterparts. In addition to TGF-β, CD8+LAP+ cells produce IFN-γ, and these cells suppress EAE that is dependent on both TGF-β and IFN-γ. In an adoptive co-transfer model, CD8+LAP+ cells suppress myelin oligodendrocyte glycoprotein (MOG)-specific immune responses by inducing or expanding Foxp3+ cells and by inhibiting proliferation and IFN-γ production in vivo. Furthermore, in vivo neutralization of IFN-γ and studies with IFN-γ-deficient mice demonstrate an important role for IFN-γ production in the function of CD8+LAP+ cells. Our findings identify the underlying mechanisms that account for the immunoregulatory activity of CD8+ T cells and suggest that induction or amplification of CD8+LAP+ cells may be a therapeutic strategy to help control autoimmune processes.
登录
查看更多内容
影响因子:
3.3
作者:
DUONG, TT;STLOUIS, J;STREJAN, GH
通讯作者:
STREJAN, GH
影响因子:
15.9
作者:
BALASHOV, KE;KHOURY, SJ;WEINER, HL
通讯作者:
WEINER, HL
影响因子:
30.5
作者:
Fallarino, F;Grohmann, U;Puccetti, P
通讯作者:
Puccetti, P
影响因子:
32.4
作者:
Gorelik, L;Flavell, RA
通讯作者:
Flavell, RA
影响因子:
15.9
作者:
Guillonneau, Carole;Hill, Marcelo;Anegon, Ignacio
通讯作者:
Anegon, Ignacio