Graft-versus-host disease is independent of innate signaling pathways triggered by pathogens in host hematopoietic cells.
Graft-versus-host disease is independent of innate signaling pathways triggered by pathogens in host hematopoietic cells.
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DOI:
10.4049/jimmunol.1002965
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发表时间:
2011-01-01
期刊:
影响因子:
--
通讯作者:
Shlomchik WD
中科院分区:
文献类型:
--
作者:
Li H;Matte-Martone C;Tan HS;Venkatesan S;McNiff J;Demetris AJ;Jain D;Lakkis F;Rothstein D;Shlomchik WD
Graft-versus-host disease (GVHD) is initiated by antigen-presenting cells (APCs) that prime alloreactive donor T cells. In anti-pathogen responses antigen-bearing APCs receive signals though pattern-recognition receptors (PRRs), including TLRs, which induce the expression of costimulatory molecules and production of inflammatory cytokines, which mold the adaptive T cell response. However, in allogeneic stem cell transplantation (alloSCT), there is no specific pathogen, alloantigen is ubiquitous and signals that induce APC maturation are undefined. To investigate APC activation in GVHD, we used recipient mice with hematopoietic cells genetically deficient in pathways critical for APC maturation in models in which host APCs are absolutely required. Strikingly, CD8 and CD4-mediated GVHD were similar whether host APCs were wild type or deficient in MyD88, TRIF or MyD88 and TRIF, which excludes essential roles for TLRs and IL-1β, the key product of inflammasome activation. Th1 differentiation was if anything augmented when APCs were MyD88/TRIF−/− and T cell production of IFN-γ did not require host IL-12. GVHD was also intact when APCs lacked the type I IFN receptor, which amplifies APC activation pathways that induce type I IFNs. Thus in GVHD alloreactive T cells can be activated when pathways critical for anti-pathogen T cell responses are impaired.
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影响因子:
56.9
作者:
Blander, JM;Medzhitov, R
通讯作者:
Medzhitov, R
DOI:
10.1084/jem.20060376
发表时间:
2006-08-07
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
通讯作者:
--
影响因子:
30.5
作者:
Buerckstuemmer, Tilmann;Baumann, Christoph;Superti-Furga, Giulio
通讯作者:
Superti-Furga, Giulio
影响因子:
3.7
作者:
Abplanalp, Allison L.;Morris, Ian R.;Berton, Michael T.
通讯作者:
Berton, Michael T.
DOI:
10.1084/jem.20050338
发表时间:
2005-07-18
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Christensen SR;Kashgarian M;Alexopoulou L;Flavell RA;Akira S;Shlomchik MJ
通讯作者:
Shlomchik MJ