Dexamethasone promotes tolerance in vivo by enriching CD11clo CD40lo tolerogenic macrophages.
Dexamethasone promotes tolerance in vivo by enriching CD11clo CD40lo tolerogenic macrophages.
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DOI:
10.1002/eji.201242468
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发表时间:
2013-01
影响因子:
5.4
通讯作者:
Chen A
中科院分区:
文献类型:
--
作者:
Zheng G;Zhong S;Geng Y;Munirathinam G;Cha I;Reardon C;Getz GS;van Rooijen N;Kang Y;Wang B;Chen A
We previously showed that antigen immunization in the presence of the immunosuppressant dexamethasone (a strategy we termed “suppressed immunization”) could tolerize established recall responses of T cells. However, the mechanism by which dexamethasone acts as a tolerogenic adjuvant has remained unclear. In the present study, we show that in the spleen and peripheral lymph nodes, dexamethasone dose-dependently enriches CD11cloCD40lo macrophages by depleting all other CD11c+CD40+ cells including dendritic cells. The enriched macrophages display a distinct MHC IIloCD86hi phenotype. Upon activation by a recall antigen in vivo, they upregulate IL-10, a classic marker for tolerogenic antigen-presenting cells, and elicit a serum IL-10 response. When presenting a recall antigen in vivo, they do not elicit recall responses of memory T cells, but rather stimulate the expansion of antigen-specific regulatory T cells. Moreover, depletion of CD11cloCD40lo macrophages during suppressed immunization diminishes the latter’s tolerogenic efficacy. These results indicate that dexamethasone acts as a tolerogenic adjuvant partly by enriching the CD11cloCD40lo tolerogenic macrophages.
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DOI:
10.2332/allergolint.r-06-139
发表时间:
2007-09-01
期刊:
Allergology international : official journal of the Japanese Society of Allergology
影响因子:
--
作者:
Sato, Katsuaki;Fujita, Shigeharu
通讯作者:
Fujita, Shigeharu
DOI:
10.1007/978-1-60327-360-2_13
发表时间:
2010-01-01
期刊:
LIPOSOMES: METHODS AND PROTOCOLS, VOL 1
影响因子:
--
作者:
van Rooijen, Nico;Hendrikx, Esther
通讯作者:
Hendrikx, Esther
影响因子:
5.4
作者:
Chen, X;Murakami, T;Howard, DMZ
通讯作者:
Howard, DMZ
DOI:
10.1073/pnas.0800928105
发表时间:
2008-06-03
影响因子:
11.1
作者:
Sauer, Stephan;Bruno, Ludovica;Merkenschlager, Matthias
通讯作者:
Merkenschlager, Matthias
DOI:
10.4049/jimmunol.0901459
发表时间:
2009-10-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Turner MS;Kane LP;Morel PA
通讯作者:
Morel PA