IFN-γ-producing CD4+ T cells promote experimental cerebral malaria by modulating CD8+ T cell accumulation within the brain.
IFN-γ-producing CD4+ T cells promote experimental cerebral malaria by modulating CD8+ T cell accumulation within the brain.
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DOI:
10.4049/jimmunol.1200688
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发表时间:
2012-07-15
期刊:
影响因子:
--
通讯作者:
Couper KN
中科院分区:
文献类型:
--
作者:
Villegas-Mendez A;Greig R;Shaw TN;de Souza JB;Gwyer Findlay E;Stumhofer JS;Hafalla JC;Blount DG;Hunter CA;Riley EM;Couper KN
It is well established that IFN-γ is required for the development of experimental cerebral malaria (ECM) during Plasmodium berghei ANKA infection of C57BL/6 mice. To date, however, the temporal and tissue-specific cellular sources of IFN-γ during P. berghei ANKA infection have not been investigated and it is not known if IFN-γ production by a single cell type in isolation can induce cerebral pathology. In this study, using IFN-γ reporter mice, we show that NK cells dominate the IFN-γ response during the early stages of infection in the brain, but not in the spleen, before being replaced by CD4+ and CD8+ T cells. Importantly, we demonstrate that IFN-γ producing CD4+ T cells, but not innate or CD8+ T cells, can promote the development of ECM in normally resistant IFN-γ−/− mice infected with P. berghei ANKA. Adoptively transferred wild-type (WT) CD4+ T cells accumulate within the spleen, lung and brain of IFN-γ−/− mice and induce ECM through active IFN-γ secretion, which increases accumulation of endogenous IFN-γ−/− CD8+ T cells within the brain. Depletion of endogenous IFN-γ−/− CD8+ T cells abrogated the ability of WT CD4+ T cells to promote ECM. Finally we show that IFN-γ production specifically by CD4+ T cells is sufficient to induce expression of CXCL9 and CXCL10 within the brain, providing a mechanistic basis for the enhanced CD8+ T cell accumulation. These observations demonstrate, for the first time, the importance of and pathways by which IFN-γ-producing CD4+ T cells promote the development of ECM during P. berghei ANKA infection.
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影响因子:
64.8
作者:
Bettelli, E;Carrier, YJ;Kuchroo, VK
通讯作者:
Kuchroo, VK
影响因子:
4.4
作者:
Belnoue, E;Kayibanda, M;Rénia, L
通讯作者:
Rénia, L
影响因子:
56.9
作者:
GRAU, GE;FAJARDO, LF;VASSALLI, P
通讯作者:
VASSALLI, P
DOI:
10.1073/pnas.86.14.5572
发表时间:
1989-07-01
影响因子:
11.1
作者:
GRAU, GE;HEREMANS, H;VASSALLI, P
通讯作者:
VASSALLI, P
影响因子:
6
作者:
Lovegrove, Fiona E.;Gharib, Sina A.;Liles, W. Conrad
通讯作者:
Liles, W. Conrad