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J Immunol. 2011 Apr 1;186(7):4140-6. doi: 10.4049/jimmunol.1002614. Epub 2011 Mar 2.

Translational control of NKT cell cytokine production by p38 MAPK.

Author information

1
Division of Immunobiology, Department of Medicine, University of Vermont, Burlington, VT 05405, USA.

Abstract

NKT cells are known to rapidly produce a large amount of cytokines upon activation. Although a number of signaling pathways that regulate the development of NKT cells have been identified, the signaling pathways involved in the regulation of NKT cell cytokine production remain unclear. In this study, we show that the p38 MAPK pathway is dispensable for the development of NKT cells. However, NKT cell cytokine production and NKT-mediated liver damage are highly dependent on activation of this pathway. p38 MAPK does not substantially affect cytokine gene expression in NKT cells, but it regulates the synthesis of cytokines through the Mnk-eIF4E pathway. Thus, in addition to gene expression, translational regulation by p38 MAPK could be a novel mechanism that contributes to the overall production of cytokine by NKT cells.

PMID:
21368234
PMCID:
PMC3697841
DOI:
10.4049/jimmunol.1002614
[Indexed for MEDLINE]
Free PMC Article

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