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CD83-stimulated monocytes suppress T-cell immune responses through production of prostaglandin E2.

Abstract：

:CD83 is commonly known as a specific marker for mature dendritic cells. It has been shown to be important for CD4(+) T-cell development in the thymus. However, its function in the peripheral immune system remains enigmatic. Here, we show that CD83 inhibits proliferation and production of IL-2 and IFN-γ by T cells, and the inhibitory effect of CD83 is mediated by monocytes. Prostaglandin E2 (PGE(2)), but not IL-10 or TGF-β, was up-regulated specifically by CD83 in monocytes. Consistent with high levels of PGE(2), expression of COX-2 also was increased upon CD83 treatment. NF-κB activation also is required for induction of PGE(2) by CD83. Finally, application of the COX-2-selective inhibitor NS-398 fully prevented CD83-triggered inhibition of T-cell responses. Our study establishes an immune-regulatory mechanism by CD83 via stimulation of PGE(2) production in monocytes.

journal_name

Proc Natl Acad Sci U S A

journal_title

Proceedings of the National Academy of Sciences of the United States of America

authors

Chen L,Zhu Y,Zhang G,Gao C,Zhong W,Zhang X

doi

10.1073/pnas.1018994108

subject

Has Abstract

pub_date

2011-11-15 00:00:00

pages

18778-83

issue

46

eissn

0027-8424

issn

1091-6490

pii

1018994108

journal_volume

108

pub_type

杂志文章

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