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Prostanoids and their receptors that modulate dendritic cell‐mediated immunity
Author(s) -
Gualde Norbert,
Harizi Hedi
Publication year - 2004
Publication title -
immunology and cell biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.999
H-Index - 104
eISSN - 1440-1711
pISSN - 0818-9641
DOI - 10.1111/j.0818-9641.2004.01251.x
Subject(s) - autocrine signalling , microbiology and biotechnology , immune system , receptor , lipid signaling , paracrine signalling , chemokine , biology , cytokine , immunology , chemistry , inflammation , biochemistry
Dendritic cells (DC) are essential for the initiation of immune responses by capturing, processing and presenting antigens to T cells. In addition to their important role as professional APC, they are able to produce immunosuppressive and pro‐inflammatory prostanoids from arachidonic acid (AA) by the action of cyclooxygenase (COX) enzymes. In an autocrine and paracrine fashion, the secreted lipid mediators subsequently modulate the maturation, cytokine production, Th‐cell polarizing ability, chemokine receptor expression, migration, and apoptosis of these extremely versatile APC. The biological actions of prostanoids, including their effects on APC‐mediated immunity and acute inflammatory responses, are exerted by G protein‐coupled receptors on plasma membrane. Some COX metabolites act as anti‐inflammatory lipid mediators by binding to nuclear receptors and modulating DC functions. Although the role of cytokines in DC function has been studied extensively, the effects of prostanoids on DC biology have only recently become the focus of investigation. This review summarizes the current knowledge about the role of prostanoids and their receptors in modulating DC function and the subsequent immune responses.