title: The immunobiology of prostanoid receptor signaling in connecting innate and adaptive immunity.
abstract: Prostanoids, including prostaglandins (PGs), thromboxanes (TXs), and prostacyclins, are synthesized from arachidonic acid (AA) by the action of Cyclooxygenase (COX) enzymes. They are bioactive inflammatory lipid mediators that play a key role in immunity and immunopathology. Prostanoids exert their effects on immune and inflammatory cells by binding to membrane receptors that are widely expressed throughout the immune system and act at multiple levels in innate and adaptive immunity. The immunoregulatory role of prostanoids results from their ability to regulate cell-cell interaction, antigen presentation, cytokine production, cytokine receptor expression, differentiation, survival, apoptosis, cell-surface molecule levels, and cell migration in both autocrine and paracrine manners. By acting on immune cells of both systems, prostanoids and their receptors have great impact on immune regulation and play a pivotal role in connecting innate and adaptive immunity. This paper focuses on the immunobiology of prostanoid receptor signaling because of their potential clinical relevance for various disorders including inflammation, autoimmunity, and tumorigenesis. We mainly discuss the effects of major COX metabolites, PGD2, PGE2, their signaling during dendritic cell (DC)-natural killer (NK) reciprocal crosstalk, DC-T cell interaction, and subsequent consequences on determining crucial aspects of innate and adaptive immunity in normal and pathological settings.
authors.affiliation: Faculty of Dental Medicine, University of Monastir, 5019 Monastir, Tunisia.
authors.forename: Hedi
authors.initials: H
authors.lastname: Harizi
mesh_terms: D056704:Adaptive Immunity / Q000235:genetics*; D003713:Dendritic Cells / Q000276:immunology / Q000378:metabolism; D015232:Dinoprostone / Q000235:genetics / Q000276:immunology*; D006801:Humans; D007113:Immunity, Innate / Q000235:genetics*; D007249:Inflammation / Q000276:immunology / Q000378:metabolism; D007694:Killer Cells, Natural / Q000276:immunology; D015230:Prostaglandin D2 / Q000235:genetics / Q000276:immunology*; D011453:Prostaglandins; D011982:Receptors, Prostaglandin / Q000276:immunology* / Q000378:metabolism; D015398:Signal Transduction / Q000276:immunology
chemical_list: D011453:Prostaglandins; D011982:Receptors, Prostaglandin; C501562:prostanoid D receptor 1, human; D015232:Dinoprostone; D015230:Prostaglandin D2
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