PMID- 25458315 OWN - NLM STAT- MEDLINE DCOM- 20150305 LR - 20181202 IS - 1872-9142 (Electronic) IS - 0161-5890 (Linking) VI - 63 IP - 2 DP - 2015 Feb TI - Adenosine A2A receptor, a potential valuable target for controlling reoxygenated DCs-triggered inflammation. PG - 559-65 AB - Dendritic cells (DCs) exposed to various oxygen tensions under physiopathological conditions are the critical immune cells linking innate and adaptive immunity. We have previously demonstrated that reoxygenation of hypoxia-differentiated DCs triggers complete DCs activation and inflammatory responses, so restraining the activation of reoxygenated DCs is important to suppress inflammatory responses in diseases caused by oxygen redelivery such as ischemia-reperfusion injury. In the current study, we showed that reoxygenation of hypoxia-differentiated DCs led to predominant expression of high levels of adenosine receptor A2AR on reoxygenated DCs as compared to those on hypoxic or normoxic DCs. Agonist CGS21680 targeting A2AR could effectively inhibit the maturation and activation of reoxygenated DCs through downregulating the expression of MHC class II molecules and CD86. In response to CGS21680 treatment, reoxygenated DCs exhibited a decrease in proinflammatory cytokines IL-1beta, IL-6 and TNF-alpha, and an increase in immune-regulatory cytokine TGF-beta. These data suggest the critical role of A2AR signaling pathway in inhibiting the maturation and proinflammatory function of reoxygenated DCs, thereby proposing A2AR as a potential valuable target for controlling reoxygenated DCs-triggered inflammation. FAU - Liu, Chunmei AU - Liu C AD - Department of Immunology, Shandong University School of Medicine, Jinan 250012, Shandong, PR China FAU - Shang, Qianwen AU - Shang Q FAU - Bai, Yang AU - Bai Y FAU - Guo, Chun AU - Guo C FAU - Zhu, Faliang AU - Zhu F FAU - Zhang, Lining AU - Zhang L FAU - Wang, Qun AU - Wang Q LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Mol Immunol JT - Molecular immunology JID - 7905289 RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 0 (Phenethylamines) RN - 0 (RNA, Messenger) RN - 0 (Receptor, Adenosine A2A) RN - 120225-54-9 (2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine) RN - K72T3FS567 (Adenosine) RN - S88TT14065 (Oxygen) SB - IM MH - Adenosine/analogs & derivatives/pharmacology MH - Animals MH - Cell Differentiation/drug effects/genetics MH - Cytokines/metabolism MH - Dendritic Cells/drug effects/*metabolism MH - Female MH - Inflammation/genetics/*metabolism/*pathology MH - Inflammation Mediators/metabolism MH - Mice, Inbred C57BL MH - Models, Biological MH - *Molecular Targeted Therapy MH - Oxygen/*pharmacology MH - Phenethylamines/pharmacology MH - Phenotype MH - RNA, Messenger/genetics/metabolism MH - Receptor, Adenosine A2A/genetics/*metabolism MH - Signal Transduction/drug effects/genetics MH - Up-Regulation/drug effects EDAT- 2014/12/03 06:00 MHDA- 2015/03/07 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/05/26 00:00 [received] PHST- 2014/09/22 00:00 [revised] PHST- 2014/10/12 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/03/07 06:00 [medline] AID - S0161-5890(14)00277-6 [pii] AID - 10.1016/j.molimm.2014.10.012 [doi] PST - ppublish SO - Mol Immunol. 2015 Feb;63(2):559-65. doi: 10.1016/j.molimm.2014.10.012.