PMID- 24744866 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140418 LR - 20211021 IS - 2051-817X (Print) IS - 2051-817X (Electronic) IS - 2051-817X (Linking) VI - 1 IP - 7 DP - 2013 Dec 1 TI - Evidence for a prosurvival role of alpha-7 nicotinic acetylcholine receptor in alternatively (M2)-activated macrophages. PG - e00189 LID - 10.1002/phy2.189 [doi] LID - e00189 AB - Recent observations in endothelial cells and macrophages indicate that nicotinic acetylcholine receptors (nAChRs) are potential novel players in mechanisms linked to atherogenesis. In macrophages, alpha7nAChR mediates anti-inflammatory actions and contributes to regulation of cholesterol flux and phagocytosis. Considering that macrophage apoptosis is a key process throughout all stages of atherosclerotic lesion development, in the present study, we examined for the first time the impact of alpha7nAChR expression and function in macrophage survival and apoptosis using in vitro polarized (M1 and M2) bone marrow-derived macrophages (BMDMs) from wild-type and alpha7nAChR knockout mice. Our findings show that stimulation of alpha7nAChR results in activation of the STAT3 prosurvival pathway and protection of macrophages from endoplasmic reticulum (ER) stress-induced apoptosis. These actions are rather selective for M2 BMDMs and are associated to activation of the JAK2/STAT3 axis. Remarkably, these effects are completely lost in M2 macrophages lacking alpha7nAChR. FAU - Lee, Robert H AU - Lee RH AD - Department of Physiology and Pharmacology, Center for Diabetes and Endocrine Research, University of Toledo College of Medicine, Health Science Campus, 3000 Arlington Av, Toledo, 43614, Ohio, USA. FAU - Vazquez, Guillermo AU - Vazquez G AD - Department of Physiology and Pharmacology, Center for Diabetes and Endocrine Research, University of Toledo College of Medicine, Health Science Campus, 3000 Arlington Av, Toledo, 43614, Ohio, USA. LA - eng GR - R01 HL111877/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20131226 PL - United States TA - Physiol Rep JT - Physiological reports JID - 101607800 PMC - PMC3970735 OTO - NOTNLM OT - Macrophage polarization OT - macrophage survival OT - alpha7 nicotinic acetylcholine receptor EDAT- 2014/04/20 06:00 MHDA- 2014/04/20 06:01 PMCR- 2013/12/26 CRDT- 2014/04/19 06:00 PHST- 2013/11/21 00:00 [received] PHST- 2013/11/26 00:00 [accepted] PHST- 2014/04/19 06:00 [entrez] PHST- 2014/04/20 06:00 [pubmed] PHST- 2014/04/20 06:01 [medline] PHST- 2013/12/26 00:00 [pmc-release] AID - phy2189 [pii] AID - 10.1002/phy2.189 [doi] PST - epublish SO - Physiol Rep. 2013 Dec 26;1(7):e00189. doi: 10.1002/phy2.189. eCollection 2013 Dec 1.