PMID- 31316511 OWN - NLM STAT- MEDLINE DCOM- 20201021 LR - 20210312 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 10 DP - 2019 TI - Plasminogen and the Plasminogen Receptor, Plg-R(KT), Regulate Macrophage Phenotypic, and Functional Changes. PG - 1458 LID - 10.3389/fimmu.2019.01458 [doi] LID - 1458 AB - Inflammation resolution is an active process that functions to restore tissue homeostasis. Clearance of apoptotic leukocytes by efferocytosis at inflammatory sites plays an important role in inflammation resolution and induces remarkable macrophage phenotypic and functional changes. Here, we investigated the effects of deletion of either plasminogen (Plg) or the Plg receptor, Plg-R(KT), on the resolution of inflammation. In a murine model of pleurisy, the numbers of total mononuclear cells recruited to the pleural cavity were significantly decreased in both Plg(-/-) and Plg-R(KT)(-/-) mice, a response associated with decreased levels of the chemokine CCL2 in pleural exudates. Increased percentages of M1-like macrophages were determined in pleural lavages of Plg(-/-) and Plg-R(KT)(-/-) mice without significant changes in M2-like macrophage percentages. In vitro, Plg and plasmin (Pla) increased CD206/Arginase-1 expression and the levels of IL-10/TGF-beta (M2 markers) while decreasing IFN/LPS-induced M1 markers in murine bone-marrow-derived macrophages (BMDMs) and human macrophages. Furthermore, IL4-induced M2-like polarization was defective in BMDMs from both Plg(-/-) and Plg-R(KT)(-/-) mice. Mechanistically, Plg and Pla induced transient STAT3 phosphorylation, which was decreased in Plg(-/-) and Plg-R(KT)(-/-) BMDMs after IL-4 or IL-10 stimulation. The extents of expression of CD206 and Annexin A1 (important for clearance of apoptotic cells) were reduced in Plg(-/-) and Plg-R(KT)(-/-) macrophage populations, which exhibited decreased phagocytosis of apoptotic neutrophils (efferocytosis) in vivo and in vitro. Taken together, these results suggest that Plg and its receptor, Plg-R(KT), regulate macrophage polarization and efferocytosis, as key contributors to the resolution of inflammation. FAU - Vago, Juliana P AU - Vago JP AD - Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States. AD - Center for Drug Research and Development, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil. FAU - Sugimoto, Michelle A AU - Sugimoto MA AD - Center for Drug Research and Development, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil. AD - Barts and The London School of Medicine, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom. FAU - Lima, Katia M AU - Lima KM AD - Department of Clinical and Toxicological Analyses, School of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Brazil. FAU - Negreiros-Lima, Graziele L AU - Negreiros-Lima GL AD - Department of Clinical and Toxicological Analyses, School of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Brazil. FAU - Baik, Nagyung AU - Baik N AD - Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States. FAU - Teixeira, Mauro M AU - Teixeira MM AD - Center for Drug Research and Development, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil. FAU - Perretti, Mauro AU - Perretti M AD - Barts and The London School of Medicine, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom. FAU - Parmer, Robert J AU - Parmer RJ AD - Department of Medicine, Veterans Administration San Diego Healthcare System, University of California, San Diego, San Diego, CA, United States. FAU - Miles, Lindsey A AU - Miles LA AD - Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States. FAU - Sousa, Lirlandia P AU - Sousa LP AD - Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States. AD - Center for Drug Research and Development, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil. AD - Department of Clinical and Toxicological Analyses, School of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Brazil. LA - eng GR - I01 BX003933/BX/BLRD VA/United States GR - R01 HL081046/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20190628 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (PLG-R(KT) protein, mouse) RN - 0 (Receptors, Cell Surface) RN - 9001-91-6 (Plasminogen) SB - IM MH - Animals MH - Cell Movement MH - Humans MH - Macrophages/*immunology MH - Male MH - Mice, Transgenic MH - Neutrophils/immunology MH - Phagocytosis MH - Phenotype MH - Plasminogen/genetics/*immunology MH - Pleurisy/*immunology MH - Receptors, Cell Surface/genetics/*immunology PMC - PMC6611080 OTO - NOTNLM OT - efferocytosis OT - macrophages reprogramming OT - plasminogen receptor KT OT - plasminogen system OT - resolution of inflammation EDAT- 2019/07/19 06:00 MHDA- 2020/10/22 06:00 PMCR- 2019/01/01 CRDT- 2019/07/19 06:00 PHST- 2019/03/07 00:00 [received] PHST- 2019/06/10 00:00 [accepted] PHST- 2019/07/19 06:00 [entrez] PHST- 2019/07/19 06:00 [pubmed] PHST- 2020/10/22 06:00 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2019.01458 [doi] PST - epublish SO - Front Immunol. 2019 Jun 28;10:1458. doi: 10.3389/fimmu.2019.01458. eCollection 2019.