PMID- 30357820 OWN - NLM STAT- MEDLINE DCOM- 20190805 LR - 20231213 IS - 1365-2567 (Electronic) IS - 0019-2805 (Print) IS - 0019-2805 (Linking) VI - 156 IP - 2 DP - 2019 Feb TI - Plasticity of antimicrobial and phagocytic programs in human macrophages. PG - 164-173 LID - 10.1111/imm.13013 [doi] AB - Macrophage (MPhi) polarization is triggered during the innate immune response to defend against microbial pathogens, but can also contribute to disease pathogenesis. In a previous study, we found that interleukin-15 (IL-15) -derived classically activated macrophages (M1 MPhi) have enhanced antimicrobial activity, whereas IL-10-derived alternatively activated macrophages (M2 MPhi) were highly phagocytic but lacked antimicrobial activity. Given that the ability to modulate MPhi polarization from M2 MPhi to M1 MPhi may promote a more effective immune response to infection, we investigated the plasticity of these MPhi programs. Addition of IL-10 to M1 MPhi induced M2-like MPhi, but IL-15 had little effect on M2 MPhi. We determined the set of immune receptors that are present on M2 MPhi, elucidating two candidates for inducing plasticity of M2 MPhi, Toll-like receptor 1 (TLR1) and interferongamma (IFN-gamma) receptor 1. Stimulation of M2 MPhi with TLR2/1 ligand (TLR2/1L) or IFN-gamma alone was not sufficient to alter M2 MPhi phenotype or function. However, co-addition of TLR2/1L and IFN-gamma re-educated M2 MPhi towards the M1 MPhi phenotype, with a decrease in the phagocytosis of lipids and mycobacteria, as well as recovery of the vitamin-D-dependent antimicrobial pathway compared with M2 MPhi maintained in polarizing conditions. Similarly, treatment of M2 MPhi with both TLR2/1L and anti-IL-10 neutralizing antibodies led to polarization to the M1-like MPhi phenotype and function. Together, our data demonstrate an approach to induce MPhi plasticity that provides the potential for re-educating MPhi function in human mycobacterial disease to promote host defense and limit pathogenesis. CI - (c) 2018 John Wiley & Sons Ltd. FAU - Montoya, Dennis AU - Montoya D AD - Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA, USA. FAU - Mehta, Manali AU - Mehta M AD - Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. FAU - Ferguson, Benjamin G AU - Ferguson BG AD - Department of Neurology, College of Medicine, University of Arizona, Tucson, AZ, USA. FAU - Teles, Rosane M B AU - Teles RMB AD - Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. FAU - Krutzik, Stephan R AU - Krutzik SR AD - Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. FAU - Cruz, Daniel AU - Cruz D AD - Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. FAU - Pellegrini, Matteo AU - Pellegrini M AD - Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA, USA. FAU - Modlin, Robert L AU - Modlin RL AUID- ORCID: 0000-0003-4720-031X AD - Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. LA - eng GR - R01 AI022553/AI/NIAID NIH HHS/United States GR - R01 AR040312/AR/NIAMS NIH HHS/United States GR - NIH3P50AR06302/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20181111 PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Cytokines) RN - 0 (Receptors, Interferon) RN - 0 (TLR1 protein, human) RN - 0 (TLR2 protein, human) RN - 0 (Toll-Like Receptor 1) RN - 0 (Toll-Like Receptor 2) MH - Cytokines/immunology MH - Female MH - Humans MH - *Macrophage Activation MH - Macrophages/*immunology/pathology MH - Male MH - Mycobacterium Infections/*immunology/pathology MH - *Phagocytosis MH - Receptors, Interferon/immunology MH - Toll-Like Receptor 1/*immunology MH - Toll-Like Receptor 2/*immunology MH - Interferon gamma Receptor PMC - PMC6328994 OTO - NOTNLM OT - antimicrobial OT - macrophage OT - mycobacteria OT - phagocytosis OT - polarization EDAT- 2018/10/26 06:00 MHDA- 2019/08/06 06:00 PMCR- 2020/02/01 CRDT- 2018/10/26 06:00 PHST- 2018/08/15 00:00 [received] PHST- 2018/10/01 00:00 [accepted] PHST- 2018/10/26 06:00 [pubmed] PHST- 2019/08/06 06:00 [medline] PHST- 2018/10/26 06:00 [entrez] PHST- 2020/02/01 00:00 [pmc-release] AID - IMM13013 [pii] AID - 10.1111/imm.13013 [doi] PST - ppublish SO - Immunology. 2019 Feb;156(2):164-173. doi: 10.1111/imm.13013. Epub 2018 Nov 11.