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Grezzi L, Martínez YE, Barrios AA, Díaz Á, Casaravilla C. Characterization of the immunosuppressive environment induced by larval Echinococcus granulosus during chronic experimental infection. Infect Immun 2024; 92:e0027623. [PMID: 38174942 PMCID: PMC10863420 DOI: 10.1128/iai.00276-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 11/27/2023] [Indexed: 01/05/2024] Open
Abstract
The larval stage of Echinococcus granulosus causes the chronic infection known as cystic echinococcosis, deploying strong inhibitory mechanisms on host immune responses. Using experimental intraperitoneal infection in C57BL/6 mice, we carried out an in-depth analysis of the local changes in macrophage populations associated with chronic infection. In addition, we analyzed T cells and relevant soluble mediators. Infected animals showed an increase in local cell numbers, mostly accounted for by eosinophils, T cells, and macrophages. Within macrophage populations, the largest increases in cell numbers corresponded to resident large peritoneal macrophages (LPM). Monocyte recruitment appeared to be active, as judged by the increased number of monocytes and cells in the process of differentiation towards LPM, including small (SPM) and converting peritoneal macrophages (CPM). In contrast, we found no evidence of macrophage proliferation. Infection induced the expression of M2 markers in SPM, CPM, and LPM. It also enhanced the expression of the co-inhibitor PD-L1 in LPM, SPM, and CPM and induced the co-inhibitor PD-L2 in SPM and CPM. Therefore, local macrophages acquire M2-like phenotypes with probable suppressive capacities. Regarding T cells, infection induced an increase in the percentage of CD4+ cells that are PD-1+, which represent a potential target of suppression by PD-L1+/PD-L2+ macrophages. In possible agreement, CD4+ T cells from infected animals showed blunted proliferative responses to in vitro stimulation with anti-CD3. Further evidence of immune suppression in the parasite vicinity arose from the observation of an expansion in FoxP3+ CD4+ regulatory T cells and increases in the local concentrations of the anti-inflammatory cytokines TGF-β and IL-1Ra.
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Affiliation(s)
- Leticia Grezzi
- Laboratorio de Inmunología, Instituto de Química Biológica, Facultad de Ciencias/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
- Área Inmunología, Departamento de Biociencias, Facultad de Química/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Yamila E. Martínez
- Laboratorio de Inmunología, Instituto de Química Biológica, Facultad de Ciencias/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
- Área Inmunología, Departamento de Biociencias, Facultad de Química/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Anabella A. Barrios
- Área Inmunología, Departamento de Biociencias, Facultad de Química/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Álvaro Díaz
- Área Inmunología, Departamento de Biociencias, Facultad de Química/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Cecilia Casaravilla
- Laboratorio de Inmunología, Instituto de Química Biológica, Facultad de Ciencias/Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
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Pérez-Diego M, Angelina A, Martín-Cruz L, de la Rocha-Muñoz A, Maldonado A, Sevilla-Ortega C, Palomares O. Cannabinoid WIN55,212-2 reprograms monocytes and macrophages to inhibit LPS-induced inflammation. Front Immunol 2023; 14:1147520. [PMID: 37006243 PMCID: PMC10060516 DOI: 10.3389/fimmu.2023.1147520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
IntroductionChronic or uncontrolled activation of myeloid cells including monocytes, macrophages and dendritic cells (DCs) is a hallmark of immune-mediated inflammatory disorders. There is an urgent need for the development of novel drugs with the capacity to impair innate immune cell overactivation under inflammatory conditions. Compelling evidence pointed out cannabinoids as potential therapeutic tools with anti-inflammatory and immunomodulatory capacity. WIN55,212-2, a non-selective synthetic cannabinoid agonist, displays protective effects in several inflammatory conditions by mechanisms partially depending on the generation of tolerogenic DCs able to induce functional regulatory T cells (Tregs). However, its immunomodulatory capacity on other myeloid cells such as monocytes and macrophages remains incompletely understood.MethodsHuman monocyte-derived DCs (hmoDCs) were differentiated in the absence (conventional hmoDCs) or presence of WIN55,212-2 (WIN-hmoDCs). Cells were stimulated with LPS, cocultured with naive T lymphocytes and their cytokine production and ability to induce T cell responses were analysed by ELISA or flow cytometry. To evaluate the effect of WIN55,212-2 in macrophage polarization, human and murine macrophages were activated with LPS or LPS/IFNγ, in the presence or absence of the cannabinoid. Cytokine, costimulatory molecules and inflammasome markers were assayed. Metabolic and chromatin immunoprecipitation assays were also performed. Finally, the protective capacity of WIN55,212-2 was studied in vivo in BALB/c mice after intraperitoneal injection with LPS.ResultsWe show for the first time that the differentiation of hmoDCs in the presence of WIN55,212-2 generates tolerogenic WIN-hmoDCs that are less responsive to LPS stimulation and able to prime Tregs. WIN55,212-2 also impairs the pro-inflammatory polarization of human macrophages by inhibiting cytokine production, inflammasome activation and rescuing macrophages from pyroptotic cell death. Mechanistically, WIN55,212-2 induced a metabolic and epigenetic shift in macrophages by decreasing LPS-induced mTORC1 signaling, commitment to glycolysis and active histone marks in pro-inflammatory cytokine promoters. We confirmed these data in ex vivo LPS-stimulated peritoneal macrophages (PMΦs), which were also supported by the in vivo anti-inflammatory capacity of WIN55,212-2 in a LPS-induced sepsis mouse model.ConclusionOverall, we shed light into the molecular mechanisms by which cannabinoids exert anti-inflammatory properties in myeloid cells, which might well contribute to the future rational design of novel therapeutic strategies for inflammatory disorders.
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Affiliation(s)
- Mario Pérez-Diego
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - Alba Angelina
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - Leticia Martín-Cruz
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - Andrés de la Rocha-Muñoz
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
- Autonomous University of Madrid, Madrid, Spain
| | - Angel Maldonado
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - Carmen Sevilla-Ortega
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - Oscar Palomares
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
- *Correspondence: Oscar Palomares,
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Bain CC, Louwe PA, Steers NJ, Bravo‐Blas A, Hegarty LM, Pridans C, Milling SW, MacDonald AS, Rückerl D, Jenkins SJ. CD11c identifies microbiota and EGR2-dependent MHCII + serous cavity macrophages with sexually dimorphic fate in mice. Eur J Immunol 2022; 52:1243-1257. [PMID: 35568024 PMCID: PMC7613339 DOI: 10.1002/eji.202149756] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/11/2022] [Accepted: 05/09/2022] [Indexed: 11/27/2022]
Abstract
The murine serous cavities contain a rare and enigmatic population of short-lived F4/80lo MHCII+ macrophages but what regulates their development, survival, and fate is unclear. Here, we show that mature F4/80lo MHCII+ peritoneal macrophages arise after birth, but that this occurs largely independently of colonization by microbiota. Rather, microbiota specifically regulate development of a subpopulation of CD11c+ cells that express the immunoregulatory cytokine RELM-α, are reliant on the transcription factor EGR2, and develop independently of the growth factor CSF1. Furthermore, we demonstrate that intrinsic expression of RELM-α, a signature marker shared by CD11c+ and CD11c- F4/80lo MHCII+ cavity macrophages, regulates survival and differentiation of these cells in the peritoneal cavity in a sex-specific manner. Thus, we identify a previously unappreciated diversity in serous cavity F4/80lo MHCII+ macrophages that is regulated by microbiota, and describe a novel sex and site-specific function for RELM-α in regulating macrophage endurance that reveals the unique survival challenge presented to monocyte-derived macrophages by the female peritoneal environment.
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Affiliation(s)
- Calum C. Bain
- Queens Medical Research InstituteUniversity of Edinburgh Centre for Inflammation ResearchEdinburghUK
| | - Pieter A. Louwe
- Queens Medical Research InstituteUniversity of Edinburgh Centre for Inflammation ResearchEdinburghUK
| | | | - Alberto Bravo‐Blas
- Institute of Infection, Immunity, and InflammationUniversity of GlasgowGlasgowUK
| | - Lizi M. Hegarty
- Queens Medical Research InstituteUniversity of Edinburgh Centre for Inflammation ResearchEdinburghUK
| | - Clare Pridans
- Queens Medical Research InstituteUniversity of Edinburgh Centre for Inflammation ResearchEdinburghUK
- Simons Initiative for the Developing Brain, Centre for Discovery Brain SciencesUniversity of EdinburghEdinburghUK
| | - Simon W.F. Milling
- Institute of Infection, Immunity, and InflammationUniversity of GlasgowGlasgowUK
| | - Andrew S. MacDonald
- Lydia Becker Institute for Immunology and Infection, School of Biological Sciences, Faculty of Biology, Medicine & HealthUniversity of ManchesterManchesterUK
| | - Dominik Rückerl
- Lydia Becker Institute for Immunology and Infection, School of Biological Sciences, Faculty of Biology, Medicine & HealthUniversity of ManchesterManchesterUK
| | - Stephen J. Jenkins
- Queens Medical Research InstituteUniversity of Edinburgh Centre for Inflammation ResearchEdinburghUK
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McCowan J, Fercoq F, Kirkwood PM, T’Jonck W, Hegarty LM, Mawer CM, Cunningham R, Mirchandani AS, Hoy A, Humphries DC, Jones GR, Hansen CG, Hirani N, Jenkins SJ, Henri S, Malissen B, Walmsley SR, Dockrell DH, Saunders PTK, Carlin LM, Bain CC. The transcription factor EGR2 is indispensable for tissue-specific imprinting of alveolar macrophages in health and tissue repair. Sci Immunol 2021; 6:eabj2132. [PMID: 34797692 PMCID: PMC7612216 DOI: 10.1126/sciimmunol.abj2132] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alveolar macrophages are the most abundant macrophages in the healthy lung where they play key roles in homeostasis and immune surveillance against airborne pathogens. Tissue-specific differentiation and survival of alveolar macrophages rely on niche-derived factors, such as granulocyte-macrophage colony-stimulating factor (GM-CSF) and transforming growth factor–β (TGF-β). However, the nature of the downstream molecular pathways that regulate the identity and function of alveolar macrophages and their response to injury remain poorly understood. Here, we identify that the transcription factor EGR2 is an evolutionarily conserved feature of lung alveolar macrophages and show that cell-intrinsic EGR2 is indispensable for the tissue-specific identity of alveolar macrophages. Mechanistically, we show that EGR2 is driven by TGF-β and GM-CSF in a PPAR-γ–dependent manner to control alveolar macrophage differentiation. Functionally, EGR2 was dispensable for the regulation of lipids in the airways but crucial for the effective handling of the respiratory pathogen Streptococcus pneumoniae. Last, we show that EGR2 is required for repopulation of the alveolar niche after sterile, bleomycin-induced lung injury and demonstrate that EGR2-dependent, monocyte-derived alveolar macrophages are vital for effective tissue repair after injury. Collectively, we demonstrate that EGR2 is an indispensable component of the transcriptional network controlling the identity and function of alveolar macrophages in health and disease.
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Affiliation(s)
- Jack McCowan
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | | | - Phoebe M. Kirkwood
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Wouter T’Jonck
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Lizi M. Hegarty
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Connar M. Mawer
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
| | - Richard Cunningham
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Ananda S. Mirchandani
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Anna Hoy
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
| | - Duncan C. Humphries
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Gareth-Rhys Jones
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Carsten G. Hansen
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Nik Hirani
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Stephen J. Jenkins
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Sandrine Henri
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - Bernard Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - Sarah R. Walmsley
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - David H. Dockrell
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Philippa T. K. Saunders
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
| | - Leo M. Carlin
- Cancer Research UK Beatson Institute, Glasgow, G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Calum C. Bain
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, 47 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4TJ, UK
- Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh BioQuarter, Edinburgh EH16 4UU, UK
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Wachesk CC, Seabra SH, Dos Santos TAT, Trava-Airoldi VJ, Lobo AO, Marciano FR. In vivo biocompatibility of diamond-like carbon films containing TiO 2 nanoparticles for biomedical applications. J Mater Sci Mater Med 2021; 32:117. [PMID: 34460018 PMCID: PMC8405490 DOI: 10.1007/s10856-021-06596-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Hybrid diamond-like carbon (DLC) with incorporated titanium dioxide (TiO2) nanoparticle coatings have low friction coefficient, high wear resistance, high hardness, biocompatibility, and high chemical stability. They could be employed to modify biomedical alloys surfaces for numerous applications in biomedical engineering. Here we investigate for the first time the in vivo inflammatory process of DLC coatings with incorporated TiO2 nanoparticles. TiO2-DLC films were grown on AISI 316 stainless-steel substrates using plasma-enhanced chemical vapor deposition. The coated substrates were implanted in CF1 mice peritoneum. The in vivo cytotoxicity and biocompatibility of the samples were analyzed from macrophage lavage. Analysis in the first weeks after implantation could be helpful to evaluate the acute cytotoxicity generated after a possible inflammatory process. The in vivo results showed no inflammatory process. A significant increase in nitric oxide production on the uncoated substrates was confirmed through cytometry, and the coated substrates demonstrated biocompatibility. The presence of TiO2 nanoparticles enhanced the wound healing activity, due to their astringent and antimicrobial properties. DLC and TiO2-DLC coatings were considered biocompatible, and the presence of TiO2 nanoparticles reduced the inflammatory reactions, increasing DLC biocompatibility.
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Affiliation(s)
- C C Wachesk
- Laboratory of Nanotechnology and Toxicology, Department of Science and Technology, UNIFESP-Federal University of São Paulo, São José dos Campos, São Paulo, SP, Brazil
- Associated Laboratory of Sensors and Materials, INPE-National Institute for Space Research, São José dos Campos, São Paulo, SP, Brazil
| | - S H Seabra
- Technology Laboratory of Biochemistry and Microscopy, UEZO-Universidade Estadual da Zona Oeste, Rio de Janeiro, RJ, Brazil
| | - T A T Dos Santos
- Technology Laboratory of Biochemistry and Microscopy, UEZO-Universidade Estadual da Zona Oeste, Rio de Janeiro, RJ, Brazil
- Laboratory of Cell Biology and Tissue, UENF-State University of Northern Rio de Janeiro, Campos dos Goytacazes, Rio de Janeiro, RJ, Brazil
- Centro Universitário IBMR, Rio de Janeiro, RJ, Brazil
| | - V J Trava-Airoldi
- Associated Laboratory of Sensors and Materials, INPE-National Institute for Space Research, São José dos Campos, São Paulo, SP, Brazil
| | - A O Lobo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science & Engineering Graduate Program, UFPI-Federal University of Piaui, 64049-550, Teresina, PI, Brazil
| | - F R Marciano
- Department of Physics, UFPI-Federal University of Piaui, 64049-550, Teresina, PI, Brazil.
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Hogg C, Panir K, Dhami P, Rosser M, Mack M, Soong D, Pollard JW, Jenkins SJ, Horne AW, Greaves E. Macrophages inhibit and enhance endometriosis depending on their origin. Proc Natl Acad Sci U S A 2021; 118:e2013776118. [PMID: 33536334 PMCID: PMC8017702 DOI: 10.1073/pnas.2013776118] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Macrophages are intimately involved in the pathophysiology of endometriosis, a chronic inflammatory disorder characterized by the growth of endometrial-like tissue (lesions) outside the uterus. By combining genetic and pharmacological monocyte and macrophage depletion strategies we determined the ontogeny and function of macrophages in a mouse model of induced endometriosis. We demonstrate that lesion-resident macrophages are derived from eutopic endometrial tissue, infiltrating large peritoneal macrophages (LpM) and monocytes. Furthermore, we found endometriosis to trigger continuous recruitment of monocytes and expansion of CCR2+ LpM. Depletion of eutopic endometrial macrophages results in smaller endometriosis lesions, whereas constitutive inhibition of monocyte recruitment significantly reduces peritoneal macrophage populations and increases the number of lesions. Reprogramming the ontogeny of peritoneal macrophages such that embryo-derived LpM are replaced by monocyte-derived LpM decreases the number of lesions that develop. We propose a putative model whereby endometrial macrophages are "proendometriosis" while newly recruited monocyte-derived macrophages, possibly in LpM form, are "antiendometriosis." These observations highlight the importance of monocyte-derived macrophages in limiting disease progression.
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Affiliation(s)
- Chloe Hogg
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Kavita Panir
- Centre for Early Life, Warwick Medical School, University of Warwick, CV2 2DX Coventry, United Kingdom
| | - Priya Dhami
- Centre for Early Life, Warwick Medical School, University of Warwick, CV2 2DX Coventry, United Kingdom
| | - Matthew Rosser
- Centre for Early Life, Warwick Medical School, University of Warwick, CV2 2DX Coventry, United Kingdom
| | - Matthias Mack
- Department of Internal Medicine II-Nephrology, University Hospital Regensburg, 93042 Regensburg, Germany
| | - Daniel Soong
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Jeffrey W Pollard
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Stephen J Jenkins
- Centre for Inflammation Research, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Andrew W Horne
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Erin Greaves
- Centre for Early Life, Warwick Medical School, University of Warwick, CV2 2DX Coventry, United Kingdom;
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Bain CC, Gibson DA, Steers NJ, Boufea K, Louwe PA, Doherty C, González-Huici V, Gentek R, Magalhaes-Pinto M, Shaw T, Bajénoff M, Bénézech C, Walmsley SR, Dockrell DH, Saunders PTK, Batada NN, Jenkins SJ. Rate of replenishment and microenvironment contribute to the sexually dimorphic phenotype and function of peritoneal macrophages. Sci Immunol 2020; 5:eabc4466. [PMID: 32561560 PMCID: PMC7610697 DOI: 10.1126/sciimmunol.abc4466] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022]
Abstract
Macrophages reside in the body cavities where they maintain serosal homeostasis and provide immune surveillance. Peritoneal macrophages are implicated in the etiology of pathologies including peritonitis, endometriosis, and metastatic cancer; thus, understanding the factors that govern their behavior is vital. Using a combination of fate mapping techniques, we have investigated the impact of sex and age on murine peritoneal macrophage differentiation, turnover, and function. We demonstrate that the sexually dimorphic replenishment of peritoneal macrophages from the bone marrow, which is high in males and very low in females, is driven by changes in the local microenvironment that arise upon sexual maturation. Population and single-cell RNA sequencing revealed marked dimorphisms in gene expression between male and female peritoneal macrophages that was, in part, explained by differences in composition of these populations. By estimating the time of residency of different subsets within the cavity and assessing development of dimorphisms with age and in monocytopenic Ccr2 -/- mice, we demonstrate that key sex-dependent features of peritoneal macrophages are a function of the differential rate of replenishment from the bone marrow, whereas others are reliant on local microenvironment signals. We demonstrate that the dimorphic turnover of peritoneal macrophages contributes to differences in the ability to protect against pneumococcal peritonitis between the sexes. These data highlight the importance of considering both sex and age in susceptibility to inflammatory and infectious diseases.
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Affiliation(s)
- C C Bain
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK.
| | - D A Gibson
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - N J Steers
- Columbia University Irving Medical Center, Columbia University, New York, NY 10032, USA
| | - K Boufea
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - P A Louwe
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - C Doherty
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - V González-Huici
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - R Gentek
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - M Magalhaes-Pinto
- Lydia Becker Institute for Immunology and Infection, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
| | - T Shaw
- Lydia Becker Institute for Immunology and Infection, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
- Manchester Collaborative Centre for Inflammation Research (MCCIR), University of Manchester, Manchester, UK
| | - M Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - C Bénézech
- Centre for Cardiovascular Sciences, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - S R Walmsley
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - D H Dockrell
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - P T K Saunders
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - N N Batada
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - S J Jenkins
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK.
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