151
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Travers M, Brown SM, Dunworth M, Holbert CE, Wiehagen KR, Bachman KE, Foley JR, Stone ML, Baylin SB, Casero RA, Zahnow CA. DFMO and 5-Azacytidine Increase M1 Macrophages in the Tumor Microenvironment of Murine Ovarian Cancer. Cancer Res 2019; 79:3445-3454. [PMID: 31088836 DOI: 10.1158/0008-5472.can-18-4018] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/25/2019] [Accepted: 05/07/2019] [Indexed: 12/12/2022]
Abstract
Although ovarian cancer has a low incidence rate, it remains the most deadly gynecologic malignancy. Previous work has demonstrated that the DNMTi 5-Azacytidine (5AZA-C) activates type I interferon signaling to increase IFNγ+ T cells and natural killer (NK) cells and reduce the percentage of macrophages in the tumor microenvironment. To improve the efficacy of epigenetic therapy, we hypothesized that the addition of α-difluoromethylornithine (DFMO), an ornithine decarboxylase inhibitor, may further decrease immunosuppressive cell populations improving outcome. We tested this hypothesis in an immunocompetent mouse model for ovarian cancer and found that in vivo, 5AZA-C and DFMO, either alone or in combination, significantly increased survival, decreased tumor burden, and caused recruitment of activated (IFNγ+) CD4+ T cells, CD8+ T cells, and NK cells. The combination therapy had a striking increase in survival when compared with single-agent treatment, despite a smaller difference in recruited lymphocytes. Instead, combination therapy led to a significant decrease in immunosuppressive cells such as M2 polarized macrophages and an increase in tumor-killing M1 macrophages. In this model, depletion of macrophages with a CSF1R-blocking antibody reduced the efficacy of 5AZA-C + DFMO treatment and resulted in fewer M1 macrophages in the tumor microenvironment. These observations suggest our novel combination therapy modifies macrophage polarization in the tumor microenvironment, recruiting M1 macrophages and prolonging survival. SIGNIFICANCE: Combined epigenetic and polyamine-reducing therapy stimulates M1 macrophage polarization in the tumor microenvironment of an ovarian cancer mouse model, resulting in decreased tumor burden and prolonged survival.
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Affiliation(s)
- Meghan Travers
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Stephen M Brown
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Matthew Dunworth
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Cassandra E Holbert
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | | | | | - Jackson R Foley
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Meredith L Stone
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland.,Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Stephen B Baylin
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Robert A Casero
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland.
| | - Cynthia A Zahnow
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland.
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152
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Irons DL, Meinhardt T, Allers C, Kuroda MJ, Kim WK. Overexpression and activation of colony-stimulating factor 1 receptor in the SIV/macaque model of HIV infection and neuroHIV. Brain Pathol 2019; 29:826-836. [PMID: 31033097 DOI: 10.1111/bpa.12731] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 04/19/2019] [Indexed: 01/09/2023] Open
Abstract
In the present study, we investigated whether colony-stimulating factor 1 receptor (CSF1R) is expressed on brain macrophages and microglia in the human and macaque brain and whether it is upregulated and activated after lentivirus infection in vivo and contributes to development of encephalitic lesions. We examined, using multi-label and semi-quantitative immunofluorescence microscopy, the protein expression level and cellular localization of CSF1R in brain tissues from uninfected controls and SIV-infected adult macaques with or without encephalitis and also from uninfected controls, HIV-infected encephalitic subjects and virally suppressed subjects. In the normal uninfected brain, CSF1R protein was detected only on microglia and brain macrophages but not on neurons, astrocytes or oligodendrocytes. Microglia constitutively expressed CSF1R at low levels, and its expression was largely unchanged in non-encephalitic and encephalitic animals. Brain macrophages, including perivascular macrophages (PVMs), expressed higher levels of CSF1R compared to microglia. Interestingly, we found significantly increased expression of CSF1R on the infected PVMs and lesional macrophages in the brains of encephalitic macaques. Moreover, the per cell expression of CSF1R determined by its mean pixel intensity (MPI) correlated positively with the MPI of SIV Gag p28 in SIV-infected PVMs. Using phosphorylated CSF1R at tyrosine residue 723 and phosphorylated signal transducer and activator of transcription 5 at tyrosine reside 694 as markers for CSF1R activation, we found selective activation of CSF1R signaling in infected brain macrophages in encephalitis. We also found colocalization of CSF1R and its ligand CSF1 in PVMs and lesional macrophages in the brains of encephalitic macaques and humans. Notably, elevated brain CSF1R expression was found in virally suppressed subjects. These findings point to opportunities for developing a specific approach targeting infected brain macrophages, with several brain-penetrant CSF1R inhibitors that are available now, in order to eliminate central nervous system macrophage reservoirs, while not affecting resting uninfected microglia and PVMs that show no CSF1R activation.
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Affiliation(s)
- Derek L Irons
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA
| | - Timothy Meinhardt
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA
| | - Carolina Allers
- The Division of Immunology, Tulane National Primate Research Center, Covington, LA
| | - Marcelo J Kuroda
- The Division of Immunology, Tulane National Primate Research Center, Covington, LA
| | - Woong-Ki Kim
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA
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153
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Pepe G, Locati M, Della Torre S, Mornata F, Cignarella A, Maggi A, Vegeto E. The estrogen-macrophage interplay in the homeostasis of the female reproductive tract. Hum Reprod Update 2019; 24:652-672. [PMID: 30256960 DOI: 10.1093/humupd/dmy026] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 08/10/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Estrogens are known to orchestrate reproductive events and to regulate the immune system during infections and following tissue damage. Recent findings suggest that, in the absence of any danger signal, estrogens trigger the physiological expansion and functional specialization of macrophages, which are immune cells that populate the female reproductive tract (FRT) and are increasingly being recognized to participate in tissue homeostasis beyond their immune activity against infections. Although estrogens are the only female gonadal hormones that directly target macrophages, a comprehensive view of this endocrine-immune communication and its involvement in the FRT is still missing. OBJECTIVE AND RATIONALE Recent accomplishments encourage a revision of the literature on the ability of macrophages to respond to estrogens and induce tissue-specific functions required for reproductive events, with the aim to envision macrophages as key players in FRT homeostasis and mediators of the regenerative and trophic actions of estrogens. SEARCH METHODS We conducted a systematic search using PubMed and Ovid for human, animal (rodents) and cellular studies published until 2018 on estrogen action in macrophages and the activity of these cells in the FRT. OUTCOMES Our search identified the remarkable ability of macrophages to activate biochemical processes in response to estrogens in cell culture experiments. The distribution at specific locations, interaction with selected cells and acquisition of distinct phenotypes of macrophages in the FRT, as well as the cyclic renewal of these properties at each ovarian cycle, demonstrate the involvement of these cells in the homeostasis of reproductive events. Moreover, current evidence suggests an association between estrogen-macrophage signaling and the generation of a tolerant and regenerative environment in the FRT, although a causative link is still missing. WIDER IMPLICATIONS Dysregulation of the functions and estrogen responsiveness of FRT macrophages may be involved in infertility and estrogen- and macrophage-dependent gynecological diseases, such as ovarian cancer and endometriosis. Thus, more research is needed on the physiology and pharmacological control of this endocrine-immune interplay.
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Affiliation(s)
- Giovanna Pepe
- Department of Pharmacological and Biomolecular Sciences, Center of Excellence on Neurodegenerative Diseases, University of Milan, via Balzaretti, 9 Milan, Italy
| | - Massimo Locati
- Humanitas Clinical and Research Center, Segrate, Italy
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, via fratelli Cervi, Segrate, Italy
| | - Sara Della Torre
- Department of Pharmacological and Biomolecular Sciences, Center of Excellence on Neurodegenerative Diseases, University of Milan, via Balzaretti, 9 Milan, Italy
| | - Federica Mornata
- Department of Pharmacological and Biomolecular Sciences, Center of Excellence on Neurodegenerative Diseases, University of Milan, via Balzaretti, 9 Milan, Italy
| | - Andrea Cignarella
- Department of Medicine, University of Padua, Largo Meneghetti 2, Padua, Italy
| | - Adriana Maggi
- Department of Pharmacological and Biomolecular Sciences, Center of Excellence on Neurodegenerative Diseases, University of Milan, via Balzaretti, 9 Milan, Italy
| | - Elisabetta Vegeto
- Department of Pharmacological and Biomolecular Sciences, Center of Excellence on Neurodegenerative Diseases, University of Milan, via Balzaretti, 9 Milan, Italy
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154
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Wang ECE, Dai Z, Ferrante AW, Drake CG, Christiano AM. A Subset of TREM2 + Dermal Macrophages Secretes Oncostatin M to Maintain Hair Follicle Stem Cell Quiescence and Inhibit Hair Growth. Cell Stem Cell 2019; 24:654-669.e6. [PMID: 30930146 DOI: 10.1016/j.stem.2019.01.011] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 10/30/2018] [Accepted: 01/26/2019] [Indexed: 12/31/2022]
Abstract
Hair growth can be induced from resting mouse hair follicles by topical application of JAK inhibitors, suggesting that JAK-STAT signaling is required for maintaining hair follicle stem cells (HFSCs) in a quiescent state. Here, we show that Oncostatin M (OSM), an IL-6 family cytokine, negatively regulates hair growth by signaling through JAK-STAT5 to maintain HFSC quiescence. Genetic deletion of the OSM receptor or STAT5 can induce premature HFSC activation, suggesting that the resting telogen stage is actively maintained by the hair follicle niche. Single-cell RNA sequencing revealed that the OSM source is not intrinsic to the hair follicle itself and is instead a subset of TREM2+ macrophages that is enriched within the resting follicle and deceases immediately prior to HFSC activation. In vivo inhibition of macrophage function was sufficient to induce HFSC proliferation and hair cycle induction. Together these results clarify how JAK-STAT signaling actively inhibits hair growth.
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Affiliation(s)
- Etienne C E Wang
- Department of Dermatology, Columbia University, New York, NY, USA; National Skin Center, Singapore, Singapore
| | - Zhenpeng Dai
- Department of Dermatology, Columbia University, New York, NY, USA
| | | | - Charles G Drake
- Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, USA
| | - Angela M Christiano
- Department of Dermatology, Columbia University, New York, NY, USA; Department of Genetics & Development, Columbia University, New York, NY, USA.
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155
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Jürgensen HJ, Silva LM, Krigslund O, van Putten S, Madsen DH, Behrendt N, Engelholm LH, Bugge TH. CCL2/MCP-1 signaling drives extracellular matrix turnover by diverse macrophage subsets. Matrix Biol Plus 2019; 1:100003. [PMID: 33543002 PMCID: PMC7852312 DOI: 10.1016/j.mbplus.2019.03.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 12/11/2022] Open
Abstract
Macrophage plasticity, cellular origin, and phenotypic heterogeneity are perpetual challenges for studies addressing the biology of this pivotal immune cell in development, homeostasis, and tissue remodeling/repair. Consequently, a myriad of macrophage subtypes has been described in these contexts. To facilitate the identification of functional macrophage subtypes in vivo, here we used a flow cytometry-based assay that allows for detailed phenotyping of macrophages engaged in extracellular matrix (ECM) degradation. Of the five macrophage subtypes identified in the remodeling dermis by using this assay, collagen degradation was primarily executed by Ly6C−CCR2+ and Ly6C−CCR2low macrophages via mannose receptor-dependent collagen endocytosis, while Ly6C+CCR2+ macrophages were the dominant fibrin-endocytosing cells. Unexpectedly, the CCL2/MCP1-CCR2 signaling axis was critical for both collagen and fibrin degradation, while collagen degradation was independent of IL-4Ra signaling. Furthermore, the cytokine GM-CSF selectively enhanced collagen degradation by Ly6C+CCR2+ macrophages. This study reveals distinct subsets of macrophages engaged in ECM turnover and identifies novel wound healing-associated functions for CCL2 and GM-CSF inflammatory cytokines. Phenotypically diverse subsets of dermal macrophages undertake the degradation of extracellular matrix C-C motif chemokine Ligand 2 (CCL2) signaling is critical for macrophage-mediated endocytosis of collagen and fibrin. Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) and Interleukin (IL)-13 stimulate collagen endocytosis. The wound healing-associated IL4-IL4 Receptor a (IL4Ra) signaling is dispensable for collagen endocytosis by macrophages. The mannose receptor is the principal endocytic collagen receptor utilized by resident dermal macrophages.
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Key Words
- AF, Alexa Fluor
- CCL2/MCP-1, chemokine (C-C motif) ligand 2/monocyte chemoattractant protein 1
- CCR2, C-C chemokine receptor type 2
- CEMS, collagen-endocytosing macrophages
- Collagen degradation
- ECM, extracellular matrix
- Extracellular matrix endocytosis
- FEMS, fibrin-endocytosing macrophages
- FMO, fluorescence minus one
- Fibrin degradation
- GM-CSF, Granulocyte Macrophage-Colony Stimulating Factor
- GM-CSFR, GM-CSF Receptor
- IL, Interleukin
- IL4Ra, IL4 Receptor a
- Interleukin-13
- M-CSF, Macrophage-Colony Stimulating Factor
- MR, mannose receptor/CD206
- Mannose receptor/CD206
- Plg, plasminogen
- RFP, red fluorescent protein
- uPARAP, urokinase plasminogen activator receptor associated protein/Endo180
- uPARAP/Endo180
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Affiliation(s)
- Henrik J. Jürgensen
- Proteases and Tissue Remodeling Section, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892, USA
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
| | - Lakmali M. Silva
- Proteases and Tissue Remodeling Section, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892, USA
- Oral Inflammation and Immunity Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892, USA
| | - Oliver Krigslund
- Proteases and Tissue Remodeling Section, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892, USA
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
| | - Sander van Putten
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
| | - Daniel H. Madsen
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
- Center for Cancer Immune Therapy (CCIT), Department of Haematology, Herlev Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark
- Department of Oncology, Herlev Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark
| | - Niels Behrendt
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
| | - Lars H. Engelholm
- Finsen Laboratory, Rigshospitalet/BRIC, University of Copenhagen, Ole Maaloesvej 5, DK-2200 Copenhagen N, Denmark
| | - Thomas H. Bugge
- Proteases and Tissue Remodeling Section, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Bethesda, MD 20892, USA
- Corresponding author at: Proteases and Tissue Remodeling Section, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Room 211, Bethesda, MD 20892, USA.
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156
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Thangavelu G, Lee YC, Loschi M, Schaechter KM, Feser CJ, Koehn BH, Nowak EC, Zeiser R, Serody JS, Murphy WJ, Munn DH, Chambon P, Noelle RJ, Blazar BR. Dendritic Cell Expression of Retinal Aldehyde Dehydrogenase-2 Controls Graft-versus-Host Disease Lethality. THE JOURNAL OF IMMUNOLOGY 2019; 202:2795-2805. [PMID: 30885956 DOI: 10.4049/jimmunol.1800899] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 02/26/2019] [Indexed: 01/11/2023]
Abstract
Recent studies have underscored the critical role of retinoic acid (RA) in the development of lineage-committed CD4 and CD8 T cells in vivo. We have shown that under acute graft-versus-host disease (GVHD) inflammatory conditions, RA is upregulated in the intestine and is proinflammatory, as GVHD lethality was attenuated when donor allogeneic T cells selectively expressed a dominant negative RA receptor α that blunted RA signaling. RA can function in an autocrine and paracrine fashion, and as such, the host cell lineage responsible for the production of RA metabolism and the specific RA-metabolizing enzymes that potentiate GVHD severity are unknown. In this study, we demonstrate that enhancing RA degradation in the host and to a lesser extent donor hematopoietic cells by overexpressing the RA-catabolizing enzyme CYP26A1 reduced GVHD. RA production is facilitated by retinaldehyde isoform-2 (RALDH2) preferentially expressed in dendritic cells (DCs). Conditionally deleted RA-synthesizing enzyme RALDH2 in host or to a lesser extent donor DCs reduced GVHD lethality. Improved survival in recipients with RALDH2-deleted DCs was associated with increased T cell death, impaired T effector function, increased regulatory T cell frequency, and augmented coinhibitory molecule expression on donor CD4+ T cells. In contrast, retinaldehydrogenase isoform-1 (RALDH1) is dominantly expressed in intestinal epithelial cells. Unexpectedly, conditional host intestinal epithelial cells RALDH1 deletion failed to reduce GVHD. These data demonstrate the critical role of both donor and especially host RALDH2+ DCs in driving murine GVHD and suggest RALDH2 inhibition or CYP26A1 induction as novel therapeutic strategies to prevent GVHD.
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Affiliation(s)
- Govindarajan Thangavelu
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - Yu-Chi Lee
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Norris Cotton Cancer Center, Lebanon, NH 03756
| | - Michael Loschi
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - K Melanie Schaechter
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - Colby J Feser
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - Brent H Koehn
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - Elizabeth C Nowak
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Norris Cotton Cancer Center, Lebanon, NH 03756
| | - Robert Zeiser
- Department of Hematology, Oncology and Stem Cell Transplantation, University Medical Center, Albert Ludwig University of Freiburg, 79106 Freiburg, Germany
| | - Jonathan S Serody
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 79106
| | - William J Murphy
- Department of Dermatology, Center for Comparative Medicine, University of California, Davis School of Medicine, Sacramento, CA 95817
| | - David H Munn
- Department of Pediatrics, Georgia Health Sciences University, Augusta, GA 30912; and
| | - Pierre Chambon
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS UMR7104, INSERM U964, 67404 Illkirch Cedex, France
| | - Randolph J Noelle
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Norris Cotton Cancer Center, Lebanon, NH 03756
| | - Bruce R Blazar
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455;
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157
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De Luca SN, Sominsky L, Soch A, Wang H, Ziko I, Rank MM, Spencer SJ. Conditional microglial depletion in rats leads to reversible anorexia and weight loss by disrupting gustatory circuitry. Brain Behav Immun 2019; 77:77-91. [PMID: 30578932 DOI: 10.1016/j.bbi.2018.12.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 01/12/2023] Open
Abstract
Microglia are highly sensitive to dietary influence, becoming activated acutely and long-term by high fat diet. However, their role in regulating satiety and feeding in healthy individuals remains unclear. Here we show that microglia are essential for the normal regulation of satiety and metabolism in rats. Short-term microglial depletion in a Cx3cr1-Dtr rat led to a dramatic weight loss that was largely accounted for by an acute reduction in food intake. This weight loss and anorexia were not likely due to a sickness response since the rats did not display peripheral or central inflammation, withdrawal, anxiety-like behavior, or nausea-associated pica. Hormonal and hypothalamic anatomical changes were largely compensatory to the suppressed food intake, which occurred in association with disruption of the gustatory circuitry at the paraventricular nucleus of the thalamus. Thus, microglia are important in supporting normal feeding behaviors and weight, and regulating preference for palatable food. Inhibiting this circuitry is able to over-ride strong compensatory drives to eat, providing a potential target for satiety control.
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Affiliation(s)
- Simone N De Luca
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Luba Sominsky
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Hao Wang
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Ilvana Ziko
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Michelle M Rank
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia.
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158
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Chen T, Cao Q, Wang Y, Harris DCH. M2 macrophages in kidney disease: biology, therapies, and perspectives. Kidney Int 2019; 95:760-773. [PMID: 30827512 DOI: 10.1016/j.kint.2018.10.041] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/10/2018] [Accepted: 10/18/2018] [Indexed: 12/13/2022]
Abstract
Tissue macrophages are crucial players in homeostasis, inflammation, and immunity. They are characterized by heterogeneity and plasticity, due to which they display a continuum of phenotypes with M1/M2 presenting 2 extremes of this continuum. M2 macrophages are usually termed in the literature as anti-inflammatory and wound healing. Substantial progress has been made in elucidating the biology of M2 macrophages and their potential for clinical translation. In this review we discuss the current state of knowledge in M2 macrophage research with an emphasis on kidney disease. We explore their therapeutic potential and the challenges in using them as cellular therapies. Some new regulators that shape macrophage polarization and potential areas for future research are also examined.
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Affiliation(s)
- Titi Chen
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia; Department of Renal Medicine, Westmead Hospital, Westmead, New South Wales, Australia.
| | - Qi Cao
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia
| | - Yiping Wang
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia
| | - David C H Harris
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia; Department of Renal Medicine, Westmead Hospital, Westmead, New South Wales, Australia
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159
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Louie DAP, Liao S. Lymph Node Subcapsular Sinus Macrophages as the Frontline of Lymphatic Immune Defense. Front Immunol 2019; 10:347. [PMID: 30891035 PMCID: PMC6413714 DOI: 10.3389/fimmu.2019.00347] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 02/11/2019] [Indexed: 01/12/2023] Open
Abstract
Lymphatic vessels collect and transport lymph and pathogens to the draining lymph node (LN) to generate proper immune protection. A layer of macrophages that strategically line the LN subcapsular sinus (SCS) is directly exposed to the afferent lymph and are denoted as SCS macrophages. These macrophages are the frontline of immune defense that interact with lymph-borne antigens. The importance of these macrophages in limiting the spread of pathogens has been demonstrated in both viral and bacterial infection. In anti-microbial responses, these macrophages can directly or indirectly activate other LN innate immune cells to fight against pathogens, as well as activate T cells or B cells for adaptive immunity. As the first layer of immune cells embracing the tumor-derived antigens, SCS macrophages also actively participate in cancer immune regulation. Recent studies have shown that the LNs' SCS macrophage layer is interrupted in disease models. Despite their importance in fighting the spread of pathogens and in activating anti-tumor immunity, the mechanism and the immunological functional consequences for their disruption are not well-understood. Understanding the mechanism of these macrophages will enhance their capability for therapeutic targeting.
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Affiliation(s)
- Dante Alexander Patrick Louie
- Department of Microbiology, Immunology and Infectious Diseases, The Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Shan Liao
- Department of Microbiology, Immunology and Infectious Diseases, The Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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160
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Mussbacher M, Salzmann M, Brostjan C, Hoesel B, Schoergenhofer C, Datler H, Hohensinner P, Basílio J, Petzelbauer P, Assinger A, Schmid JA. Cell Type-Specific Roles of NF-κB Linking Inflammation and Thrombosis. Front Immunol 2019; 10:85. [PMID: 30778349 PMCID: PMC6369217 DOI: 10.3389/fimmu.2019.00085] [Citation(s) in RCA: 375] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 01/11/2019] [Indexed: 12/22/2022] Open
Abstract
The transcription factor NF-κB is a central mediator of inflammation with multiple links to thrombotic processes. In this review, we focus on the role of NF-κB signaling in cell types within the vasculature and the circulation that are involved in thrombo-inflammatory processes. All these cells express NF-κB, which mediates important functions in cellular interactions, cell survival and differentiation, as well as expression of cytokines, chemokines, and coagulation factors. Even platelets, as anucleated cells, contain NF-κB family members and their corresponding signaling molecules, which are involved in platelet activation, as well as secondary feedback circuits. The response of endothelial cells to inflammation and NF-κB activation is characterized by the induction of adhesion molecules promoting binding and transmigration of leukocytes, while simultaneously increasing their thrombogenic potential. Paracrine signaling from endothelial cells activates NF-κB in vascular smooth muscle cells and causes a phenotypic switch to a “synthetic” state associated with a decrease in contractile proteins. Monocytes react to inflammatory situations with enforced expression of tissue factor and after differentiation to macrophages with altered polarization. Neutrophils respond with an extension of their life span—and upon full activation they can expel their DNA thereby forming so-called neutrophil extracellular traps (NETs), which exert antibacterial functions, but also induce a strong coagulatory response. This may cause formation of microthrombi that are important for the immobilization of pathogens, a process designated as immunothrombosis. However, deregulation of the complex cellular links between inflammation and thrombosis by unrestrained NET formation or the loss of the endothelial layer due to mechanical rupture or erosion can result in rapid activation and aggregation of platelets and the manifestation of thrombo-inflammatory diseases. Sepsis is an important example of such a disorder caused by a dysregulated host response to infection finally leading to severe coagulopathies. NF-κB is critically involved in these pathophysiological processes as it induces both inflammatory and thrombotic responses.
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Affiliation(s)
- Marion Mussbacher
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Manuel Salzmann
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Christine Brostjan
- Department of Surgery, General Hospital, Medical University of Vienna, Vienna, Austria
| | - Bastian Hoesel
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | | | - Hannes Datler
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Philipp Hohensinner
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - José Basílio
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Peter Petzelbauer
- Skin and Endothelial Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Alice Assinger
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Johannes A Schmid
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
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161
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 8029-- -] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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162
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The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 and 1880=1880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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163
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 1-- -] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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164
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 1-- #] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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165
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 8029-- awyx] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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166
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The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 8029-- #] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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167
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2019. [DOI: 10.1016/j.it.2018.11.007 order by 1-- gadu] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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168
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Hu T, Wu Z, Bush SJ, Freem L, Vervelde L, Summers KM, Hume DA, Balic A, Kaiser P. Characterization of Subpopulations of Chicken Mononuclear Phagocytes That Express TIM4 and CSF1R. THE JOURNAL OF IMMUNOLOGY 2019; 202:1186-1199. [PMID: 30626692 DOI: 10.4049/jimmunol.1800504] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 12/03/2018] [Indexed: 01/08/2023]
Abstract
The phosphatidylserine receptor TIM4, encoded by TIMD4, mediates the phagocytic uptake of apoptotic cells. We applied anti-chicken TIM4 mAbs in combination with CSF1R reporter transgenes to dissect the function of TIM4 in the chick (Gallus gallus). During development in ovo, TIM4 was present on the large majority of macrophages, but expression became more heterogeneous posthatch. Blood monocytes expressed KUL01, class II MHC, and CSF1R-mApple uniformly. Around 50% of monocytes were positive for surface TIM4. They also expressed many other monocyte-specific transcripts at a higher level than TIM4- monocytes. In liver, highly phagocytic TIM4hi cells shared many transcripts with mammalian Kupffer cells and were associated with uptake of apoptotic cells. Although they expressed CSF1R mRNA, Kupffer cells did not express the CSF1R-mApple transgene, suggesting that additional CSF1R transcriptional regulatory elements are required by these cells. By contrast, CSF1R-mApple was detected in liver TIM4lo and TIM4- cells, which were not phagocytic and were more abundant than Kupffer cells. These cells expressed CSF1R alongside high levels of FLT3, MHCII, XCR1, and other markers associated with conventional dendritic cells in mice. In bursa, TIM4 was present on the cell surface of two populations. Like Kupffer cells, bursal TIM4hi phagocytes coexpressed many receptors involved in apoptotic cell recognition. TIM4lo cells appear to be a subpopulation of bursal B cells. In overview, TIM4 is associated with phagocytes that eliminate apoptotic cells in the chick. In the liver, TIM4 and CSF1R reporters distinguished Kupffer cells from an abundant population of dendritic cell-like cells.
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Affiliation(s)
- Tuanjun Hu
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
| | - Zhiguang Wu
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
| | - Stephen J Bush
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
| | - Lucy Freem
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
| | - Lonneke Vervelde
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
| | - Kim M Summers
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom.,Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, Queensland 4102, Australia
| | - David A Hume
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom; .,Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, Queensland 4102, Australia
| | - Adam Balic
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom;
| | - Pete Kaiser
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, United Kingdom
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169
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Abstract
Research during the last decade has generated numerous insights on the presence, phenotype, and function of myeloid cells in cardiovascular organs. Newer tools with improved detection sensitivities revealed sizable populations of tissue-resident macrophages in all major healthy tissues. The heart and blood vessels contain robust numbers of these cells; for instance, 8% of noncardiomyocytes in the heart are macrophages. This number and the cell's phenotype change dramatically in disease conditions. While steady-state macrophages are mostly monocyte independent, macrophages residing in the inflamed vascular wall and the diseased heart derive from hematopoietic organs. In this review, we will highlight signals that regulate macrophage supply and function, imaging applications that can detect changes in cell numbers and phenotype, and opportunities to modulate cardiovascular inflammation by targeting macrophage biology. We strive to provide a systems-wide picture, i.e., to focus not only on cardiovascular organs but also on tissues involved in regulating cell supply and phenotype, as well as comorbidities that promote cardiovascular disease. We will summarize current developments at the intersection of immunology, detection technology, and cardiovascular health.
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Affiliation(s)
- Vanessa Frodermann
- Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School , Boston, Massachusetts ; and Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School , Boston, Massachusetts
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School , Boston, Massachusetts ; and Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School , Boston, Massachusetts
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170
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Jones JD, Sinder BP, Paige D, Soki FN, Koh AJ, Thiele S, Shiozawa Y, Hofbauer LC, Daignault S, Roca H, McCauley LK. Trabectedin Reduces Skeletal Prostate Cancer Tumor Size in Association with Effects on M2 Macrophages and Efferocytosis. Neoplasia 2018; 21:172-184. [PMID: 30591422 PMCID: PMC6314218 DOI: 10.1016/j.neo.2018.11.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 12/30/2022] Open
Abstract
Macrophages play a dual role in regulating tumor progression. They can either reduce tumor growth by secreting antitumorigenic factors or promote tumor progression by secreting a variety of soluble factors. The purpose of this study was to define the monocyte/macrophage population prevalent in skeletal tumors, explore a mechanism employed in supporting prostate cancer (PCa) skeletal metastasis, and examine a novel therapeutic target. Phagocytic CD68+ cells were found to correlate with Gleason score in human PCa samples, and M2-like macrophages (F4/80+CD206+) were identified in PCa bone resident tumors in mice. Induced M2-like macrophages in vitro were more proficient at phagocytosis (efferocytosis) of apoptotic tumor cells than M1-like macrophages. Moreover, soluble factors released from efferocytic versus nonefferocytic macrophages increased PC-3 prostate cancer cell numbers in vitro. Trabectedin exposure reduced M2-like (F4/80+CD206+) macrophages in vivo. Trabectedin administration after PC-3 cell intracardiac inoculation reduced skeletal metastatic tumor growth. Preventative pretreatment with trabectedin 7 days prior to PC-3 cell injection resulted in reduced M2-like macrophages in the marrow and reduced skeletal tumor size. Together, these findings suggest that M2-like monocytes and macrophages promote PCa skeletal metastasis and that trabectedin represents a candidate therapeutic target.
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Affiliation(s)
- J D Jones
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - B P Sinder
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - D Paige
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - F N Soki
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - A J Koh
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - S Thiele
- Department of Endocrinology, Diabetes, and Bone Disease, Technische Universität Dresden Medical Center, Dresden, Germany; German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Y Shiozawa
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI; Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, NC
| | - L C Hofbauer
- Department of Endocrinology, Diabetes, and Bone Disease, Technische Universität Dresden Medical Center, Dresden, Germany; German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - S Daignault
- Department of Biostatistics, Center for Cancer Biostatistics, University of Michigan, Ann Arbor, MI
| | - H Roca
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - L K McCauley
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI; Department of Pathology, University of Michigan Medical School, Ann Arbor, MI.
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171
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A miR-150/TET3 pathway regulates the generation of mouse and human non-classical monocyte subset. Nat Commun 2018; 9:5455. [PMID: 30575719 PMCID: PMC6303340 DOI: 10.1038/s41467-018-07801-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 11/19/2018] [Indexed: 12/30/2022] Open
Abstract
Non-classical monocyte subsets may derive from classical monocyte differentiation and the proportion of each subset is tightly controlled. Deregulation of this repartition is observed in diverse human diseases, including chronic myelomonocytic leukemia (CMML) in which non-classical monocyte numbers are significantly decreased relative to healthy controls. Here, we identify a down-regulation of hsa-miR-150 through methylation of a lineage-specific promoter in CMML monocytes. Mir150 knock-out mice demonstrate a cell-autonomous defect in non-classical monocytes. Our pulldown experiments point to Ten-Eleven-Translocation-3 (TET3) mRNA as a hsa-miR-150 target in classical human monocytes. We show that Tet3 knockout mice generate an increased number of non-classical monocytes. Our results identify the miR-150/TET3 axis as being involved in the generation of non-classical monocytes.
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172
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Hume DA, Irvine KM, Pridans C. The Mononuclear Phagocyte System: The Relationship between Monocytes and Macrophages. Trends Immunol 2018; 40:98-112. [PMID: 30579704 DOI: 10.1016/j.it.2018.11.007] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 11/18/2018] [Accepted: 11/30/2018] [Indexed: 02/07/2023]
Abstract
The mononuclear phagocyte system (MPS) is defined as a cell lineage in which committed marrow progenitors give rise to blood monocytes and tissue macrophages. Here, we discuss the concept of self-proscribed macrophage territories and homeostatic regulation of tissue macrophage abundance through growth factor availability. Recent studies have questioned the validity of the MPS model and argued that tissue-resident macrophages are a separate lineage seeded during development and maintained by self-renewal. We address this issue; discuss the limitations of inbred mouse models of monocyte-macrophage homeostasis; and summarize the evidence suggesting that during postnatal life, monocytes can replace resident macrophages in all major organs and adopt their tissue-specific gene expression. We conclude that the MPS remains a valid and accurate framework for understanding macrophage development and homeostasis.
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Affiliation(s)
- David A Hume
- Mater Research Institute-University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, QLD 4102, Australia.
| | - Katharine M Irvine
- Mater Research Institute-University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, QLD 4102, Australia
| | - Clare Pridans
- University of Edinburgh Centre for Inflammation Research, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
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173
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Bain CC, Schridde A. Origin, Differentiation, and Function of Intestinal Macrophages. Front Immunol 2018; 9:2733. [PMID: 30538701 PMCID: PMC6277706 DOI: 10.3389/fimmu.2018.02733] [Citation(s) in RCA: 208] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 11/06/2018] [Indexed: 12/12/2022] Open
Abstract
Macrophages are increasingly recognized as essential players in the maintenance of intestinal homeostasis and as key sentinels of the intestinal immune system. However, somewhat paradoxically, they are also implicated in chronic pathologies of the gastrointestinal tract, such as inflammatory bowel disease (IBD) and are therefore considered potential targets for novel therapies. In this review, we will discuss recent advances in our understanding of intestinal macrophage heterogeneity, their ontogeny and the potential factors that regulate their origin. We will describe how the local environment of the intestine imprints the phenotypic and functional identity of the macrophage compartment, and how this changes during intestinal inflammation and infection. Finally, we highlight key outstanding questions that should be the focus of future research.
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Affiliation(s)
- Calum C Bain
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Anika Schridde
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
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174
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Moran I, Grootveld AK, Nguyen A, Phan TG. Subcapsular Sinus Macrophages: The Seat of Innate and Adaptive Memory in Murine Lymph Nodes. Trends Immunol 2018; 40:35-48. [PMID: 30502023 DOI: 10.1016/j.it.2018.11.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 10/30/2018] [Accepted: 11/07/2018] [Indexed: 01/16/2023]
Abstract
Subcapsular sinus (SCS) macrophages are strategically positioned at the lymph-tissue interface in the lymph node to trap and present antigen to B cells. Recent murine data has shown that SCS macrophages also prevent the systemic spread of lymph-borne pathogens and are capable of activating a diverse range of innate effector and adaptive memory cells, including follicular memory T cells and memory B cells (Bmems), that are either pre-positioned or rapidly recruited to the subcapsular niche following infection and inflammation. Furthermore, Bmems are rapidly reactivated to differentiate into plasma cells in subcapsular proliferative foci (SPF). Thus, understanding how SCS macrophages coordinate both innate and adaptive memory responses in the subcapsular niche can provide new opportunities to bolster immunity against pathogens and cancer.
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Affiliation(s)
- Imogen Moran
- Immunology Division, Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia.
| | - Abigail K Grootveld
- Immunology Division, Garvan Institute of Medical Research, Sydney, Australia; Department of Biology and Biochemistry, Faculty of Science, University of Bath, Bath, UK
| | - Akira Nguyen
- Immunology Division, Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Tri Giang Phan
- Immunology Division, Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia.
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175
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Haseeb M, Anwar MA, Choi S. Molecular Interactions Between Innate and Adaptive Immune Cells in Chronic Lymphocytic Leukemia and Their Therapeutic Implications. Front Immunol 2018; 9:2720. [PMID: 30542344 PMCID: PMC6277854 DOI: 10.3389/fimmu.2018.02720] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022] Open
Abstract
Innate immunity constitutes the first line of host defense against various anomalies in humans, and it also guides the adaptive immune response. The function of innate immune components and adaptive immune components are interlinked in hematological malignancies including chronic lymphocytic leukemia (CLL), and molecular interactions between innate and adaptive immune components are crucial for the development, progression and the therapeutic outcome of CLL. In this leukemia, genetic mutations in B cells and B cell receptors (BCR) are key driving factors along with evasion of cytotoxic T lymphocytes and promotion of regulatory T cells. Similarly, the release of various cytokines from CLL cells triggers the protumor phenotype in macrophages that further edges the CLL cells. Moreover, under the influence of various cytokines, dendritic cells are unable to mature and trigger T cell mediated antitumor response. The phenotypes of these cells are ultimately controlled by respective signaling pathways, the most notables are BCR, Wnt, Notch, and NF-κB, and their activation affects the cytokine profile that controls the pathogenesis of CLL, and challenge its treatment. There are several novel substances for CLL under clinical development, including kinase inhibitors, antibodies, and immune-modulators that offer new hopes. DC-based vaccines and CAR T cell therapy are promising tools; however, further studies are required to precisely dissect the molecular interactions among various molecular entities. In this review, we systematically discuss the involvement, common targets and therapeutic interventions of various cells for the better understanding and therapy of CLL.
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Affiliation(s)
- Muhammad Haseeb
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Muhammad Ayaz Anwar
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
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176
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Waddell LA, Lefevre L, Bush SJ, Raper A, Young R, Lisowski ZM, McCulloch MEB, Muriuki C, Sauter KA, Clark EL, Irvine KM, Pridans C, Hope JC, Hume DA. ADGRE1 (EMR1, F4/80) Is a Rapidly-Evolving Gene Expressed in Mammalian Monocyte-Macrophages. Front Immunol 2018; 9:2246. [PMID: 30327653 PMCID: PMC6174849 DOI: 10.3389/fimmu.2018.02246] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/10/2018] [Indexed: 12/26/2022] Open
Abstract
The F4/80 antigen, encoded by the Adgre1 locus, has been widely-used as a monocyte-macrophage marker in mice, but its value as a macrophage marker in other species is unclear, and has even been questioned. ADGRE1 is a seven transmembrane G protein-coupled receptor with an extracellular domain containing repeated Epidermal Growth Factor (EGF)-like calcium binding domains. Using a new monoclonal antibody, we demonstrated that ADGRE1 is a myeloid differentiation marker in pigs, absent from progenitors in bone marrow, highly-expressed in mature granulocytes, monocytes, and tissue macrophages and induced by macrophage colony-stimulating factor (CSF1) treatment in vivo. Based upon these observations, we utilized RNA-Seq to assess the expression of ADGRE1 mRNA in bone marrow or monocyte-derived macrophages (MDM) and alveolar macrophages from 8 mammalian species including pig, human, rat, sheep, goat, cow, water buffalo, and horse. ADGRE1 mRNA was expressed by macrophages in each species, with inter-species variation both in expression level and response to lipopolysaccharide (LPS) stimulation. Analysis of the RNA-Seq data also revealed additional exons in several species compared to current Ensembl annotations. The ruminant species and horses appear to encode a complete duplication of the 7 EGF-like domains. In every species, Sashimi plots revealed evidence of exon skipping of the EGF-like domains, which are highly-variable between species and polymorphic in humans. Consistent with these expression patterns, key elements of the promoter and a putative enhancer are also conserved across all species. The rapid evolution of this molecule and related ADGRE family members suggests immune selection and a role in pathogen recognition.
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Affiliation(s)
- Lindsey A. Waddell
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Lucas Lefevre
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Stephen J. Bush
- Nuffield Department of Clinical Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Anna Raper
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Rachel Young
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Zofia M. Lisowski
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Charity Muriuki
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Kristin A. Sauter
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Emily L. Clark
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Clare Pridans
- Centre for Inflammation Research at the University of Edinburgh, Edinburgh, United Kingdom
| | - Jayne C. Hope
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - David A. Hume
- Mater Research-University of Queensland, Woolloongabba, QLD, Australia
- Centre for Inflammation Research at the University of Edinburgh, Edinburgh, United Kingdom
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177
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Guilliams M, Mildner A, Yona S. Developmental and Functional Heterogeneity of Monocytes. Immunity 2018; 49:595-613. [DOI: 10.1016/j.immuni.2018.10.005] [Citation(s) in RCA: 395] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/04/2018] [Accepted: 10/02/2018] [Indexed: 02/07/2023]
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178
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Abstract
Purpose of Review Chronic wounds are a tremendous burden on the healthcare system and lead to significant patient morbidity and mortality. Normal cutaneous wound healing occurs through an intricate and delicate interplay between the immune system, keratinocytes, and dermal cells. Each cell type contributes signals that drive the normal phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This paper reviews how various immunological cell types and signaling molecules influence the way wounds develop, persist, and heal. Recent Findings Concurrent with the achievement of hemostasis, neutrophils are the first cells to migrate to the wound bed, brought in by pro-inflammatory signals including IL-8. Their apoptosis and engulfment by macrophages (efferocytosis) provides a key signal to the local immune milieu, including macrophages, to transition to an anti-inflammatory, pro-repair state, where angiogenesis occurs and granulation tissue is laid down. Myofibroblasts, activated through contractile forces and signaling molecules, then drive remodeling, where granulation tissue becomes scar. Unchecked inflammation at this stage can result in abnormal scar formation. Summary Although the derangement of immune signals at any stage can result in impaired wound healing, recent research has shown that the key transition point lies between the inflammatory and the proliferative phases. This review summarizes the events that facilitate this transition and discusses how this process can be disrupted, leading to chronic, non-healing wounds.
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179
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Gui P, Ben-Neji M, Belozertseva E, Dalenc F, Franchet C, Gilhodes J, Labrousse A, Bellard E, Golzio M, Poincloux R, Maridonneau-Parini I, Le Cabec V. The Protease-Dependent Mesenchymal Migration of Tumor-Associated Macrophages as a Target in Cancer Immunotherapy. Cancer Immunol Res 2018; 6:1337-1351. [DOI: 10.1158/2326-6066.cir-17-0746] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 06/29/2018] [Accepted: 08/20/2018] [Indexed: 11/16/2022]
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180
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Myeloma escape after stem cell transplantation is a consequence of T-cell exhaustion and is prevented by TIGIT blockade. Blood 2018; 132:1675-1688. [PMID: 30154111 DOI: 10.1182/blood-2018-01-825240] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 08/09/2018] [Indexed: 12/20/2022] Open
Abstract
Autologous stem cell transplantation (SCT) remains a standard of care for multiple myeloma (MM) patients and prolongs progression-free survival. A small cohort of patients achieve long-term control of disease, but the majority of patients ultimately relapse, and the mechanisms permitting disease progression remain unclear. In this study, we used a preclinical model of autologous SCT for myeloma where the disease either progressed (MM relapsed) or was controlled. In the bone marrow (BM), inhibitory receptor expression on CD8+ T cells correlated strongly with myeloma progression after transplant. In conjunction, the costimulatory/adhesion receptor CD226 (DNAM-1) was markedly downregulated. Interestingly, DNAM-1- CD8+ T cells in MM-relapsed mice had an exhausted phenotype, characterized by upregulation of multiple inhibitory receptors, including T-cell immunoglobulin and ITIM domains (TIGIT) and programmed cell death protein 1 (PD-1) with decreased T-bet and increased eomesodermin expression. Immune checkpoint blockade using monoclonal antibodies against PD-1 or TIGIT significantly prolonged myeloma control after SCT. Furthermore, CD8+ T cells from MM-relapsed mice exhibited high interleukin-10 (IL-10) secretion that was associated with increased TIGIT and PD-1 expression. However, while donor-derived IL-10 inhibited myeloma control post-SCT, this was independent of IL-10 secretion by or signaling to T cells. Instead, the donor myeloid compartment, including colony-stimulating factor 1 receptor-dependent macrophages and an IL-10-secreting dendritic cell population in the BM, promoted myeloma progression. Our findings highlight PD-1 or TIGIT blockade in conjunction with SCT as a potent combination therapy in the treatment of myeloma.
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181
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Saleh R, Lee MC, Khiew SH, Louis C, Fleetwood AJ, Achuthan A, Förster I, Cook AD, Hamilton JA. CSF-1 in Inflammatory and Arthritic Pain Development. THE JOURNAL OF IMMUNOLOGY 2018; 201:2042-2053. [PMID: 30120124 DOI: 10.4049/jimmunol.1800665] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022]
Abstract
Pain is one of the most debilitating symptoms in many diseases for which there is inadequate management and understanding. CSF-1, also known as M-CSF, acts via its receptor (CSF-1R, c-Fms) to regulate the development of the monocyte/macrophage lineage and to act locally in tissues to control macrophage numbers and function. It has been implicated in the control of neuropathic pain via a central action on microglia. We report in this study that systemic administration of a neutralizing anti-CSF-1R or CSF-1 mAb inhibits the development of inflammatory pain induced by zymosan, GM-CSF, and TNF in mice. This approach also prevented but did not ameliorate the development of arthritic pain and optimal disease driven by the three stimuli in mice, suggesting that CSF-1 may only be relevant when the driving inflammatory insults in tissues are acute and/or periodic. Systemic CSF-1 administration rapidly induced pain and enhanced the arthritis in an inflamed mouse joint, albeit via a different pathway(s) from that used by systemic GM-CSF and TNF. It is concluded that CSF-1 can function peripherally during the generation of inflammatory pain and hence may be a target for such pain and associated disease, including when the clinically important cytokines, TNF and GM-CSF, are involved. Our findings have ramifications for the selection and design of anti-CSF-1R/CSF-1 trials.
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Affiliation(s)
- Reem Saleh
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Ming-Chin Lee
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Stella H Khiew
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Cynthia Louis
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia.,Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; and
| | - Andrew J Fleetwood
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Adrian Achuthan
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Irmgard Förster
- Department of Immunology and Environment, Life and Medical Sciences Institute, University of Bonn, 53115 Bonn, Germany
| | - Andrew D Cook
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - John A Hamilton
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria 3050, Australia;
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182
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Larouche J, Sheoran S, Maruyama K, Martino MM. Immune Regulation of Skin Wound Healing: Mechanisms and Novel Therapeutic Targets. Adv Wound Care (New Rochelle) 2018; 7:209-231. [PMID: 29984112 PMCID: PMC6032665 DOI: 10.1089/wound.2017.0761] [Citation(s) in RCA: 310] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 12/12/2017] [Indexed: 12/17/2022] Open
Abstract
Significance: The immune system plays a central role in orchestrating the tissue healing process. Hence, controlling the immune system to promote tissue repair and regeneration is an attractive approach when designing regenerative strategies. This review discusses the pathophysiology of both acute and chronic wounds and possible strategies to control the immune system to accelerate chronic wound closure and promote skin regeneration (scar-less healing) of acute wounds. Recent Advances: Recent studies have revealed the key roles of various immune cells and immune mediators in skin repair. Thus, immune components have been targeted to promote chronic wound repair or skin regeneration and several growth factors, cytokines, and biomaterials have shown promising results in animal models. However, these novel strategies are often struggling to meet efficacy standards in clinical trials, partly due to inadequate drug delivery systems and safety concerns. Critical Issues: Excess inflammation is a major culprit in the dysregulation of normal wound healing, and further limiting inflammation effectively reduces scarring. However, current knowledge is insufficient to efficiently control inflammation and specific immune cells. This is further complicated by inadequate drug delivery methods. Future Directions: Improving our understanding of the molecular pathways through which the immune system controls the wound healing process could facilitate the design of novel regenerative therapies. Additionally, better delivery systems may make current and future therapies more effective. To promote the entry of current regenerative strategies into clinical trials, more evidence on their safety, efficacy, and cost-effectiveness is also needed.
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Affiliation(s)
- Jacqueline Larouche
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Victoria, Australia
| | - Sumit Sheoran
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Victoria, Australia
| | - Kenta Maruyama
- WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Mikaël M. Martino
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Victoria, Australia
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183
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Roche FP, Pietilä I, Kaito H, Sjöström EO, Sobotzki N, Noguer O, Skare TP, Essand M, Wollscheid B, Welsh M, Claesson-Welsh L. Leukocyte Differentiation by Histidine-Rich Glycoprotein/Stanniocalcin-2 Complex Regulates Murine Glioma Growth through Modulation of Antitumor Immunity. Mol Cancer Ther 2018; 17:1961-1972. [PMID: 29945872 DOI: 10.1158/1535-7163.mct-18-0097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 04/21/2018] [Accepted: 06/19/2018] [Indexed: 11/16/2022]
Abstract
The plasma-protein histidine-rich glycoprotein (HRG) is implicated in phenotypic switching of tumor-associated macrophages, regulating cytokine production and phagocytotic activity, thereby promoting vessel normalization and antitumor immune responses. To assess the therapeutic effect of HRG gene delivery on CNS tumors, we used adenovirus-encoded HRG to treat mouse intracranial GL261 glioma. Delivery of Ad5-HRG to the tumor site resulted in a significant reduction in glioma growth, associated with increased vessel perfusion and increased CD45+ leukocyte and CD8+ T-cell accumulation in the tumor. Antibody-mediated neutralization of colony-stimulating factor-1 suppressed the effects of HRG on CD45+ and CD8+ infiltration. Using a novel protein interaction-decoding technology, TRICEPS-based ligand receptor capture (LRC), we identified Stanniocalcin-2 (STC2) as an interacting partner of HRG on the surface of inflammatory cells in vitro and colocalization of HRG and STC2 in gliomas. HRG reduced the suppressive effects of STC2 on monocyte CD14+ differentiation and STC2-regulated immune response pathways. In consequence, Ad5-HRG-treated gliomas displayed decreased numbers of IL35+ Treg cells, providing a mechanistic rationale for the reduction in GL261 growth in response to Ad5-HRG delivery. We conclude that HRG suppresses glioma growth by modulating tumor inflammation through monocyte infiltration and differentiation. Moreover, HRG acts to balance the regulatory effects of its partner, STC2, on inflammation and innate and/or acquired immunity. HRG gene delivery therefore offers a potential therapeutic strategy to control antitumor immunity. Mol Cancer Ther; 17(9); 1961-72. ©2018 AACR.
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Affiliation(s)
- Francis P Roche
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Ilkka Pietilä
- Uppsala University, Department of Medical Cell Biology, Biomedical Center, Uppsala, Sweden
| | - Hiroshi Kaito
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Elisabet O Sjöström
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Nadine Sobotzki
- ETH Zürich, Department of Health Sciences and Technology & Institute of Molecular Systems Biology, Zürich, Switzerland
| | - Oriol Noguer
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Tor Persson Skare
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Magnus Essand
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden
| | - Bernd Wollscheid
- ETH Zürich, Department of Health Sciences and Technology & Institute of Molecular Systems Biology, Zürich, Switzerland
| | - Michael Welsh
- Uppsala University, Department of Medical Cell Biology, Biomedical Center, Uppsala, Sweden
| | - Lena Claesson-Welsh
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala, Sweden.
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184
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Sparber F, Dolowschiak T, Mertens S, Lauener L, Clausen BE, Joller N, Stoitzner P, Tussiwand R, LeibundGut-Landmann S. Langerin+ DCs regulate innate IL-17 production in the oral mucosa during Candida albicans-mediated infection. PLoS Pathog 2018; 14:e1007069. [PMID: 29782555 PMCID: PMC5983869 DOI: 10.1371/journal.ppat.1007069] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 06/01/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022] Open
Abstract
The opportunistic fungal pathogen Candida albicans frequently causes diseases such as oropharyngeal candidiasis (OPC) in immunocompromised individuals. Although it is well appreciated that the cytokine IL-17 is crucial for protective immunity against OPC, the cellular source and the regulation of this cytokine during infection are still a matter of debate. Here, we directly visualized IL-17 production in the tongue of experimentally infected mice, thereby demonstrating that this key cytokine is expressed by three complementary subsets of CD90+ leukocytes: RAG-dependent αβ and γδ T cells, as well as RAG-independent ILCs. To determine the regulation of IL-17 production at the onset of OPC, we investigated in detail the myeloid compartment of the tongue and found a heterogeneous and dynamic mononuclear phagocyte (MNP) network in the infected tongue that consists of Zbtb46-Langerin- macrophages, Zbtb46+Langerin+ dendritic cells (DCs) and Ly6C+ inflammatory monocytes. Of those, the Langerin+ DC population stands out by its unique capacity to co-produce the cytokines IL-1β, IL-6 and IL-23, all of which promote IL-17 induction in response to C. albicans in the oral mucosa. The critical role of Langerin+ DCs for the innate IL-17 response was confirmed by depletion of this cellular subset in vivo, which compromised IL-17 induction during OPC. In conclusion, our work revealed key regulatory factors and their cellular sources of innate IL-17-dependent antifungal immunity in the oral mucosa.
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Affiliation(s)
- Florian Sparber
- Section of Immunology, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland
| | - Tamas Dolowschiak
- Institute of Experimental Immunology, University of Zürich, Zürich, Switzerland
| | - Sarah Mertens
- Section of Immunology, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland
| | - Laura Lauener
- Section of Immunology, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland
| | - Björn E. Clausen
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Nicole Joller
- Institute of Experimental Immunology, University of Zürich, Zürich, Switzerland
| | - Patrizia Stoitzner
- Department of Dermatology, Venereology & Allergology, Medical University Innsbruck, Innsbruck, Austria
| | - Roxane Tussiwand
- Department of Biomedicine, University of Basel, Basel, Switzerland
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185
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A cytokine network involving IL-36γ, IL-23, and IL-22 promotes antimicrobial defense and recovery from intestinal barrier damage. Proc Natl Acad Sci U S A 2018; 115:E5076-E5085. [PMID: 29760082 DOI: 10.1073/pnas.1718902115] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The gut epithelium acts to separate host immune cells from unrestricted interactions with the microbiota and other environmental stimuli. In response to epithelial damage or dysfunction, immune cells are activated to produce interleukin (IL)-22, which is involved in repair and protection of barrier surfaces. However, the specific pathways leading to IL-22 and associated antimicrobial peptide (AMP) production in response to intestinal tissue damage remain incompletely understood. Here, we define a critical IL-36/IL-23/IL-22 cytokine network that is instrumental for AMP production and host defense. Using a murine model of intestinal damage and repair, we show that IL-36γ is a potent inducer of IL-23 both in vitro and in vivo. IL-36γ-induced IL-23 required Notch2-dependent (CD11b+CD103+) dendritic cells (DCs), but not Batf3-dependent (CD11b-CD103+) DCs or CSF1R-dependent macrophages. The intracellular signaling cascade linking IL-36 receptor (IL-36R) to IL-23 production by DCs involved MyD88 and the NF-κB subunits c-Rel and p50. Consistent with in vitro observations, IL-36R- and IL-36γ-deficient mice exhibited dramatically reduced IL-23, IL-22, and AMP levels, and consequently failed to recover from acute intestinal damage. Interestingly, impaired recovery of mice deficient in IL-36R or IL-36γ could be rescued by treatment with exogenous IL-23. This recovery was accompanied by a restoration of IL-22 and AMP expression in the colon. Collectively, these data define a cytokine network involving IL-36γ, IL-23, and IL-22 that is activated in response to intestinal barrier damage and involved in providing critical host defense.
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186
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Norton KA, Jin K, Popel AS. Modeling triple-negative breast cancer heterogeneity: Effects of stromal macrophages, fibroblasts and tumor vasculature. J Theor Biol 2018; 452:56-68. [PMID: 29750999 DOI: 10.1016/j.jtbi.2018.05.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 04/13/2018] [Accepted: 05/03/2018] [Indexed: 12/20/2022]
Abstract
A hallmark of breast tumors is its spatial heterogeneity that includes its distribution of cancer stem cells and progenitor cells, but also heterogeneity in the tumor microenvironment. In this study we focus on the contributions of stromal cells, specifically macrophages, fibroblasts, and endothelial cells on tumor progression. We develop a computational model of triple-negative breast cancer based on our previous work and expand it to include macrophage infiltration, fibroblasts, and angiogenesis. In vitro studies have shown that the secretomes of tumor-educated macrophages and fibroblasts increase both the migration and proliferation rates of triple-negative breast cancer cells. In vivo studies also demonstrated that blocking signaling of selected secreted factors inhibits tumor growth and metastasis in mouse xenograft models. We investigate the influences of increased migration and proliferation rates on tumor growth, the effect of the presence on fibroblasts or macrophages on growth and morphology, and the contributions of macrophage infiltration on tumor growth. We find that while the presence of macrophages increases overall tumor growth, the increase in macrophage infiltration does not substantially increase tumor growth and can even stifle tumor growth at excessive rates.
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Affiliation(s)
| | - Kideok Jin
- Department of Biomedical Engineering; Department of Pharmaceutical Science, Albany College of Pharmacy and Health Science, USA
| | - Aleksander S Popel
- Department of Biomedical Engineering; Department of Oncology and the Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, USA
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187
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Zins K, Heller G, Mayerhofer M, Schreiber M, Abraham D. Differential prognostic impact of interleukin-34 mRNA expression and infiltrating immune cell composition in intrinsic breast cancer subtypes. Oncotarget 2018; 9:23126-23148. [PMID: 29796177 PMCID: PMC5955405 DOI: 10.18632/oncotarget.25226] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 04/05/2018] [Indexed: 12/14/2022] Open
Abstract
Interleukin-34 (IL-34) is a ligand for the CSF-1R and has also two additional receptors, PTPRZ1 and syndecan-1. IL-34 plays a role in innate immunity, inflammation, and cancer. However, the role of IL-34 in breast cancer is still ill-defined. We analyzed IL-34 mRNA expression in breast cancer cell lines and breast cancer patients and applied established computational approaches (CIBERSORT, ESTIMATE, TIMER, TCIA), to analyze gene expression data from The Cancer Genome Atlas (TCGA). Expression of IL-34 was associated with a favorable prognosis in luminal and HER2 but not basal breast cancer patients. Gene expression of CSF-1 and CSF-1R was strongly associated with myeloid cell infiltration, while we found no or only weak correlations between IL-34, PTPRZ1, syndecan-1 and myeloid cells. In vitro experiments showed that tyrosine phosphorylation of CSF-1R, ERK, and FAK and cell migration are differentially regulated by IL-34 and CSF-1 in breast cancer cell lines. Collectively, our data suggest that correlation of IL-34 gene expression with survival is dependent on the molecular breast cancer subtype. Furthermore, IL-34 is not associated with myeloid cell infiltration and directly regulates breast cancer cell migration and signaling.
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Affiliation(s)
- Karin Zins
- Division of Cell and Developmental Biology, Center for Anatomy and Cell Biology, Medical University of Vienna, A-1090 Vienna, Austria
| | - Gerwin Heller
- Department of Medicine I, Clinical Division of Oncology, Medical University of Vienna, A-1090 Vienna, Austria.,Comprehensive Cancer Center Vienna, A-1090 Vienna, Austria
| | - Mathias Mayerhofer
- Division of Cell and Developmental Biology, Center for Anatomy and Cell Biology, Medical University of Vienna, A-1090 Vienna, Austria
| | - Martin Schreiber
- Department of Obstetrics and Gynecology, Medical University of Vienna, A-1090 Vienna, Austria.,Comprehensive Cancer Center Vienna, A-1090 Vienna, Austria
| | - Dietmar Abraham
- Division of Cell and Developmental Biology, Center for Anatomy and Cell Biology, Medical University of Vienna, A-1090 Vienna, Austria.,Comprehensive Cancer Center Vienna, A-1090 Vienna, Austria
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188
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Guerriero JL. Macrophages: The Road Less Traveled, Changing Anticancer Therapy. Trends Mol Med 2018; 24:472-489. [PMID: 29655673 PMCID: PMC5927840 DOI: 10.1016/j.molmed.2018.03.006] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/04/2018] [Accepted: 03/12/2018] [Indexed: 12/13/2022]
Abstract
Macrophages are present in all vertebrate tissues and have emerged as multifarious cells with complex roles in development, tissue homeostasis, and disease. Macrophages are a major constituent of the tumor microenvironment, where they either promote or inhibit tumorigenesis and metastasis depending on their state. Successful preclinical strategies to target macrophages for anticancer therapy are now being evaluated in the clinic and provide proof of concept that targeting macrophages may enhance current therapies; however, clinical success has been limited. This review discusses the promise of targeting macrophages for anticancer therapy, yet highlights how much is unknown regarding their ontogeny, regulation, and tissue-specific diversity. Further work might identify subsets of macrophages within different tissues, which could reveal novel therapeutic opportunities for anticancer therapy.
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Affiliation(s)
- Jennifer L Guerriero
- Department of Medical Oncology, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA.
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189
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Kurdi AT, Glavey SV, Bezman NA, Jhatakia A, Guerriero JL, Manier S, Moschetta M, Mishima Y, Roccaro A, Detappe A, Liu CJ, Sacco A, Huynh D, Tai YT, Robbins MD, Azzi J, Ghobrial IM. Antibody-Dependent Cellular Phagocytosis by Macrophages is a Novel Mechanism of Action of Elotuzumab. Mol Cancer Ther 2018; 17:1454-1463. [PMID: 29654064 DOI: 10.1158/1535-7163.mct-17-0998] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 01/13/2018] [Accepted: 04/06/2018] [Indexed: 12/11/2022]
Abstract
Elotuzumab, a recently approved antibody for the treatment of multiple myeloma, has been shown to stimulate Fcγ receptor (FcγR)-mediated antibody-dependent cellular cytotoxicity by natural killer (NK) cells toward myeloma cells. The modulatory effects of elotuzumab on other effector cells in the tumor microenvironment, however, has not been fully explored. Antibody-dependent cellular phagocytosis (ADCP) is a mechanism by which macrophages contribute to antitumor potency of monoclonal antibodies. Herein, we studied the NK cell independent effect of elotuzumab on tumor-associated macrophages using a xenograft tumor model deficient in NK and adaptive immune cells. We demonstrate significant antitumor efficacy of single-agent elotuzumab in immunocompromised xenograft models of multiple myeloma, which is in part mediated by Fc-FcγR interaction of elotuzumab with macrophages. Elotuzumab is shown in this study to induce phenotypic activation of macrophages in vivo and mediates ADCP of myeloma cells though a FcγR-dependent manner in vitro Together, these findings propose a novel immune-mediated mechanism by which elotuzumab exerts anti-myeloma activity and helps to provide rationale for combination therapies that can enhance macrophage activity. Mol Cancer Ther; 17(7); 1454-63. ©2018 AACR.
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Affiliation(s)
- Ahmed T Kurdi
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Siobhan V Glavey
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | | | | | | | - Salomon Manier
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Michele Moschetta
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Yuji Mishima
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Aldo Roccaro
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.,ASST Spedali Civili di Brescia, Clinical Research Development and Phase I Unit, Laboratorio CREA, Brescia, BS, Italy
| | - Alexandre Detappe
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Chia-Jen Liu
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Antonio Sacco
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.,ASST Spedali Civili di Brescia, Clinical Research Development and Phase I Unit, Laboratorio CREA, Brescia, BS, Italy
| | - Daisy Huynh
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Yu-Tzu Tai
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | | | - Jamil Azzi
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Children's Hospital, Boston, Massachusetts.
| | - Irene M Ghobrial
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.
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190
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Vitamin A–coupled liposomes containing siRNA against HSP47 ameliorate skin fibrosis in chronic graft-versus-host disease. Blood 2018; 131:1476-1485. [DOI: 10.1182/blood-2017-04-779934] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 01/16/2018] [Indexed: 02/07/2023] Open
Abstract
Key Points
HSP47+ myofibroblasts are accumulated in the fibrotic lesions of chronic GVHD and promote fibrosis in a CSF-1R+ macrophage-dependent manner. Vitamin A–coupled liposomes containing HSP47 siRNA abrogate HSP47 expression in myofibroblasts and ameliorate fibrosis in chronic GVHD.
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191
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Sehgal A, Donaldson DS, Pridans C, Sauter KA, Hume DA, Mabbott NA. The role of CSF1R-dependent macrophages in control of the intestinal stem-cell niche. Nat Commun 2018; 9:1272. [PMID: 29593242 PMCID: PMC5871851 DOI: 10.1038/s41467-018-03638-6] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 03/02/2018] [Indexed: 12/30/2022] Open
Abstract
Colony-stimulating factor 1 (CSF1) controls the growth and differentiation of macrophages.CSF1R signaling has been implicated in the maintenance of the intestinal stem cell niche and differentiation of Paneth cells, but evidence of expression of CSF1R within the crypt is equivocal. Here we show that CSF1R-dependent macrophages influence intestinal epithelial differentiation and homeostasis. In the intestinal lamina propria CSF1R mRNA expression is restricted to macrophages which are intimately associated with the crypt epithelium, and is undetectable in Paneth cells. Macrophage ablation following CSF1R blockade affects Paneth cell differentiation and leads to a reduction of Lgr5+ intestinal stem cells. The disturbances to the crypt caused by macrophage depletion adversely affect the subsequent differentiation of intestinal epithelial cell lineages. Goblet cell density is enhanced, whereas the development of M cells in Peyer's patches is impeded. We suggest that modification of the phenotype or abundance of macrophages in the gut wall alters the development of the intestinal epithelium and the ability to sample gut antigens.
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Affiliation(s)
- Anuj Sehgal
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - David S Donaldson
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Clare Pridans
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
- MRC Centre for Inflammation Research, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Kristin A Sauter
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - David A Hume
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
- MRC Centre for Inflammation Research, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
- Mater Research-University of Queensland, Translational Research Institute, Woolloongabba, QL, 4102, Australia
| | - Neil A Mabbott
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
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192
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Liu YH, Ding Y, Gao CC, Li LS, Wang YX, Xu JD. Functional macrophages and gastrointestinal disorders. World J Gastroenterol 2018; 24:1181-1195. [PMID: 29568199 PMCID: PMC5859221 DOI: 10.3748/wjg.v24.i11.1181] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 02/12/2018] [Accepted: 02/25/2018] [Indexed: 02/06/2023] Open
Abstract
Macrophages (MΦ) differentiate from blood monocytes and participate in innate and adaptive immunity. Because of their abilities to recognize pathogens and activate bactericidal activities, MΦ are always discovered at the site of immune defense. MΦ in the intestine are unique, such that in the healthy intestine, they possess complex mechanisms to protect the gut from inflammation. In these complex mechanisms, they produce anti-inflammatory cytokines, such as interleukin-10 and transforming growth factor-β, and inhibit the inflammatory pathways mediated by Toll-like receptors. It has been demonstrated that resident MΦ play a crucial role in maintaining intestinal homeostasis, and they can be recognized by their unique markers. Nonetheless, in the inflamed intestine, the function of MΦ will change because of environmental variation, which may be one of the mechanisms of inflammatory bowel disease (IBD). We provide further explanation about these mechanisms in our review. In addition, we review recent discoveries that MΦ may be involved in the development of gastrointestinal tumors. We will highlight the possible therapeutic targets for the management of IBD and gastrointestinal tumors, and we also discuss why more details are needed to fully understand all other effects of intestinal MΦ.
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Affiliation(s)
- Yue-Hong Liu
- School of Basic Medical Science, Beijing Capital Medical University, Beijing 100069, China
| | - Yue Ding
- School of Basic Medical Science, Beijing Capital Medical University, Beijing 100069, China
| | - Chen-Chen Gao
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Capital Medical University, Beijing 100069, China
| | - Li-Sheng Li
- Function Platform Center, School of Basic Medical Science, Capital Medical University, Beijing 100069, China
| | - Yue-Xiu Wang
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China
| | - Jing-Dong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Capital Medical University, Beijing 100069, China
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193
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MacDonald KPA, Betts BC, Couriel D. Reprint of: Emerging Therapeutics for the Control of Chronic Graft-versus-Host Disease. Biol Blood Marrow Transplant 2018; 24:S7-S14. [PMID: 29425517 DOI: 10.1016/j.bbmt.2017.12.788] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/03/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Kelli P A MacDonald
- Department of Immunology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.
| | - Brian C Betts
- Department of Blood and Marrow Transplantation and Cellular Immunotherapy, Moffit Cancer Center, Tampa, Florida
| | - Daniel Couriel
- Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah
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194
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Pridans C, Sauter KA, Irvine KM, Davis GM, Lefevre L, Raper A, Rojo R, Nirmal AJ, Beard P, Cheeseman M, Hume DA. Macrophage colony-stimulating factor increases hepatic macrophage content, liver growth, and lipid accumulation in neonatal rats. Am J Physiol Gastrointest Liver Physiol 2018; 314:G388-G398. [PMID: 29351395 PMCID: PMC5899243 DOI: 10.1152/ajpgi.00343.2017] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Signaling via the colony-stimulating factor 1 receptor (CSF1R) controls the survival, differentiation, and proliferation of macrophages. Mutations in CSF1 or CSF1R in mice and rats have pleiotropic effects on postnatal somatic growth. We tested the possible application of pig CSF1-Fc fusion protein as a therapy for low birth weight (LBW) at term, using a model based on maternal dexamethasone treatment in rats. Neonatal CSF1-Fc treatment did not alter somatic growth and did not increase the blood monocyte count. Instead, there was a substantial increase in the size of liver in both control and LBW rats, and the treatment greatly exacerbated lipid droplet accumulation seen in the dexamethasone LBW model. These effects were reversed upon cessation of treatment. Transcriptional profiling of the livers supported histochemical evidence of a large increase in macrophages with a resident Kupffer cell phenotype and revealed increased expression of many genes implicated in lipid droplet formation. There was no further increase in hepatocyte proliferation over the already high rates in neonatal liver. In conclusion, treatment of neonatal rats with CSF1-Fc caused an increase in liver size and hepatic lipid accumulation, due to Kupffer cell expansion and/or activation rather than hepatocyte proliferation. Increased liver macrophage numbers and expression of endocytic receptors could mitigate defective clearance functions in neonates. NEW & NOTEWORTHY This study is based on extensive studies in mice and pigs of the role of CSF1/CSF1R in macrophage development and postnatal growth. We extended the study to neonatal rats as a possible therapy for low birth weight. Unlike our previous studies in mice and pigs, there was no increase in hepatocyte proliferation and no increase in monocyte numbers. Instead, neonatal rats treated with CSF1 displayed reversible hepatic steatosis and Kupffer cell expansion.
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Affiliation(s)
- Clare Pridans
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom,2Medical Research Council Centre for Inflammation Research, University of Edinburgh, The Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Kristin A. Sauter
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Katharine M. Irvine
- 3Mater Research-University of Queensland, Translational Research Institute, Woolloongabba, Australia
| | - Gemma M. Davis
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Lucas Lefevre
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Anna Raper
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Rocio Rojo
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Ajit J. Nirmal
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Philippa Beard
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom,4The Pirbright Institute, Surrey, United Kingdom
| | - Michael Cheeseman
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - David A. Hume
- 1The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom,2Medical Research Council Centre for Inflammation Research, University of Edinburgh, The Queen's Medical Research Institute, Edinburgh, United Kingdom,3Mater Research-University of Queensland, Translational Research Institute, Woolloongabba, Australia
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195
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Zhou X, Moore BB. Location or origin? What is critical for macrophage propagation of lung fibrosis? Eur Respir J 2018; 51:51/3/1800103. [PMID: 29496789 DOI: 10.1183/13993003.00103-2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/20/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Xiaofeng Zhou
- Dept of Internal Medicine, Pulmonary and Critical Care Medicine Division, University of Michigan, Ann Arbor, MI, USA
| | - Bethany B Moore
- Dept of Internal Medicine, Pulmonary and Critical Care Medicine Division, University of Michigan, Ann Arbor, MI, USA.,Dept of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
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196
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Bellomo A, Gentek R, Bajénoff M, Baratin M. Lymph node macrophages: Scavengers, immune sentinels and trophic effectors. Cell Immunol 2018; 330:168-174. [PMID: 29397903 DOI: 10.1016/j.cellimm.2018.01.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/10/2018] [Accepted: 01/14/2018] [Indexed: 01/02/2023]
Abstract
Lymph nodes (LN) are secondary lymphoid organs dispersed throughout the body that filter lymph and assist the immune system in mounting immune responses. These functions are supported by a complex stromal microarchitecture composed of mesenchymal and vascular elements. Different subsets of macrophages (MΦ) reside in the LN and are endowed with immune and trophic functions. Here we review these different subsets with particular emphasis on the recently described T cell zone MΦ. We also address the potential crosstalk between LN stromal cells and MΦ, proposing that the former constitute niches for the latter by supplying factors required for their specification, survival and turnover. In turn, MΦ could inform their stromal partners about the immune status of the LN and orchestrate the remodelling of its microanatomy during immune responses.
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Affiliation(s)
- Alicia Bellomo
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Rebecca Gentek
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Marc Bajénoff
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Myriam Baratin
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.
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197
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Hawley CA, Rojo R, Raper A, Sauter KA, Lisowski ZM, Grabert K, Bain CC, Davis GM, Louwe PA, Ostrowski MC, Hume DA, Pridans C, Jenkins SJ. Csf1r-mApple Transgene Expression and Ligand Binding In Vivo Reveal Dynamics of CSF1R Expression within the Mononuclear Phagocyte System. THE JOURNAL OF IMMUNOLOGY 2018; 200:2209-2223. [PMID: 29440354 PMCID: PMC5834790 DOI: 10.4049/jimmunol.1701488] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/17/2018] [Indexed: 01/18/2023]
Abstract
CSF1 is the primary growth factor controlling macrophage numbers, but whether expression of the CSF1 receptor differs between discrete populations of mononuclear phagocytes remains unclear. We have generated a Csf1r-mApple transgenic fluorescent reporter mouse that, in combination with lineage tracing, Alexa Fluor 647–labeled CSF1-Fc and CSF1, and a modified ΔCsf1–enhanced cyan fluorescent protein (ECFP) transgene that lacks a 150 bp segment of the distal promoter, we have used to dissect the differentiation and CSF1 responsiveness of mononuclear phagocyte populations in situ. Consistent with previous Csf1r-driven reporter lines, Csf1r-mApple was expressed in blood monocytes and at higher levels in tissue macrophages, and was readily detectable in whole mounts or with multiphoton microscopy. In the liver and peritoneal cavity, uptake of labeled CSF1 largely reflected transgene expression, with greater receptor activity in mature macrophages than monocytes and tissue-specific expression in conventional dendritic cells. However, CSF1 uptake also differed between subsets of monocytes and discrete populations of tissue macrophages, which in macrophages correlated with their level of dependence on CSF1 receptor signaling for survival rather than degree of transgene expression. A double ΔCsf1r-ECFP-Csf1r-mApple transgenic mouse distinguished subpopulations of microglia in the brain, and permitted imaging of interstitial macrophages distinct from alveolar macrophages, and pulmonary monocytes and conventional dendritic cells. The Csf1r-mApple mice and fluorescently labeled CSF1 will be valuable resources for the study of macrophage and CSF1 biology, which are compatible with existing EGFP-based reporter lines.
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Affiliation(s)
- Catherine A Hawley
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Rocio Rojo
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Anna Raper
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Kristin A Sauter
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Zofia M Lisowski
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Kathleen Grabert
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Calum C Bain
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Gemma M Davis
- The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom.,Faculty of Life Sciences, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Pieter A Louwe
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Michael C Ostrowski
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425; and
| | - David A Hume
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom.,The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom.,Mater Research-University of Queensland, Translational Research Institute, Woolloongabba, Queensland 4104, Australia
| | - Clare Pridans
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom.,The Roslin Institute, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - Stephen J Jenkins
- Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom;
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198
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Hoves S, Ooi CH, Wolter C, Sade H, Bissinger S, Schmittnaegel M, Ast O, Giusti AM, Wartha K, Runza V, Xu W, Kienast Y, Cannarile MA, Levitsky H, Romagnoli S, De Palma M, Rüttinger D, Ries CH. Rapid activation of tumor-associated macrophages boosts preexisting tumor immunity. J Exp Med 2018; 215:859-876. [PMID: 29436396 PMCID: PMC5839760 DOI: 10.1084/jem.20171440] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 11/20/2017] [Accepted: 12/21/2017] [Indexed: 12/14/2022] Open
Abstract
Combined CSF-1R+CD40 antibody therapy induces profound and rapid TAM reprogramming before TAMs are eliminated. This combination of cancer immunotherapies tailored to activate the innate immune system creates an inflamed tumor microenvironment ultimately leading to tumor eradication by the adaptive immunity. Depletion of immunosuppressive tumor-associated macrophages (TAMs) or reprogramming toward a proinflammatory activation state represent different strategies to therapeutically target this abundant myeloid population. In this study, we report that inhibition of colony-stimulating factor-1 receptor (CSF-1R) signaling sensitizes TAMs to profound and rapid reprogramming in the presence of a CD40 agonist before their depletion. Despite the short-lived nature of macrophage hyperactivation, combined CSF-1R+CD40 stimulation of macrophages is sufficient to create a proinflammatory tumor milieu that reinvigorates an effective T cell response in transplanted tumors that are either responsive or insensitive to immune checkpoint blockade. The central role of macrophages in regulating preexisting immunity is substantiated by depletion experiments, transcriptome analysis of ex vivo sorted TAMs, and gene expression profiling of whole tumor lysates at an early treatment time point. This approach enabled the identification of specific combination-induced changes among the pleiotropic activation spectrum of the CD40 agonist. In patients, CD40 expression on human TAMs was detected in mesothelioma and colorectal adenocarcinoma.
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Affiliation(s)
- Sabine Hoves
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Chia-Huey Ooi
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany.,Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel, Basel, Switzerland
| | - Carsten Wolter
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Hadassah Sade
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Stefan Bissinger
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Martina Schmittnaegel
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Oliver Ast
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland
| | - Anna M Giusti
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland
| | - Katharina Wartha
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Valeria Runza
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Wei Xu
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland
| | - Yvonne Kienast
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Michael A Cannarile
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Hyam Levitsky
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland
| | - Solange Romagnoli
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Michele De Palma
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Dominik Rüttinger
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Carola H Ries
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
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199
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Tissue-resident macrophages as replicative niches for intracellular pathogens. Emerg Top Life Sci 2017; 1:621-626. [PMID: 33525847 DOI: 10.1042/etls20170110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/17/2017] [Accepted: 11/21/2017] [Indexed: 12/24/2022]
Abstract
Macrophages are considered a critical component of innate immunity against intracellular pathogens. Although macrophages have historically been viewed as monocyte-derived and terminally differentiated cells, recent progress has revealed that many tissue-resident macrophages are embryonically seeded, self-renewed, and perform homeostatic functions associated with M2-like activation programs. There is evidence that tissue-resident macrophages (TRMs) maintain their M2-like phenotype even in an infection-driven pro-inflammatory environment. In this regard, several intracellular pathogens are shown to exploit M2-like TRMs as replicative niches to evade pathogen-specific immunity. This knowledge provides a new perspective to understand the chronicity of infections and develop therapeutic strategies which can selectively target TRMs.
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200
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Lee SH, Charmoy M, Romano A, Paun A, Chaves MM, Cope FO, Ralph DA, Sacks DL. Mannose receptor high, M2 dermal macrophages mediate nonhealing Leishmania major infection in a Th1 immune environment. J Exp Med 2017; 215:357-375. [PMID: 29247046 PMCID: PMC5748861 DOI: 10.1084/jem.20171389] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 11/10/2017] [Indexed: 12/24/2022] Open
Abstract
The origin and functional specialization of dermal macrophages in cutaneous infections have been little studied. In this paper, we show that a strain of Leishmania major (L. major Seidman [LmSd]) that produces nonhealing cutaneous lesions in conventionally resistant C57BL/6 mice was more efficiently taken up by M2-polarized bone marrow (BM)-derived macrophages (BMDMs) in vitro and by mannose receptor (MR)hi dermal macrophages in vivo compared with a healing strain (L. major Friedlin V1). Both in steady and in T helper type 1 (Th1) cell-driven inflammatory states, the MRhi dermal macrophages showed M2 characteristics. The dermal macrophages were radio resistant and not replaced by monocytes or adult BM-derived cells during infection, but were locally maintained by IL-4 and IL-10. Notably, the favored infection of M2 BMDMs by LmSd in vitro was MR dependent, and genetic deletion of MR or selective depletion of MRhi dermal macrophages by anti-CSF-1 receptor antibody reversed the nonhealing phenotype. We conclude that embryonic-derived, MRhi dermal macrophages are permissive for parasite growth even in a strong Th1-immune environment, and the preferential infection of these cells plays a crucial role in the severity of cutaneous disease.
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Affiliation(s)
- Sang Hun Lee
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Melanie Charmoy
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Audrey Romano
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Andrea Paun
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Mariana M Chaves
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | | | | | - David L Sacks
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
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