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Vialard F, Allaeys I, Dong G, Phan MP, Singh U, Hébert MJ, Dieudé M, Langlais D, Boilard E, Labbé DP, Olivier M. Thermoneutrality and severe malaria: investigating the effect of warmer environmental temperatures on the inflammatory response and disease progression. Front Immunol 2023; 14:1128466. [PMID: 37350957 PMCID: PMC10283000 DOI: 10.3389/fimmu.2023.1128466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 05/19/2023] [Indexed: 06/24/2023] Open
Abstract
Introduction Most studies using murine disease models are conducted at housing temperatures (20 - 22°C) that are sub-optimal (ST) for mice, eliciting changes in metabolism and response to disease. Experiments performed at a thermoneutral temperature (TT; 28 - 31°C) have revealed an altered immune response to pathogens and experimental treatments in murine disease model that have implications for their translation to clinical research. How such conditions affect the inflammatory response to infection with Plasmodium berghei ANKA (PbA) and disease progression is unknown. We hypothesized that changes in environmental temperature modulate immune cells and modify host response to malaria disease. To test this hypothesis, we conducted experiments to determine: (1) the inflammatory response to malarial agents injection in a peritonitis model and (2) disease progression in PbA-infected mice at TT compared to ST. Methods In one study, acclimatized mice were injected intraperitoneally with native hemozoin (nHZ) or Leishmania at TT (28 - 31°C) or ST, and immune cells, cytokine, and extracellular vesicle (EV) profiles were determined from the peritoneal cavity (PEC) fluid. In another study, PbA-infected mice were monitored until end-point (i.e. experimental malaria score ≥4). Results We found that Leishmania injection resulted in decreased cell recruitment and higher phagocytosis of nHZ in mice housed at TT. We found 398 upregulated and 293 downregulated proinflammatory genes in mice injected with nHZ, at both temperatures. We report the presence of host-derived EVs never reported before in a murine parasitic murine model at both temperatures. We observed metabolic changes in mice housed at TT, but these did not result to noticeable changes in disease progression compared to ST. Discussion To our knowledge, these experiments are the first to investigate the effect of thermoneutrality on a malaria murine model. We found important metabolic difference in mice housed at TT. Our results offer insights on how thermoneutrality might impact a severe malaria murine model and directions for more targeted investigations.
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Affiliation(s)
- Fiorella Vialard
- Infectious Diseases and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Isabelle Allaeys
- Centre Hospitalier Universitaire de Québec, Université Laval, Québec, QC, Canada
| | - George Dong
- Infectious Diseases and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
| | - Minh Phuong Phan
- Infectious Diseases and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
| | - Urvashi Singh
- Department of Human Genetics, McGill University Genome Centre, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Marie Josée Hébert
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal, Montréal, QC, Canada
| | - Mélanie Dieudé
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal, Montréal, QC, Canada
- Département Microbiologie, Infectiologie et Immunologie, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - David Langlais
- Department of Human Genetics, McGill University Genome Centre, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Eric Boilard
- Centre Hospitalier Universitaire de Québec, Université Laval, Québec, QC, Canada
| | - David P. Labbé
- Infectious Diseases and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Division of Urology, Department of Surgery, McGill University, Montréal, QC, Canada
| | - Martin Olivier
- Infectious Diseases and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
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Londregan J, Maslanka J, Goldman N, Somerville J, Riggs JE. IgD ligation allows peritoneal cavity B cell proliferation. Immunobiology 2022; 227:152181. [PMID: 35077917 PMCID: PMC8918009 DOI: 10.1016/j.imbio.2022.152181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/24/2021] [Accepted: 01/17/2022] [Indexed: 11/19/2022]
Abstract
Atypical cytokine production and immune cell subset ratios, particularly those that include high proportions of macrophages, characterize tumor microenvironments (TMEs). TMEs can be modeled by culturing peritoneal cavity (PerC) cells which have a high macrophage to lymphocyte ratio. With TCR or BCR ligation, PerC lymphocyte proliferation is tempered by macrophages. However, PHA (T cells) and anti-CD40 (B cells) are activators that induce proliferation. Herein, we report that ligating IgD, in contrast to IgM, triggers PerC B cell proliferation. IL-4 addition enhanced the IgD response for BALB/c PerC B cells but suppressed that of C57BL/6 mice. Intriguingly, concurrent ligation of IgD and CD3ε rescued a PerC T cell proliferative response. These results serve to expand the list of targets for promoting cellular and humoral immunity in conditions that model macrophage-rich TMEs.
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Affiliation(s)
| | - Jeffrey Maslanka
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - Naomi Goldman
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - John Somerville
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - James E Riggs
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA.
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Moysés CRS, Alvares-Saraiva AM, Perez EC, Spadacci-Morena DD, Vidôto da Costa LF, Xavier JG, Lallo MA. Mice with genetic and induced B-cell deficiency as a model for disseminated encephalitozoonosis. Comp Immunol Microbiol Infect Dis 2022; 81:101742. [PMID: 35074660 DOI: 10.1016/j.cimid.2021.101742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/19/2022]
Abstract
Encephalitozoon cuniculi, an intracellular pathogen, lives in a balanced relationship with immunocompetent individuals based on the activity of T lymphocytes. We previously highlighted the greater susceptibility of B-1 cell-deficient mice (XID mice) to encephalitozoonosis. This study aimed to develop a model of disseminated and severe encephalitozoonosis in mice with combined immunodeficiency to elucidate the role of B cells. To address this objective, cyclophosphamide (Cy)-treated BALB/c and XID mice were inoculated with E. cuniculi, followed by the evaluation of the immune response and histopathological lesions. Immunosuppressed BALB/c mice manifested no clinical signs with an increase in the populations of T lymphocytes and macrophages in the spleen. Immunosuppressed and infected XID mice revealed elevated T cells, macrophages populations, and pro-inflammatory cytokines levels (IFN-γ, TNF-α, and IL-6) with the presence of abdominal effusion and lesions in multiple organs. These clinical characteristics are associated with extensive and severe encephalitozoonosis. The symptoms and lesion size were reduced, whereas B-2 and CD4+ T cells populations were increased in the spleen by transferring B-2 cells adoptive to XID mice. Moreover, B-1 cells adoptive transfer upregulated the peritoneal populations of B-2 cells and macrophages but not T lymphocytes and decreased the symptoms. Herein, we speculated the consistency in the development of severe and disseminated encephalitozoonosis in mice with genetic deficiency of Bruton's tyrosine kinase (Btk) associated with Cy immunosuppression develop with that of the models with T cell deficiency. Taken together, these data emphasized the crucial role of B cells in the protective immune response against encephalitozoonosis.
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Affiliation(s)
- Carla Renata Serantoni Moysés
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil
| | - Anuska Marcelino Alvares-Saraiva
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil; Laboratório de Fisiopatologia, Instituto Butantan, Av. Vital Brasil 1500, CEP 05503-900 São Paulo, SP, Brazil; Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, Rua Galvão Bueno, 868, CEP 01506-000 São Paulo, SP, Brazil
| | - Elizabeth Cristina Perez
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil
| | | | - Lidiana Flora Vidôto da Costa
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil
| | - José Guilherme Xavier
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil
| | - Maria Anete Lallo
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua José Maria Whitaker 290, CEP 05622-001 São Paulo, SP, Brazil.
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Mačák Kubašková T, Mudroňová D, Gergeľ-Čechová M, Hrčková G. Differential Sensitivity of Myeloid and Lymphoid Cell Populations to Apoptosis in Peritoneal Cavity of Mice with Model Larval Mesocestoides Vogae Infection. Helminthologia 2019; 56:183-95. [PMID: 31662690 DOI: 10.2478/helm-2019-0021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 05/22/2019] [Indexed: 11/20/2022] Open
Abstract
The metacestode stage of the tapeworm Mesocestoides vogae (M. vogae) has the ability of asexual growth in the peritoneal cavity of rodents and other intermediate hosts without restriction. Early immunological events have decisive role in the establishment of infection. In the present study we investigated the kinetic of myeloid and lymphoid cell populations and the proportions of cells undergoing apoptosis in peritoneal cavities of mice within the first month after oral infection with M. vogae larvae. Proportions of cell phenotypes and apoptotic cells were examined by flow cytometry and by microscopical analysis of cells following May/Grünwald staining and fluorescent stain Hoechst 33234, respectively. Total numbers of peritoneal cells increased and their distribution changed towards accumulation of myelo-monocytic cell lineage in the account of reduced proportions of lymphoid cells. CD4+ T cell subpopulations were more abundant than CD8+ and their proportions elevated within two weeks post infection (p.i.) which was followed by a significant decline. Expression level of CD11c marker on myelo-monocytic cells revealed phenotype heterogeneity and proportions of cells with low and medium expression elevated from day 14 p.i. along with concurrent very low presence of CD11chigh phenotype. Lymphoid cell population was highly resistant to apoptosis but elevated proportions of myeloid cells were in early/late stage of apoptosis. Apoptosis was detected in a higher number of adherent cells from day 14 p.i. onwards as evidenced by nuclear fluorescent staining. By contrast, cells adherent to larvae, mostly macrophages and eosinophils, did not have fragmented nuclei. Our data demonstrated that apoptosis did not account for diminished population of peritoneal lymphoid cells and substantial proportions of myeloid cells seem to be more susceptible to apoptotic turnover in peritoneal cavity of mice with ongoing M. vogae infection, suggesting their important role in the host-parasite interactions.
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Lomakova YD, Londregan J, Maslanka J, Goldman N, Somerville J, Riggs JE. PHA eludes macrophage suppression to activate CD8 + T cells. Immunobiology 2019; 224:94-101. [PMID: 30446337 DOI: 10.1016/j.imbio.2018.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/12/2018] [Accepted: 10/16/2018] [Indexed: 12/13/2022]
Abstract
Tumors may include a high proportion of immune modulatory cells and molecules that restrain the anti-cancer response. Activation of T cells to eliminate cancer cells within the immune-suppressive tumor microenvironment remains a challenge. We have shown that C57BL/6 J peritoneal cell culture models features of macrophage-dense tumors as TCR ligation fails to activate T cells unless IFNγ is neutralized or iNOS is inhibited. We tested other forms of T cell activation and found phytohemagglutinin (PHA) distinctive in the ability to markedly expand CD8 T cells in this model. IFNγ or iNOS inhibition was not necessary for this response. PHA triggered less IFNγ production and inhibitory PD-L1 expression than TCR ligation. Macrophages and CD44hi T cells bound PHA. Spleen T cell responses to PHA were markedly enhanced by the addition of peritoneal cells revealing that macrophages enhance T cell expansion. That PHA increases CD8 T cell responses within macrophage-dense culture suggests this mitogen might enhance anti-tumor immunity.
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Goldman N, Lomakova YD, Londregan J, Bucknum A, DePierri K, Somerville J, Riggs JE. High macrophage PD-L1 expression not responsible for T cell suppression. Cell Immunol 2017; 324:50-58. [PMID: 29305065 DOI: 10.1016/j.cellimm.2017.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 12/27/2017] [Accepted: 12/27/2017] [Indexed: 12/17/2022]
Abstract
Tumors are often comprised of microenvironments (TMEs) with a high proportion of cells and molecules that regulate immunity. Peritoneal cavity (PerC) cell culture reproduces key features of TMEs as lymphocyte proliferation is suppressed by PerC macrophages (Mϕs). We monitored the expression of T cell stimulatory (Class II MHC, B7) and inhibitory (PD-L1) molecules by PerC APCs before and after culture and report here that IFNγ-driven PD-L1 expression increased markedly on PerC Mϕs after TCR ligation, even more so than seen with direct APC activation by LPS. Considering the high APC composition of and pronounced PD-L1 expression by PerC cells, it was surprising that blocking PD-1/PD-L1 interaction by mAb neutralization or genetic ablation did not relieve suppression. This result parallels TME challenges observed in the clinic and validates the need for further study of this culture model to inform strategies to promote anti-tumor immunity.
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Affiliation(s)
- Naomi Goldman
- Department of Biology, Rider University, Lawrenceville, NJ, 08648, USA
| | | | | | - Amanda Bucknum
- Department of Biology, Rider University, Lawrenceville, NJ, 08648, USA
| | - Kelley DePierri
- Department of Biology, Rider University, Lawrenceville, NJ, 08648, USA
| | - John Somerville
- Department of Biology, Rider University, Lawrenceville, NJ, 08648, USA
| | - James E Riggs
- Department of Biology, Rider University, Lawrenceville, NJ, 08648, USA.
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Abstract
IgM and B-1 cell deficient mice exhibit early C. neoformans dissemination from lungs to brain, but a definitive role for B cells in conferring resistance to C. neoformans dissemination has not been established. To address this question, we developed an intranasal (i.n.) C. neoformans infection model in B and T cell deficient Rag1-/- mice and found they also exhibit earlier fungal dissemination and higher brain CFU than wild-type C57Bl/6 (wild-type) mice. To probe the effect of B cells on fungal dissemination, Rag1-/- mice were given splenic (intravenously) or peritoneal (intraperitoneally) B cells from wild-type mice and infected i.n. with C. neoformans 7 d later. Mice that received B cells had lung histopathology resembling wild type mice 14 d post-infection, and B-1, not B-2 or T cells in their lungs, and serum and lung IgM and IgG 21 d post-infection. Lung CFU were comparable in wild-type, Rag1-/-, and Rag1-/- mice that received B cells 21 d post-infection, but brain CFU were significantly lower in mice that received B cells than Rag1-/- mice that did not. To determine if natural antibody can promote immunity in our model, we measured alveolar macrophage phagocytosis of C. neoformans in Rag1-/- mice treated with naive wild-type IgM-sufficient or sIgM-/- IgM-deficient sera before infection. Compared to IgM-deficient sera, IgM-sufficient sera significantly increased phagocytosis. Our data establish B cells are able to reduce early C. neoformans dissemination in mice and suggest natural IgM may be a key mediator of early antifungal immunity in the lungs.
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Affiliation(s)
- Chad Dufaud
- a Department of Immunology and Microbial Sciences , Scripps Research Institute , La Jolla , CA , USA
| | - Johanna Rivera
- b Division of Infectious Diseases , Albert Einstein College of Medicine and Montefiore Medical Center , Bronx , NY , USA
| | - Soma Rohatgi
- c Department of Biotechnology IIT-Roorkee , Uttarakhand , India
| | - Liise-Anne Pirofski
- a Department of Immunology and Microbial Sciences , Scripps Research Institute , La Jolla , CA , USA.,d Department of Microbiology and Immunology , Albert Einstein College of Medicine , Bronx , NY , USA
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Goldman N, Valiuskyte K, Londregan J, Swider A, Somerville J, Riggs JE. Macrophage regulation of B cell proliferation. Cell Immunol 2017; 314:54-62. [PMID: 28238361 DOI: 10.1016/j.cellimm.2017.02.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/07/2017] [Accepted: 02/12/2017] [Indexed: 12/11/2022]
Abstract
Unlike organized lymphoid tissue, the tumor microenvironment (TME) often includes a high proportion of immunosuppressive macrophages. We model the TME by culturing peritoneal cavity (PerC) cells that naturally have a high macrophage to lymphocyte ratio. Prior studies revealed that, following TCR ligation, PerC T cell proliferation is suppressed due to IFNγ-triggered inducible nitric oxide synthase expression. In this study we assessed the ability of PerC B cells to respond to surrogate activating signals in the presence of high numbers of macrophages. Surface IgM (BCR) ligation led to cyclooxygenase-mediated, and TLR-4 ligation to IL10-mediated, suppression of PerC B cell proliferation. In contrast, PerC B cells had a robust response to CD40 ligation, which could overcome the suppression generated by the BCR or TLR-4 response. However, the CD40 response was suppressed by concurrent TCR ligation. These results reveal the challenges of promoting B and T cell responses in macrophage-rich conditions that model the TME.
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Affiliation(s)
- Naomi Goldman
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | | | | | - Adam Swider
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - John Somerville
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - James E Riggs
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA.
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Wood MA, Goldman N, DePierri K, Somerville J, Riggs JE. Erythropoietin increases macrophage-mediated T cell suppression. Cell Immunol 2016; 306-307:17-24. [PMID: 27262376 PMCID: PMC4983461 DOI: 10.1016/j.cellimm.2016.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 05/06/2016] [Accepted: 05/25/2016] [Indexed: 12/22/2022]
Abstract
Erythropoietin (EPO), used to treat anemia in cancer patients, has been reported to accelerate tumor progression and increase mortality. Research of the mechanism for this effect has focused upon EPOR expression by tumor cells. We model the high macrophage to lymphocyte ratio found in tumor microenvironments (TMEs) by culturing peritoneal cavity (PerC) cells that naturally have a high macrophage to T cell ratio. Following TCR ligation, C57BL/6J PerC T cell proliferation is suppressed due to IFNγ-triggered inducible nitric oxide synthase (iNOS) expression. EPO was tested in the PerC culture model and found to increase T cell suppression. This effect could be abrogated by inhibiting iNOS by enzyme inhibition, genetic ablation, or blocking IFNγ signaling. Flow cytometry revealed the EPOR on CD11b(+)F4/80(+) macrophages. These results suggest that EPO could increase T cell suppression in the TME by acting directly on macrophages.
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Affiliation(s)
- Michelle A Wood
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - Naomi Goldman
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - Kelley DePierri
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - John Somerville
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - James E Riggs
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA.
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Sedlacek AL, Gerber SA, Randall TD, van Rooijen N, Frelinger JG, Lord EM. Generation of a dual-functioning antitumor immune response in the peritoneal cavity. Am J Pathol 2013; 183:1318-1328. [PMID: 23933065 DOI: 10.1016/j.ajpath.2013.06.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 06/21/2013] [Accepted: 06/24/2013] [Indexed: 02/09/2023]
Abstract
Tumor cell metastasis to the peritoneal cavity is observed in patients with tumors of peritoneal organs, particularly colon and ovarian tumors. Following release into the peritoneal cavity, tumor cells rapidly attach to the omentum, a tissue consisting of immune aggregates embedded in adipose tissue. Despite their proximity to potential immune effector cells, tumor cells grow aggressively on these immune aggregates. We hypothesized that activation of the immune aggregates would generate a productive antitumor immune response in the peritoneal cavity. We immunized mice i.p. with lethally irradiated cells of the colon adenocarcinoma line Colon38. Immunization resulted in temporary enlargement of immune aggregates, and after challenge with viable Colon38 cells, we did not detect tumor growth on the omentum. When Colon38-immunized mice were challenged with cells from the unrelated breast adenocarcinoma line E0771 or the melanoma line B16, these tumors also did not grow. The nonspecific response was long-lived and not present systemically, highlighting the uniqueness of the peritoneal cavity. Cellular depletions of immune subsets revealed that NK1.1(+) cells were essential in preventing growth of unrelated tumors, whereas NK1.1(+) cells and T cells were essential in preventing Colon38 tumor growth. Collectively, these data demonstrate that the peritoneal cavity has a unique environment capable of eliciting potent specific and nonspecific antitumor immune responses.
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Affiliation(s)
- Abigail L Sedlacek
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York
| | - Scott A Gerber
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York
| | - Troy D Randall
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
| | - John G Frelinger
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York
| | - Edith M Lord
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York.
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Margry B, Wieland WH, van Kooten PJ, van Eden W, Broere F. Peritoneal cavity B-1a cells promote peripheral CD4+T-cell activation. Eur J Immunol 2013; 43:2317-26. [DOI: 10.1002/eji.201343418] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 05/23/2013] [Accepted: 05/27/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Bram Margry
- Department of Infectious Diseases and Immunology; Utrecht University; Utrecht the Netherlands
| | - Willemien H. Wieland
- Department of Infectious Diseases and Immunology; Utrecht University; Utrecht the Netherlands
| | - Peter J. van Kooten
- Department of Infectious Diseases and Immunology; Utrecht University; Utrecht the Netherlands
| | - Willem van Eden
- Department of Infectious Diseases and Immunology; Utrecht University; Utrecht the Netherlands
| | - Femke Broere
- Department of Infectious Diseases and Immunology; Utrecht University; Utrecht the Netherlands
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Silberman D, Bucknum A, Bartlett T, Composto G, Kozlowski M, Walker A, Werda A, Cua J, Sharpe AH, Somerville JE, Riggs JE. CD28 ligation increases macrophage suppression of T-cell proliferation. Cell Mol Immunol 2012; 9:341-9. [PMID: 22522653 DOI: 10.1038/cmi.2012.13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
When compared to spleen or lymph node cells, resident peritoneal cavity cells respond poorly to T-cell activation in vitro. The greater proportional representation of macrophages in this cell source has been shown to actively suppress the T-cell response. Peritoneal macrophages exhibit an immature phenotype (MHC class II(lo), B7(lo)) that reduces their efficacy as antigen-presenting cells. Furthermore, these cells readily express inducible nitric oxide synthase (iNOS), an enzyme that promotes T-cell tolerance by catabolism of the limiting amino acid arginine. Here, we investigate the ability of exogenous T-cell costimulation to recover the peritoneal T-cell response. We show that CD28 ligation failed to recover the peritoneal T-cell response and actually suppressed responses that had been recovered by inhibiting iNOS. As indicated by cytokine ELISpot and neutralizing monoclonal antibody (mAb) treatment, this 'cosuppression' response was due to CD28 ligation increasing the number of interferon (IFN)-γ-secreting cells. Our results illustrate that cellular composition and cytokine milieu influence T-cell costimulation biology.Cellular & Molecular Immunology advance online publication, 23 April 2012; doi:10.1038/cmi.2012.13.
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Affiliation(s)
- Daniel Silberman
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
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Hamilton MJ, Antignano F, von Rossum A, Boucher JL, Bennewith KL, Krystal G. TLR agonists that induce IFN-beta abrogate resident macrophage suppression of T cells. J Immunol 2010; 185:4545-53. [PMID: 20844190 DOI: 10.4049/jimmunol.1002045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Resident tissue macrophages (Mφs) continually survey the microenvironment, ingesting Ags and presenting them on their surface for recognition by T cells. Because these Ags can be either host cell- or pathogen-derived, Mφs must be able to distinguish whether a particular Ag should provoke an immune response or be tolerated. However, the mechanisms that determine whether Mφs promote or inhibit T cell activation are not well understood. To investigate this, we first determined the mechanism by which murine resident peritoneal Mφs suppress in vitro T cell proliferation in the absence of pathogens and then explored the effects of different pathogen-derived molecules on Mφ immunosuppression. Our results suggest that, in response to IFN-γ, which is secreted by TCR-activated T cells, resident peritoneal Mφs acquire immunosuppressive properties that are mediated by NO. However, pretreatment of Mφs with LPS or dsRNA, but not CpG or peptidoglycan, eliminates their suppressive properties, in part via the induction of autocrine-acting IFN-β. These results suggest TLR agonists that activate TRIF, and consequently induce IFN-β, but not those that exclusively signal through MyD88, abrogate the immunosuppressive properties of Mφs, and thus promote T cell expansion and elimination of invading microorganisms.
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Affiliation(s)
- Melisa J Hamilton
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
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