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Xu L, Lin L, Xie N, Chen W, Nong W, Li R. Role of aryl hydrocarbon receptors in infection and inflammation. Front Immunol 2024; 15:1367734. [PMID: 38680494 PMCID: PMC11045974 DOI: 10.3389/fimmu.2024.1367734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/02/2024] [Indexed: 05/01/2024] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a transcription factor that is activated by various ligands, including pollutants, microorganisms, and metabolic substances. It is expressed extensively in pulmonary and intestinal epithelial cells, where it contributes to barrier defense. The expression of AhR is pivotal in regulating the inflammatory response to microorganisms. However, dysregulated AhR expression can result in endocrine disorders, leading to immunotoxicity and potentially promoting the development of carcinoma. This review focuses on the crucial role of the AhR in facilitating and limiting the proliferation of pathogens, specifically in relation to the host cell type and the species of etiological agents involved in microbial pathogen infections. The activation of AhR is enhanced through the IDO1-AhR-IDO1 positive feedback loop, which is manipulated by viruses. AhR primarily promotes the infection of SARS-CoV-2 by inducing the expression of angiotensin-converting enzyme 2 (ACE2) and the secretion of pro-inflammatory cytokines. AhR also plays a significant role in regulating various types of T-cells, including CD4+ T cells and CD8+ T cells, in the context of pulmonary infections. The AhR pathway plays a crucial role in regulating immune responses within the respiratory and intestinal barriers when they are invaded by viruses, bacteria, parasites, and fungi. Additionally, we propose that targeting the agonist and antagonist of AhR signaling pathways could serve as a promising therapeutic approach for combating pathogen infections, especially in light of the growing prevalence of drug resistance to multiple antibiotics.
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Affiliation(s)
- Linglan Xu
- Key Laboratory of Research on Clinical Molecular Diagnosis for High Incidence Diseases in Western Guangxi, Department of Obstetrics and Gynecology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, China
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, China
| | - Luping Lin
- Key Laboratory of Research on Clinical Molecular Diagnosis for High Incidence Diseases in Western Guangxi, Department of Obstetrics and Gynecology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | - Nan Xie
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, China
| | - Weiwei Chen
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, China
| | - Weihua Nong
- Key Laboratory of Research on Clinical Molecular Diagnosis for High Incidence Diseases in Western Guangxi, Department of Obstetrics and Gynecology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | - Ranhui Li
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, China
- Hunan Prevention and Treatment Institute for Occupational Diseases and Affiliated Prevention and Treatment Institute for Occupational Diseases, University of South China, Changsha, China
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Healey AM, Fenner KN, O'Dell CT, Lawrence BP. Aryl hydrocarbon receptor activation alters immune cell populations in the lung and bone marrow during coronavirus infection. Am J Physiol Lung Cell Mol Physiol 2024; 326:L313-L329. [PMID: 38290163 DOI: 10.1152/ajplung.00236.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
Respiratory viral infections are one of the major causes of illness and death worldwide. Symptoms associated with respiratory infections can range from mild to severe, and there is limited understanding of why there is large variation in severity. Environmental exposures are a potential causative factor. The aryl hydrocarbon receptor (AHR) is an environment-sensing molecule expressed in all immune cells. Although there is considerable evidence that AHR signaling influences immune responses to other immune challenges, including respiratory pathogens, less is known about the impact of AHR signaling on immune responses during coronavirus (CoV) infection. In this study, we report that AHR activation significantly altered immune cells in the lungs and bone marrow of mice infected with a mouse CoV. AHR activation transiently reduced the frequency of multiple cells in the mononuclear phagocyte system, including monocytes, interstitial macrophages, and dendritic cells in the lung. In the bone marrow, AHR activation altered myelopoiesis, as evidenced by a reduction in granulocyte-monocyte progenitor cells and an increased frequency of myeloid-biased progenitor cells. Moreover, AHR activation significantly affected multiple stages of the megakaryocyte lineage. Overall, these findings indicate that AHR activation modulates multiple aspects of the immune response to a CoV infection. Given the significant burden of respiratory viruses on human health, understanding how environmental exposures shape immune responses to infection advances our knowledge of factors that contribute to variability in disease severity and provides insight into novel approaches to prevent or treat disease.NEW & NOTEWORTHY Our study reveals a multifaceted role for aryl hydrocarbon receptor (AHR) signaling in the immune response to coronavirus (CoV) infection. Sustained AHR activation during in vivo mouse CoV infection altered the frequency of mature immune cells in the lung and modulated emergency hematopoiesis, specifically myelopoiesis and megakaryopoiesis, in bone marrow. This provides new insight into immunoregulation by the AHR and extends our understanding of how environmental exposures can impact host responses to respiratory viral infections.
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Affiliation(s)
- Alicia M Healey
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States
| | - Kristina N Fenner
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States
| | - Colleen T O'Dell
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States
| | - B Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States
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Gaio P, Cramer A, de Melo Oliveira NF, Porto S, Kramer L, Nonato Rabelo RA, Pereira RDD, de Oliveira Santos LL, Nascimento Barbosa CL, Silva Oliveira FM, Martins Teixeira M, Castro Russo R, Matos MJ, Simão Machado F. N-(coumarin-3-yl)cinnamamide Promotes Immunomodulatory, Neuroprotective, and Lung Function-Preserving Effects during Severe Malaria. Pharmaceuticals (Basel) 2023; 17:46. [PMID: 38256880 PMCID: PMC10821074 DOI: 10.3390/ph17010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024] Open
Abstract
Plasmodium berghei ANKA (PbA) infection in mice resembles several aspects of severe malaria in humans, such as cerebral malaria and acute respiratory distress syndrome. Herein, the effects of N-(coumarin-3-yl)cinnamamide (M220) against severe experimental malaria have been investigated. Treatment with M220 proved to protect cognitive abilities and lung function in PbA-infected mice, observed by an object recognition test and spirometry, respectively. In addition, treated mice demonstrated decreased levels of brain and lung inflammation. The production and accumulation of microglia, and immune cells that produce the inflammatory cytokines TNF and IFN-γ, decreased, while the production of the anti-inflammatory cytokine IL-10 by innate and adaptive immune cells was enhanced. Treatment with M220 promotes immunomodulatory, neuroprotective, and lung function-preserving effects during experimental severe malaria. Therefore, it may be an interesting therapeutic candidate to treat severe malaria effects.
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Affiliation(s)
- Paulo Gaio
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Allysson Cramer
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Natália Fernanda de Melo Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Samuel Porto
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Lucas Kramer
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Rayane Aparecida Nonato Rabelo
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Rafaela das Dores Pereira
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - Laura Lis de Oliveira Santos
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
| | - César Luís Nascimento Barbosa
- Program in Health Sciences, Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, MG, Brazil;
| | - Fabrício Marcus Silva Oliveira
- Cellular and Molecular Immunology Group, René Rachou Institute, Oswald o Cruz Foundation—FIOCRUZ, Belo Horizonte 30190-002, MG, Brazil;
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
- Program in Health Sciences, Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, MG, Brazil;
| | - Remo Castro Russo
- Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil;
| | - Maria João Matos
- Departamento de Química Orgánica, Facultad de Farmacia, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (P.G.); (A.C.); (N.F.d.M.O.); (S.P.); (L.K.); (R.A.N.R.); (R.d.D.P.); (L.L.d.O.S.); (M.M.T.)
- Program in Health Sciences, Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, MG, Brazil;
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Pereira RDD, Rabelo RAN, Oliveira NFDM, Porto SLT, Andrade ACDSP, Queiroz-Junior CM, Barbosa CLN, de Souza-Costa LP, Santos FRDS, Oliveira FBR, da Silva BLV, Umezu HL, Ferreira R, da Silva GSF, Cruz JS, Teixeira MM, Costa VV, Machado FS. A 5-Lipoxygenase Inhibitor, Zileuton, Modulates Host Immune Responses and Improves Lung Function in a Model of Severe Acute Respiratory Syndrome (SARS) Induced by Betacoronavirus. Viruses 2023; 15:2049. [PMID: 37896826 PMCID: PMC10611395 DOI: 10.3390/v15102049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
Exacerbated inflammatory responses are a hallmark of severe coronavirus disease 2019 (COVID-19). Zileuton (Zi) is a selective inhibitor of 5-lipoxygenase, an enzyme involved in the production of several inflammatory/pro-resolving lipid mediators. Herein, we investigated the effect of Zi treatment in a severe acute respiratory syndrome (SARS) model. Mouse hepatitis virus (MHV)3-infected mice treated with Zi significantly improved the clinical score, weight loss, cardiopulmonary function, and survival rates compared with infected untreated animals. The protection observed in Zi-treated mice was associated with a lower inflammatory score, reduced dendritic cell-producing tumor necrosis factor (TNF), and increased neutrophil-producing interleukin (IL)-10 in the lungs three days after infection (dpi). At 5 dpi, the lungs of treated mice showed an increase in Th2-, Treg CD4+-, and Treg CD8+-producing IL-10 and reduced Th1 infiltrating cells. Furthermore, similar results were found upon Zi treatment after SARS-CoV-2 infection in transgenic mice expressing the human angiotensin I-converting enzyme 2 (ACE2) receptor driven by the cytokeratin-18 (K18) gene promoter (K18-hACE2), significantly improving the clinical score, weight loss, and lung inflammatory score compared with untreated animals. Our data suggest that Zi protects against developing severe lung disease during SARS induced by betacoronavirus without affecting the host's capacity to deal with infection.
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Affiliation(s)
- Rafaela das Dores Pereira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Rayane Aparecida Nonato Rabelo
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Natália Fernanda de Melo Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Samuel Luiz Teixeira Porto
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Ana Claudia dos Santos Pereira Andrade
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Celso M. Queiroz-Junior
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - César Luís Nascimento Barbosa
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Luiz Pedro de Souza-Costa
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Felipe Rocha da Silva Santos
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Fernando Bento Rodrigues Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Bárbara Luísa Vieira da Silva
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Hanna L. Umezu
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (H.L.U.); (G.S.F.d.S.)
| | - Raquel Ferreira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Glauber S. F. da Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (H.L.U.); (G.S.F.d.S.)
| | - Jader Santos Cruz
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
| | - Vivian Vasconcelos Costa
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (A.C.d.S.P.A.); (C.M.Q.-J.); (B.L.V.d.S.)
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (R.d.D.P.); (R.A.N.R.); (N.F.d.M.O.); (S.L.T.P.); (L.P.d.S.-C.); (F.R.d.S.S.); (F.B.R.O.); (R.F.); (J.S.C.); (M.M.T.)
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
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Safe S, Han H, Jayaraman A, Davidson LA, Allred CD, Ivanov I, Yang Y, Cai JJ, Chapkin RS. Aryl Hydrocarbon Receptor (AhR) Signaling in Colonic Cells and Tumors. RECEPTORS (BASEL, SWITZERLAND) 2023; 2:93-99. [PMID: 38651159 PMCID: PMC11034912 DOI: 10.3390/receptors2010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The aryl hydrocarbon receptor (AhR) is overexpressed in many tumor types and exhibits tumor-specific tumor promoter and tumor suppressor-like activity. In colon cancer, most but not all studies suggest that the AhR exhibits tumor suppressor activity which is enhanced by AhR ligands acting as agonists. Our studies investigated the role of the AhR in colon tumorigenesis using wild-type and AhR-knockout mice, the inflammation model of colon tumorigenesis using mice treated with azoxymethane (AOM)/dextran sodium sulfate (DSS) and APCS580/+; KrasG12D/+ mice all of which form intestinal tumors. The effects of tissue-specific AhR loss in the intestine of the tumor-forming mice on colonic stem cells, organoid-initiating capacity, colon tumor formation and mechanisms of AhR-mediated effects were investigated. Loss of AhR enhanced stem cell and tumor growth and in the AOM/DSS model AhR-dependent suppression of FOXM1 and downstream genes was important for AhR-dependent anticancer activity. Furthermore, the effectiveness of interleukin-22 (IL22) in colonic epithelial cells was also dependent on AhR expression. IL22 induced phosphorylation of STAT3, inhibited colonic organoid growth, promoted colonic cell proliferation in vivo and enhanced DNA repair in AOM/DSS-induced tumors. In this mouse model, the AhR suppressed SOCS3 expression and enhanced IL22-mediated activation of STAT3, whereas the loss of the AhR increased levels of SOCS3 which in turn inhibited IL22-induced STAT3 activation. In the APCS580/+; KrasG12D/+ mouse model, the loss of the AhR enhanced Wnt signaling and colon carcinogenesis. Results in both mouse models of colon carcinogenesis were complemented by single cell transcriptomics on colonic intestinal crypts which also showed that AhR deletion promoted expression of FOXM1-regulated genes in multiple colonic cell subtypes. These results support the role of the AhR as a tumor suppressor-like gene in the colon.
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Affiliation(s)
- Stephen Safe
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX 77843, USA
| | - Huajun Han
- Program in Integrative Nutrition and Complex Diseases, Department of Nutrition, Texas A&M University, College Station, TX 77843, USA
| | - Arul Jayaraman
- Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Laurie A. Davidson
- Program in Integrative Nutrition and Complex Diseases, Department of Nutrition, Texas A&M University, College Station, TX 77843, USA
| | - Clinton D. Allred
- Department of Nutrition, University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Ivan Ivanov
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX 77843, USA
| | - Yongjian Yang
- Program in Integrative Nutrition and Complex Diseases, Department of Nutrition, Texas A&M University, College Station, TX 77843, USA
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA
| | - James J. Cai
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases, Department of Nutrition, Texas A&M University, College Station, TX 77843, USA
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Metabolomic Analysis of Diverse Mice Reveals Hepatic Arginase-1 as Source of Plasma Arginase in Plasmodium chabaudi Infection. mBio 2021; 12:e0242421. [PMID: 34607466 PMCID: PMC8546868 DOI: 10.1128/mbio.02424-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Infections disrupt host metabolism, but the factors that dictate the nature and magnitude of metabolic change are incompletely characterized. To determine how host metabolism changes in relation to disease severity in murine malaria, we performed plasma metabolomics on eight Plasmodium chabaudi-infected mouse strains with diverse disease phenotypes. We identified plasma metabolic biomarkers for both the nature and severity of different malarial pathologies. A subset of metabolic changes, including plasma arginine depletion, match the plasma metabolomes of human malaria patients, suggesting new connections between pathology and metabolism in human malaria. In our malarial mice, liver damage, which releases hepatic arginase-1 (Arg1) into circulation, correlated with plasma arginine depletion. We confirmed that hepatic Arg1 was the primary source of increased plasma arginase activity in our model, which motivates further investigation of liver damage in human malaria patients. More broadly, our approach shows how leveraging phenotypic diversity can identify and validate relationships between metabolism and the pathophysiology of infectious disease. IMPORTANCE Malaria is a severe and sometimes fatal infectious disease endemic to tropical and subtropical regions. Effective vaccines against malaria-causing Plasmodium parasites remain elusive, and malaria treatments often fail to prevent severe disease. Small molecules that target host metabolism have recently emerged as candidates for therapeutics in malaria and other diseases. However, our limited understanding of how metabolites affect pathophysiology limits our ability to develop new metabolite therapies. By providing a rich data set of metabolite-pathology correlations and by validating one of those correlations, our work is an important step toward harnessing metabolism to mitigate disease. Specifically, we showed that liver damage in P. chabaudi-infected mice releases hepatic arginase-1 into circulation, where it may deplete plasma arginine, a candidate malaria therapeutic that mitigates vascular stress. Our data suggest that liver damage may confound efforts to increase levels of arginine in human malaria patients.
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7
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Lissner MM, Cumnock K, Davis NM, Vilches-Moure JG, Basak P, Navarrete DJ, Allen JA, Schneider D. Metabolic profiling during malaria reveals the role of the aryl hydrocarbon receptor in regulating kidney injury. eLife 2020; 9:60165. [PMID: 33021470 PMCID: PMC7538157 DOI: 10.7554/elife.60165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
Systemic metabolic reprogramming induced by infection exerts profound, pathogen-specific effects on infection outcome. Here, we detail the host immune and metabolic response during sickness and recovery in a mouse model of malaria. We describe extensive alterations in metabolism during acute infection, and identify increases in host-derived metabolites that signal through the aryl hydrocarbon receptor (AHR), a transcription factor with immunomodulatory functions. We find that Ahr-/- mice are more susceptible to malaria and develop high plasma heme and acute kidney injury. This phenotype is dependent on AHR in Tek-expressing radioresistant cells. Our findings identify a role for AHR in limiting tissue damage during malaria. Furthermore, this work demonstrates the critical role of host metabolism in surviving infection.
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Affiliation(s)
- Michelle M Lissner
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
| | - Katherine Cumnock
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
| | - Nicole M Davis
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
| | - José G Vilches-Moure
- Department of Comparative Medicine, Stanford University, Stanford, United States
| | - Priyanka Basak
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
| | - Daniel J Navarrete
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
| | - Jessica A Allen
- Division of Health, Mathematics and Science, Columbia College, Columbia, United States
| | - David Schneider
- Department of Microbiology and Immunology, Stanford University, Stanford, United States
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8
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Chandrakar P, Parmar N, Descoteaux A, Kar S. Differential Induction of SOCS Isoforms by Leishmania donovani Impairs Macrophage–T Cell Cross-Talk and Host Defense. THE JOURNAL OF IMMUNOLOGY 2019; 204:596-610. [DOI: 10.4049/jimmunol.1900412] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 11/24/2019] [Indexed: 12/31/2022]
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9
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Ambrosio LF, Insfran C, Volpini X, Acosta Rodriguez E, Serra HM, Quintana FJ, Cervi L, Motrán CC. Role of Aryl Hydrocarbon Receptor (AhR) in the Regulation of Immunity and Immunopathology During Trypanosoma cruzi Infection. Front Immunol 2019; 10:631. [PMID: 30984194 PMCID: PMC6450169 DOI: 10.3389/fimmu.2019.00631] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/08/2019] [Indexed: 12/15/2022] Open
Abstract
Resistance to Trypanosoma cruzi infection is dependent on a rapid induction of Th1-type and CD8+ T cell responses that should be promptly balanced to prevent immunopathology. T. cruzi-infected B6 mice are able to control parasite replication but show a limited expansion of Foxp3+regulatory T (Treg) cells that results in the accumulation of effector immune cells and the development of acute liver pathology. AhR is a ligand-activated transcription factor that promotes Treg cell development and suppression of pro-inflammatory cytokine production in dendritic cells, altering the course of adaptive immune response and the development of immunopathology. Here, we used different AhR-dependent activation strategies aiming to improve the Treg response, and B6 congenic mice carrying a mutant AhR variant with low affinity for its ligands (AhRd) to evaluate the role of AhR activation by natural ligands during experimental T. cruzi infection. The outcome of TCDD or 3-HK plus ITE treatments indicated that strong or weak AhR activation before or during T. cruzi infection was effective to regulate inflammation improving the Treg cell response and regularizing the ratio between CD4+ CD25- to Treg cells. However, AhR activation shifted the host-parasite balance to the parasite replication. Weak AhR activation resulted in Treg promotion while strong activation differentially modulated the susceptibility and resistance of cell death in activated T and Treg cells and the increase in TGF-β-producing Treg cells. Of note, T. cruzi-infected AhRd mice showed low levels of Treg cells associated with strong Th1-type response, low parasite burden and absence of liver pathology. These mice developed a Treg- and Tr1-independent mechanism of Th1 constriction showing increased levels of systemic IL-10 and IL-10-secreting CD4+ splenocytes. In addition, AhR activation induced by exogenous ligands had negative effects on the development of memory CD8+ T cell subsets while the lack/very weak activation in AhRd mice showed opposite results, suggesting that AhR ligation restricts the differentiation of memory CD8+T cell subsets. We propose a model in which a threshold of AhR activation exists and may explain how activation or inhibition of AhR-derived signals by infection/inflammation-induced ligands, therapeutic interventions or exposure to pollutants can modulate infections/diseases outcomes or vaccination efficacy.
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Affiliation(s)
- Laura Fernanda Ambrosio
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Constanza Insfran
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Ximena Volpini
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Eva Acosta Rodriguez
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Horacio Marcelo Serra
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Francisco J Quintana
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States.,The Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Laura Cervi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
| | - Claudia Cristina Motrán
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Córdoba, Argentina
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10
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Ivanova DL, Denton SL, Fettel KD, Sondgeroth KS, Munoz Gutierrez J, Bangoura B, Dunay IR, Gigley JP. Innate Lymphoid Cells in Protection, Pathology, and Adaptive Immunity During Apicomplexan Infection. Front Immunol 2019; 10:196. [PMID: 30873151 PMCID: PMC6403415 DOI: 10.3389/fimmu.2019.00196] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 01/23/2019] [Indexed: 12/23/2022] Open
Abstract
Apicomplexans are a diverse and complex group of protozoan pathogens including Toxoplasma gondii, Plasmodium spp., Cryptosporidium spp., Eimeria spp., and Babesia spp. They infect a wide variety of hosts and are a major health threat to humans and other animals. Innate immunity provides early control and also regulates the development of adaptive immune responses important for controlling these pathogens. Innate immune responses also contribute to immunopathology associated with these infections. Natural killer (NK) cells have been for a long time known to be potent first line effector cells in helping control protozoan infection. They provide control by producing IL-12 dependent IFNγ and killing infected cells and parasites via their cytotoxic response. Results from more recent studies indicate that NK cells could provide additional effector functions such as IL-10 and IL-17 and might have diverse roles in immunity to these pathogens. These early studies based their conclusions on the identification of NK cells to be CD3–, CD49b+, NK1.1+, and/or NKp46+ and the common accepted paradigm at that time that NK cells were one of the only lymphoid derived innate immune cells present. New discoveries have lead to major advances in understanding that NK cells are only one of several populations of innate immune cells of lymphoid origin. Common lymphoid progenitor derived innate immune cells are now known as innate lymphoid cells (ILC) and comprise three different groups, group 1, group 2, and group 3 ILC. They are a functionally heterogeneous and plastic cell population and are important effector cells in disease and tissue homeostasis. Very little is known about each of these different types of ILCs in parasitic infection. Therefore, we will review what is known about NK cells in innate immune responses during different protozoan infections. We will discuss what immune responses attributed to NK cells might be reconsidered as ILC1, 2, or 3 population responses. We will then discuss how different ILCs may impact immunopathology and adaptive immune responses to these parasites.
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Affiliation(s)
- Daria L Ivanova
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Stephen L Denton
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Kevin D Fettel
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | | | - Juan Munoz Gutierrez
- Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
| | - Berit Bangoura
- Veterinary Sciences, University of Wyoming, Laramie, WY, United States
| | - Ildiko R Dunay
- Institute of Inflammation and Neurodegeneration, Otto-von-Guericke Universität Magdeburg, Magdeburg, Germany
| | - Jason P Gigley
- Molecular Biology, University of Wyoming, Laramie, WY, United States
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11
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Palomo J, Quesniaux VFJ, Togbe D, Reverchon F, Ryffel B. Unravelling the roles of innate lymphoid cells in cerebral malaria pathogenesis. Parasite Immunol 2019; 40. [PMID: 29117626 DOI: 10.1111/pim.12502] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 10/31/2017] [Indexed: 12/17/2022]
Abstract
Cerebral malaria (CM) is one complication of Plasmodium parasite infection that can lead to strong inflammatory immune responses in the central nervous system (CNS), accompanied by lung inflammation and anaemia. Here, we focus on the role of the innate immune response in experimental cerebral malaria (ECM) caused by blood-stage murine Plasmodium berghei ANKA infection. While T cells are important for ECM pathogenesis, the role of innate lymphoid cells (ILCs) is only emerging. The role of ILCs and non-lymphoid cells, such as neutrophils and platelets, contributing to the host immune response and leading to ECM and human cerebral malaria (HCM) is reviewed.
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Affiliation(s)
- J Palomo
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Geneva, Switzerland
| | - V F J Quesniaux
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France
| | - D Togbe
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,Artimmune SAS, Orléans, France
| | - F Reverchon
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France
| | - B Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,IDM, Medical School, University of Cape Town, Cape Town, Republic of South Africa
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12
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T-lymphocytes response persists following Plasmodium berghei strain Anka infection resolution and may contribute to later experimental cerebral malaria outcomes. J Neuroimmunol 2019; 330:5-11. [PMID: 30763800 DOI: 10.1016/j.jneuroim.2019.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/04/2019] [Accepted: 02/07/2019] [Indexed: 01/20/2023]
Abstract
Several studies have proposed cerebral malaria (CM) as a CD4+ and CD8+ T lymphocyte-mediated disease. However, there are no data regarding the recruitment and/or persistence of these cells in the CNS following the phase of infection resolution. Glutamate-mediate excitotoxicity has also been implicated in CM. Blockade of glutamate NMDA receptors by its noncompetitive antagonist MK801 modulates cytokine and neurotrophic factors expression preventing cognitive and depressive-like behavior in experimental CM. Herein, we aim to investigate the role of T lymphocytes in later outcomes in CM, and whether the protective role of MK801 is associated with T lymphocytes response.
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13
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Differential Gene Expression Profile of Human Neutrophils Cultured with Plasmodium falciparum-Parasitized Erythrocytes. J Immunol Res 2018; 2018:6709424. [PMID: 30069491 PMCID: PMC6057315 DOI: 10.1155/2018/6709424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/08/2018] [Accepted: 05/15/2018] [Indexed: 11/17/2022] Open
Abstract
Neutrophils (PMNs) are the most abundant cellular component of our innate immune system, where they play central roles in the pathogenesis of and resistance to a broad range of diseases. However, their roles in malarial infection remain poorly understood. Therefore, we examined the transcriptional gene profile of human PMNs in response to Plasmodium falciparum-parasitized erythrocytes (iRBCs) by using oligonucleotide microarrays. Results revealed that PMNs induced a broad and vigorous set of changes in gene expression in response to malarial parasites, represented by 118 upregulated and 216 downregulated genes. The transcriptional response was characterized by the upregulation of numerous genes encoding multiple surface receptors, proteins involved in signal transduction pathways, and defense response proteins. This response included a number of genes which are known to be involved in the pathogenesis of malaria and other inflammatory diseases. Gene enrichment analysis suggested that the biological pathways involved in the PMN responses to the iRBCs included insulin receptor, Jak-STAT signaling pathway, mitogen-activated protein kinase (MAPK), and interleukin and interferon-gamma (IFN-γ) signaling pathways. The current study provides fundamental knowledge on the molecular responses of neutrophils to malarial parasites, which may aid in the discovery of novel therapeutic interventions.
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14
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Genetic analysis of cerebral malaria in the mouse model infected with Plasmodium berghei. Mamm Genome 2018; 29:488-506. [DOI: 10.1007/s00335-018-9752-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 06/05/2018] [Indexed: 12/22/2022]
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15
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Aryl Hydrocarbon Receptor: A New Player of Pathogenesis and Therapy in Cardiovascular Diseases. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6058784. [PMID: 29984241 PMCID: PMC6015699 DOI: 10.1155/2018/6058784] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/14/2018] [Accepted: 04/05/2018] [Indexed: 01/04/2023]
Abstract
The aryl hydrocarbon receptor (AhR) is a DNA binding protein that acts as a nuclear receptor mediating xenobiotic metabolism and environmental responses. Owing to the evolutionary conservation of this gene and its widespread expression in the immune and circulatory systems, AhR has for many years been almost exclusively studied by the pharmacological/toxicological field for its role in contaminant toxicity. More recently, the functions of AhR in environmental adaption have been examined in the context of the occurrence, development, and therapy of cardiovascular diseases. Increasing evidence suggests that AhR is involved in maintaining homeostasis or in triggering pathogenesis by modulating the biological responses of critical cell types in the cardiovascular system. Here, we describe the structure, distribution, and ligands of AhR and the AhR signaling pathway and review the impact of AhR on cardiovascular physiology. We also discuss the potential contribution of AhR as a new potential factor in the targeted treatment of cardiovascular diseases.
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16
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Bastos MF, Kayano ACAV, Silva-Filho JL, Dos-Santos JCK, Judice C, Blanco YC, Shryock N, Sercundes MK, Ortolan LS, Francelin C, Leite JA, Oliveira R, Elias RM, Câmara NOS, Lopes SCP, Albrecht L, Farias AS, Vicente CP, Werneck CC, Giorgio S, Verinaud L, Epiphanio S, Marinho CRF, Lalwani P, Amino R, Aliberti J, Costa FTM. Inhibition of hypoxia-associated response and kynurenine production in response to hyperbaric oxygen as mechanisms involved in protection against experimental cerebral malaria. FASEB J 2018; 32:4470-4481. [PMID: 29558201 DOI: 10.1096/fj.201700844r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cerebral malaria (CM) is a multifactorial syndrome involving an exacerbated proinflammatory status, endothelial cell activation, coagulopathy, hypoxia, and accumulation of leukocytes and parasites in the brain microvasculature. Despite significant improvements in malaria control, 15% of mortality is still observed in CM cases, and 25% of survivors develop neurologic sequelae for life-even after appropriate antimalarial therapy. A treatment that ameliorates CM clinical signs, resulting in complete healing, is urgently needed. Previously, we showed a hyperbaric oxygen (HBO)-protective effect against experimental CM. Here, we provide molecular evidence that HBO targets brain endothelial cells by decreasing their activation and inhibits parasite and leukocyte accumulation, thus improving cerebral microcirculatory blood flow. HBO treatment increased the expression of aryl hydrocarbon receptor over hypoxia-inducible factor 1-α (HIF-1α), an oxygen-sensitive cytosolic receptor, along with decreased indoleamine 2,3-dioxygenase 1 expression and kynurenine levels. Moreover, ablation of HIF-1α expression in endothelial cells in mice conferred protection against CM and improved survival. We propose that HBO should be pursued as an adjunctive therapy in CM patients to prolong survival and diminish deleterious proinflammatory reaction. Furthermore, our data support the use of HBO in therapeutic strategies to improve outcomes of non-CM disorders affecting the brain.-Bastos, M. F., Kayano, A. C. A. V., Silva-Filho, J. L., Dos-Santos, J. C. K., Judice, C., Blanco, Y. C., Shryock, N., Sercundes, M. K., Ortolan, L. S., Francelin, C., Leite, J. A., Oliveira, R., Elias, R. M., Câmara, N. O. S., Lopes, S. C. P., Albrecht, L., Farias, A. S., Vicente, C. P., Werneck, C. C., Giorgio, S., Verinaud, L., Epiphanio, S., Marinho, C. R. F., Lalwani, P., Amino, R., Aliberti, J., Costa, F. T. M. Inhibition of hypoxia-associated response and kynurenine production in response to hyperbaric oxygen as mechanisms involved in protection against experimental cerebral malaria.
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Affiliation(s)
- Marcele F Bastos
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Ana Carolina A V Kayano
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - João Luiz Silva-Filho
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - João Conrado K Dos-Santos
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Carla Judice
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Yara C Blanco
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Nathaniel Shryock
- Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Michelle K Sercundes
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Luana S Ortolan
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Carolina Francelin
- Department of Functional and Structural Biology, University of Campinas, Campinas, Brazil
| | - Juliana A Leite
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Rafaella Oliveira
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Rosa M Elias
- Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Niels O S Câmara
- Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Stefanie C P Lopes
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil.,Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Letusa Albrecht
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil.,Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, Brazil
| | - Alessandro S Farias
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Cristina P Vicente
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Claudio C Werneck
- Department of Biochemistry and Tissue Biology, University of Campinas, Campinas, Brazil
| | - Selma Giorgio
- Department of Animal Biology, University of Campinas, Campinas, Brazil
| | - Liana Verinaud
- Department of Functional and Structural Biology, University of Campinas, Campinas, Brazil
| | - Sabrina Epiphanio
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | | | - Pritesh Lalwani
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Rogerio Amino
- Unit of Malaria Infection and Immunity, Institut Pasteur, Paris, France
| | - Julio Aliberti
- Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Extramural Activities, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Fabio T M Costa
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
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17
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Vilela LR, Lima IV, Kunsch ÉB, Pinto HPP, de Miranda AS, Vieira ÉLM, de Oliveira ACP, Moraes MFD, Teixeira AL, Moreira FA. Anticonvulsant effect of cannabidiol in the pentylenetetrazole model: Pharmacological mechanisms, electroencephalographic profile, and brain cytokine levels. Epilepsy Behav 2017; 75:29-35. [PMID: 28821005 DOI: 10.1016/j.yebeh.2017.07.014] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/01/2017] [Accepted: 07/07/2017] [Indexed: 11/26/2022]
Abstract
Cannabidiol (CBD), the main nonpsychotomimetic compound from Cannabis sativa, inhibits experimental seizures in animal models and alleviates certain types of intractable epilepsies in patients. Its pharmacological profile, however, is still uncertain. Here we tested the hypothesis that CBD anticonvulsant mechanisms are prevented by cannabinoid (CB1 and CB2) and vanilloid (TRPV1) receptor blockers. We also investigated its effects on electroencephalographic (EEG) activity and hippocampal cytokines in the pentylenetetrazole (PTZ) model. Pretreatment with CBD (60mg/kg) attenuated seizures induced by intraperitoneal, subcutaneous, and intravenous PTZ administration in mice. The effects were reversed by CB1, CB2, and TRPV1 selective antagonists (AM251, AM630, and SB366791, respectively). Additionally, CBD delayed seizure sensitization resulting from repeated PTZ administration (kindling). This cannabinoid also prevented PTZ-induced EEG activity and interleukin-6 increase in prefrontal cortex. In conclusion, the robust anticonvulsant effects of CBD may result from multiple pharmacological mechanisms, including facilitation of endocannabinoid signaling and TRPV1 mechanisms. These findings advance our understanding on CBD inhibition of seizures, EEG activity, and cytokine actions, with potential implications for the development of new treatments for certain epileptic syndromes.
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Affiliation(s)
- Luciano R Vilela
- Graduate School in Neuroscience, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Isabel V Lima
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Érica B Kunsch
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Hyorrana Priscila P Pinto
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Aline S de Miranda
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Érica Leandro M Vieira
- Graduate School in Neuroscience, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | | | - Marcio Flávio D Moraes
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Antônio L Teixeira
- Department of Internal Medicine, School of Medicine, Universidade Federal de Minas Gerais, Brazil.
| | - Fabricio A Moreira
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil.
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18
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de Miranda AS, Brant F, Vieira LB, Rocha NP, Vieira ÉLM, Rezende GHS, de Oliveira Pimentel PM, Moraes MFD, Ribeiro FM, Ransohoff RM, Teixeira MM, Machado FS, Rachid MA, Teixeira AL. A Neuroprotective Effect of the Glutamate Receptor Antagonist MK801 on Long-Term Cognitive and Behavioral Outcomes Secondary to Experimental Cerebral Malaria. Mol Neurobiol 2016; 54:7063-7082. [PMID: 27796746 DOI: 10.1007/s12035-016-0226-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 10/13/2016] [Indexed: 02/06/2023]
Abstract
Cerebral malaria (CM) is a life-threatening complication of Plasmodium falciparum infection, which can result in long-term cognitive and behavioral deficits despite successful anti-malarial therapy. Due to the substantial social and economic burden of CM, the development of adjuvant therapies is a scientific goal of highest priority. Apart from vascular and immune responses, changes in glutamate system have been reported in CM pathogenesis suggesting a potential therapeutic target. Based on that, we hypothesized that interventions in the glutamatergic system induced by blockage of N-methyl-D-aspartate (NMDA) receptors could attenuate experimental CM long-term cognitive and behavioral outcomes. Before the development of evident CM signs, susceptible mice infected with Plasmodium berghei ANKA (PbA) strain were initiated on treatment with dizocilpine maleate (MK801, 0.5 mg/kg), a noncompetitive NMDA receptor antagonist. On day 5 post-infection, mice were treated orally with a 10-day course chloroquine (CQ, 30 mg/kg). Control mice also received saline, CQ or MK801 + CQ therapy. After 10 days of cessation of CQ treatment, magnetic resonance images (MRI), behavioral and immunological assays were performed. Indeed, MK801 combined with CQ prevented long-term memory impairment and depressive-like behavior following successful PbA infection resolution. In addition, MK801 also modulated the immune system by promoting a balance of TH1/TH2 response and upregulating neurotrophic factors levels in the frontal cortex and hippocampus. Moreover, hippocampus abnormalities observed by MRI were partially prevented by MK801 treatment. Our results indicate that NMDA receptor antagonists can be neuroprotective in CM and could be a valuable adjuvant strategy for the management of the long-term impairment observed in CM.
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Affiliation(s)
- Aline Silva de Miranda
- Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil. .,Laboratory of Neurobiology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil. .,Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil. .,Departamento de Morfologia, ICB, UFMG, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, 31270-901, Brazil.
| | - Fátima Brant
- Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luciene Bruno Vieira
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Natália Pessoa Rocha
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Érica Leandro Marciano Vieira
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gustavo Henrique Souza Rezende
- Department of Physiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Marcio F D Moraes
- Department of Physiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fabíola Mara Ribeiro
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Mauro Martins Teixeira
- Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fabiana Simão Machado
- Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Milene Alvarenga Rachid
- Department of Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antônio Lúcio Teixeira
- Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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19
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The Aryl Hydrocarbon Receptor Modulates Production of Cytokines and Reactive Oxygen Species and Development of Myocarditis during Trypanosoma cruzi Infection. Infect Immun 2016; 84:3071-82. [PMID: 27481250 DOI: 10.1128/iai.00575-16] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 07/27/2016] [Indexed: 01/12/2023] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor involved in controlling several aspects of immune responses, including the activation and differentiation of specific T cell subsets and antigen-presenting cells, thought to be relevant in the context of experimental Trypanosoma cruzi infection. The relevance of AhR for the outcome of T. cruzi infection is not known and was investigated here. We infected wild-type (WT) mice and AhR knockout (AhR KO) mice with T. cruzi (Y strain) and determined levels of parasitemia, myocardial inflammation and fibrosis, expression of AhR/cytokines/suppressor of cytokine signaling (SOCS) (spleen/heart), and production of nitric oxide (NO), reactive oxygen species (ROS), and peroxynitrite (ONOO(-)) (spleen). AhR expression was increased in the heart of infected WT mice. Infected AhR KO mice displayed significantly reduced parasitemia, inflammation, and fibrosis of the myocardium. This was associated with an anticipated increased immune response characterized by increased levels of inflammatory cytokines and reduced expression of SOCS2 and SOCS3 in the heart. In vitro, AhR deficiency caused impairment in parasite replication and decreased levels of ROS production. In conclusion, AhR influences the development of murine Chagas disease by modulating ROS production and regulating the expression of key physiological regulators of inflammation, SOCS1 to -3, associated with the production of cytokines during experimental T. cruzi infection.
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20
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Brant F, Miranda AS, Esper L, Gualdrón-López M, Cisalpino D, de Souza DDG, Rachid MA, Tanowitz HB, Teixeira MM, Teixeira AL, Machado FS. Suppressor of cytokine signaling 2 modulates the immune response profile and development of experimental cerebral malaria. Brain Behav Immun 2016; 54:73-85. [PMID: 26765997 DOI: 10.1016/j.bbi.2016.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 12/23/2015] [Accepted: 01/04/2016] [Indexed: 11/18/2022] Open
Abstract
Plasmodium falciparum infection results in severe malaria in humans, affecting various organs, including the liver, spleen and brain, and resulting in high morbidity and mortality. The Plasmodium berghei ANKA (PbA) infection in mice closely recapitulates many aspects of human cerebral malaria (CM); thus, this model has been used to investigate the pathogenesis of CM. Suppressor of cytokine signaling 2 (SOCS2), an intracellular protein induced by cytokines and hormones, modulates the immune response, neural development, neurogenesis and neurotrophic pathways. However, the role of SOCS2 during CM remains unknown. SOCS2 knockout (SOCS2(-/-)) mice infected with PbA show an initial resistance to infection with reduced parasitemia and production of TNF, TGF-β, IL-12 and IL-17 in the brain. Interestingly, in the late phase of infection, SOCS2(-/-) mice display increased parasitemia and reduced Treg cell infiltration, associated with enhanced levels of Th1 and Th17 cells and related cytokines IL-17, IL-6, and TGF-β in the brain. A significant reduction in protective neurotrophic factors, such as glial cell line-derived neurotrophic factor (GDNF) and brain-derived neurotrophic factor (BDNF), was also observed. Moreover, the molecular alterations in the brain of infected SOCS2(-/-) mice were associated with anxiety-related behaviors and cognition impairment. Mechanistically, these results revealed enhanced nitric oxide (NO) production in PbA-infected SOCS2(-/-) mice, and the inhibition of NO synthesis through l-NAME led to a marked decrease in survival, the disruption of parasitemia control and more pronounced anxiety-like behavior. Treatment with l-NAME also shifted the levels of Th1, Th7 and Treg cells in the brains of infected SOCS2(-/-) mice to the background levels observed in infected WT, with remarkable exception of increased CD8(+)IFN(+) T cells and inflammatory monocytes. These results indicate that SOCS2 plays a dual role during PbA infection, being detrimental in the control of the parasite replication but crucial in the regulation of the immune response and production of neurotrophic factors. Here, we provided strong evidence of a critical relationship between SOCS2 and NO in the orchestration of the immune response and development of CM during PbA infection.
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Affiliation(s)
- Fatima Brant
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Aline S Miranda
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lisia Esper
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Melisa Gualdrón-López
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniel Cisalpino
- Department of Microbiology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Danielle da Gloria de Souza
- Department of Microbiology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Milene Alvarenga Rachid
- Department of Pathology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Herbert B Tanowitz
- Department of Pathology and Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mauro Martins Teixeira
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antônio Lucio Teixeira
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fabiana Simão Machado
- Program in Health Sciences: Infectious Diseases and Tropical Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
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21
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Wada T, Sunaga H, Miyata K, Shirasaki H, Uchiyama Y, Shimba S. Aryl Hydrocarbon Receptor Plays Protective Roles against High Fat Diet (HFD)-induced Hepatic Steatosis and the Subsequent Lipotoxicity via Direct Transcriptional Regulation of Socs3 Gene Expression. J Biol Chem 2016; 291:7004-16. [PMID: 26865635 DOI: 10.1074/jbc.m115.693655] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Indexed: 11/06/2022] Open
Abstract
Aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor regulating the expression of genes involved in xenobiotic response. Recent studies have suggested that AhR plays essential roles not only in xenobiotic detoxification but also energy metabolism. Thus, in this study, we studied the roles of AhR in lipid metabolism. Under high fat diet (HFD) challenge, liver-specific AhR knock-out (AhR LKO) mice exhibited severe steatosis, inflammation, and injury in the liver. Gene expression analysis and biochemical study revealed thatde novolipogenesis activity was significantly increased in AhR LKO mice. In contrast, induction of suppressor of cytokine signal 3 (Socs3) expression by HFD was attenuated in the livers of AhR LKO mice. Rescue of theSocs3gene in the liver of AhR LKO mice cancelled the HFD-induced hepatic lipotoxicities. Promoter analysis established Socs3 as novel transcriptional target of AhR. These results indicated that AhR plays a protective role against HFD-induced hepatic steatosis and the subsequent lipotoxicity effects, such as inflammation, and that the mechanism of protection involves the direct transcriptional regulation ofSocs3expression by AhR.
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Affiliation(s)
- Taira Wada
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Hiroshi Sunaga
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Kazuki Miyata
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Haruno Shirasaki
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Yuki Uchiyama
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Shigeki Shimba
- From the Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
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22
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Val CH, Brant F, Miranda AS, Rodrigues FG, Oliveira BCL, Santos EA, Assis DRR, Esper L, Silva BC, Rachid MA, Tanowitz HB, Teixeira AL, Teixeira MM, Régis WCB, Machado FS. Effect of mushroom Agaricus blazei on immune response and development of experimental cerebral malaria. Malar J 2015; 14:311. [PMID: 26260055 PMCID: PMC4531523 DOI: 10.1186/s12936-015-0832-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/03/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cerebral malaria (CM) is debilitating and sometimes fatal. Disease severity has been associated with poor treatment access, therapeutic complexity and drug resistance and, thus, alternative therapies are increasingly necessary. In this study, the effect of the administration of Agaricus blazei, a mushroom of Brazilian origin in a model of CM caused by Plasmodium berghei, strain ANKA, was investigated in mice. METHODS C57BL/6 mice were pre-treated with aqueous extract or fractions of A. blazei, or chloroquine, infected with P. berghei ANKA and then followed by daily administration of A. blazei or chloroquine. Parasitaemia, body weight, survival and clinical signs of the disease were evaluated periodically. The concentration of pro-and anti-inflammatory cytokines, histopathology and in vitro analyses were performed. RESULTS Mice treated with A. blazei aqueous extract or fraction C, that shows antioxidant activity, displayed lower parasitaemia, increased survival, reduced weight loss and protection against the development of CM. The administration of A. blazei resulted in reduced levels of TNF, IL-1β and IL-6 production when compared to untreated P. berghei-infected mice. Agaricus blazei (aqueous extract or fraction C) treated infected mice displayed reduction of brain lesions. Although chloroquine treatment reduced parasitaemia, there was increased production of proinflammatory cytokines and damage in the CNS not observed with A. blazei treatment. Moreover, the in vitro pretreatment of infected erythrocytes followed by in vivo infection resulted in lower parasitaemia, increased survival, and little evidence of clinical signs of disease. CONCLUSIONS This study strongly suggests that the administration of A. blazei (aqueous extract or fraction C) was effective in improving the consequences of CM in mice and may provide novel therapeutic strategies.
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Affiliation(s)
- Cynthia H Val
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
| | - Fátima Brant
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil. .,Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Aline S Miranda
- Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Flávia G Rodrigues
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
| | - Bruno C L Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
| | - Elândia A Santos
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
| | - Diego R R Assis
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
| | - Lísia Esper
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil. .,Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Bruno C Silva
- Department of Pathology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Milene A Rachid
- Department of Pathology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Herbert B Tanowitz
- Department of Pathology and Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Antônio L Teixeira
- Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil. .,Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Wiliam C B Régis
- Programa de Pós Graduação em Biologia de Vertebrados da Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Fabiana S Machado
- Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Bloco O4, 190 Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil. .,Programme in Health Sciences: Infectious Diseases and Tropical Medicine, Medical School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
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23
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Pallotta MT, Fallarino F, Matino D, Macchiarulo A, Orabona C. AhR-Mediated, Non-Genomic Modulation of IDO1 Function. Front Immunol 2014; 5:497. [PMID: 25360135 PMCID: PMC4197771 DOI: 10.3389/fimmu.2014.00497] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 09/24/2014] [Indexed: 01/01/2023] Open
Abstract
The evolutionary process has conferred a dual – enzymatic and signaling – function on the ancestral metabolic enzyme indoleamine 2,3-dioxygenase 1 (IDO1), which has long been known for converting the essential amino acid tryptophan (TRP) into neuroactive and immunoactive catabolites (kynurenines). In addition to TRP catabolic activity, phosphorylated immunoreceptor tyrosine-based inhibitory motifs, present in the IDO1 protein, act as docking sites for different molecular partners, which activate positive (transcriptional) or negative (post-translational) modulation of IDO1 protein. The ligand-operated transcription factor aryl hydrocarbon receptor (AhR) contributes to Ido1 transcription, and it can be operated by both exogenous and endogenous ligands, including l-kynurenine itself, the first byproduct of TRP catabolism. Ligand-bound AhR is also a component of a ubiquitin ligase complex responsible for regulatory proteolysis of different target proteins. Because IDO1 half-life is controlled by the ubiquitin–proteasome system, we here discuss the possibility that AhR, in addition to enhancing Ido1 transcription, contributes to IDO1 regulation by a non-genomic mechanism affecting the protein’s half-life.
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Affiliation(s)
- Maria Teresa Pallotta
- Pharmacology Section, Department of Experimental Medicine, University of Perugia , Perugia , Italy
| | - Francesca Fallarino
- Pharmacology Section, Department of Experimental Medicine, University of Perugia , Perugia , Italy
| | - Davide Matino
- Pharmacology Section, Department of Experimental Medicine, University of Perugia , Perugia , Italy
| | - Antonio Macchiarulo
- Department of Pharmaceutical Sciences, University of Perugia , Perugia , Italy
| | - Ciriana Orabona
- Pharmacology Section, Department of Experimental Medicine, University of Perugia , Perugia , Italy
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