1
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Kharnaf M, Zafar F, Hogue S, Rosenfeldt L, Cantrell RL, Sharma BK, Pearson A, Sprague C, Leino D, Abplanalp WA, Zelek WM, McCrae KR, Shim YJ, Morales D, Tweddell J, Qualls JE, Palumbo JS. Factor XII promotes the thromboinflammatory response in a rat model of venoarterial extracorporeal membrane oxygenation. J Thorac Cardiovasc Surg 2023:S0022-5223(23)00756-0. [PMID: 37683721 PMCID: PMC10918029 DOI: 10.1016/j.jtcvs.2023.08.045] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/26/2023] [Accepted: 08/15/2023] [Indexed: 09/10/2023]
Abstract
BACKGROUND Factor XII (FXII) is a multifunctional protease capable of activating thrombotic and inflammatory pathways. FXII has been linked to thrombosis in extracorporeal membrane oxygenation (ECMO), but the role of FXII in ECMO-induced inflammatory complications has not been studied. We used novel gene-targeted FXII- deficient rats to evaluate the role of FXII in ECMO-induced thromboinflammation. METHODS FXII-deficient (FXII-/-) Sprague-Dawley rats were generated using CRISPR/Cas9. A minimally invasive venoarterial (VA) ECMO model was used to compare wild-type (WT) and FXII-/- rats in 2 separate experimental cohorts: rats placed on ECMO without pharmacologic anticoagulation and rats anticoagulated with argatroban. Rats were maintained on ECMO for 1 hour or until circuit failure occurred. Comparisons were made with unchallenged rats and rats that underwent a sham surgical procedure without ECMO. RESULTS FXII-/- rats were maintained on ECMO without pharmacologic anticoagulation with low resistance throughout the 1-hour experiment. In contrast, WT rats placed on ECMO without anticoagulation developed thrombotic circuit failure within 10 minutes. Argatroban provided a means to maintain WT and FXII-/- rats on ECMO for the 1-hour time frame without thrombotic complications. Analyses of these rats demonstrated that ECMO resulted in increased neutrophil migration into the liver that was significantly blunted by FXII deficiency. ECMO also resulted in increases in high molecular weight kininogen cleavage and complement activation that were abrogated by genetic deletion of FXII. CONCLUSIONS FXII initiates hemostatic system activation and key inflammatory sequelae in ECMO, suggesting that therapies targeting FXII could limit both thromboembolism and inopportune inflammatory complications in this setting.
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Affiliation(s)
- Mousa Kharnaf
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio.
| | - Farhan Zafar
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Spencer Hogue
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Leah Rosenfeldt
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Rachel L Cantrell
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Bal Krishan Sharma
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Amelia Pearson
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Cassandra Sprague
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Daniel Leino
- Department of Pathology, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - William A Abplanalp
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Wioleta M Zelek
- Systems Immunity Research Institute and Dementia Research Institute, Cardiff University, Cardiff, United Kingdom
| | - Keith R McCrae
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Young Jun Shim
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, Ohio
| | - David Morales
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - James Tweddell
- The Heart Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Joseph E Qualls
- Department of Biological Sciences, St Elizabeth College of Natural and Health Sciences, Thomas More University, Crestview Hills, Ky
| | - Joseph S Palumbo
- Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, Ohio.
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2
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Crowther RR, Schmidt SM, Lange SM, McKell MC, Robillard MC, Zhao J, Haffey WD, Wyder MA, Greis KD, Setchell KDR, Qualls JE. Cutting Edge: l-Arginine Transfer from Antigen-Presenting Cells Sustains CD4 + T Cell Viability and Proliferation. J Immunol 2022; 208:793-798. [PMID: 35101895 PMCID: PMC8820592 DOI: 10.4049/jimmunol.2100652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 12/01/2021] [Indexed: 11/19/2022]
Abstract
Metabolomics analyses suggest changes in amino acid abundance, particularly l-arginine (L-ARG), occur in patients with tuberculosis. Immune cells require L-ARG to fuel effector functions following infection. We have previously described an L-ARG synthesis pathway in immune cells; however, its role in APCs has yet to be uncovered. Using a coculture system with mycobacterial-specific CD4+ T cells, we show APC L-ARG synthesis supported T cell viability and proliferation, and activated T cells contained APC-derived L-ARG. We hypothesize that APCs supply L-ARG to support T cell activation under nutrient-limiting conditions. This work expands the current model of APC-T cell interactions and provides insight into the effects of nutrient availability in immune cells.
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Affiliation(s)
- Rebecca R Crowther
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH
- Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Stephanie M Schmidt
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Shannon M Lange
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Melanie C McKell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Michelle C Robillard
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Junfang Zhao
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Wendy D Haffey
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH; and
- Proteomics Laboratory, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Michael A Wyder
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH; and
- Proteomics Laboratory, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Kenneth D Greis
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH; and
- Proteomics Laboratory, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Kenneth D R Setchell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH;
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
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3
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Woo V, Eshleman EM, Hashimoto-Hill S, Whitt J, Wu SE, Engleman L, Rice T, Karns R, Qualls JE, Haslam DB, Vallance BA, Alenghat T. Commensal segmented filamentous bacteria-derived retinoic acid primes host defense to intestinal infection. Cell Host Microbe 2021; 29:1744-1756.e5. [PMID: 34678170 DOI: 10.1016/j.chom.2021.09.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 07/14/2021] [Accepted: 09/21/2021] [Indexed: 12/30/2022]
Abstract
Interactions between the microbiota and mammalian host are essential for defense against infection, but the microbial-derived cues that mediate this relationship remain unclear. Here, we find that intestinal epithelial cell (IEC)-associated commensal bacteria, segmented filamentous bacteria (SFB), promote early protection against the pathogen Citrobacter rodentium, independent of CD4+ T cells. SFB induced histone modifications in IECs at sites enriched for retinoic acid receptor motifs, suggesting that SFB may enhance defense through retinoic acid (RA). Consistent with this, inhibiting RA signaling suppressed SFB-induced protection. Intestinal RA levels were elevated in SFB mice, despite the inhibition of mammalian RA production, indicating that SFB directly modulate RA. Interestingly, RA was produced by intestinal bacteria, and the loss of bacterial-intrinsic aldehyde dehydrogenase activity decreased the RA levels and increased infection. These data reveal RA as an unexpected microbiota-derived metabolite that primes innate defense and suggests that pre- and probiotic approaches to elevate RA could prevent or combat infections.
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Affiliation(s)
- Vivienne Woo
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Emily M Eshleman
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Seika Hashimoto-Hill
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Jordan Whitt
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Shu-En Wu
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Laura Engleman
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Taylor Rice
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Rebekah Karns
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Joseph E Qualls
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - David B Haslam
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Bruce A Vallance
- Department of Pediatrics, BC Children's Hospital Research Institute and the University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Theresa Alenghat
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.
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4
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McKell MC, Crowther RR, Schmidt SM, Robillard MC, Cantrell R, Lehn MA, Janssen EM, Qualls JE. Promotion of Anti-Tuberculosis Macrophage Activity by L-Arginine in the Absence of Nitric Oxide. Front Immunol 2021; 12:653571. [PMID: 34054815 PMCID: PMC8160513 DOI: 10.3389/fimmu.2021.653571] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/26/2021] [Indexed: 12/31/2022] Open
Abstract
Macrophages are indispensable immune cells tasked at eliminating intracellular pathogens. Mycobacterium tuberculosis (Mtb), one of the most virulent intracellular bacterial pathogens known to man, infects and resides within macrophages. While macrophages can be provoked by extracellular stimuli to inhibit and kill Mtb bacilli, these host defense mechanisms can be blocked by limiting nutritional metabolites, such as amino acids. The amino acid L-arginine has been well described to enhance immune function, especially in the context of driving macrophage nitric oxide (NO) production in mice. In this study, we aimed to establish the necessity of L-arginine on anti-Mtb macrophage function independent of NO. Utilizing an in vitro system, we identified that macrophages relied on NO for only half of their L-arginine-mediated host defenses and this L-arginine-mediated defense in the absence of NO was associated with enhanced macrophage numbers and viability. Additionally, we observed macrophage glycolysis to be driven by both L-arginine and mechanistic target of rapamycin (mTOR), and inhibition of glycolysis or mTOR reduced macrophage control of Mtb as well as macrophage number and viability in the presence of L-arginine. Our data underscore L-arginine as an essential nutrient for macrophage function, not only by fueling anti-mycobacterial NO production, but also as a central regulator of macrophage metabolism and additional host defense mechanisms.
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Affiliation(s)
- Melanie C McKell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Rebecca R Crowther
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Stephanie M Schmidt
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Michelle C Robillard
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Rachel Cantrell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Maria A Lehn
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Edith M Janssen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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5
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Crowther RR, Schmidt SM, Zhao J, McKell MC, Setchell KD, Qualls JE. Dendritic Cells Supply CD4+ T Cells With L-arginine. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.53.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis, is responsible for over 1 million deaths each year. Mycobacteria-infected dendritic cells (DCs) migrate to the lymph node to initiate adaptive immune priming, which is vital to antimycobacterial immunity. This response is intimately tied to nutrient availability – especially the amino acid L-arginine (L-ARG), metabolism of which is altered in TB patients. We have characterized a pathway utilized by immune cells to synthesize L-ARG. Loss of L-ARG synthesis in CD11c+ cells, which includes DCs, results in increased mycobacterial burden following infection in mice. To characterize the role of this pathway in DCs, we developed a co-culture system with mycobacterial-specific CD4+ T cells and bone marrow derived DCs. Using CD4+ T cells and DCs with differing capabilities of L-ARG synthesis, we found 1) DC L-ARG synthesis supports CD4+ T cell proliferation and 2) activated T cells contain DC-derived L-ARG. We hypothesize DCs “share” synthesized L-ARG to support CD4+ T cell activation when L-ARG is limiting. Our data suggest nutrient availability as a 4th signal – following antigen presentation, co-stimulation, and cytokine receptor ligation – required for T cell activation. This work expands the current model of DC-T cell interactions and provides insight into the effects of nutrient availability in immune cells.
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6
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Crowther RR, Qualls JE. Metabolic Regulation of Immune Responses to Mycobacterium tuberculosis: A Spotlight on L-Arginine and L-Tryptophan Metabolism. Front Immunol 2021; 11:628432. [PMID: 33633745 PMCID: PMC7900187 DOI: 10.3389/fimmu.2020.628432] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 12/30/2020] [Indexed: 12/16/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), is a leading cause of death worldwide. Despite decades of research, there is still much to be uncovered regarding the immune response to Mtb infection. Here, we summarize the current knowledge on anti-Mtb immunity, with a spotlight on immune cell amino acid metabolism. Specifically, we discuss L-arginine and L-tryptophan, focusing on their requirements, regulatory roles, and potential use as adjunctive therapy in TB patients. By continuing to uncover the immune cell contribution during Mtb infection and how amino acid utilization regulates their functions, it is anticipated that novel host-directed therapies may be developed and/or refined, helping to eradicate TB.
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Affiliation(s)
- Rebecca R Crowther
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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7
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Huaman MA, Qualls JE, Jose S, Schmidt SM, Moussa A, Kuhel DG, Konaniah E, Komaravolu RK, Fichtenbaum CJ, Deepe GS, Hui DY. Mycobacterium bovis Bacille-Calmette-Guérin Infection Aggravates Atherosclerosis. Front Immunol 2020; 11:607957. [PMID: 33391278 PMCID: PMC7775372 DOI: 10.3389/fimmu.2020.607957] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022] Open
Abstract
Tuberculosis has been associated with increased risk of atherosclerotic cardiovascular disease. To examine whether mycobacterial infection exacerbates atherosclerosis development in experimental conditions, we infected low-density lipoprotein receptor knockout (Ldlr-/-) mice with Mycobacterium bovis Bacille-Calmette-Guérin (BCG), an attenuated strain of the Mycobacterium tuberculosis complex. Twelve-week old male Ldlr-/- mice were infected with BCG (0.3–3.0x106 colony-forming units) via the intranasal route. Mice were subsequently fed a western-type diet containing 21% fat and 0.2% cholesterol for up to 16 weeks. Age-matched uninfected Ldlr-/- mice fed with an identical diet served as controls. Atherosclerotic lesions in aorta were examined using Oil Red O staining. Changes induced by BCG infection on the immunophenotyping profile of circulating T lymphocytes and monocytes were assessed using flow cytometry. BCG infection increased atherosclerotic lesions in en face aorta after 8 weeks (plaque ratio; 0.021±0.01 vs. 0.013±0.01; p = 0.011) and 16 weeks (plaque ratio, 0.15±0.13 vs. 0.06±0.02; p = 0.003). No significant differences in plasma cholesterol or triglyceride levels were observed between infected and uninfected mice. Compared to uninfected mice, BCG infection increased systemic CD4/CD8 T cell ratio and the proportion of Ly6Clow non-classical monocytes at weeks 8 and 16. Aortic plaque ratios correlated with CD4/CD8 T cell ratios (Spearman’s rho = 0.498; p = 0.001) and the proportion of Ly6Clow non-classical monocytes (Spearman’s rho = 0.629; p < 0.001) at week 16. In conclusion, BCG infection expanded the proportion of CD4+ T cell and Ly6Clow monocytes, and aggravated atherosclerosis formation in the aortas of hyperlipidemic Ldlr-/- mice. Our results indicate that mycobacterial infection is capable of enhancing atherosclerosis development.
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Affiliation(s)
- Moises A Huaman
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Joseph E Qualls
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Shinsmon Jose
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Stephanie M Schmidt
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Anissa Moussa
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - David G Kuhel
- Metabolic Diseases Research Center, Department of Pathology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Eddy Konaniah
- Metabolic Diseases Research Center, Department of Pathology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Ravi K Komaravolu
- Metabolic Diseases Research Center, Department of Pathology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Carl J Fichtenbaum
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - George S Deepe
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - David Y Hui
- Metabolic Diseases Research Center, Department of Pathology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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8
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Oates JR, McKell MC, Moreno-Fernandez ME, Damen MSMA, Deepe GS, Qualls JE, Divanovic S. Macrophage Function in the Pathogenesis of Non-alcoholic Fatty Liver Disease: The Mac Attack. Front Immunol 2019; 10:2893. [PMID: 31921154 PMCID: PMC6922022 DOI: 10.3389/fimmu.2019.02893] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 11/26/2019] [Indexed: 12/15/2022] Open
Abstract
Obesity is a prevalent predisposing factor to non-alcoholic fatty liver disease (NAFLD), the most common chronic liver disease in the developed world. NAFLD spectrum of disease involves progression from steatosis (NAFL), to steatohepatitis (NASH), cirrhosis and hepatocellular carcinoma (HCC). Despite clinical and public health significance, current FDA approved therapies for NAFLD are lacking in part due to insufficient understanding of pathogenic mechanisms driving disease progression. The etiology of NAFLD is multifactorial. The induction of both systemic and tissue inflammation consequential of skewed immune cell metabolic state, polarization, tissue recruitment, and activation are central to NAFLD progression. Here, we review the current understanding of the above stated cellular and molecular processes that govern macrophage contribution to NAFLD pathogenesis and how adipose tissue and liver crosstalk modulates macrophage function. Notably, the manipulation of such events may lead to the development of new therapies for NAFLD.
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Affiliation(s)
- Jarren R Oates
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Melanie C McKell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Maria E Moreno-Fernandez
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Michelle S M A Damen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - George S Deepe
- Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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9
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Lange SM, McKell MC, Schmidt SM, Zhao J, Crowther RR, Green LC, Bricker RL, Arnett E, Köhler SE, Schlesinger LS, Setchell KDR, Qualls JE. l-Arginine Synthesis from l-Citrulline in Myeloid Cells Drives Host Defense against Mycobacteria In Vivo. J Immunol 2019; 202:1747-1754. [PMID: 30710047 DOI: 10.4049/jimmunol.1801569] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/31/2018] [Indexed: 12/31/2022]
Abstract
Immunonutrition as a therapeutic approach is rapidly gaining interest in the fight against infection. Targeting l-arginine metabolism is intriguing, considering this amino acid is the substrate for antimicrobial NO production by macrophages. The importance of l-arginine during infection is supported by the finding that inhibiting its synthesis from its precursor l-citrulline blunts host defense. During the first few weeks following pulmonary mycobacterial infection, we found a drastic increase in l-citrulline in the lung, even though serum concentrations were unaltered. This correlated with increased gene expression of the l-citrulline-generating (i.e., iNOS) and l-citrulline-using (i.e., Ass1) enzymes in key myeloid populations. Eliminating l-arginine synthesis from l-citrulline in myeloid cells via conditional deletion of either Ass1 or Asl resulted in increased Mycobacterium bovis bacillus Calmette-Guérin and Mycobacterium tuberculosis H37Rv burden in the lungs compared with controls. Our data illustrate the necessity of l-citrulline metabolism for myeloid defense against mycobacterial infection and highlight the potential for host-directed therapy against mycobacterial disease targeting this nutrient and/or its metabolic pathway.
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Affiliation(s)
- Shannon M Lange
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.,Immunology Graduate Program, College of Medicine, University of Cincinnati, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Melanie C McKell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.,Immunology Graduate Program, College of Medicine, University of Cincinnati, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Stephanie M Schmidt
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Junfang Zhao
- Mass Spectrometry Core, Division of Pathology and Laboratory Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Rebecca R Crowther
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.,Immunology Graduate Program, College of Medicine, University of Cincinnati, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.,Medical Scientist Training Program, College of Medicine, University of Cincinnati, Cincinnati, OH 45267
| | - Lisa C Green
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.,Molecular, Cellular, and Biochemical Pharmacology Graduate Program, College of Medicine, University of Cincinnati, Cincinnati, OH 45267
| | - Rebecca L Bricker
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Eusondia Arnett
- Texas Biomedical Research Institute, San Antonio, TX 78245; and
| | - S Eleonore Köhler
- Department of Anatomy and Embryology, Maastricht University, 6229 HA Maastricht, the Netherlands
| | | | - Kenneth D R Setchell
- Mass Spectrometry Core, Division of Pathology and Laboratory Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229; .,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
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10
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Lange SM, McKell MC, Schmidt SM, Hossfeld AP, Chaturvedi V, Kinder JM, McAlees JW, Lewkowich IP, Way SS, Turner J, Qualls JE. l-Citrulline Metabolism in Mice Augments CD4 + T Cell Proliferation and Cytokine Production In Vitro, and Accumulation in the Mycobacteria-Infected Lung. Front Immunol 2017; 8:1561. [PMID: 29201027 PMCID: PMC5696333 DOI: 10.3389/fimmu.2017.01561] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 10/31/2017] [Indexed: 12/25/2022] Open
Abstract
Activation, recruitment, and effector function of T lymphocytes are essential for control of mycobacterial infection. These processes are tightly regulated in T cells by the availability of l-arginine within the microenvironment. In turn, mycobacterial infection dampens T cell responsiveness through arginase induction in myeloid cells, promoting sequestration of l-arginine within the local milieu. Here, we show T cells can replenish intracellular l-arginine through metabolism of l-citrulline to mediate inflammatory function, allowing anti-mycobacterial T cells to overcome arginase-mediated suppression. Furthermore, T cell l-citrulline metabolism is necessary for accumulation of CD4+ T cells at the site of infection, suggesting this metabolic pathway is involved during anti-mycobacterial T cell immunity in vivo. Together, these findings establish a contribution for l-arginine synthesis by T cells during mycobacterial infection, and implicate l-citrulline as a potential immuno-nutrient to modulate host immunity.
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Affiliation(s)
- Shannon M Lange
- Laboratory of Dr. Joseph E. Qualls, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati/Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Melanie C McKell
- Laboratory of Dr. Joseph E. Qualls, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati/Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Stephanie M Schmidt
- Laboratory of Dr. Joseph E. Qualls, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Austin P Hossfeld
- Laboratory of Dr. Joanne Turner, Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Vandana Chaturvedi
- Laboratory of Dr. Sing Sing Way, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Jeremy M Kinder
- Laboratory of Dr. Sing Sing Way, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Jaclyn W McAlees
- Laboratory of Dr. Ian P. Lewkowich, Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Ian P Lewkowich
- Laboratory of Dr. Ian P. Lewkowich, Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Sing Sing Way
- Laboratory of Dr. Sing Sing Way, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Joanne Turner
- Laboratory of Dr. Joanne Turner, Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, United States.,Texas Biomedical Research Institute, San Antonio, TX, United States
| | - Joseph E Qualls
- Laboratory of Dr. Joseph E. Qualls, Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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11
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Bertaux-Skeirik N, Wunderlich M, Teal E, Chakrabarti J, Biesiada J, Mahe M, Sundaram N, Gabre J, Hawkins J, Jian G, Engevik AC, Yang L, Wang J, Goldenring JR, Qualls JE, Medvedovic M, Helmrath MA, Diwan T, Mulloy JC, Zavros Y. CD44 variant isoform 9 emerges in response to injury and contributes to the regeneration of the gastric epithelium. J Pathol 2017; 242:463-475. [PMID: 28497484 DOI: 10.1002/path.4918] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [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: 12/05/2016] [Revised: 03/28/2017] [Accepted: 04/13/2017] [Indexed: 12/26/2022]
Abstract
The CD44 gene encodes several protein isoforms due to alternative splicing and post translational modifications. Given that CD44 variant isoform 9 (CD44v9) is expressed within Spasmolytic Polypeptide/TFF2-Expressing Metaplasia (SPEM) glands during repair, CD44v9 may be play a funcitonal role during the process of regeneration of the gastric epithelium. Here we hypothesize that CD44v9 marks a regenerative cell lineage responsive to infiltrating macrophages during regeneration of the gastric epithelium. Ulcers were induced in CD44-deficient (CD44KO) and C57BL/6 (BL6) mice by a localized application of acetic acid to the serosal surface of the stomach. Gastric organoids expressing CD44v9 were derived from mouse stomachs and transplanted at the ulcer site of CD44KO mice. Ulcers, CD44v9 expression, proliferation and histology were measured 1, 3, 5 and 7-days post-injury. Human-derived gastric organoids were generated from stomach tissue collected from elderly (>55 years) or young (14-20 years) patients. Organoids were transplanted into the stomachs of NOD scid gamma (NSG) mice at the site of injury. Gastric injury was induced in NRG-SGM3 (NRGS) mice harboring human-derived immune cells (hnNRGS) and the immune profile anlayzed by CyTOF. CD44v9 expression emerged within regenerating glands the ulcer margin in response to injury. While ulcers in BL6 mice healed within 7-days post-injury, CD44KO mice exhibited loss of repair and epithelial regeneration. Ulcer healing was promoted in CD44KO mice by transplanted CD55v9-expressing gastric organoids. NSG mice exhibited loss of CD44v9 expression and gastric repair. Transplantation of human-derived gastric organoids from young, but not aged stomachs promoted repair in NSG mouse stomachs in response to injury. Finally, compared to NRGS mice, huNRGS animals exhibited reduced ulcer sizes, an infiltration of human CD162+ macrophages and an emergence of CD44v9 expression in SPEM. Thus, during repair of the gastic epithelium CD44v9 emerges within a regenerative cell lineage that coincides with macrophage inflitration within the injured mucosa. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Nina Bertaux-Skeirik
- Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Mark Wunderlich
- Cancer and Blood Disease Institute, Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Emma Teal
- Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Jayati Chakrabarti
- Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Jacek Biesiada
- Department of Environmental Health, Division of Biostatistics and Bioinformatics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Maxime Mahe
- Department of Pediatric Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Nambirajan Sundaram
- Department of Pediatric Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Joel Gabre
- Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Jennifer Hawkins
- Department of Pediatric Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Gao Jian
- Department of Pediatrics, WF Maternal and Child Health Hospital, 76 Qingnian Road, Weifang, 261011, PR China
| | - Amy C Engevik
- Nashville VA Medical Center and Departments of Surgery and Cell and Developmental Biology and the Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Li Yang
- Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Jiang Wang
- Department of Pathology and Lab Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - James R Goldenring
- Nashville VA Medical Center and Departments of Surgery and Cell and Developmental Biology and the Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Joseph E Qualls
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Mario Medvedovic
- Department of Environmental Health, Division of Biostatistics and Bioinformatics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Michael A Helmrath
- Department of Pediatric Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Tayyab Diwan
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - James C Mulloy
- Cancer and Blood Disease Institute, Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Yana Zavros
- Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, OH, USA
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12
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Van de Velde LA, Subramanian C, Smith AM, Barron L, Qualls JE, Neale G, Alfonso-Pecchio A, Jackowski S, Rock CO, Wynn TA, Murray PJ. T Cells Encountering Myeloid Cells Programmed for Amino Acid-dependent Immunosuppression Use Rictor/mTORC2 Protein for Proliferative Checkpoint Decisions. J Biol Chem 2016; 292:15-30. [PMID: 27903651 DOI: 10.1074/jbc.m116.766238] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [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: 11/03/2016] [Indexed: 01/22/2023] Open
Abstract
Modulation of T cell proliferation and function by immunoregulatory myeloid cells are an essential means of preventing self-reactivity and restoring tissue homeostasis. Consumption of amino acids such as arginine and tryptophan by immunoregulatory macrophages is one pathway that suppresses local T cell proliferation. Using a reduced complexity in vitro macrophage-T cell co-culture system, we show that macrophage arginase-1 is the only factor required by M2 macrophages to block T cells in G1, and this effect is mediated by l-arginine elimination rather than metabolite generation. Tracking how T cells adjust their metabolism when deprived of arginine revealed the significance of macrophage-mediated arginine deprivation to T cells. We found mTORC1 activity was unaffected in the initial G1 block. After 2 days of arginine deprivation, mTORC1 activity declined paralleling a selective down-regulation of SREBP target gene expression, whereas mRNAs involved in glycolysis, gluconeogenesis, and T cell activation were unaffected. Cell cycle arrest was reversible at any point by exogenous arginine, suggesting starved T cells remain poised awaiting nutrients. Arginine deprivation-induced cell cycle arrest was mediated in part by Rictor/mTORC2, providing evidence that this nutrient recognition pathway is a central component of how T cells measure environmental arginine.
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Affiliation(s)
| | | | - Amber M Smith
- From the Departments of Infectious Diseases.,Immunology, and
| | - Luke Barron
- the Laboratory of Parasitic Diseases, NIAID, National Institutes of Health, Bethesda, Maryland 20892
| | - Joseph E Qualls
- From the Departments of Infectious Diseases.,Immunology, and
| | - Geoffrey Neale
- Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105 and
| | | | | | | | - Thomas A Wynn
- the Laboratory of Parasitic Diseases, NIAID, National Institutes of Health, Bethesda, Maryland 20892
| | - Peter J Murray
- From the Departments of Infectious Diseases, .,Immunology, and
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13
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Marigo I, Zilio S, Desantis G, Mlecnik B, Agnellini AHR, Ugel S, Sasso MS, Qualls JE, Kratochvill F, Zanovello P, Molon B, Ries CH, Runza V, Hoves S, Bilocq AM, Bindea G, Mazza EMC, Bicciato S, Galon J, Murray PJ, Bronte V. T Cell Cancer Therapy Requires CD40-CD40L Activation of Tumor Necrosis Factor and Inducible Nitric-Oxide-Synthase-Producing Dendritic Cells. Cancer Cell 2016; 30:651. [PMID: 27728809 DOI: 10.1016/j.ccell.2016.09.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Marigo I, Zilio S, Desantis G, Mlecnik B, Agnellini AHR, Ugel S, Sasso MS, Qualls JE, Kratochvill F, Zanovello P, Molon B, Ries CH, Runza V, Hoves S, Bilocq AM, Bindea G, Mazza EMC, Bicciato S, Galon J, Murray PJ, Bronte V. T Cell Cancer Therapy Requires CD40-CD40L Activation of Tumor Necrosis Factor and Inducible Nitric-Oxide-Synthase-Producing Dendritic Cells. Cancer Cell 2016; 30:377-390. [PMID: 27622331 PMCID: PMC5023283 DOI: 10.1016/j.ccell.2016.08.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 05/13/2016] [Accepted: 08/09/2016] [Indexed: 12/30/2022]
Abstract
Effective cancer immunotherapy requires overcoming immunosuppressive tumor microenvironments. We found that local nitric oxide (NO) production by tumor-infiltrating myeloid cells is important for adoptively transferred CD8(+) cytotoxic T cells to destroy tumors. These myeloid cells are phenotypically similar to inducible nitric oxide synthase (NOS2)- and tumor necrosis factor (TNF)-producing dendritic cells (DC), or Tip-DCs. Depletion of immunosuppressive, colony stimulating factor 1 receptor (CSF-1R)-dependent arginase 1(+) myeloid cells enhanced NO-dependent tumor killing. Tumor elimination via NOS2 required the CD40-CD40L pathway. We also uncovered a strong correlation between survival of colorectal cancer patients and NOS2, CD40, and TNF expression in their tumors. Our results identify a network of pro-tumor factors that can be targeted to boost cancer immunotherapies.
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Affiliation(s)
- Ilaria Marigo
- Istituto Oncologico Veneto, IOV-IRCCS, 35128 Padova, Italy.
| | - Serena Zilio
- Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
| | | | - Bernhard Mlecnik
- INSERM UMRS1138, Laboratory of Integrative Cancer Immunology, Paris 75006, France; Université Paris Descartes, Paris 75006, France; Cordeliers Research Centre, Université Pierre et Marie Curie Paris 6, Paris 75006, France
| | - Andrielly H R Agnellini
- Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
| | - Stefano Ugel
- Department of Medicine, Verona University Hospital, 37134 Verona, Italy
| | - Maria Stella Sasso
- Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
| | - Joseph E Qualls
- Departments of Infectious Diseases and Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Franz Kratochvill
- Departments of Infectious Diseases and Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Paola Zanovello
- Istituto Oncologico Veneto, IOV-IRCCS, 35128 Padova, Italy; Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
| | - Barbara Molon
- Istituto Oncologico Veneto, IOV-IRCCS, 35128 Padova, Italy
| | - Carola H Ries
- Roche Innovation Center Munich, Oncology Discovery, Pharma Research and Early Development, 82377 Penzberg, Germany
| | - Valeria Runza
- Roche Innovation Center Munich, Oncology Discovery, Pharma Research and Early Development, 82377 Penzberg, Germany
| | - Sabine Hoves
- Roche Innovation Center Munich, Oncology Discovery, Pharma Research and Early Development, 82377 Penzberg, Germany
| | - Amélie M Bilocq
- INSERM UMRS1138, Laboratory of Integrative Cancer Immunology, Paris 75006, France; Université Paris Descartes, Paris 75006, France; Cordeliers Research Centre, Université Pierre et Marie Curie Paris 6, Paris 75006, France
| | - Gabriela Bindea
- INSERM UMRS1138, Laboratory of Integrative Cancer Immunology, Paris 75006, France; Université Paris Descartes, Paris 75006, France; Cordeliers Research Centre, Université Pierre et Marie Curie Paris 6, Paris 75006, France
| | - Emilia M C Mazza
- Department of Life Sciences, Center for Genome Research, University of Modena and Reggio Emilia, 41100 Modena, Italy
| | - Silvio Bicciato
- Department of Life Sciences, Center for Genome Research, University of Modena and Reggio Emilia, 41100 Modena, Italy
| | - Jérôme Galon
- INSERM UMRS1138, Laboratory of Integrative Cancer Immunology, Paris 75006, France; Université Paris Descartes, Paris 75006, France; Cordeliers Research Centre, Université Pierre et Marie Curie Paris 6, Paris 75006, France
| | - Peter J Murray
- Departments of Infectious Diseases and Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Vincenzo Bronte
- Department of Medicine, Verona University Hospital, 37134 Verona, Italy.
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15
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Kratochvill F, Neale G, Haverkamp JM, Van de Velde LA, Smith AM, Kawauchi D, McEvoy J, Roussel MF, Dyer MA, Qualls JE, Murray PJ. TNF Counterbalances the Emergence of M2 Tumor Macrophages. Cell Rep 2015; 12:1902-14. [PMID: 26365184 DOI: 10.1016/j.celrep.2015.08.033] [Citation(s) in RCA: 206] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 07/23/2015] [Accepted: 08/07/2015] [Indexed: 11/26/2022] Open
Abstract
Cancer can involve non-resolving, persistent inflammation where varying numbers of tumor-associated macrophages (TAMs) infiltrate and adopt different activation states between anti-tumor M1 and pro-tumor M2 phenotypes. Here, we resolve a cascade causing differential macrophage phenotypes in the tumor microenvironment. Reduction in TNF mRNA production or loss of type I TNF receptor signaling resulted in a striking pattern of enhanced M2 mRNA expression. M2 gene expression was driven in part by IL-13 from eosinophils co-recruited with inflammatory monocytes, a pathway that was suppressed by TNF. Our data define regulatory nodes within the tumor microenvironment that balance M1 and M2 populations. Our results show macrophage polarization in cancer is dynamic and dependent on the balance between TNF and IL-13, thus providing a strategy for manipulating TAMs.
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Affiliation(s)
- Franz Kratochvill
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Geoffrey Neale
- Hartwell Center for Biotechnology and Bioinformatics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jessica M Haverkamp
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Lee-Ann Van de Velde
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Amber M Smith
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Daisuke Kawauchi
- Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Justina McEvoy
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Martine F Roussel
- Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Michael A Dyer
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Joseph E Qualls
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Peter J Murray
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
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16
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Rapovy SM, Zhao J, Bricker RL, Schmidt SM, Setchell KDR, Qualls JE. Differential Requirements for L-Citrulline and L-Arginine during Antimycobacterial Macrophage Activity. J Immunol 2015; 195:3293-300. [PMID: 26311904 PMCID: PMC6432794 DOI: 10.4049/jimmunol.1500800] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 07/28/2015] [Indexed: 12/26/2022]
Abstract
Microbicidal NO production is reliant on inducible NO synthase-mediated L-arginine metabolism in macrophages (MΦs). However, L-arginine supply can be restricted by arginase activity, resulting in inefficient NO output and inhibition of antimicrobial MΦ function. MΦs circumvent this by converting L-citrulline to L-arginine, thereby resupplying substrate for NO production. In this article, we define the metabolic signature of mycobacteria-infected murine MΦs supplied L-arginine, L-citrulline, or both amino acids. Using liquid chromatography-tandem mass spectrometry, we determined that L-arginine synthesized from L-citrulline was less effective as a substrate for arginase-mediated L-ornithine production compared with L-arginine directly imported from the extracellular milieu. Following Mycobacterium bovis bacillus Calmette-Guérin infection and costimulation with IFN-γ, we observed that MΦ arginase activity did not inhibit production of NO derived from L-citrulline, contrary to NO inhibition witnessed when MΦs were cultured in L-arginine. Furthermore, we found that arginase-expressing MΦs preferred L-citrulline over L-arginine for the promotion of antimycobacterial activity. We expect that defining the consequences of L-citrulline metabolism in MΦs will provide novel approaches for enhancing immunity, especially in the context of mycobacterial disease.
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Affiliation(s)
- Shannon M Rapovy
- Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Junfang Zhao
- Division of Pathology and Laboratory Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Rebecca L Bricker
- Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Stephanie M Schmidt
- Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Kenneth D R Setchell
- Division of Pathology and Laboratory Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
| | - Joseph E Qualls
- Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
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17
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Kratochvill F, Gratz N, Qualls JE, Van De Velde LA, Chi H, Kovarik P, Murray PJ. Tristetraprolin Limits Inflammatory Cytokine Production in Tumor-Associated Macrophages in an mRNA Decay-Independent Manner. Cancer Res 2015; 75:3054-64. [PMID: 26183929 DOI: 10.1158/0008-5472.can-15-0205] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/08/2015] [Indexed: 12/14/2022]
Abstract
Tristetraprolin (TTP) is an inducible zinc finger AU-rich RNA-binding protein essential for enforcing degradation of mRNAs encoding inflammatory chemokines and cytokines. Most studies on TTP center on the connection between mRNA half-life and inflammatory output, because loss of TTP amplifies inflammation by increasing the stability of AU-rich mRNAs. Here, we focused on how TTP controls cytokine and chemokine production in the nonresolving inflammation of cancer using tissue-specific approaches. In contrast with model in vitro macrophage systems, we found constitutive TTP expression in late-stage tumor-associated macrophages (TAM). However, TTP's effects on AU-rich mRNA stability were negligible and limited by constitutive p38α MAPK activity, which was the main driver of proinflammatory cytokine production in TAMs at the posttranscriptional level. Instead, elimination of TTP caused excessive protein production of inflammatory mediators, suggesting TTP-dependent translational suppression of AU-rich mRNAs. Manipulation of the p38α-TTP axis in macrophages has significant effects on the growth of tumors and therefore represents a means to manipulate inflammation in the tumor microenvironment.
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Affiliation(s)
- Franz Kratochvill
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Nina Gratz
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Joseph E Qualls
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Lee-Ann Van De Velde
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Pavel Kovarik
- Max F. Perutz Laboratories, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Peter J Murray
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee. Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee.
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18
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Elahi S, Ertelt JM, Kinder JM, Jiang TT, Zhang X, Xin L, Chaturvedi V, Strong BS, Qualls JE, Steinbrecher KA, Kalfa TA, Shaaban AF, Way SS. Immunosuppressive CD71+ erythroid cells compromise neonatal host defence against infection. Nature 2013; 504:158-62. [PMID: 24196717 DOI: 10.1038/nature12675] [Citation(s) in RCA: 278] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 09/18/2013] [Indexed: 12/15/2022]
Abstract
Newborn infants are highly susceptible to infection. This defect in host defence has generally been ascribed to the immaturity of neonatal immune cells; however, the degree of hyporesponsiveness is highly variable and depends on the stimulation conditions. These discordant responses illustrate the need for a more unified explanation for why immunity is compromised in neonates. Here we show that physiologically enriched CD71(+) erythroid cells in neonatal mice and human cord blood have distinctive immunosuppressive properties. The production of innate immune protective cytokines by adult cells is diminished after transfer to neonatal mice or after co-culture with neonatal splenocytes. Neonatal CD71(+) cells express the enzyme arginase-2, and arginase activity is essential for the immunosuppressive properties of these cells because molecular inhibition of this enzyme or supplementation with L-arginine overrides immunosuppression. In addition, the ablation of CD71(+) cells in neonatal mice, or the decline in number of these cells as postnatal development progresses parallels the loss of suppression, and restored resistance to the perinatal pathogens Listeria monocytogenes and Escherichia coli. However, CD71(+) cell-mediated susceptibility to infection is counterbalanced by CD71(+) cell-mediated protection against aberrant immune cell activation in the intestine, where colonization with commensal microorganisms occurs swiftly after parturition. Conversely, circumventing such colonization by using antimicrobials or gnotobiotic germ-free mice overrides these protective benefits. Thus, CD71(+) cells quench the excessive inflammation induced by abrupt colonization with commensal microorganisms after parturition. This finding challenges the idea that the susceptibility of neonates to infection reflects immune-cell-intrinsic defects and instead highlights processes that are developmentally more essential and inadvertently mitigate innate immune protection. We anticipate that these results will spark renewed investigation into the need for immunosuppression in neonates, as well as improved strategies for augmenting host defence in this vulnerable population.
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Affiliation(s)
- Shokrollah Elahi
- Division of Infectious Diseases and Perinatal Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, Ohio 45229, USA
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19
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Qualls JE, Subramanian C, Rafi W, Smith AM, Balouzian L, DeFreitas AA, Shirey KA, Reutterer B, Kernbauer E, Stockinger S, Decker T, Miyairi I, Vogel SN, Salgame P, Rock CO, Murray PJ. Sustained generation of nitric oxide and control of mycobacterial infection requires argininosuccinate synthase 1. Cell Host Microbe 2013; 12:313-23. [PMID: 22980328 DOI: 10.1016/j.chom.2012.07.012] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 06/07/2012] [Accepted: 07/13/2012] [Indexed: 12/17/2022]
Abstract
Nitric oxide (NO) defends against intracellular pathogens, but its synthesis must be regulated due to cell and tissue toxicity. During infection, macrophages import extracellular arginine to synthesize NO, generating the byproduct citrulline. Accumulated intracellular citrulline is thought to fuel arginine synthesis catalyzed by argininosuccinate synthase (Ass1) and argininosuccinate lyase (Asl), which would lead to abundant NO production. Instead, we find that citrulline is exported from macrophages during early stages of NO production with <2% retained for recycling via the Ass1-Asl pathway. Later, extracellular arginine is depleted, and Ass1 expression allows macrophages to synthesize arginine from imported citrulline to sustain NO output. Ass1-deficient macrophages fail to salvage citrulline in arginine-scarce conditions, leading to their inability to control mycobacteria infection. Thus, extracellular arginine fuels rapid NO production in activated macrophages, and citrulline recycling via Ass1 and Asl is a fail-safe system that sustains optimum NO production.
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Affiliation(s)
- Joseph E Qualls
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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20
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Smith AM, Qualls JE, O'Brien K, Balouzian L, Johnson PF, Schultz-Cherry S, Smale ST, Murray PJ. A distal enhancer in Il12b is the target of transcriptional repression by the STAT3 pathway and requires the basic leucine zipper (B-ZIP) protein NFIL3. J Biol Chem 2011; 286:23582-90. [PMID: 21566115 DOI: 10.1074/jbc.m111.249235] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Deregulated IL-12 and IL-23 production from activated myeloid lineage cells is a key driver of numerous T cell-dependent autoimmune and inflammatory diseases. IL-12 and IL-23 share a common p40 subunit encoded by Il12b, which is negatively regulated at the transcriptional level by the STAT3 (signal transducer and activator of transcription 3)-activating anti-inflammatory cytokine IL-10. We found that IL-10 targets an enhancer 10 kb upstream of the Il12b transcriptional start site. Within the enhancer, a single 10-bp site is required for the inhibitory effects of IL-10 and is bound by NFIL3 (nuclear factor, interleukin 3-regulated), a B-ZIP transcription factor. Myeloid cells lacking NFIL3 produce excessive IL-12p40 and increased IL-12p70. Thus, the STAT3-dependent expression of NFIL3 is a key component of a negative feedback pathway in myeloid cells that suppresses proinflammatory responses.
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Affiliation(s)
- Amber M Smith
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
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21
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Qualls JE, Neale G, Smith AM, Koo MS, DeFreitas AA, Zhang H, Kaplan G, Watowich SS, Murray PJ. Arginine usage in mycobacteria-infected macrophages depends on autocrine-paracrine cytokine signaling. Sci Signal 2010; 3:ra62. [PMID: 20716764 DOI: 10.1126/scisignal.2000955] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nitric oxide (NO) produced by macrophages is toxic to host tissues and invading pathogens, and its regulation is essential to suppress host cytotoxicity. Macrophage arginase 1 (Arg1) competes with NO synthases for arginine, a substrate common to both types of enzymes, to inhibit NO production. Two signal transduction pathways control the production of Arg1 in macrophages: One pathway dependent on the Toll-like receptor adaptor protein myeloid differentiation marker 88 (MyD88) induces the expression of Arg1 during intracellular infections, whereas another pathway, which depends on signal transducer and activator of transcription 6 (STAT6), is required for Arg1 expression in alternatively activated macrophages. We found that mycobacteria-infected macrophages produced soluble factors, including interleukin-6 (IL-6), IL-10, and granulocyte colony-stimulating factor (G-CSF), that induced expression of Arg1 in an autocrine-paracrine manner. Arg1 expression was controlled by the MyD88-dependent production of these cytokines rather than by cell-intrinsic MyD88 signaling to Arg1. Our study revealed that the MyD88-dependent pathway that induced the expression of Arg1 after infection by mycobacteria required STAT3 activation and that this pathway may cause the development of an immunosuppressive niche in granulomas because of the induced production of Arg1 in surrounding uninfected macrophages.
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Affiliation(s)
- Joseph E Qualls
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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22
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23
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Abstract
IL-10 is a potent anti-inflammatory cytokine that is crucial for down-regulating pro-inflammatory genes, which are induced by Toll-like receptor (TLR) signaling. In this study, we have examined whether modulation of microRNAs plays a role in the inhibitory effect of IL-10 on TLR4 signaling. Analyzing microRNAs known to be induced by TLR4, we found that IL-10 could inhibit the expression of miR-155 in response to lipopolysaccharide but had no effect on miR-21 or miR-146a. IL-10 inhibited miR-155 transcription from the BIC gene in a STAT3-dependent manner. This inhibitory effect of IL-10 on miR-155 led to an increase in the expression of the miR-155 target, SHIP1. This is the first example of IL-10 playing a role in microRNA function and suggests that through its inhibitory effect on miR-155, IL-10 has the ability to promote anti-inflammatory gene expression.
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Affiliation(s)
- Claire E McCoy
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland.
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Qualls JE, DeFreitas A, Smith AM, Watowich SS, Murray PJ. Direct and indirect type-1 arginase (Arg1) induction following Mycobacterium bovis (BCG) infection (43.1). The Journal of Immunology 2009. [DOI: 10.4049/jimmunol.182.supp.43.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
M. tuberculosis infects lung macrophages (MØs) and evades immune responses by a diverse array of mechanisms. We have recently published that BCG infection triggers a MyD88-dependent Arg1 induction that suppresses NO production from infected MØs. In addition, MØ-specific Arg1 conditional knockout mice were more efficient at clearing M. tuberculosis and BCG. In the present study, we have found that while MyD88 is essential for Arg1 induction following infection, MyD88-/- MØs express robust Arg1 mRNA and protein when stimulated with supernatant from BCG-infected WT MØs. Arg1 induction stimulated with BCG supernatant correlated with enhanced activation of Stat3, but not Stat1, 4, 5, or 6. Two Stat3 activators, IL-6 and IL-10, were present in the supernatants of BCG infected WT MØs. We found the combined treatment of MØs with IL-6 and IL-10 synergistically induces Arg1 in the presence or absence of BCG infection. Consequently, we propose a model by which Arg1 is induced directly by BCG infection via MyD88 signaling, and indirectly through the autocrine/paracrine IL-6/IL-10 activation of Stat3. These data suggest that mycobacteria can condition uninfected neighboring cells to suppress NO production.
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Affiliation(s)
- Joseph E. Qualls
- 1Department of Infectious Diseases
- 2Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | - Ashley DeFreitas
- 1Department of Infectious Diseases
- 2Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | - Amber M. Smith
- 1Department of Infectious Diseases
- 2Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | - Stephanie S. Watowich
- 3Department of Immunology and Center for Cancer Immunology Research, University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Peter J. Murray
- 1Department of Infectious Diseases
- 2Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
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25
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Abstract
BACKGROUND The innate immune system serves a critical role in homeostasis of the gastrointestinal (GI) tract. Both macrophages (MØs) and dendritic cells (DCs) have been shown to have pathogenic roles in animal models of inflammatory bowel disease. However, studies by several labs have established that resident MØs and DCs within the normal GI tract maintain an immunosuppressive phenotype compared to that seen in other peripheral sites. Recent studies by our lab demonstrated that the depletion of both MØs and DCs before the initiation of dextran sodium sulfate (DSS)-induced colitis resulted in exacerbation of disease, partly caused by increased neutrophil influx. METHODS/RESULTS In this current report, DSS-induced colitis was shown to be significantly more severe when DCs were selectively depleted in mice as indicated by changes in weight loss, stool consistency, rectal bleeding, and histopathology. In contrast to enhanced colitis in MØ/DC-depleted mice, which was associated with increased neutrophil influx, increased colitis in DC-depleted mice was not associated with an increase in neutrophils in the colon, as shown by CXCL1 chemokine levels and myeloperoxidase (MPO) activity. However, increased IL-6 gene and protein expression in colon tissues correlated positively with increased colitis severity in DC-depleted mice compared to colitis in DC-intact mice. CONCLUSIONS This study demonstrates that resident DCs can suppress the severity of acute DSS colitis and that regulation of IL-6 production may contribute to DC-mediated control of intestinal inflammation.
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Affiliation(s)
- Joseph E Qualls
- Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, College of Medicine, Lexington, Kentucky 40536-0084, USA
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Moreira LO, Smith AM, DeFreitas AA, Qualls JE, El Kasmi KC, Murray PJ. Modulation of adaptive immunity by different adjuvant-antigen combinations in mice lacking Nod2. Vaccine 2008; 26:5808-13. [PMID: 18789992 DOI: 10.1016/j.vaccine.2008.08.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 08/12/2008] [Accepted: 08/19/2008] [Indexed: 12/19/2022]
Abstract
The mechanisms underlying adjuvant effects are under renewed scrutiny because of the enormous implications for vaccine development. Additionally, new low-toxicity adjuvants are sought to enhance vaccine formulations. Muramyl dipeptide (MDP) is a component of the peptidoglycan polymer and was shown to be an active but low-toxicity component of complete Freund's adjuvant, a powerful adjuvant composed of mycobacteria lysates in an oil emulsion. MDP activates cells primarily via the cytosolic NLR family member Nod2 and is therefore linked to the ability of adjuvants to enhance antibody production. Accordingly, we tested the adjuvant properties of the MDP-Nod2 pathway. We found that MDP, compared to the TLR agonist lipopolysaccharide, has minimal adjuvant properties for antibody production under a variety of immunization conditions. We also observed that the oil emulsion incomplete Freund's adjuvant (IFA) supplanted the requirements for the TLR pathway independent of the antigen. Surprisingly, we observed that Nod2 was required for an optimal IgG1 and IgG2c response in the absence of exogenous TLR or NLR agonists. Collectively, our results argue that oil emulsions deserve greater attention for their immunostimulatory properties.
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Affiliation(s)
- Lilian O Moreira
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
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Dasu T, Qualls JE, Tuna H, Raman C, Cohen DA, Bondada S. CD5 plays an inhibitory role in the suppressive function of murine CD4(+) CD25(+) T(reg) cells. Immunol Lett 2008; 119:103-13. [PMID: 18573278 PMCID: PMC2604124 DOI: 10.1016/j.imlet.2008.05.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [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: 11/21/2007] [Revised: 04/26/2008] [Accepted: 05/22/2008] [Indexed: 12/11/2022]
Abstract
A subset of CD4(+) T cells, the CD4(+) CD25(+) regulatory T (T(reg)) cells in the lymphoid organs and peripheral blood are known to possess suppressive function. Previous in vitro and in vivo studies have indicated that T cell receptor (TCR) signal is required for development of such 'natural regulatory (T(reg)) cells' and for activation of the effector function of CD4(+) CD25(+) regulatory T cells. CD5 is a cell surface molecule present on all T cells and a subtype of B lymphocytes, the B-1 cells, primarily localized to coelomic cavities, Peyer's patches, tonsils and spleen. CD5 acts as a negative regulator of T cell and B cell signaling via recruitment of SHP-1. Here, we demonstrate that T(reg) cells obtained from CD5(-/-) mice are more potent than those from wild type mice in suppressing the in vitro cell proliferation of anti-CD3 stimulated CD4(+) CD25(-) responder T cells. This phenomenon was cell contact and GITR dependent. Lack of CD5 expression on T(reg) cells (from spleen, lymph node and thymus) did not affect the intracellular levels of Foxp3. However, CD5(-/-) T(reg) thymocytes were able to elicit a higher Ca(2+) response to TCR + co-stimulatory signals than the wild type cells. CD5(-/-) mice expressed more Foxp3 mRNA in the colon than wild type mice, and additionally, the severity of the dextran sulfate sodium (DSS)-induced colitis in CD5(-/-) mice was less than the wild type strain. We suggest that manipulation of CD5 expression or the downstream signaling components of CD4(+) CD25(+) T(reg) cells as a potential strategy for therapeutic intervention in cases of auto-immune disorders.
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Affiliation(s)
- Trivikram Dasu
- Department of Microbiology, Immunology & Molecular Genetics
| | | | - Halide Tuna
- Department of Microbiology, Immunology & Molecular Genetics
| | - Chander Raman
- Department of Medicine, University of Alabama at Birmingham, AL
| | - Donald A Cohen
- Department of Microbiology, Immunology & Molecular Genetics
| | - Subbarao Bondada
- Department of Microbiology, Immunology & Molecular Genetics
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40536-0230
- Markey Cancer Research Center
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Abstract
The contribution of innate immunity to inflammatory bowel disease (IBD) remains an area of intense interest. Macrophages (MØ) and dendritic cells (DC) are considered important factors in regulating the onset of IBD. The goal of this study was to determine if intestinal mononuclear phagocytes (iMNP) serve a pathological or protective role in dextran sulfate sodium (DSS)-induced colitis in mice. Using a conditional MØ/DC depletion transgenic mouse line--MØ Fas-induced apoptosis--to systemically deplete iMNP, DSS colitis histopathology was shown to be more severe in MØ/DC-depleted compared with MØ/DC-intact mice. Similarly, localized iMNP depletion by clodronate-encapsulated liposomes into C57BL/6, BALB/c, and CB.17/SCID mice also increased DSS colitis severity, as indicated by increased histopathology, weight loss, rectal bleeding, decreased stool consistency, and colon length compared with MØ/DC-intact, DSS-treated mice. Histology revealed that iMNP depletion during DSS treatment led to increased neutrophilic inflammation, increased epithelial injury, and enhanced mucin depletion from Goblet cells. iMNP depletion did not further elevate DSS-induced expression of TNF-alpha and IFN-gamma mRNA but significantly increased expression of CXCL1 chemokine mRNA. Myeloperoxidase activity was increased in colons of MØ/DC-depleted, DSS-treated mice, compared with DSS alone, coincident with increased neutrophil infiltration in diseased colons. Neutrophil depletion combined with MØ/DC depletion prevented the increase in DSS colitis severity compared with MØ/DC depletion alone. This study demonstrates that iMNP can serve a protective role during development of acute colitis and that protection is associated with MØ/DC-mediated down-regulation of neutrophil infiltration.
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Affiliation(s)
- Joseph E Qualls
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, College of Medicine, Lexington, KY 40536-0084, USA
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29
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Abstract
Despite the clear importance of the left-handed polyproline II (PPII) helical conformation in many physiologically important processes as well as its potential significance in protein unfolded states, little is known about the physical determinants of this conformation. We present here a scale of relative PPII helix-forming propensities measured for all residues, except tyrosine and tryptophan, in a proline-based host peptide system. Proline has the highest measured propensity in this system, a result of strong steric interactions that occur between adjacent prolyl rings. The other measured propensities are consistent with backbone solvation being an important component in PPII helix formation. Side chain to backbone hydrogen bonding may also play a role in stabilizing this conformation. The PPII helix-forming propensity scale will prove useful in future studies of the conformational properties of proline-rich sequences as well as provide insights into the prevalence of PPII helices in protein unfolded states.
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Affiliation(s)
- Adam L Rucker
- Center for Structural Biology, Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky 40536-0298, USA
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