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Son A, Meylan F, Gomez-Rodriguez J, Kaul Z, Sylvester M, Falduto GH, Vazquez E, Haque T, Kitakule MM, Wang C, Manthiram K, Qi CF, Cheng J, Gurram RK, Zhu J, Schwartzberg P, Milner JD, Frischmeyer-Guerrerio PA, Schwartz DM. Publisher Correction: Dynamic chromatin accessibility licenses STAT5- and STAT6-dependent innate-like function of T H9 cells to promote allergic inflammation. Nat Immunol 2023; 24:2164. [PMID: 37821709 DOI: 10.1038/s41590-023-01674-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Affiliation(s)
- Aran Son
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Francoise Meylan
- Office of Science and Technology, National Institute of Arthritis, Musculoskeletal, and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Julio Gomez-Rodriguez
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
- TCR Therapeutics, Cambridge, MA, USA
| | - Zenia Kaul
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - McKella Sylvester
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Guido H Falduto
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Estefania Vazquez
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Tamara Haque
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Moses M Kitakule
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
- Division of Pediatric Allergy Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Chujun Wang
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kalpana Manthiram
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Chen-Feng Qi
- Pathology Core, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jun Cheng
- Embryonic Stem Cell and Transgenic Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Rama K Gurram
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jinfang Zhu
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Pamela Schwartzberg
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Joshua D Milner
- Division of Pediatric Allergy Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Pamela A Frischmeyer-Guerrerio
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Daniella M Schwartz
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA.
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Tumas KC, Xu F, Wu J, Hernandez M, Pattaradilokrat S, Xia L, Peng YC, Lavali AM, He X, Singh BK, Zhang C, Percopo C, Qi CF, Huang S, Long CA, Su XZ. Dysfunction of CD169 + macrophages and blockage of erythrocyte maturation as a mechanism of anemia in Plasmodium yoelii infection. Proc Natl Acad Sci U S A 2023; 120:e2311557120. [PMID: 37748059 PMCID: PMC10556621 DOI: 10.1073/pnas.2311557120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 08/22/2023] [Indexed: 09/27/2023] Open
Abstract
Plasmodium parasites cause malaria with disease outcomes ranging from mild illness to deadly complications such as severe malarial anemia (SMA), pulmonary edema, acute renal failure, and cerebral malaria. In young children, SMA often requires blood transfusion and is a major cause of hospitalization. Malaria parasite infection leads to the destruction of infected and noninfected erythrocytes as well as dyserythropoiesis; however, the mechanism of dyserythropoiesis accompanied by splenomegaly is not completely understood. Using Plasmodium yoelii yoelii 17XNL as a model, we show that both a defect in erythroblastic island (EBI) macrophages in supporting red blood cell (RBC) maturation and the destruction of reticulocytes/RBCs by the parasites contribute to SMA and splenomegaly. After malaria parasite infection, the destruction of both infected and noninfected RBCs stimulates extramedullary erythropoiesis in mice. The continuous decline of RBCs stimulates active erythropoiesis and drives the expansion of EBIs in the spleen, contributing to splenomegaly. Phagocytosis of malaria parasites by macrophages in the bone marrow and spleen may alter their functional properties and abilities to support erythropoiesis, including reduced expression of the adherence molecule CD169 and inability to support erythroblast differentiation, particularly RBC maturation in vitro and in vivo. Therefore, macrophage dysfunction is a key mechanism contributing to SMA. Mitigating and/or alleviating the inhibition of RBC maturation may provide a treatment strategy for SMA.
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Affiliation(s)
- Keyla C. Tumas
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Fangzheng Xu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Jian Wu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Maricarmen Hernandez
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Sittiporn Pattaradilokrat
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok10330, Thailand
| | - Lu Xia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan410033, China
| | - Yu-chih Peng
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Angela Musu Lavali
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Xiao He
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Brajesh K. Singh
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Cui Zhang
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Caroline Percopo
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Chen-Feng Qi
- Pathology Core, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD20852
| | - Suming Huang
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, Penn State Cancer Institute, Hershey, PA17033
- Department of Pharmacology, Division of Pediatric Hematology and Oncology, Penn State Cancer Institute, Hershey, PA17033
| | - Carole A. Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
| | - Xin-zhuan Su
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD20852
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Wang H, Sun W, Traba J, Wu J, Qi CF, Amo L, Kole HK, Scott B, Singh K, Sack MN, Bolland S. MAVS Positively Regulates Mitochondrial Integrity and Metabolic Fitness in B Cells. Immunohorizons 2023; 7:587-599. [PMID: 37610299 PMCID: PMC10587501 DOI: 10.4049/immunohorizons.2300038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/19/2023] [Indexed: 08/24/2023] Open
Abstract
Activated B cells experience metabolic changes that require mitochondrial remodeling, in a process incompletely defined. In this study, we report that mitochondrial antiviral signaling protein (MAVS) is involved in BCR-initiated cellular proliferation and prolonged survival. MAVS is well known as a mitochondrial-tethered signaling adaptor with a central role in viral RNA-sensing pathways that induce type I IFN. The role of MAVS downstream of BCR stimulation was recognized in absence of IFN, indicative of a path for MAVS activation that is independent of viral infection. Mitochondria of BCR-activated MAVS-deficient mouse B cells exhibited a damaged phenotype including disrupted mitochondrial morphology, excess mitophagy, and the temporal progressive blunting of mitochondrial oxidative capacity with mitochondrial hyperpolarization and cell death. Costimulation of MAVS-deficient B cells with anti-CD40, in addition to BCR stimulation, partially corrected the mitochondrial structural defects and functionality. Our data reveal a (to our knowledge) previously unrecognized role of MAVS in controlling the metabolic fitness of B cells, most noticeable in the absence of costimulatory help.
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Affiliation(s)
- Hongsheng Wang
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Wenxiang Sun
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Javier Traba
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan Wu
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
- Department of Nephrology, The People’s Hospital of Zhejiang Province, Hangzhou, China
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Laura Amo
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Hemanta K. Kole
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Bethany Scott
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
| | - Komudi Singh
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Michael N. Sack
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Silvia Bolland
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD
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Amo L, Kole HK, Scott B, Qi CF, Krymskaya L, Wang H, Miller LH, Janse CJ, Bolland S. Plasmodium curtails autoimmune nephritis via lasting bone marrow alterations, independent of hemozoin accumulation. Front Immunol 2023; 14:1192819. [PMID: 37539049 PMCID: PMC10394379 DOI: 10.3389/fimmu.2023.1192819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023] Open
Abstract
The host response against infection with Plasmodium commonly raises self-reactivity as a side effect, and antibody deposition in kidney has been cited as a possible cause of kidney injury during severe malaria. In contrast, animal models show that infection with the parasite confers long-term protection from lethal lupus nephritis initiated by autoantibody deposition in kidney. We have limited knowledge of the factors that make parasite infection more likely to induce kidney damage in humans, or the mechanisms underlying protection from autoimmune nephritis in animal models. Our experiments with the autoimmune-prone FcγR2B[KO] mice have shown that a prior infection with P. yoelii 17XNL protects from end-stage nephritis for a year, even when overall autoreactivity and systemic inflammation are maintained at high levels. In this report we evaluate post-infection alterations, such as hemozoin accumulation and compensatory changes in immune cells, and their potential role in the kidney-specific protective effect by Plasmodium. We ruled out the role of pigment accumulation with the use of a hemozoin-restricted P. berghei ANKA parasite, which induced a self-resolved infection that protected from autoimmune nephritis with the same mechanism as parasitic infections that accumulated normal levels of hemozoin. In contrast, adoptive transfer experiments revealed that bone marrow cells were altered by the infection and could transmit the kidney protective effect to a new host. While changes in the frequency of bone marrow cell populations after infection were variable and unique to a particular parasite strain, we detected a sustained bias in cytokine/chemokine expression that suggested lower fibrotic potential and higher Th1 bias likely affecting multiple cell populations. Sustained changes in bone marrow cell activation profile could have repercussions in immune responses long after the infection was cleared.
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Affiliation(s)
- Laura Amo
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Hemanta K. Kole
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Bethany Scott
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Ludmila Krymskaya
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Hongsheng Wang
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Louis H. Miller
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Chris J. Janse
- Leiden Malaria Research Group, Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Silvia Bolland
- Laboratory of Immunogenetics, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
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5
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Son A, Meylan F, Gomez-Rodriguez J, Kaul Z, Sylvester M, Falduto GH, Vazquez E, Haque T, Kitakule MM, Wang C, Manthiram K, Qi CF, Cheng J, Gurram RK, Zhu J, Schwartzberg P, Milner JD, Frischmeyer-Guerrerio PA, Schwartz DM. Dynamic chromatin accessibility licenses STAT5- and STAT6-dependent innate-like function of T H9 cells to promote allergic inflammation. Nat Immunol 2023; 24:1036-1048. [PMID: 37106040 PMCID: PMC10247433 DOI: 10.1038/s41590-023-01501-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 03/27/2023] [Indexed: 04/29/2023]
Abstract
Allergic diseases are a major global health issue. Interleukin (IL)-9-producing helper T (TH9) cells promote allergic inflammation, yet TH9 cell effector functions are incompletely understood because their lineage instability makes them challenging to study. Here we found that resting TH9 cells produced IL-9 independently of T cell receptor (TCR) restimulation, due to STAT5- and STAT6-dependent bystander activation. This mechanism was seen in circulating cells from allergic patients and was restricted to recently activated cells. STAT5-dependent Il9/IL9 regulatory elements underwent remodeling over time, inactivating the locus. A broader 'allergic TH9' transcriptomic and epigenomic program was also unstable. In vivo, TH9 cells induced airway inflammation via TCR-independent, STAT-dependent mechanisms. In allergic patients, TH9 cell expansion was associated with responsiveness to JAK inhibitors. These findings suggest that TH9 cell instability is a negative checkpoint on bystander activation that breaks down in allergy and that JAK inhibitors should be considered for allergic patients with TH9 cell expansion.
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Affiliation(s)
- Aran Son
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Francoise Meylan
- Office of Science and Technology, National Institute of Arthritis, Musculoskeletal, and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Julio Gomez-Rodriguez
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
- TCR Therapeutics, Cambridge, MA, USA
| | - Zenia Kaul
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - McKella Sylvester
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Guido H Falduto
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Estefania Vazquez
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Tamara Haque
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Moses M Kitakule
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
- Division of Pediatric Allergy Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Chujun Wang
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kalpana Manthiram
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Chen-Feng Qi
- Pathology Core, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jun Cheng
- Embryonic Stem Cell and Transgenic Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Rama K Gurram
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jinfang Zhu
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Pamela Schwartzberg
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Joshua D Milner
- Division of Pediatric Allergy Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Pamela A Frischmeyer-Guerrerio
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Daniella M Schwartz
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA.
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Cimperman CK, Pena M, Gokcek SM, Theall BP, Patel MV, Sharma A, Qi C, Sturdevant D, Miller LH, Collins PL, Pierce SK, Akkaya M. Cerebral Malaria Is Regulated by Host-Mediated Changes in Plasmodium Gene Expression. mBio 2023; 14:e0339122. [PMID: 36852995 PMCID: PMC10127683 DOI: 10.1128/mbio.03391-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 03/01/2023] Open
Abstract
Cerebral malaria (CM), the deadliest complication of Plasmodium infection, is a complex and unpredictable disease. However, our understanding of the host and parasite factors that cause CM is limited. Using a mouse model of CM, experimental CM (ECM), we performed a three-way comparison between ECM-susceptible C57BL/6 mice infected with ECM-causing Plasmodium ANKA parasites [ANKA(C57BL/6)], ECM-resistant BALB/c mice infected with Plasmodium ANKA [ANKA(BALB/c)], and C57BL/6 mice infected with Plasmodium NK65 that does not cause ECM [NK65(C57BL/6)]. All ANKA(C57BL/6) mice developed CM. In contrast, in ANKA(BALB/c) and NK65(C57BL/6), infections do not result in CM and proceed similarly in terms of parasite growth, disease course, and host immune response. However, parasite gene expression in ANKA(BALB/c) was remarkably different than that in ANKA(C57BL/6) but similar to the gene expression in NK65(C57BL/6). Thus, Plasmodium ANKA has an ECM-specific gene expression profile that is activated only in susceptible hosts, providing evidence that the host has a critical influence on the outcome of infection. IMPORTANCE Hundreds of thousands of lives are lost each year due to the brain damage caused by malaria disease. The overwhelming majority of these deaths occur in young children living in sub-Saharan Africa. Thus far, there are no vaccines against this deadly disease, and we still do not know why fatal brain damage occurs in some children while others have milder, self-limiting disease progression. Our research provides an important clue to this problem. Here, we showed that the genetic background of the host has an important role in determining the course and the outcome of the disease. Our research also identified parasite molecules that can potentially be targeted in vaccination and therapy approaches.
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Affiliation(s)
- Clare K. Cimperman
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Mirna Pena
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Sohret M. Gokcek
- Division of Rheumatology and Immunology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, Ohio, USA
- Pelotonia Institute for Immuno-Oncology, The James Comprehensive Cancer Center, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Brandon P. Theall
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Meha V. Patel
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Anisha Sharma
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - ChenFeng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Daniel Sturdevant
- Research Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, Montana, USA
| | - Louis H. Miller
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Patrick L. Collins
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, Ohio, USA
- Pelotonia Institute for Immuno-Oncology, The James Comprehensive Cancer Center, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Susan K. Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland, USA
| | - Munir Akkaya
- Division of Rheumatology and Immunology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, Ohio, USA
- Pelotonia Institute for Immuno-Oncology, The James Comprehensive Cancer Center, College of Medicine, The Ohio State University, Columbus, Ohio, USA
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Amo L, Kole HK, Scott B, Qi CF, Wu J, Bolland S. CCL17-producing cDC2s are essential in end-stage lupus nephritis and averted by a parasitic infection. J Clin Invest 2021; 131:148000. [PMID: 34060489 PMCID: PMC8159687 DOI: 10.1172/jci148000] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023] Open
Abstract
Lupus nephritis is a severe organ manifestation in systemic lupus erythematosus leading to kidney failure in a subset of patients. In lupus-prone mice, controlled infection with Plasmodium parasites protects against the progression of autoimmune pathology including lethal glomerulonephritis. Here, we demonstrate that parasite-induced protection was not due to a systemic effect of infection on autoimmunity as previously assumed, but rather to specific alterations in immune cell infiltrates into kidneys and renal draining lymph nodes. Infection of lupus-prone mice with a Plasmodium parasite did not reduce the levels or specificities of autoreactive antibodies, vasculitis, immune complex-induced innate activation, or hypoxia. Instead, infection uniquely reduced kidney-infiltrating CCL17-producing bone marrow-derived type 2 inflammatory dendritic cells (iDC2s). Bone marrow reconstitution experiments revealed that infection with Plasmodium caused alterations in bone marrow cells that hindered the ability of DC2s to infiltrate the kidneys. The essential role for CCL17 in lupus nephritis was confirmed by in vivo depletion with a blocking antibody, which reduced kidney pathology and immune infiltrates, while bypassing the need for parasitic infection. Therefore, infiltration into the kidneys of iDC2s, with the potential to prime local adaptive responses, is an essential regulated event in the transition from manageable glomerulonephritis to lethal tubular injury.
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Bolland S, Kole H, Scott B, Qi CF, Crompton P, Wu J, Amo L. Malaria infection protects from lupus nephritis at a stage beyond immune complex-induced glomerular inflammation. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.21.08] [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
A protective role of malaria infection in SLE was proposed to explain the relatively low prevalence of SLE in West Africa compared to populations of similar genetic background living in the West. Various reports showed an increase of autoantibodies in plasma of West African populations, suggesting that parasite infections were inducing systemic autoreactivity while protecting from tissue pathology. Our own studies from a large longitudinal study in a malaria endemic region confirm the high penetrance of elevated titers of anti-nuclear antibodies in plasma of Plasmodium PCR-positive individuals. In mouse models of malaria, murine Plasmodium infection increases systemic autoreactivity but does not trigger any type of immune-complex induced inflammatory disease. To further investigate the mechanism of kidney protection by Plasmodium, we set up experiments using a malaria parasite in the well characterized SLE mouse model FcγRIIb[KO]. This model system allowed for evaluation of the effect of malaria on autoantibodies, systemic vasculitis and kidney specific pathology, while also assessing the role of parasite-mediated bone marrow alterations, or parasite-produced hemozoin. We found that infection with Plasmodium protects SLE by modifying bone marrow cells and impairing leukocyte infiltration in the kidney, without altering systemic autoimmunity, vasculitis, all independent of the expression of hemozoin. Our results point to a protection of late-stage kidney disease by malaria that targets a step beyond immune complex deposition, hypoxia or innate responses and release of cytokines (IFN, TNF, IL1).
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Akkaya M, Bansal A, Sheehan PW, Pena M, Molina-Cruz A, Orchard LM, Cimperman CK, Qi CF, Ross P, Yazew T, Sturdevant D, Anzick SL, Thiruvengadam G, Otto TD, Billker O, Llinás M, Miller LH, Pierce SK. A single-nucleotide polymorphism in a Plasmodium berghei ApiAP2 transcription factor alters the development of host immunity. Sci Adv 2020; 6:eaaw6957. [PMID: 32076635 PMCID: PMC7002124 DOI: 10.1126/sciadv.aaw6957] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 11/21/2019] [Indexed: 05/07/2023]
Abstract
The acquisition of malaria immunity is both remarkably slow and unpredictable. At present, we know little about the malaria parasite genes that influence the host's ability to mount a protective immune response. Here, we show that a single-nucleotide polymorphism (SNP) resulting in a single amino acid change (S to F) in an ApiAP2 transcription factor in the rodent malaria parasite Plasmodium berghei (Pb) NK65 allowed infected mice to mount a T helper cell 1 (TH1)-type immune response that controlled subsequent infections. As compared to PbNK65S, PbNK65F parasites differentially expressed 46 genes, most of which are predicted to play roles in immune evasion. PbNK65F infections resulted in an early interferon-γ response and a later expansion of germinal centers, resulting in high levels of infected red blood cell-specific TH1-type immunoglobulin G2b (IgG2b) and IgG2c antibodies. Thus, the Pb ApiAP2 transcription factor functions as a critical parasite virulence factor in malaria infections.
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Affiliation(s)
- Munir Akkaya
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
- Corresponding author. (S.K.P.); (M.A.)
| | - Abhisheka Bansal
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Patrick W. Sheehan
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Mirna Pena
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Alvaro Molina-Cruz
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Lindsey M. Orchard
- Department of Biochemistry and Molecular Biology and Huck Center for Malaria Research, The Pennsylvania State University, University Park, PA, USA
| | - Clare K. Cimperman
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Philipp Ross
- Department of Biochemistry and Molecular Biology and Huck Center for Malaria Research, The Pennsylvania State University, University Park, PA, USA
| | - Takele Yazew
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Daniel Sturdevant
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Sarah L. Anzick
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Girija Thiruvengadam
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Thomas Dan Otto
- Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
| | - Oliver Billker
- Department of Molecular Biology, Umeå University, S-90187 Umeå, Sweden
- Laboratory for Molecular Infection Medicine Sweden, Umeå University, S-90187 Umeå, Sweden
| | - Manuel Llinás
- Department of Biochemistry and Molecular Biology and Huck Center for Malaria Research, The Pennsylvania State University, University Park, PA, USA
- Department of Chemistry, Pennsylvania State University, University Park, PA, USA
| | - Louis H. Miller
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Susan K. Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
- Corresponding author. (S.K.P.); (M.A.)
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10
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Green DS, Johnson CL, Qi CF, Tosh KW, Kamenyeva O, Zoon KC, Annunziata CM. Abstract TMIM-073: THE COMBINATION OF INTERFERONS ALPHA AND GAMMA AND MONOCYTES INDUCES OVARIAN CANCER CELL DEATH AND PROVIDE A RATIONALE FOR A NOVEL, ONGOING, IMMUNOTHERAPY PHASE 1 CLINICAL TRIAL. Clin Cancer Res 2019. [DOI: 10.1158/1557-3265.ovcasymp18-tmim-073] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Standard of care for the treatment of ovarian cancer is surgical tumor debulking, followed by administration of a platinum based compound in combination with a taxane compound. While there is an initial good response to the therapy, especially in optimally debulked tumors, the disease is characterized by a high rate of relapse. There is no definitive second line treatment for patients. Ovarian cancer is largely retained in the peritoneal cavity, with metastases outside of the peritoneum occurring late in the course of the disease. The restriction of the bulk of the tumor burden to the peritoneal cavity makes intraperitoneal (IP) treatment a reasonable approach for ovarian cancer. This strategy was first employed for ovarian cancer using immunotherapy with IP administration of Interferon Alpha. However, one of the hallmarks of ovarian cancer a highly immunosuppressive environment. This environment includes the metastases themselves and the fluid of the peritoneum which contains a mix of pro and anti-inflammatory cells, cytokines and lipids. Tipping the balance towards a pro-inflammatory environment is necessary for the effective treatment of disease.
Herein, we define the mechanisms by which IFNs and monocytes are potent killers of ovarian cancer cells. While patients with ovarian cancer have normal whole blood counts, the tumoricidal activity of their monocytes has never been measured. We demonstrate that ovarian cancer patient monocytes are more tumoricidal when cultured with IFNs than monocytes from sex and age matched controls. In this work, we expand on our previous observations of synergistic killing of ovarian cancer cell lines by monocytes and IFNs by showing that an important mechanism of cell death is mediated by TRAIL expressed on monocytes, and the target cells die in a Caspase-8 dependent mechanism. We also found that the tumoricidal effect of IFNs and monocytes was independent of IRF9 and STAT2 signaling, and was instead dependent on IRF-1 and STAT1 signaling. Together, these data support a new, innate immune based, approach to immunotherapy of ovarian cancer.
We are currently determining the safety of using autologous monocytes treated ex vivo with IFNs and infused into the peritoneal cavity of patients with advanced ovarian cancer in a phase 1 clinical trial (NCT02948426). While the data presented here and previously published works show that innate mediators of the immune system can kill ovarian cancer cells and decrease disease burden, a durable clinical response is dependent on a strong adaptive immune response. In the clinical trial we will identify whether the highly pro-inflammatory properties of the combination of the innate immune effectors monocytes and IFNs can stimulate an existing, but tumor suppressed, adaptive anti-tumor immune response. Here we present a mechanistic understanding of how IFNs and monocytes can kill ovarian cancer cells and provide mechanistic insights into innate immune based immune therapy for the treatment of ovarian cancer.
Citation Format: Daniel S. Green, Chase L. Johnson, Chen-Feng Qi, Kevin W. Tosh, Olena Kamenyeva, Kathryn C. Zoon, Christina M. Annunziata. THE COMBINATION OF INTERFERONS ALPHA AND GAMMA AND MONOCYTES INDUCES OVARIAN CANCER CELL DEATH AND PROVIDE A RATIONALE FOR A NOVEL, ONGOING, IMMUNOTHERAPY PHASE 1 CLINICAL TRIAL [abstract]. In: Proceedings of the 12th Biennial Ovarian Cancer Research Symposium; Sep 13-15, 2018; Seattle, WA. Philadelphia (PA): AACR; Clin Cancer Res 2019;25(22 Suppl):Abstract nr TMIM-073.
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Affiliation(s)
- Daniel S. Green
- 1Cytokine Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA,
- 2Translational Genomics Section, Women's Malignancy Branch, Center for Cancer Research, National Cancer Institute, Bethesda MD 20892, USA,
| | - Chase L. Johnson
- 1Cytokine Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA,
| | - Chen-Feng Qi
- 3Pathology Core Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA,
| | - Kevin W. Tosh
- 4Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA,
| | - Olena Kamenyeva
- 5Biological Imaging Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA
| | - Kathryn C. Zoon
- 1Cytokine Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda MD 20892, USA,
| | - Christina M. Annunziata
- 2Translational Genomics Section, Women's Malignancy Branch, Center for Cancer Research, National Cancer Institute, Bethesda MD 20892, USA,
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11
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Sun W, Wang H, Qi CF, Wu J, Scott B, Bolland S. Antiviral Adaptor MAVS Promotes Murine Lupus With a B Cell Autonomous Role. Front Immunol 2019; 10:2452. [PMID: 31681326 PMCID: PMC6805724 DOI: 10.3389/fimmu.2019.02452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 08/08/2019] [Accepted: 10/01/2019] [Indexed: 12/25/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disorder characterized by increased production of autoantibodies, which commonly target nuclear antigens, and concomitant deposition of immune complexes that cause inflammation in tissues. SLE is often associated with increased systemic expression of type I interferons, in some cases due to dysregulation in nucleic acid-sensing innate pathways. There is strong genetic evidence for a link between cytoplasmic RNA sensing pathways (RIG-I/MDA5) and SLE, both in human patients and murine models, however questions still remain regarding pathway initiation, cell types involved and downstream effects. Here we show that MAVS, an essential adaptor for RIG-I/MDA5 signaling, is necessary for all symptoms of autoimmune disease that develop spontaneously in the lupus model FcγRIIB−/− mice. This effect was independent of type I interferon signaling, TLR7 expression or STING, all three factors that have been connected to autoimmunity. Mixed bone marrow reconstitution experiments showed reduced occurrence in autoimmune germinal centers and diminished autoantibody production by MAVS-deficient B cells. Thus, MAVS plays a B cell intrinsic role in autoreactive B cell activation that is independent of its anti-viral functions and independent of elevated type I interferon expression.
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Affiliation(s)
- Wenxiang Sun
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Hongsheng Wang
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Juan Wu
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Bethany Scott
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Silvia Bolland
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
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12
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Hu Y, Xu F, Zhang R, Legarda D, Dai J, Wang D, Li H, Zhang Y, Xue Q, Dong G, Zhang H, Lu C, Mortha A, Liu J, Cravedi P, Ting A, Li L, Qi CF, Pierce S, Merad M, Heeger P, Xiong H. Interleukin-1β-induced IRAK1 ubiquitination is required for T H-GM-CSF cell differentiation in T cell-mediated inflammation. J Autoimmun 2019; 102:50-64. [PMID: 31080014 DOI: 10.1016/j.jaut.2019.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/12/2019] [Accepted: 04/12/2019] [Indexed: 12/29/2022]
Abstract
Accumulating evidence suggests granulocyte macrophage-colony stimulating factor (GM-CSF) can function as an inflammatory mediator, but whether GM-CSF-producing CD4+ T cells (TH-GM-CSF) are a distinct T helper cell subset is lacking. Herein we demonstrate that interleukin (IL)-1β exclusively drives differentiation of naïve CD4+ T cells into TH-GM-CSF cells via inducing ubiquitination of IL-1 receptor-associated kinase 1 (IRAK1) and subsequent activation of the transcription factor NF-kappaB (NF-κB), independent of RAR-related orphan receptor gamma (RORγt) required for TH17 differentiation. In vivo, TH-GM-CSF cells are present in murine Citrobacter Rodentium infections and mediate colitis following adoptive transfer of CD4+ T cells into Rag1-/- mice via GM-CSF-induced macrophage activation. The TH-GM-CSF cell phenotype is stable and distinct from the TH17 genetic program, but IL-1β can convert pre-formed TH17 cells into TH-GM-CSF cells, thereby accounting for previously reported associations between IL-17 and GM-CSF. Together, our results newly identify IL-1β/NF-κB-dependent TH-GM-CSF cells as a unique T helper cell subset and highlight the importance of CD4+ T cell-derived GM-CSF induced macrophage activation as a previously undescribed T cell effector mechanism.
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Affiliation(s)
- Yuan Hu
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China
| | - Feihong Xu
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Ruihua Zhang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Diana Legarda
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jun Dai
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China
| | - Di Wang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Heyu Li
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Qingjie Xue
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China
| | - Guanjun Dong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China
| | - Hui Zhang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China
| | - Chang Lu
- Department of Biomedical Engineering, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Arthur Mortha
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jianguo Liu
- Departments of Internal Medicine & Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, 63104, USA
| | - Paolo Cravedi
- Department of Medicine, Translational Transplant Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Adrian Ting
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Susan Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Miriam Merad
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Peter Heeger
- Department of Medicine, Translational Transplant Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Huabao Xiong
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, 272067, China.
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13
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Sugamata R, Donko A, Murakami Y, Boudreau HE, Qi CF, Kwon J, Leto TL. Duox1 Regulates Primary B Cell Function under the Influence of IL-4 through BCR-Mediated Generation of Hydrogen Peroxide. J Immunol 2018; 202:428-440. [PMID: 30559322 DOI: 10.4049/jimmunol.1601395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/09/2018] [Indexed: 12/24/2022]
Abstract
Engagement of the BCR with Ags triggers signaling pathways for commitment of B lymphocyte responses that can be regulated, in part, by reactive oxygen species. To investigate the functional relevance of reactive oxygen species produced in primary B cells, we focused on the role of the hydrogen peroxide generator Duox1 in stimulated splenic B cells under the influence of the TH2 cytokine IL-4. We found that H2O2 production in wild type (WT) and Nox2-deficient CD19+ B cells was boosted concomitantly with enhanced expression of Duox1 following costimulation with BCR agonists together with IL-4, whereas stimulated Duox1-/- cells showed attenuated H2O2 release. We examined whether Duox1-derived H2O2 contributes to proliferative activity and Ig isotype production in CD19+ cells upon BCR stimulation. Duox1-/- CD19+ B cells showed normal responses of Ig production but a higher rate of proliferation than WT or Nox2-deficient cells. Furthermore, we demonstrated that the H2O2 scavenger catalase mimics the effect of Duox1 deficiency by enhancing proliferation of WT CD19+ B cells in vitro. Results from immunized mice reflected the in vitro observations: T cell-independent Ag induced increased B cell expansion in germinal centers from Duox1-/- mice relative to WT and Nox2-/- mice, whereas immunization with T cell-dependent or -independent Ag elicited normal Ig isotype secretion in the Duox1 mutant mice. These observations, obtained both by in vitro and in vivo approaches, strongly suggest that Duox1-derived hydrogen peroxide negatively regulates proliferative activity but not Ig isotype production in primary splenic CD19+ B cells.
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Affiliation(s)
- Ryuichi Sugamata
- Molecular Defense Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20892; and
| | - Agnes Donko
- Molecular Defense Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20892; and
| | - Yousuke Murakami
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852; and
| | - Howard E Boudreau
- Molecular Defense Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20892; and
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852; and.,Pathology Core, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Jaeyul Kwon
- Molecular Defense Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20892; and
| | - Thomas L Leto
- Molecular Defense Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20892; and
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14
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Kovalchuk AL, Sakai T, Qi CF, Du Bois W, Dunnick WA, Cogné M, Morse HC. 3' Igh enhancers hs3b/hs4 are dispensable for Myc deregulation in mouse plasmacytomas with T(12;15) translocations. Oncotarget 2018; 9:34528-34542. [PMID: 30349647 PMCID: PMC6195379 DOI: 10.18632/oncotarget.26160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 07/27/2018] [Accepted: 09/06/2018] [Indexed: 01/18/2023] Open
Abstract
Myc-deregulating T(12;15) chromosomal translocations are the hallmark cytogenetic abnormalities of murine plasmacytomas (PCTs). In most PCTs, the immunoglobulin heavy chain (Igh) locus is broken between the Eμ enhancer and the 3’ regulatory region (3’RR), making the latter the major candidate for orchestrating Myc deregulation. To elucidate the role of the Igh3’RR in tumorigenesis, we induced PCTs in Bcl-xL-transgenic mice deficient for the major Igh3’RR enhancer elements, hs3b and hs4 (hs3b-4-/-). Contrary to previous observations using a mouse lymphoma model, which showed no tumors with peripheral B-cell phenotype in hs3b-4-/- mice, these animals developed T(12;15)-positive PCTs, although with a lower incidence than hs3b-4+/+ (wild-type, WT) controls. In heterozygous hs3b-4+/- mice there was no allelic bias in targeting Igh for T(12;15). Molecular analyses of Igh/Myc junctions revealed dominance of Sμ region breakpoints versus the prevalence of Sγ or Sα in WT controls. Myc expression and Ig secretion in hs3b-4-/- PCTs did not differ from WT controls. We also evaluated the effect of a complete Igh3’RR deletion on Myc expression in the context of an established Igh/Myc translocation in ARS/Igh11-transgenic PCT cell lines. Cre-mediated deletion of the Igh3’RR resulted in gradual reduction of Myc expression, loss of proliferative activity and increased cell death, confirming the necessity of the Igh3’RR for Myc deregulation by T(12;15).
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Affiliation(s)
- Alexander L Kovalchuk
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Tomomi Sakai
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Chen-Feng Qi
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Wendy Du Bois
- Animal Model and Genotyping Core Facility, Laboratory of Cancer Biology and Genetics, NCI, National Institute of Health, Bethesda, MD, USA
| | - Wesley A Dunnick
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Michel Cogné
- Laboratory of Immunology, CNRS UMR 7276, Université de Limoges, Limoges, France
| | - Herbert C Morse
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
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15
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Zhang R, Qi CF, Hu Y, Shan Y, Hsieh YP, Xu F, Lu G, Dai J, Gupta M, Cui M, Peng L, Yang J, Xue Q, Chen-Liang R, Chen K, Zhang Y, Fung-Leung WP, Mora JR, Li L, Morse HC, Ozato K, Heeger PS, Xiong H. T follicular helper cells restricted by IRF8 contribute to T cell-mediated inflammation. J Autoimmun 2018; 96:113-122. [PMID: 30241692 DOI: 10.1016/j.jaut.2018.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 05/24/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 12/14/2022]
Abstract
The follicular helper T cell (TFH) are established regulators of germinal center (GC) B cells, whether TFH have pathogenic potential independent of B cells is unknown. Based on in vitro TFH cell differentiation, in vivo T cell transfer animal colitis model, and intestinal tissues of inflammatory bowel disease (IBD) patients, TFH and its functions in colitis development were analyzed by FACS, ChIP, ChIP-sequencing, WB, ELISA and PCR. Herein we demonstrate that intestinal tissues of patients and colon tissues obtained from Rag1-/- recipients of naïve CD4+ T cells with colitis, each over-express TFH-associated gene products. Adoptive transfer of naïve Bcl6-/- CD4+ T cells into Rag1-/- recipient mice abrogated development of colitis and limited TFH differentiation in vivo, demonstrating a mechanistic link. In contrast, T cell deficiency of interferon regulatory factor 8 (IRF8) resulted in augmentation of TFH induction in vitro and in vivo. Functional studies showed that adoptive transfer of IRF8 deficient CD4+ T cells into Rag1-/- recipients exacerbated colitis development associated with increased gut TFH-related gene expression, while Irf8-/-/Bcl6-/- CD4+ T cells abrogated colitis, together indicating that IRF8-regulated TFH can directly cause colon inflammation. Molecular analyses revealed that IRF8 suppresses TFH differentiation by inhibiting transcription and transactivation of the TF IRF4, which is also known to be essential for TFH induction. Our documentation showed that IRF8-regulated TFH can function as B-cell-independent, pathogenic, mediators of colitis suggests that targeting TFH could be effective for treatment of IBD.
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Affiliation(s)
- Ruihua Zhang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yuan Hu
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yanhong Shan
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yuan-Pang Hsieh
- Department of Biological Sciences, College of Science, Virginia Tech, USA
| | - Feihong Xu
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Geming Lu
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jun Dai
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Monica Gupta
- Programs in Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Miao Cui
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Liang Peng
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jianjun Yang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Qingjie Xue
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Ray Chen-Liang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kang Chen
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI 48201, USA
| | - Yeyunfei Zhang
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | | | - Liwu Li
- Department of Biological Sciences, College of Science, Virginia Tech, USA
| | - Herbert C Morse
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Keiko Ozato
- Programs in Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter S Heeger
- Department of Medicine, Translational Transplant Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Huabao Xiong
- Department of Medicine, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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Akkaya M, Akkaya B, Sheehan PW, Miozzo P, Pena M, Qi CF, Manzella-Lapeira J, Bolland S, Pierce SK. T cell-dependent antigen adjuvanted with DOTAP-CpG-B but not DOTAP-CpG-A induces robust germinal center responses and high affinity antibodies in mice. Eur J Immunol 2017; 47:1890-1899. [PMID: 28762497 DOI: 10.1002/eji.201747113] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/11/2017] [Accepted: 07/28/2017] [Indexed: 12/12/2022]
Abstract
The development of vaccines for infectious diseases for which we currently have none, including HIV, will likely require the use of adjuvants that strongly promote germinal center responses and somatic hypermutation to produce broadly neutralizing antibodies. Here we compared the outcome of immunization with the T-cell dependent antigen, NP-conjugated to chicken gamma globulin (NP-CGG) adjuvanted with the toll-like receptor 9 (TLR9) ligands, CpG-A or CpG-B, alone or conjugated with the cationic lipid carrier, DOTAP. We provide evidence that only NP-CGG adjuvanted with DOTAP-CpG-B was an effective vaccine in mice resulting in robust germinal center responses, isotype switching and high affinity NP-specific antibodies. The effectiveness of DOTAP-CpG-B as an adjuvant was dependent on the expression of the TLR9 signaling adaptor MyD88 in immunized mice. These results indicate DOTAP-CpG-B but not DOTAP-CpG-A is an effective adjuvant for T cell-dependent protein antigen-based vaccines.
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Affiliation(s)
- Munir Akkaya
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Billur Akkaya
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Patrick W Sheehan
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Pietro Miozzo
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Mirna Pena
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Javier Manzella-Lapeira
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Silvia Bolland
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Susan K Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
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Morawski PA, Qi CF, Bolland S. Non-pathogenic CD8+ T cells in lupus-prone mice regulate neurological and peripheral disease. The Journal of Immunology 2017. [DOI: 10.4049/jimmunol.198.supp.156.1] [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: 01/05/2023]
Abstract
Abstract
Lupus is a systemic autoimmune disorder affecting multiple organ systems including the skin, kidneys, spleen, lungs, and brain. Severe SLE often manifests with multiple psychiatric and neurological sequelae, and may be accompanied by CNS vasculitis. However, the cellular contributors to CNS disease in lupus patients remain poorly defined. We have uncovered a unique bias for CD8+ T cell infiltration in the CNS of mice expressing multiple copies of Toll-like receptor 7 (TLR7[Tg]), which present with a lupus-like disease. These animals exhibit blood brain barrier damage and neuropathology in the presence of infiltrating T cells. However, genetic ablation of CD8+ T cells in lupus-prone mice by removal of the major histocompatibility complex (MHC) adaptor protein b2m results in aggravation of disease, suggesting the removal of a protective population. Relative to the peripheral CD8+ T cells in lupus-prone mice, those in the CNS represent the most activated lymphocytes in the animal, display a tissue resident-memory phenotype, and can home to the brain. We have also identified a population of CD8+ T cells in the cerebrospinal fluid (CSF) of several lupus patients. Similar to our animal model findings the human CD8+ T cells in the CSF have a large increase in antigen experience by surface phenotyping relative to lymphocytes from peripheral blood. Our ongoing studies aim to elucidate specifically how these CD8+ T cells enter the CNS and further clarify their role in neuropathology. Our findings suggest a possible mechanism of CNS pathology regulation that could have applicability to human neuropsychiatric manifestations of SLE.
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Akkaya M, Akkaya B, Sheehan P, Miozzo P, Rawat M, Pena M, Kim AS, Kamenyeva O, Kabat J, Qi CF, Bolland S, Chaturvedi A, Pierce SK. The Toll-like receptor ligand CpG-A induces type 1 interferons in B cells contrasting the proinflammatory inducing activity of CpG-B. The Journal of Immunology 2017. [DOI: 10.4049/jimmunol.198.supp.152.4] [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
B cells express the innate immune system receptor, Toll like receptor 9 (TLR9), a potent regulator of B cell function, that signals in response to unmethylated CpG sequences in microbial DNA. A dichotomy in the function of the two major classes of CpG-containing oligonucleotides, namely CpG-A and CpG-B, appears to exist with CpG-A restricted to inducing type 1 interferon (type 1 IFN) in innate immune cells and CpG-B to activating B cells to proliferate and produce antibody and inflammatory cytokines. Although CpGs are candidates for adjuvants to boost the innate and adaptive immunity, our understanding of the effect of CpG-A and CpG-B on B cell responses is incomplete. We provide evidence that CpG-A activated B cells in vitro in a TLR9 dependent fashion resulting in the production of IL-6, proliferation, and alterations in the expression of a variety of B cell surface markers, albeit in a less robust fashion as compared to CpG-B. Neither CpGB nor CpG-A alone induced B cells to express type 1 IFN. However, when incorporated into the cationic lipid, DOTAP, CpG-A, but not CpG-B induced a robust type 1 IFN response in B cells both in vitro and in vivo. Conversely, CpG-B-DOTAP but not CpGA-DOTAP promoted B cell germinal center responses in vivo and the production of high affinity antibodies. We also provide evidence that difference in the function of CpGs versus DOTAP-associated-CpGs may be related to their intracellular trafficking in B cells since DOTAP enhances the trafficking of CpG-B but not CpG-A to late endosomal compartments. These findings have important implications for the use of CpG-A and CpG-B to augment type 1 IFN production versus B cell responses in vivo.
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Sun W, Qi CF, Scott B, Bolland S. Autoimmune responses are dependent on the MAVS innate pathway due to its natural co-stimulating effect on B cell activation and maturation. The Journal of Immunology 2017. [DOI: 10.4049/jimmunol.198.supp.54.8] [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: 01/03/2023]
Abstract
Abstract
There is evidence that autoimmune disease might be induced by deficient regulation of innate immune pathways that normally induce type I interferon in response to pathogen-derived nucleic acids. To investigate a potential role for nucleic acid sensing pathways with cytosolic localization and more ubiquitous expression, we tested the requirement for MAVS (dsRNA-sensing) or STING (dsDNA-sensing) in the lupus autoimmune disease developed by FcγRIIB-KO (R2−/−) mice. These experiments revealed that STING was mildly protective, while MAVS was an essential factor for autoimmune disease in R2−/− mice. We found that MAVS deficiency, but not type I IFN receptor deficiency, completely eliminated autoantibodies and autoimmune pathology in R2−/− mice. MAVS deficiency also eliminated spontaneous activation of B and T cells, germinal center formation and follicular helper T cell development. Using mixed bone marrow reconstitution experiments, we determined that MAVS was required for autoreactivity in a B cell intrinsic manner, with a profound effect on B cell survival in the germinal center. MAVS deficiency did not alter BCR-proximal signaling, but resulted in diminished long term proliferative capacity of B cells, with lower cyclin D2 and Bcl-xL expression 24 hours after anti-IgM stimulation. MAVS deficiency also resulted in B cell developmental defects, fewer total B cells but a skewing toward marginal zone and against the follicular B cell program. Overall MAVS seems to provide its costimulatory effect independent of type I IFN, by enhancing the activation of NFκB in situations where T cell help or other modes of costimulation are not present and most importantly, by providing survival stimulus for autoreactive B cells.
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Peng L, Zhang H, Hao Y, Xu F, Yang J, Zhang R, Lu G, Zheng Z, Cui M, Qi CF, Chen C, Wang J, Hu Y, Wang D, Pierce S, Li L, Xiong H. Reprogramming macrophage orientation by microRNA 146b targeting transcription factor IRF5. EBioMedicine 2016; 14:83-96. [PMID: 27825654 PMCID: PMC5161420 DOI: 10.1016/j.ebiom.2016.10.041] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 05/11/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 12/20/2022] Open
Abstract
The regulation of macrophage orientation pathological conditions is important but still incompletely understood. Here, we show that IL-10 and Rag1 double knockout mice spontaneously develop colitis with dominant M1 macrophage phenotype, suggesting that IL-10 regulates macrophage orientation in inflammation. We demonstrate that IL-10 stimulation induced miR-146b expression, and that the expression of miR-146b was impaired in IL-10 deficient macrophages. Our data show that miR-146b targets IRF5, resulting in the regulation of macrophage activation. Furthermore, miR-146b deficient mice developed intestinal inflammation with enhanced M1 macrophage polarization. Finally, miR-146b mimic treatment significantly suppresses M1 macrophage activation and ameliorates colitis development in vivo. Collectively, the results suggest that IL-10 dependent miR-146b plays an important role in the modulation of M1 macrophage orientation. Interleukin 10-induced miR-146b plays a critical role in the regulation of macrophage polarization and colitis development by targeting IRF5. Treatment with miR-146b mimic significantly suppresses M1 macrophage activation and ameliorates colitis development.
Interleukin 10 and Interleukin receptor are clearly involved in the development of inflammatory bowel diseases and other inflammatory diseases. Notably, the mutation of Interleukin 10 and Interleukin 10 receptor are clearly correlated with inflammatory bowel diseases. In the present study we show that Interleukin 10-induced miR-146b plays a critical role in the regulation of macrophage polarization and colitis development by targeting IRF5. Treatment with miR-146b mimic significantly suppresses M1 macrophage activation and ameliorates colitis development. The results highlight the potent role of miR146b in the control of immune responses and pathogenesis of inflammatory diseases.
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Affiliation(s)
- Liang Peng
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Hui Zhang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Yuanyuan Hao
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Feihong Xu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Jianjun Yang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Ruihua Zhang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Geming Lu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Zihan Zheng
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Miao Cui
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, United States
| | - Chun Chen
- Department of Biological Sciences, Center for Inflammation, Virginia Tech, Blacksburg, VA 24061, United States
| | - Juan Wang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Yuan Hu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Di Wang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States
| | - Susan Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, United States
| | - Liwu Li
- Department of Biological Sciences, Center for Inflammation, Virginia Tech, Blacksburg, VA 24061, United States
| | - Huabao Xiong
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai,New York, NY 10029, United States; Institute of Immunology and Molecular Medicine, Jining Medical College, Jining, Shangdong 272067, China.
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21
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Voss OH, Murakami Y, Pena MY, Lee HN, Tian L, Margulies DH, Street JM, Yuen PST, Qi CF, Krzewski K, Coligan JE. Lipopolysaccharide-Induced CD300b Receptor Binding to Toll-like Receptor 4 Alters Signaling to Drive Cytokine Responses that Enhance Septic Shock. Immunity 2016; 44:1365-78. [PMID: 27261276 DOI: 10.1016/j.immuni.2016.05.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 02/03/2016] [Accepted: 02/20/2016] [Indexed: 12/12/2022]
Abstract
Receptor CD300b is implicated in regulating the immune response to bacterial infection by an unknown mechanism. Here, we identified CD300b as a lipopolysaccharide (LPS)-binding receptor and determined the mechanism underlying CD300b augmentation of septic shock. In vivo depletion and adoptive transfer studies identified CD300b-expressing macrophages as the key cell type augmenting sepsis. We showed that CD300b, and its adaptor DAP12, associated with Toll-like receptor 4 (TLR4) upon LPS binding, thereby enhancing TLR4-adaptor MyD88- and TRIF-dependent signaling that resulted in an elevated pro-inflammatory cytokine storm. LPS engagement of the CD300b-TLR4 complex led to the recruitment and activation of spleen tyrosine kinase (Syk) and phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K). This resulted in an inhibition of the ERK1/2 protein kinase- and NF-κB transcription factor-mediated signaling pathways, which subsequently led to a reduced interleukin-10 (IL-10) production. Collectively, our data describe a mechanism of TLR4 signaling regulated by CD300b in myeloid cells in response to LPS.
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Affiliation(s)
- Oliver H Voss
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Yousuke Murakami
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Mirna Y Pena
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Ha-Na Lee
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Linjie Tian
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - David H Margulies
- Molecular Biology Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20814, USA
| | - Jonathan M Street
- Renal Diagnostics and Therapeutics Unit, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20814, USA
| | - Peter S T Yuen
- Renal Diagnostics and Therapeutics Unit, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20814, USA
| | - Chen-Feng Qi
- Pathology Core, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Konrad Krzewski
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - John E Coligan
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA.
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22
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Morawski PA, Qi CF, Bolland S. Brain infiltrating CD8+ T lymphocytes in lupus-prone mice. The Journal of Immunology 2016. [DOI: 10.4049/jimmunol.196.supp.186.2] [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
Systemic lupus erythematosus (SLE) is an autoimmune disorder affecting multiple organ systems including the skin, kidneys, spleen, lungs, and brain. Severe SLE often manifests with multiple psychiatric and neurological sequelae, and may be accompanied by CNS vasculitis. However, the cellular contributors to CNS disease in lupus patients remain poorly defined. Our data demonstrate a unique lymphocyte bias in the CNS of mice expressing multiple copies of Toll-like receptor 7 (TLR7[Tg], FcgRIIB-Yaa), which present with a lupus-like disease. Lupus-prone mice have a substantial population of infiltrating CD8+ T cells in the CNS, a bias that is not present in other peripheral lymphoid or non-lymphoid tissues. These animals exhibit blood-brain barrier damage and neuropathology in the presence of the infiltrating lymphocytes. However, genetic ablation of CD8+ T cells in lupus-prone mice by removal of the major histocompatibility complex (MHC) adaptor protein b2m results in aggravation of disease, suggesting the removal of a protective population. Circulating CD8+ T cells in lupus-prone mice display an activated phenotype, express a number of surface trafficking and adhesion molecules, and can home to the CNS. The endothelium of the brain, but not of other peripheral organs in these mice is activated, expressing adhesion markers complementary to those found on infiltrating CD8+ T cells. Our ongoing studies aim to elucidate specifically how these CD8+ T cells enter the CNS and further clarify their role in neuropathology. Our findings suggest a possible mechanism regulating CNS pathology that could have applicability to human neuropsychiatric manifestations of SLE.
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23
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Tian L, Choi SC, Murakami Y, Allen J, Morse HC, Qi CF, Krzewski K, Coligan JE. p85α recruitment by the CD300f phosphatidylserine receptor mediates apoptotic cell clearance required for autoimmunity suppression. Nat Commun 2016; 5:3146. [PMID: 24477292 DOI: 10.1038/ncomms4146] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/18/2013] [Indexed: 02/07/2023] Open
Abstract
Apoptotic cell (AC) clearance is essential for immune homeostasis. Here we show that mouse CD300f (CLM-1) recognizes outer membrane-exposed phosphatidylserine, and regulates the phagocytosis of ACs. CD300f accumulates in phagocytic cups at AC contact sites. Phosphorylation within CD300f cytoplasmic tail tyrosine-based motifs initiates signals that positively or negatively regulate AC phagocytosis. Y276 phosphorylation is necessary for enhanced CD300f-mediated phagocytosis through the recruitment of the p85α regulatory subunit of phosphatidylinositol-3-kinase (PI3K). CD300f-PI3K association leads to activation of downstream Rac/Cdc42 GTPase and mediates changes of F-actin that drive AC engulfment. Importantly, primary macrophages from CD300f-deficient mice have impaired phagocytosis of ACs. The biological consequence of CD300f deficiency is predisposition to autoimmune disease development, as FcγRIIB-deficient mice develop a systemic lupus erythematosus-like disease at a markedly accelerated rate if CD300f is absent. In this report we identify the mechanism and role of CD300f in AC phagocytosis and maintenance of immune homeostasis.
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Affiliation(s)
- Linjie Tian
- 1] Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA [2]
| | - Seung-Chul Choi
- 1] Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA [2]
| | - Yousuke Murakami
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
| | - Joselyn Allen
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
| | - Herbert C Morse
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
| | - Chen-Feng Qi
- Pathology core, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
| | - Konrad Krzewski
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
| | - John E Coligan
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA
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24
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Tran TM, Gordon EB, Hart GT, Waisberg M, Akkaya M, Kim A, Hamilton SE, Pena M, Yazew T, Qi CF, Miller LH, Powell JD, Pierce SK. Novel Adjunctive Therapies for Cerebral Malaria That Target Metabolism. Open Forum Infect Dis 2015. [DOI: 10.1093/ofid/ofv133.1159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Saloustros E, Salpea P, Qi CF, Gugliotti LA, Tsang K, Liu S, Starost MF, Morse HC, Stratakis CA. Hematopoietic neoplasms in Prkar2a-deficient mice. J Exp Clin Cancer Res 2015; 34:143. [PMID: 26608815 PMCID: PMC4660639 DOI: 10.1186/s13046-015-0257-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 11/11/2015] [Indexed: 12/22/2022]
Abstract
Background Protein kinase A (PKA) is a holoenzyme that consists of a dimer of regulatory subunits and two inactive catalytic subunits that bind to the regulatory subunit dimer. Four regulatory subunits (RIα, RIβ, RIIα, RIIβ) and four catalytic subunits (Cα, Cβ, Cγ, Prkx) have been described in the human and mouse genomes. Previous studies showed that complete inactivation of the Prkar1a subunit (coding for RIα) in the germline leads to embryonic lethality, while Prkar1a–deficient mice are viable and develop schwannomas, thyroid, and bone neoplasms, and rarely lymphomas and sarcomas. Mice with inactivation of the Prkar2a and Prkar2b genes (coding for RIIα and RIIβ, respectively) are also viable but have not been studied for their susceptibility to any tumors. Methods Cohorts of Prkar1a+/−, Prkar2a+/−, Prkar2a−/−, Prkar2b+/− and wild type (WT) mice have been observed between 5 and 25 months of age for the development of hematologic malignancies. Tissues were studied by immunohistochemistry; tumor-specific markers were also used as indicated. Cell sorting and protein studies were also performed. Results Both Prkar2a−/− and Prkar2a+/− mice frequently developed hematopoietic neoplasms dominated by histiocytic sarcomas (HS) with rare diffuse large B cell lymphomas (DLBCL). Southern blot analysis confirmed that the tumors diagnosed histologically as DLBCL were clonal B cell neoplasms. Mice with other genotypes did not develop a significant number of similar neoplasms. Conclusions Prkar2a deficiency predisposes to hematopoietic malignancies in vivo. RIIα’s likely association with HS and DLBCL was hitherto unrecognized and may lead to better understanding of these rare neoplasms.
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Affiliation(s)
- Emmanouil Saloustros
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology & Genetics (PDEGEN) & Pediatric Endocrinology Inter-institute Training Program, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Paraskevi Salpea
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology & Genetics (PDEGEN) & Pediatric Endocrinology Inter-institute Training Program, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 5640 Fishers Lane, Rockville, MD, 20852, USA.
| | - Lina A Gugliotti
- Program in Genomics and Differentiation, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Kitman Tsang
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology & Genetics (PDEGEN) & Pediatric Endocrinology Inter-institute Training Program, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Sisi Liu
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology & Genetics (PDEGEN) & Pediatric Endocrinology Inter-institute Training Program, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Matthew F Starost
- Division of Veterinary Resources, Office of the Director (OD), National Institutes of Health, Bethesda, MD, 20892, USA.
| | - Herbert C Morse
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 5640 Fishers Lane, Rockville, MD, 20852, USA.
| | - Constantine A Stratakis
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology & Genetics (PDEGEN) & Pediatric Endocrinology Inter-institute Training Program, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
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Paschall A, Zhang R, Bardhan K, Qi CF, Peng L, Lu G, Yang J, Merad M, Zimmerman M, McGaha T, Zhou G, Mellor A, Abrams SI, Morse H, Ozato K, Xiong H, Liu K. Abstract PR05: IRF8 regulates GM-CSF expression in T cells and tumor cells to mediate myeloid-derived suppressor cell differentiation. Cancer Immunol Res 2015. [DOI: 10.1158/2326-6074.tumimm14-pr05] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Myeloid cells are a heterogenous and abundant population of haematopoietic cells that are virtually present in all mammalian tissues, where they monitor local microenvironment to maintain homeostasis. All myeloid cells originate from the pluripotent hematopoietic stem cells that undergo progressive restriction in their lineage potential to give rise to mature granulocytes and macrophages. Lineage restriction and differentiation are regulated by timely activation of specific set of lineage-specific transcription factors in concert with down-regulation of other set(s) of transcription factors that are important for alternative cell lineage potential. Altered expression of these lineage-specific transcription factors often leads to deregulation of myelopoiesis and resultant hematopoietic disorders. Therefore, lineage-specific transcription factors are essential for myeloid cell lineage differentiation and maturation. Mice with a null mutation of irf8, the gene that encodes IFN regulatory factor 8 (IRF8), exhibit massive accumulation of CD11b+Gr1+ immature myeloid cells (IMCs). Therefore, IRF8 is a myeloid cell lineage-specific transcription factor that plays an essential function in the regulation of myelopoiesis. Particularly, IRF8 may determine differentiation, lineage commitment, and immune function of monocytes versus granulocytes under physiological conditions.
A hallmark of cancer-bearing mice is the accumulation of CD11b+Gr1+ myeloid-derived suppressor cells (MDSCs). Interestingly, IRF8 is silenced in MDSCs from tumor-bearing mice. Therefore, IRF8 is apparently a key transcription factor that mediates MDSC differentiation. However, the molecular mechanism underlying IRF8 regulation of MDSCs is largely unknown. Because MDSCs is induced by inflammation, we therefore hypothesized that IRF8 may repress the expression of proinflammatory factors to mediate differentiation of MDSCs/IMCs under physiological and pathological conditions. To test this hypothesis, we made use of conventional IRF8 KO mice, mice with IRF8 deficiency only in myeloid cells, mice with IRF8 deficiency only in T cells, and tumor-bearing mouse models. Here we report an intriguing finding that although IRF8 conventional mice exhibit deregulated myeloid cell differentiation and resultant accumulation of CD11b+Gr1+ IMCs, surprisingly, mice with IRF8 deficiency only in myeloid cells exhibit normal myeloid cell lineage differentiation. Instead, mice with IRF8 deficiency only in T cells exhibited deregulated myeloid cell differentiation and IMC accumulation. We further demonstrated that IRF8-deficient T cells exhibit elevated GM-CSF expression and secretion. Treatment of mice with GM-CSF increased IMC accumulation, and adoptive transfer of IRF8-deficient T cells, but not GM-CSF-deficient T cells, increased IMC accumulation in the recipient chimera mice. Moreover, overexpression of IRF8 decreased GM-CSF expression in T cells. These data thus determine that IRF8 functions in T cells to repress GM-CSF expression to suppress IMCs. However, in tumor-bearing mice, IRF8 is silenced in MDSCs but not in T cells, suggesting a different mechanism of MDSC regulation by IRF8. We observed that silencing IRF8 using IRF8-specific siRNA dramatically increase GM-CSF expression in tumor cells. Therefore, IRF8 represses GM-CSF expression in tumor cells to mediate MDSC differentiation. In summary, we determine that IRF8 regulates GM-CSF expression in T cells and tumor cells, respectively, to mediate myelopoiesis under physiological and pathological conditions.
This abstract is also presented as Poster A84.
Citation Format: Amy Paschall, Ruihua Zhang, Kankana Bardhan, Chen-Feng Qi, Liang Peng, Geming Lu, Jianjun Yang, Miriam Merad, Mary Zimmerman, Tracy McGaha, Gang Zhou, Andrew Mellor, Scott I. Abrams, Herbert Morse, Keiko Ozato, Huabao Xiong, Kebin Liu. IRF8 regulates GM-CSF expression in T cells and tumor cells to mediate myeloid-derived suppressor cell differentiation. [abstract]. In: Proceedings of the AACR Special Conference: Tumor Immunology and Immunotherapy: A New Chapter; December 1-4, 2014; Orlando, FL. Philadelphia (PA): AACR; Cancer Immunol Res 2015;3(10 Suppl):Abstract nr PR05.
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Affiliation(s)
| | - Ruihua Zhang
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | | | | | - Liang Peng
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Geming Lu
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Jianjun Yang
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Miriam Merad
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | | | | | - Gang Zhou
- 1Georgia Regents University, Augusta, GA,
| | | | | | | | - Keiko Ozato
- 3Nathional Institute of Health, Bethesda, MD,
| | - Huabao Xiong
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Kebin Liu
- 1Georgia Regents University, Augusta, GA,
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Paschall A, Zhang R, Bardhan K, Qi CF, Peng L, Lu G, Yang J, Merad M, Zimmerman M, McGaha T, Zhou G, Mellor A, Abrams SI, Morse H, Ozato K, Xiong H, Liu K. Abstract A84: IRF8 regulates GM-CSF expression in T cells and tumor cells to mediate myeloid-derived suppressor cell differentiation. Cancer Immunol Res 2015. [DOI: 10.1158/2326-6074.tumimm14-a84] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract is being presented as a short talk in the scientific program. A full abstract is printed in the Proffered Abstracts section (PR05) of the Conference Proceedings.
Citation Format: Amy Paschall, Ruihua Zhang, Kankana Bardhan, Chen-Feng Qi, Liang Peng, Geming Lu, Jianjun Yang, Miriam Merad, Mary Zimmerman, Tracy McGaha, Gang Zhou, Andrew Mellor, Scott I. Abrams, Herbert Morse, Keiko Ozato, Huabao Xiong, Kebin Liu. IRF8 regulates GM-CSF expression in T cells and tumor cells to mediate myeloid-derived suppressor cell differentiation. [abstract]. In: Proceedings of the AACR Special Conference: Tumor Immunology and Immunotherapy: A New Chapter; December 1-4, 2014; Orlando, FL. Philadelphia (PA): AACR; Cancer Immunol Res 2015;3(10 Suppl):Abstract nr A84.
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Affiliation(s)
| | - Ruihua Zhang
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | | | | | - Liang Peng
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Geming Lu
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Jianjun Yang
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Miriam Merad
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | | | | | - Gang Zhou
- 1Georgia Regents University, Augusta, GA,
| | | | | | | | - Keiko Ozato
- 3National Institutes of Health, Bethesda, MD,
| | - Huabao Xiong
- 2Icahn School of Medicine at Mount Sinai, New York, NY,
| | - Kebin Liu
- 1Georgia Regents University, Augusta, GA,
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Voynova E, Qi CF, Scott B, Bolland S. Cutting Edge: Induction of Inflammatory Disease by Adoptive Transfer of an Atypical NK Cell Subset. J Immunol 2015; 195:806-9. [PMID: 26109646 DOI: 10.4049/jimmunol.1500540] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 06/03/2015] [Indexed: 12/12/2022]
Abstract
Several mouse models of systemic lupus erythematosus, including FcγRIIB-KO and TLR7tg mice, develop an expansion of an atypical NK cell subset with functional similarity to cells referred as IFN-producing killer DCs or pre-mature NKs in other systems. In this study, we show that atypical NKs purified from spleens of systemic lupus erythematosus-prone mice, and identified as NK1.1(+)CD11c(+)CD122(+)MHC-II(+), induce persistent autoimmune disease in an IFN-I- and CD40L-dependent manner when transferred to wild-type mice. A single transfer of 4 × 10(6) NK1.1(+) cells from TLR7tg into wild-type induces a 2-wk-long wave of inflammatory cytokines in the serum; a sustained increase in T cell activation and follicular helper cells for the following months; and a progressive expansion of dendritic cells, monocytes, and granulocytes. Furthermore, IL-15 deficiency, which impedes development of NK cells, ameliorates the autoimmune pathology of TLR7tg mice. These results suggest that cells of the NK lineage can develop into cytokine-producing/APCs that affect the priming and progression of systemic autoimmune disease.
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Affiliation(s)
- Elisaveta Voynova
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Bethany Scott
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Silvia Bolland
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
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Bolland S, Voynova E, Skinner J, Scott B, Qi CF. Induction of autoimmune disease by adoptive transfer of an atypical NK cell subset (BA7P.147). The Journal of Immunology 2015. [DOI: 10.4049/jimmunol.194.supp.115.7] [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: 12/31/2022]
Abstract
Abstract
Several mouse models of SLE, including FcgRIIB-KO and TLR7tg mice, develop an expansion of an atypical NK cell subset with functional similarity to cells referred as IKDCs or pre-mNKs in other systems and identified as NK1.1+CD11c+CD122+MHC-II+. These cells belong to the NK cell lineage because they depend on IL15 and express E4BP4. Functionally they are cytotoxic, produce type I and type II interferons upon activation and they are efficient antigen presenting cells both through MHC-II expression and in cross-presentation to CD8s. These atypical NK cells are responsive to TLR stimulation and thus are most abundant in mice with high copy number of the Tlr7 gene. They are highly proliferative as assessed by in vivo BrdU incorporation. Transferring 4 million atypical NKs purified from spleens of SLE-prone mice into WT induces a 2-week-long wave of inflammatory cytokines in the serum, a sustained increase in T cell activation and follicular helper cells for the following months, and a progressive expansion of dendritic cells, monocytes and granulocytes. Furthermore IL15 deficiency, which impedes development of NK cells, ameliorates the autoimmune pathology of TLR7tg mice. These results suggest that cells of the NK lineage can develop into cytokine producing/antigen-presenting cells that affect the priming and progression of systemic autoimmune disease.
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Paschall A, Zhang RH, Qi CF, Bardhan K, Peng L, Lu G, Yang J, Merad M, McGaha T, Zhou G, Mellor A, Abrams S, Morse H, Ozato K, Xiong H, Liu K. IRF8 expressed in T cells regulates GM-CSF expression to control myeloid derived suppressor cell differentiation (TUM6P.955). The Journal of Immunology 2015. [DOI: 10.4049/jimmunol.194.supp.141.3] [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
During hematopoiesis, hematopoietic stem cells differentiate into granulocytes and macrophages via a distinct differentiation program that is controlled by myeloid lineage-specific transcription factors. Mice with a null mutation of IFN Regulatory Factor 8 (IRF8) accumulate CD11b+Gr1+ myeloid cells that phenotypically and functionally resemble tumor-induced myeloid-derived suppressor cells (MDSCs), indicating an essential role of IRF8 in myeloid cell lineage differentiation. However, whether IRF8 functions intrinsically or extrinsically in regulation of myeloid cell differentiation is not fully understood. Here we report an intriguing finding that mice with IRF8 deficiency only in myeloid cells exhibit no abnormal myeloid cell lineage differentiation. Instead, mice with IRF8 deficiency only in T cells exhibited MDSC accumulation. We further demonstrated that IRF8-deficient T cells exhibit elevated GM-CSF expression and secretion. Treatment of mice with GM-CSF increased MDSC accumulation, and adoptive transfer of IRF8- deficient T cells, but not GM-CSF-deficient T cells, increased MDSC accumulation in the recipient mice. Overexpression of IRF8 decreased GM-CSF in T cells. Our data determine that in addition to its intrinsic role as an apoptosis regulator in myeloid cells, IRF8 also acts extrinsically to repress GM-CSF expression in T cells to control myeloid cell lineage differentiation, revealing a novel mechanism of adaptive immune cell regulation of myelopoiesis in vivo.
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Affiliation(s)
- Amy Paschall
- 1Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA
- 2Charlie Norwood VA Medical Center, Augusta, GA
- 3Cancer Immunology, Inflammation, and Tolerance, Georgia Regents University, Augusta, GA
| | - Rui-hua Zhang
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Chen-Feng Qi
- 5Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD
| | - Kankana Bardhan
- 1Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA
| | - Liang Peng
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Geming Lu
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jianjun Yang
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Miriam Merad
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Tracy McGaha
- 3Cancer Immunology, Inflammation, and Tolerance, Georgia Regents University, Augusta, GA
| | - Gang Zhou
- 3Cancer Immunology, Inflammation, and Tolerance, Georgia Regents University, Augusta, GA
| | - Andrew Mellor
- 3Cancer Immunology, Inflammation, and Tolerance, Georgia Regents University, Augusta, GA
| | - Scott Abrams
- 6Immunology, Roswell Park Cancer Inst., Buffalo, NY
| | - Herbert Morse
- 5Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD
| | - Keiko Ozato
- 7Programs in Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Development, NIH, Bethesda, MD
| | - Huabao Xiong
- 4Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Kebin Liu
- 1Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA
- 3Cancer Immunology, Inflammation, and Tolerance, Georgia Regents University, Augusta, GA
- 2Charlie Norwood VA Medical Center, Augusta, GA
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Lu G, Zhang R, Geng S, Peng L, Jayaraman P, Chen C, Xu F, Yang J, Li Q, Zheng H, Shen K, Wang J, Liu X, Wang W, Zheng Z, Qi CF, Si C, He JC, Liu K, Lira SA, Sikora AG, Li L, Xiong H. Myeloid cell-derived inducible nitric oxide synthase suppresses M1 macrophage polarization. Nat Commun 2015; 6:6676. [PMID: 25813085 PMCID: PMC4389243 DOI: 10.1038/ncomms7676] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/17/2015] [Indexed: 12/31/2022] Open
Abstract
Here we show that iNOS-deficient mice display enhanced classically activated M1 macrophage polarization without major effects on alternatively activated M2 macrophages. eNOS and nNOS mutant mice show comparable M1 macrophage polarization compared with wild-type control mice. Addition of N6-(1-iminoethyl)-L-lysine dihydrochloride, an iNOS inhibitor, significantly enhances M1 macrophage polarization while S-nitroso-N-acetylpenicillamine, a NO donor, suppresses M1 macrophage polarization. NO derived from iNOS mediates nitration of tyrosine residues in IRF5 protein, leading to the suppression of IRF5-targeted M1 macrophage signature gene activation. Computational analyses corroborate a circuit that fine-tunes the expression of IL-12 by iNOS in macrophages, potentially enabling versatile responses based on changing microenvironments. Finally, studies of an experimental model of endotoxin shock show that iNOS deficiency results in more severe inflammation with an enhanced M1 macrophage activation phenotype. These results suggest that NO derived from iNOS in activated macrophages suppresses M1 macrophage polarization. In response to microbial ligands, IRF5 promotes pro-inflammatory M1 macrophage activation and production of nitrous oxide. Here the authors show that nitrous oxide modifies IRF5 tyrosine residues as a negative feedback, limiting the inflammatory response and protecting from endotoxin shock.
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Affiliation(s)
- Geming Lu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Ruihua Zhang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Shuo Geng
- Department of Biological Sciences, Center for Inflammation, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Liang Peng
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Padmini Jayaraman
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Chun Chen
- Department of Biological Sciences, Center for Inflammation, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Feifong Xu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Jianjun Yang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Qin Li
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Hao Zheng
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Kimberly Shen
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Juan Wang
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Xiyu Liu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Weidong Wang
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Medical College of Cornell University, New York, New York 10021, USA
| | - Zihan Zheng
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Chuanping Si
- Institute of Immunology and Molecular Medicine, Jining Medical College, Jining, Shandong 272067, China
| | - John Cijiang He
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia 30912, USA
| | - Sergio A Lira
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Andrew G Sikora
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Liwu Li
- Department of Biological Sciences, Center for Inflammation, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Huabao Xiong
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA.,Institute of Immunology and Molecular Medicine, Jining Medical College, Jining, Shandong 272067, China
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Paschall AV, Zhang R, Qi CF, Bardhan K, Peng L, Lu G, Yang J, Merad M, McGaha T, Zhou G, Mellor A, Abrams SI, Morse HC, Ozato K, Xiong H, Liu K. IFN regulatory factor 8 represses GM-CSF expression in T cells to affect myeloid cell lineage differentiation. J Immunol 2015; 194:2369-79. [PMID: 25646302 DOI: 10.4049/jimmunol.1402412] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
During hematopoiesis, hematopoietic stem cells constantly differentiate into granulocytes and macrophages via a distinct differentiation program that is tightly controlled by myeloid lineage-specific transcription factors. Mice with a null mutation of IFN regulatory factor 8 (IRF8) accumulate CD11b(+)Gr1(+) myeloid cells that phenotypically and functionally resemble tumor-induced myeloid-derived suppressor cells (MDSCs), indicating an essential role of IRF8 in myeloid cell lineage differentiation. However, IRF8 is expressed in various types of immune cells, and whether IRF8 functions intrinsically or extrinsically in regulation of myeloid cell lineage differentiation is not fully understood. In this study, we report an intriguing finding that, although IRF8-deficient mice exhibit deregulated myeloid cell differentiation and resultant accumulation of CD11b(+)Gr1(+) MDSCs, surprisingly, mice with IRF8 deficiency only in myeloid cells exhibit no abnormal myeloid cell lineage differentiation. Instead, mice with IRF8 deficiency only in T cells exhibited deregulated myeloid cell differentiation and MDSC accumulation. We further demonstrated that IRF8-deficient T cells exhibit elevated GM-CSF expression and secretion. Treatment of mice with GM-CSF increased MDSC accumulation, and adoptive transfer of IRF8-deficient T cells, but not GM-CSF-deficient T cells, increased MDSC accumulation in the recipient chimeric mice. Moreover, overexpression of IRF8 decreased GM-CSF expression in T cells. Our data determine that, in addition to its intrinsic function as an apoptosis regulator in myeloid cells, IRF8 also acts extrinsically to repress GM-CSF expression in T cells to control myeloid cell lineage differentiation, revealing a novel mechanism that the adaptive immune component of the immune system regulates the innate immune cell myelopoiesis in vivo.
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Affiliation(s)
- Amy V Paschall
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, GA 30912; Charlie Norwood VA Medical Center, Augusta, GA 30904
| | - Ruihua Zhang
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Kankana Bardhan
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Liang Peng
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Geming Lu
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Jianjun Yang
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Miriam Merad
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Tracy McGaha
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Gang Zhou
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Andrew Mellor
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Scott I Abrams
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263; and
| | - Herbert C Morse
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Keiko Ozato
- Programs in Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Huabao Xiong
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029;
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, GA 30912; Charlie Norwood VA Medical Center, Augusta, GA 30904;
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Tian L, Choi SC, Murakami Y, Allen J, Morse H, Qi CF, Krzewski K, Coligan J. p85a recruitment by the CD300f phosphatidylserine receptor mediates apoptotic cell clearance required for autoimmunity suppression (BA4P.222). The Journal of Immunology 2014. [DOI: 10.4049/jimmunol.192.supp.46.13] [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
The rapid and efficient removal of apoptotic cells (AC) prevents the release of the potentially toxic or immunogenic components from dying cells, thereby reducing inflammatory and autoimmune responses. Phagocytosis is the major means of clearing AC, which is dependent on the interaction between “eat-me” signals on AC and receptors on phagocytes. The externalized phosphatidylserine (PS) on AC is the best-known “eat-me” signal. We demonstrate that mouse CD300f (CLM-1) recognizes outer membrane-exposed PS and regulates AC phagocytosis. CD300f accumulates in phagocytic cups at AC contact sites. Phosphorylation within CD300f cytoplasmic tail tyrosine-based motifs initiates signals that positively or negatively regulate AC phagocytosis. Y276 phosphorylation is necessary for enhanced CD300f-mediated phagocytosis through the recruitment of the p85a regulatory subunit of phosphatidylinositol-3-kinase (PI3K). CD300f-PI3K association leads to activation of downstream Rac/Cdc42 GTPase and mediates changes of F-actin that drive AC engulfment. Importantly, primary macrophages from CD300f-deficient mice have impaired phagocytosis of ACs. The biological consequence of CD300f deficiency is predisposition to autoimmune disease development, as FcgRIIB-deficient mice develop a systemic lupus erythematosus-like disease at a markedly accelerated rate if CD300f is absent. This is the first report identifying the mechanism and role of CD300f in AC phagocytosis and maintenance of immune homeostasis.
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Affiliation(s)
- Linjie Tian
- 1Lab. of Immunogenetics, NIH/NIAID, Rockville, MD
| | | | | | | | | | - Chen-Feng Qi
- 1Lab. of Immunogenetics, NIH/NIAID, Rockville, MD
| | | | - John Coligan
- 1Lab. of Immunogenetics, NIH/NIAID, Rockville, MD
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Francischetti IMB, Gordon E, Bizzarro B, Gera N, Andrade BB, Oliveira F, Ma D, Assumpção TCF, Ribeiro JMC, Pena M, Qi CF, Diouf A, Moretz SE, Long CA, Ackerman HC, Pierce SK, Sá-Nunes A, Waisberg M. Tempol, an intracellular antioxidant, inhibits tissue factor expression, attenuates dendritic cell function, and is partially protective in a murine model of cerebral malaria. PLoS One 2014; 9:e87140. [PMID: 24586264 PMCID: PMC3938406 DOI: 10.1371/journal.pone.0087140] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 12/18/2013] [Indexed: 01/19/2023] Open
Abstract
Background The role of intracellular radical oxygen species (ROS) in pathogenesis of cerebral malaria (CM) remains incompletely understood. Methods and Findings We undertook testing Tempol—a superoxide dismutase (SOD) mimetic and pleiotropic intracellular antioxidant—in cells relevant to malaria pathogenesis in the context of coagulation and inflammation. Tempol was also tested in a murine model of CM induced by Plasmodium berghei Anka infection. Tempol was found to prevent transcription and functional expression of procoagulant tissue factor in endothelial cells (ECs) stimulated by lipopolysaccharide (LPS). This effect was accompanied by inhibition of IL-6, IL-8, and monocyte chemoattractant protein (MCP-1) production. Tempol also attenuated platelet aggregation and human promyelocytic leukemia HL60 cells oxidative burst. In dendritic cells, Tempol inhibited LPS-induced production of TNF-α, IL-6, and IL-12p70, downregulated expression of co-stimulatory molecules, and prevented antigen-dependent lymphocyte proliferation. Notably, Tempol (20 mg/kg) partially increased the survival of mice with CM. Mechanistically, treated mice had lowered plasma levels of MCP-1, suggesting that Tempol downmodulates EC function and vascular inflammation. Tempol also diminished blood brain barrier permeability associated with CM when started at day 4 post infection but not at day 1, suggesting that ROS production is tightly regulated. Other antioxidants—such as α-phenyl N-tertiary-butyl nitrone (PBN; a spin trap), MnTe-2-PyP and MnTBAP (Mn-phorphyrin), Mitoquinone (MitoQ) and Mitotempo (mitochondrial antioxidants), M30 (an iron chelator), and epigallocatechin gallate (EGCG; polyphenol from green tea) did not improve survival. By contrast, these compounds (except PBN) inhibited Plasmodium falciparum growth in culture with different IC50s. Knockout mice for SOD1 or phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (gp91phox–/–) or mice treated with inhibitors of SOD (diethyldithiocarbamate) or NADPH oxidase (diphenyleneiodonium) did not show protection or exacerbation for CM. Conclusion Results with Tempol suggest that intracellular ROS contribute, in part, to CM pathogenesis. Therapeutic targeting of intracellular ROS in CM is discussed.
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Affiliation(s)
- Ivo M. B. Francischetti
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
- * E-mail: (IMBF); (MW)
| | - Emile Gordon
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Bruna Bizzarro
- Laboratory of Experimental Immunology, Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Nidhi Gera
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Bruno B. Andrade
- Laboratory of Parasitic Diseases, NIAID/NIH, Bethesda, Maryland, United States of America
| | - Fabiano Oliveira
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Dongying Ma
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Teresa C. F. Assumpção
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - José M. C. Ribeiro
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Mirna Pena
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Ababacar Diouf
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Samuel E. Moretz
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Carole A. Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Hans C. Ackerman
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Susan K. Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
| | - Anderson Sá-Nunes
- Laboratory of Experimental Immunology, Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Michael Waisberg
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America
- University of Virginia, Department of Pathology, Charlottesville, Virginia, United States of America
- * E-mail: (IMBF); (MW)
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Jianjun Yang, Zhang R, Lu G, Shen Y, Peng L, Zhu C, Cui M, Wang W, Arnaboldi P, Tang M, Gupta M, Qi CF, Jayaraman P, Zhu H, Jiang B, Chen SH, He JC, Ting AT, Zhou MM, Kuchroo VK, Morse HC, Ozato K, Sikora AG, Xiong H. T cell–derived inducible nitric oxide synthase switches off Th17 cell differentiation. ACTA ACUST UNITED AC 2013; 210:1447-62. [PMID: 23797094 PMCID: PMC3698516 DOI: 10.1084/jem.20122494] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nitric oxide derived from iNOS in activated T cells negatively regulates Th17 cell differentiation. RORγt is necessary for the generation of TH17 cells but the molecular mechanisms for the regulation of TH17 cells are still not fully understood. We show that activation of CD4+ T cells results in the expression of inducible nitric oxide synthase (iNOS). iNOS-deficient mice displayed enhanced TH17 cell differentiation but without major effects on either TH1 or TH2 cell lineages, whereas endothelial NOS (eNOS) or neuronal NOS (nNOS) mutant mice showed comparable TH17 cell differentiation compared with wild-type control mice. The addition of N6-(1-iminoethyl)-l-lysine dihydrochloride (L-NIL), the iNOS inhibitor, significantly enhanced TH17 cell differentiation, and S-nitroso-N-acetylpenicillamine (SNAP), the NO donor, dose-dependently reduced the percentage of IL-17–producing CD4+ T cells. NO mediates nitration of tyrosine residues in RORγt, leading to the suppression of RORγt-induced IL-17 promoter activation, indicating that NO regulates IL-17 expression at the transcriptional level. Finally, studies of an experimental model of colitis showed that iNOS deficiency results in more severe inflammation with an enhanced TH17 phenotype. These results suggest that NO derived from iNOS in activated T cells plays a negative role in the regulation of TH17 cell differentiation and highlight the importance of intrinsic programs for the control of TH17 immune responses.
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Affiliation(s)
- Jianjun Yang
- Department of Medicine, Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
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Qi CF, Zhang R, Sun J, Li Z, Shin DM, Wang H, Kovalchuk AL, Sakai T, Xiong H, Kon N, Gu W, Morse HC. Homeostatic defects in B cells deficient in the E3 ubiquitin ligase ARF-BP1 are restored by enhanced expression of MYC. Leuk Res 2013; 37:1680-9. [PMID: 24199708 DOI: 10.1016/j.leukres.2013.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 08/12/2013] [Revised: 09/10/2013] [Accepted: 09/12/2013] [Indexed: 01/09/2023]
Abstract
The E3 ligase ARF-BP1 governs the balance of life and death decisions by directing the degradation of p53 and enhancing the transcriptional activity of MYC. We find B cells selectively deficient in ARF-BP1 have many defects in developing and mature B cells associated with increased expression of p53 and reduced expression of Myc. Overexpression of Myc results in suppression of p53 and complete reversal of defects induced by ARF-BP1 deficiency. These findings indicate that the dynamic balance between MYC and p53 required for normal B cell maturation and function is finely tuned and critically dependent on the activities of ARF-BP1.
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Affiliation(s)
- Chen-Feng Qi
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States.
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Saloustros E, Salpea P, Gugglioti L, Tsang K, Horvath A, Nesterova M, Qi CF, Morse HC, Stratakis CA. Abstract 3854: Novel hematopoietic neoplasms in prkar2a- deficient mice. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-3854] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Histiocytic sarcoma (HS) is an aggressive hematological neoplasm that responds poorly to therapy. The molecular etiology and pathology of this disease remain unclear, hampering the development of an effective therapy. Therefore, a need for more, and more realistic, animal models remains. Lymphoproliferative disorders have been reported in mice deficient for the prkar1a gene coding for the regulatory subunit type 1A of protein kinase A (PKA), but nothing is known about the role of type II PKA regulatory subunits in hematologic malignancies.
Methods: Mice deficient for the Prkar1a and Prkar2a alleles were previously reported (Kirschner et al, 2005 και Burton et al, 1997) and were kept on a mixed genetic background (C57BL/129Sv). Mice were crossed to create prkar2a+/- and prkar2a-/-. Mice were phenotyped at the ages of 3-6-9-12-18 months or when they exhibited signs of advanced disease. Tissues were collected for histological and molecular analysis.
Results: Unexpectedly, mice deficient for the prkar2a allele(s) developed lymphomas, with significant higher incidence compared to the prkar1a+/- mice [8/13 (61.5%) of the prkar2a+/- and 5/8 (62.5%) of the prkar2a-/- vs. 3/21(14.2%) of the prkar1a+/-, Fisher's exact test p=0.02]. Histology studies of sections stained with H&E revealed a variety of pathologic changes in lymphoid and non-lymphoid tissues. Lesions characteristic of histiocytic sarcoma (HS) were found in spleen and abdominal lymph nodes, sometimes associated with leukemic infiltrates in lung and bone marrow (BM). Abnormal megakaryopoiesis in spleen and BM was associated with cells actively phagocytosing red cells, others with a pseudo Gaucher-like appearance and increased immature forms. Erythropoiesis was reduced in BM and spleen. Vascular thrombi were associated with schistocytosis. Accumulations of mostly mature plasma cells and some plasmablasts were present in the splenic red pulp together with large, active germinal centers. Cells with characteristics of diffuse large B cell lymphoma often occupied expanded splenic follicles and lymph nodes. Kidneys exhibited degenerative changes in glomeruli and tubules. Median age at presentation was 18 months (range 16-25 months). FACS analysis of BM cells revealed a decrease in late pro-B cells in the prkar2a deficient mice compared to the wild-type, indicating a developmental block at this stage of early B cell differentiation. Interestingly, Southern blot analysis of these B cell lymphomas showed that in most cases they were monoclonal with either one or both IgH alleles rearranged.
Conclusions: Our data indicate that PRKAR2a may be involved in the development of malignant lesions of the hematologic lineage. The presented mouse model can be used to gain insights into the molecular and cellular origins of this rare neoplasm and provide a preclinical model in which to test novel therapeutic strategies.
Citation Format: Emmanouil Saloustros, Paraskevi Salpea, Lina Gugglioti, Kittman Tsang, Anelia Horvath, Maria Nesterova, Chen-Feng Qi, Herbert C. Morse III, Constantine A. Stratakis. Novel hematopoietic neoplasms in prkar2a- deficient mice. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3854. doi:10.1158/1538-7445.AM2013-3854
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Affiliation(s)
| | | | - Lina Gugglioti
- 1Section on Endocrinology and Genetics, NICHD-NIH, Bethesda, MD
| | - Kittman Tsang
- 1Section on Endocrinology and Genetics, NICHD-NIH, Bethesda, MD
| | - Anelia Horvath
- 1Section on Endocrinology and Genetics, NICHD-NIH, Bethesda, MD
| | - Maria Nesterova
- 1Section on Endocrinology and Genetics, NICHD-NIH, Bethesda, MD
| | - Chen-Feng Qi
- 2Laboratory of Immunogenetics, NIAID-NIH, Bethesda, MD
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Qi CF, Kim YS, Xiang S, Abdullaev Z, Torrey TA, Janz S, Kovalchuk AL, Sun J, Chen D, Cho WC, Gu W, Morse HC. Characterization of ARF-BP1/HUWE1 interactions with CTCF, MYC, ARF and p53 in MYC-driven B cell neoplasms. Int J Mol Sci 2012; 13:6204-6219. [PMID: 22754359 PMCID: PMC3382761 DOI: 10.3390/ijms13056204] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 04/24/2012] [Accepted: 05/09/2012] [Indexed: 01/09/2023] Open
Abstract
Transcriptional activation of MYC is a hallmark of many B cell lineage neoplasms. MYC provides a constitutive proliferative signal but can also initiate ARF-dependent activation of p53 and apoptosis. The E3 ubiquitin ligase, ARF-BP1, encoded by HUWE1, modulates the activity of both the MYC and the ARF-p53 signaling pathways, prompting us to determine if it is involved in the pathogenesis of MYC-driven B cell lymphomas. ARF-BP1 was expressed at high levels in cell lines from lymphomas with either wild type or mutated p53 but not in ARF-deficient cells. Downregulation of ARF-BP1 resulted in elevated steady state levels of p53, growth arrest and apoptosis. Co-immunoprecipitation studies identified a multiprotein complex comprised of ARF-BP1, ARF, p53, MYC and the multifunctional DNA-binding factor, CTCF, which is involved in the transcriptional regulation of MYC, p53 and ARF. ARF-BP1 bound and ubiquitylated CTCF leading to its proteasomal degradation. ARF-BP1 and CTCF thus appear to be key cofactors linking the MYC proliferative and p53-ARF apoptotic pathways. In addition, ARF-BP1 could be a therapeutic target for MYC-driven B lineage neoplasms, even if p53 is inactive, with inhibition reducing the transcriptional activity of MYC for its target genes and stabilizing the apoptosis-promoting activities of p53.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
- Authors to whom correspondence should be addressed; E-Mails: (C.-F.Q.); (H.C.M.); Tel.: +1-301-402-2698 (C.-F.Q.); +1-301-496-6379 (H.C.M.); Fax: +1-301-402-0077 (H.C.M.; C.-F.Q.)
| | - Yong-Soo Kim
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
| | - Shao Xiang
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
- Taussig Cancer Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Ziedulla Abdullaev
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
| | - Ted A. Torrey
- Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; E-Mail:
| | - Siegfried Janz
- Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; E-Mail:
| | - Alexander L. Kovalchuk
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
| | - Jiafang Sun
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
| | - Delin Chen
- Institute for Cancer Genetics, and Department of Pathology and Cell Biology, College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA; E-Mails: (D.C.); (W.G.)
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China; E-Mail:
| | - Wei Gu
- Institute for Cancer Genetics, and Department of Pathology and Cell Biology, College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA; E-Mails: (D.C.); (W.G.)
| | - Herbert C. Morse
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA; E-Mails: (Y.-S.K.); (S.X.); (Z.A.); (A.L.K.); (J.S.)
- Authors to whom correspondence should be addressed; E-Mails: (C.-F.Q.); (H.C.M.); Tel.: +1-301-402-2698 (C.-F.Q.); +1-301-496-6379 (H.C.M.); Fax: +1-301-402-0077 (H.C.M.; C.-F.Q.)
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Feng J, Wang H, Shin DM, Masiuk M, Qi CF, Morse HC. IFN regulatory factor 8 restricts the size of the marginal zone and follicular B cell pools. J Immunol 2010; 186:1458-66. [PMID: 21178004 DOI: 10.4049/jimmunol.1001950] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [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
Transcriptional control of marginal zone (MZ) and follicular (FO) B cell development remains incompletely understood. The transcription factor, IFN regulatory factor (IRF)8, is known to play important roles in the differentiation of early B cells. In this article, we demonstrate that IRF8 is also required for normal development of MZ and FO B cells. Mice with a conventional knockout of Irf8 (IRF8(-/-)) or a point mutation in the IRF association domain of IRF8 had increased numbers of MZ B cells. To determine the B cell-intrinsic effects of IRF8 deficiency, we generated mice with a conditional allele of Irf8 crossed with CD19-Cre mice (designated IRF8-conditional knockout [CKO]). These mice had enlarged MZ and increased numbers of MZ and FO B cells compared with controls. The FO B cells of CKO mice exhibited reduced expression of CD23 and moderately increased expression of CD21. Gene-expression profiling showed that increased B cell production in IRF8-CKO mice was associated with changes in expression of genes involved in regulation of transcription, signaling, and inflammation. Functional studies showed that IRF8-CKO mice generated normal Ab responses to T-independent and T-dependent Ags. Thus, IRF8 controls the expansion and maturation of MZ and FO B cells but has little effect on B cell function.
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Affiliation(s)
- Jianxun Feng
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA
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Qi CF, Li Z, Raffeld M, Wang H, Kovalchuk AL, Morse HC. Differential expression of IRF8 in subsets of macrophages and dendritic cells and effects of IRF8 deficiency on splenic B cell and macrophage compartments. Immunol Res 2010; 45:62-74. [PMID: 18663414 DOI: 10.1007/s12026-008-8032-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
IRF8, a transcription factor restricted primarily to hematopoietic cells, is known to influence the differentiation and function of dendritic cells (DC), macrophages, granulocytes and B cells. In human tonsil, IRF8 is expressed at high levels by intrafollicular macrophages and DC, but at much lower levels by tingible body macrophages in germinal centers (GCs) and little, if at all, by follicular DC. Spleens of IRF8-deficient mice had reduced numbers of white pulp follicles and GCs that were irregular in shape. The frequency of follicular B cells was significantly reduced while the population of marginal zone (MZ) B cells was increased. In addition, MZ macrophages were reduced in number and abnormally distributed, while metallophilic macrophages were normal. These findings demonstrate differential requirements for IRF8 among distinct subsets of B cells, DC, and macrophages.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 5640 Fishers Lane, Twinbrook I, Room 1528, Rockville, MD 20852, USA.
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Qi CF, Shin DM, Li Z, Wang H, Feng J, Hartley JW, Fredrickson TN, Kovalchuk AL, Morse HC. Anaplastic plasmacytomas: relationships to normal memory B cells and plasma cell neoplasms of immunodeficient and autoimmune mice. J Pathol 2010; 221:106-16. [PMID: 20217872 DOI: 10.1002/path.2692] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Anaplastic plasmacytomas (APCTs) from NFS.V(+) congenic mice and pristane-induced plasmacytic PCTs from BALB/c mice were previously shown to be histologically and molecularly distinct subsets of plasma cell neoplasms (PCNs). Here we extended these comparisons, contrasting primary APCTs and PCTs by gene expression profiling in relation to the expression profiles of normal naïve, germinal centre, and memory B cells and plasma cells. We also sequenced immunoglobulin genes from APCT and APCT-derived cell lines and defined surface phenotypes and chromosomal features of the cell lines by flow cytometry and by spectral karyotyping and fluorescence in situ hybridization. The results indicate that APCTs share many features with normal memory cells and the plasma cell-related neoplasms (PLs) of FASL-deficient mice, suggesting that APCTs and PLs are related and that both derive from memory B cells. Published in 2010 by John Wiley & Sons, Ltd.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, USA
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Wang H, Feng J, Qi CF, Li Z, Morse HC, Clarke SH. Transitional B Cells Lose Their Ability to Receptor Edit but Retain Their Potential for Positive and Negative Selection. J Immunol 2007; 179:7544-52. [DOI: 10.4049/jimmunol.179.11.7544] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kovalchuk AL, duBois W, Mushinski E, McNeil NE, Hirt C, Qi CF, Li Z, Janz S, Honjo T, Muramatsu M, Ried T, Behrens T, Potter M. AID-deficient Bcl-xL transgenic mice develop delayed atypical plasma cell tumors with unusual Ig/Myc chromosomal rearrangements. ACTA ACUST UNITED AC 2007; 204:2989-3001. [PMID: 17998390 PMCID: PMC2118515 DOI: 10.1084/jem.20070882] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Activation-induced cytidine deaminase (AID) is required for immunoglobulin (Ig) class switch recombination and somatic hypermutation, and has also been implicated in translocations between Ig switch regions and c-Myc in plasma cell tumors in mice. We asked if AID is required for accelerated tumor development in pristane-treated Bcl-xL transgenic BALB/c mice deficient in AID (pBxAicda−/−). pBxAicda−/− mice developed tumors with a lower frequency (24 vs. 62%) and a longer mean latency (108 vs. 36 d) than AID-sufficient mice. The tumors appeared in oil granuloma tissue and did not form ascites. By interphase fluorescence in situ hybridization, six out of nine pBxAicda−/− primary tumors had T(12;15) and one had T(6;15) chromosomal translocations. Two tumors were transplantable and established as stable cell lines. Molecular and cytogenetic analyses showed that one had an unusual unbalanced T(12;15) translocation, with IgH Cμ and Pvt-1 oriented head to tail at the breakpoint, resulting in an elevated expression of c-Myc. In contrast, the second was T(12;15) negative, but had an elevated N-Myc expression caused by a paracentric inversion of chromosome 12. Thus, novel mechanisms juxtapose Ig and Myc-family genes in AID-deficient plasma cell tumors.
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Affiliation(s)
- Alexander L Kovalchuk
- Laboratory of Cancer Biology and Genetics, Cancer Genomics Section, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Qi CF, Zhou JX, Lee CH, Naghashfar Z, Xiang S, Kovalchuk AL, Fredrickson TN, Hartley JW, Roopenian DC, Davidson WF, Janz S, Morse HC. Anaplastic, plasmablastic, and plasmacytic plasmacytomas of mice: relationships to human plasma cell neoplasms and late-stage differentiation of normal B cells. Cancer Res 2007; 67:2439-47. [PMID: 17363561 DOI: 10.1158/0008-5472.can-06-1561] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We have compared histologic features and gene expression profiles of newly identified plasmacytomas from NFS.V(+) congenic mice with plasmacytomas of IL6 transgenic, Fasl mutant, and SJL-beta2M(-/-) mice. NFS.V(+) tumors comprised an overlapping morphologic spectrum of high-grade/anaplastic, intermediate-grade/plasmablastic, and low-grade/plasmacytic cases with similarities to subsets of human multiple myeloma and plasmacytoma. Microarray and immunohistochemical analyses of genes expressed by the most prevalent tumors, plasmablastic plasmacytomas, showed them to be most closely related to immunoblastic lymphomas, less so to plasmacytomas of Fasl mutant and SJL mice, and least to plasmacytic plasmacytomas of IL6 transgenic mice. Plasmablastic tumors seemed to develop in an inflammatory environment associated with gene signatures of T cells, natural killer cells, and macrophages not seen with plasmacytic plasmacytomas. Plasmablastic plasmacytomas from NFS.V(+) and SJL-beta2M(-/-) mice did not have structural alterations in Myc or T(12;15) translocations and did not express Myc at high levels, regular features of transgenic and pristane-induced plasmacytomas. These findings imply that, as for human multiple myeloma, Myc-independent routes of transformation contribute to the pathogenesis of these tumors. These findings suggest that plasma cell neoplasms of mice and humans exhibit similar degrees of complexity. Mouse plasmacytomas, previously considered to be homogeneous, may thus be as diverse as their human counterparts with respect to oncogenic mechanisms of plasma cell transformation. Selecting specific types of mouse plasmacytomas that relate most closely to subtypes of human multiple myeloma may provide new opportunities for preclinical testing of drugs for treatment of the human disease.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Cancer Institute, NIH, Rockville, Maryland 20852, USA
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Lee CH, Melchers M, Wang H, Torrey TA, Slota R, Qi CF, Kim JY, Lugar P, Kong HJ, Farrington L, van der Zouwen B, Zhou JX, Lougaris V, Lipsky PE, Grammer AC, Morse HC. Regulation of the germinal center gene program by interferon (IFN) regulatory factor 8/IFN consensus sequence-binding protein. J Exp Med 2006; 203:63-72. [PMID: 16380510 PMCID: PMC2118063 DOI: 10.1084/jem.20051450] [Citation(s) in RCA: 141] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2005] [Accepted: 11/21/2005] [Indexed: 12/24/2022] Open
Abstract
Interferon (IFN) consensus sequence-binding protein/IFN regulatory factor 8 (IRF8) is a transcription factor that regulates the differentiation and function of macrophages, granulocytes, and dendritic cells through activation or repression of target genes. Although IRF8 is also expressed in lymphocytes, its roles in B cell and T cell maturation or function are ill defined, and few transcriptional targets are known. Gene expression profiling of human tonsillar B cells and mouse B cell lymphomas showed that IRF8 transcripts were expressed at highest levels in centroblasts, either from secondary lymphoid tissue or transformed cells. In addition, staining for IRF8 was most intense in tonsillar germinal center (GC) dark-zone centroblasts. To discover B cell genes regulated by IRF8, we transfected purified primary tonsillar B cells with enhanced green fluorescent protein-tagged IRF8, generated small interfering RNA knockdowns of IRF8 expression in a mouse B cell lymphoma cell line, and examined the effects of a null mutation of IRF8 on B cells. Each approach identified activation-induced cytidine deaminase (AICDA) and BCL6 as targets of transcriptional activation. Chromatin immunoprecipitation studies demonstrated in vivo occupancy of 5' sequences of both genes by IRF8 protein. These results suggest previously unappreciated roles for IRF8 in the transcriptional regulation of B cell GC reactions that include direct regulation of AICDA and BCL6.
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Affiliation(s)
- Chang Hoon Lee
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Qi CF, Xiang S, Shin MS, Hao X, Lee CH, Zhou JX, Torrey TA, Hartley JW, Fredrickson TN, Morse HC. Expression of the cyclin-dependent kinase inhibitor p27 and its deregulation in mouse B cell lymphomas. Leuk Res 2005; 30:153-63. [PMID: 16122798 DOI: 10.1016/j.leukres.2005.06.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2004] [Accepted: 06/13/2005] [Indexed: 01/04/2023]
Abstract
CDKN1B (p27) regulates cell-cycle progression at the G1-S transition by suppressing the cyclin E/CDK2 kinase complex. In normal lymphocytes and most human B cell non-Hodgkin lymphomas (NHL), there is an inverse correlation between proliferative activity and expression of p27; however, a subset of NHL with high mitotic indices expresses p27, which is inactive due to sequestration in nuclear protein complexes or due to cytoplasmic retention. Our studies of mouse B cell NHL also identified cases with high proliferative activity and high levels of p27 at a surprisingly high frequency. Here, p27 was complexed with D-type cyclins 1 and 3 and with the COPS9 protein, JAB1. In addition, we found cytoplasmic sequestration following phosphorylation by activated AKT.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, Twinbrook I, Room 1421, National Institutes of Health, Rockville, MD, USA
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Ozaki K, Spolski R, Ettinger R, Kim HP, Wang G, Qi CF, Hwu P, Shaffer DJ, Akilesh S, Roopenian DC, Morse HC, Lipsky PE, Leonard WJ. Regulation of B Cell Differentiation and Plasma Cell Generation by IL-21, a Novel Inducer of Blimp-1 and Bcl-6. J Immunol 2004; 173:5361-71. [PMID: 15494482 DOI: 10.4049/jimmunol.173.9.5361] [Citation(s) in RCA: 501] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
IL-21 is a type I cytokine whose receptor is expressed on T, B, and NK cells. Within the B cell lineage, IL-21 regulates IgG1 production and cooperates with IL-4 for the production of multiple Ab classes in vivo. Using IL-21-transgenic mice and hydrodynamics-based gene delivery of IL-21 plasmid DNA into wild-type mice as well as in vitro studies, we demonstrate that although IL-21 induces death of resting B cells, it promotes differentiation of B cells into postswitch and plasma cells. Thus, IL-21 differentially influences B cell fate depending on the signaling context, explaining how IL-21 can be proapoptotic for B cells in vitro yet critical for Ag-specific Ig production in vivo. Moreover, we demonstrate that IL-21 unexpectedly induces expression of both Blimp-1 and Bcl-6, indicating mechanisms as to how IL-21 can serve as a complex regulator of B cell maturation and terminal differentiation. Finally, BXSB-Yaa mice, which develop a systemic lupus erythematosus-like disease, have greatly elevated IL-21, suggesting a role for IL-21 in the development of autoimmune disease.
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Affiliation(s)
- Katsutoshi Ozaki
- Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
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Qi CF, Martensson A, Mattioli M, Dalla-Favera R, Lobanenkov VV, Morse HC. CTCF functions as a critical regulator of cell-cycle arrest and death after ligation of the B cell receptor on immature B cells. Proc Natl Acad Sci U S A 2003; 100:633-8. [PMID: 12524457 PMCID: PMC141048 DOI: 10.1073/pnas.0237127100] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2002] [Accepted: 11/22/2002] [Indexed: 11/18/2022] Open
Abstract
The WEHI 231 B cell lymphoma is used as a model of self-tolerance by clonal deletion because B cell receptor (BCR) ligation results in apoptosis. Two critical events precede cell death: an early rise and fall in expression of MYC and cell-cycle arrest associated with enhanced expression of p21, p27, and p53. CTCF is a transcription factor identified as a repressor of MYC recently shown to cause cell growth inhibition. The present studies demonstrate that BCR ligation of WEHI 231 as well as of normal immature B cells greatly increased expression of CTCF in association with down-regulation of MYC followed by growth arrest and cell death. Conditional expression of CTCF in WEHI 231 mimicked BCR ligation with activated cells showing repressed expression of MYC, enhanced expression of p27, p21, p53, and p19(ARF), and inhibition of cell growth and induction of apoptosis. In keeping with a central role for CTCF in control of B cell death, conditional expression of a CTCF antisense construct in WEHI 231 resulted in inhibition of p27, p21, p53, and p19(ARF) in association with enhanced expression of MYC. Activation of the endogenous CTCF locus by BCR ligation was also mimicked by three other routes to apoptotic death in WEHI 231: inhibition of the phosphoinositide 3-kinase or mTORFRAP signaling cascades and treatment with transforming growth factor (TGF)-beta. Rapid activation of CTCF by BCR ligation or treatment with TGF-beta was suppressed by ligation of CD40. These results demonstrate that CTCF is a common determinant to different pathways of death signaling in immature B cells.
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Affiliation(s)
- Chen-Feng Qi
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Morse HC, McCarty T, Qi CF, Torrey TA, Naghashfar Z, Chattopadhyay SK, Fredrickson TN, Hartley JW. B lymphoid neoplasms of mice: characteristics of naturally occurring and engineered diseases and relationships to human disorders. Adv Immunol 2003; 81:97-121. [PMID: 14711054 DOI: 10.1016/s0065-2776(03)81003-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Herbert C Morse
- Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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Ozaki K, Spolski R, Feng CG, Qi CF, Cheng J, Sher A, Morse HC, Liu C, Schwartzberg PL, Leonard WJ. A critical role for IL-21 in regulating immunoglobulin production. Science 2002; 298:1630-4. [PMID: 12446913 DOI: 10.1126/science.1077002] [Citation(s) in RCA: 755] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The cytokine interleukin-21 (IL-21) is closely related to IL-2 and IL-15, and their receptors all share the common cytokine receptor gamma chain, gammac, which is mutated in humans with X-linked severe combined immunodeficiency disease (XSCID). We demonstrate that, although mice deficient in the receptor for IL-21 (IL-21R) have normal lymphoid development, after immunization, these animals have higher production of the immunoglobulin IgE, but lower IgG1, than wild-type animals. Mice lacking both IL-4 and IL-21R exhibited a significantly more pronounced phenotype, with dysgammaglobulinemia, characterized primarily by a severely impaired IgG response. Thus, IL-21 has a significant influence on the regulation of B cell function in vivo and cooperates with IL-4. This suggests that these gammac-dependent cytokines may be those whose inactivation is primarily responsible for the B cell defect in humans with XSCID.
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Affiliation(s)
- Katsutoshi Ozaki
- Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1674, USA
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