1
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Thomas AL, Lehn MA, Janssen EM, Hildeman DA, Chougnet CA. Naturally-aged microglia exhibit phagocytic dysfunction accompanied by gene expression changes reflective of underlying neurologic disease. Sci Rep 2022; 12:19471. [PMID: 36376530 PMCID: PMC9663419 DOI: 10.1038/s41598-022-21920-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
Age-associated microglial dysfunction contributes to the accumulation of amyloid-β (Aβ) plaques in Alzheimer's disease. Although several studies have shown age-related declines in the phagocytic capacity of myeloid cells, relatively few have examined phagocytosis of normally aged microglia. Furthermore, much of the existing data on aging microglial function have been generated in accelerated genetic models of Alzheimer's disease. Here we found that naturally aged microglia phagocytosed less Aβ over time. To gain a better understanding of such dysfunction, we assessed differences in gene expression between young and old microglia that either did or did not phagocytose Aβ. Young microglia had both phagocytic and neuronal maintenance signatures indicative of normal microglial responses, whereas, old microglia, regardless of phagocytic status, exhibit signs of broad dysfunction reflective of underlying neurologic disease states. We also found downregulation of many phagocytic receptors on old microglia, including TREM2, an Aβ phagocytic receptor. TREM2 protein expression was diminished in old microglia and loss of TREM2+ microglia was correlated with impaired Aβ uptake, suggesting a mechanism for phagocytic dysfunction in old microglia. Combined, our work reveals that normally aged microglia have broad changes in gene expression, including defects in Aβ phagocytosis that likely underlies the progression to neurologic disease.
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Affiliation(s)
- Alyssa L Thomas
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology of Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Maria A Lehn
- Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Department of Internal Medicine, Division of Hematology/Oncology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Edith M Janssen
- Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Janssen Research and Development, Spring House, PA, 19477, USA
| | - David A Hildeman
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
- Division of Immunobiology of Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Claire A Chougnet
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
- Division of Immunobiology of Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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2
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Gawali VS, Chimote AA, Newton HS, Feria-Garzón MG, Chirra M, Janssen EM, Wise-Draper TM, Conforti L. Immune Checkpoint Inhibitors Regulate K + Channel Activity in Cytotoxic T Lymphocytes of Head and Neck Cancer Patients. Front Pharmacol 2021; 12:742862. [PMID: 34512366 PMCID: PMC8429813 DOI: 10.3389/fphar.2021.742862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 08/16/2021] [Indexed: 12/27/2022] Open
Abstract
Programmed death receptor-1 (PD-1) and its ligand (PD-L1) interaction negatively regulates T cell function in head and neck squamous cell carcinoma (HNSCC). Overexpression of PD-1 reduces intracellular Ca2+ fluxes, and thereby T cell effector functions. In HNSCC patients, PD-1 blockade increases KCa3.1 and Kv1.3 activity along with Ca2+ signaling and mobility in CD8+ peripheral blood T cells (PBTs). The mechanism by which PD-L1/PD-1 interaction regulates ion channel function is not known. We investigated the effects of blocking PD-1 and PD-L1 on ion channel functions and intracellular Ca2+ signaling in CD8+ PBTs of HNSCC patients and healthy donors (HDs) using single-cell electrophysiology and live microscopy. Anti-PD-1 and anti-PD-L1 antibodies increase KCa3.1 and Kv1.3 function in CD8+ PBTs of HNSCC patients. Anti-PD-1 treatment increases Ca2+ fluxes in a subset of HSNCC patients. In CD8+ PBTs of HDs, exposure to PD-L1 reduces KCa3.1 activity and Ca2+ signaling, which were restored by anti-PD-1 treatment. The PD-L1-induced inhibition of KCa3.1 channels was rescued by the intracellular application of the PI3 kinase modulator phosphatidylinositol 3-phosphate (PI3P) in patch-clamp experiments. In HNSCC CD8+ PBTs, anti-PD-1 treatment did not affect the expression of KCa3.1, Kv1.3, Ca2+ release activated Ca2+ (CRAC) channels, and markers of cell activation (CD69) and exhaustion (LAG-3 and TIM-3). Our data show that immune checkpoint blockade improves T cell function by increasing KCa3.1 and Kv1.3 channel activity in HNSCC patients.
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Affiliation(s)
- Vaibhavkumar S Gawali
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
| | - Ameet A Chimote
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
| | - Hannah S Newton
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
| | - Manuel G Feria-Garzón
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
| | - Martina Chirra
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology, Janssen Research and Development, Spring House, PA, United States
| | - Trisha M Wise-Draper
- Department of Internal Medicine, Division of Hematology Oncology, University of Cincinnati, Cincinnati, OH, United States
| | - Laura Conforti
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati, Cincinnati, OH, United States
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3
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McKell MC, Crowther RR, Schmidt SM, Robillard MC, Cantrell R, Lehn MA, Janssen EM, Qualls JE. Promotion of Anti-Tuberculosis Macrophage Activity by L-Arginine in the Absence of Nitric Oxide. Front Immunol 2021; 12:653571. [PMID: 34054815 PMCID: PMC8160513 DOI: 10.3389/fimmu.2021.653571] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/26/2021] [Indexed: 12/31/2022] Open
Abstract
Macrophages are indispensable immune cells tasked at eliminating intracellular pathogens. Mycobacterium tuberculosis (Mtb), one of the most virulent intracellular bacterial pathogens known to man, infects and resides within macrophages. While macrophages can be provoked by extracellular stimuli to inhibit and kill Mtb bacilli, these host defense mechanisms can be blocked by limiting nutritional metabolites, such as amino acids. The amino acid L-arginine has been well described to enhance immune function, especially in the context of driving macrophage nitric oxide (NO) production in mice. In this study, we aimed to establish the necessity of L-arginine on anti-Mtb macrophage function independent of NO. Utilizing an in vitro system, we identified that macrophages relied on NO for only half of their L-arginine-mediated host defenses and this L-arginine-mediated defense in the absence of NO was associated with enhanced macrophage numbers and viability. Additionally, we observed macrophage glycolysis to be driven by both L-arginine and mechanistic target of rapamycin (mTOR), and inhibition of glycolysis or mTOR reduced macrophage control of Mtb as well as macrophage number and viability in the presence of L-arginine. Our data underscore L-arginine as an essential nutrient for macrophage function, not only by fueling anti-mycobacterial NO production, but also as a central regulator of macrophage metabolism and additional host defense mechanisms.
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Affiliation(s)
- Melanie C McKell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Rebecca R Crowther
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Stephanie M Schmidt
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Michelle C Robillard
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Rachel Cantrell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Maria A Lehn
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Edith M Janssen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Joseph E Qualls
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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4
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Balzarolo M, Engels S, de Jong AJ, Franke K, van den Berg TK, Gulen MF, Ablasser A, Janssen EM, van Steensel B, Wolkers MC. m6A methylation potentiates cytosolic dsDNA recognition in a sequence-specific manner. Open Biol 2021; 11:210030. [PMID: 33715389 PMCID: PMC8101014 DOI: 10.1098/rsob.210030] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Nucleic acid sensing through pattern recognition receptors is critical for immune
recognition of microbial infections. Microbial DNA is frequently methylated at
the N6 position of adenines (m6A), a modification that is rare in
mammalian host DNA. We show here how that m6A methylation of
5′-GATC-3′ motifs augments the immunogenicity of synthetic
double-stranded (ds)DNA in murine macrophages and dendritic cells. Transfection
with m6A-methylated DNA increased the expression of the activation markers CD69
and CD86, and of Ifnβ, iNos and
Cxcl10 mRNA. Similar to unmethylated cytosolic dsDNA,
recognition of m6A DNA occurs independently of TLR and RIG-I signalling, but
requires the two key mediators of cytosolic DNA sensing, STING and cGAS.
Intriguingly, the response to m6A DNA is sequence-specific. m6A is
immunostimulatory in some motifs, but immunosuppressive in others, a feature
that is conserved between mouse and human macrophages. In conclusion, epigenetic
alterations of DNA depend on the context of the sequence and are differentially
perceived by innate cells, a feature that could potentially be used for the
design of immune-modulating therapeutics.
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Affiliation(s)
- Melania Balzarolo
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Hematopoiesis, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Sander Engels
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Hematopoiesis, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Anja J de Jong
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Hematopoiesis, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Katka Franke
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Blood Cell Research, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Timo K van den Berg
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Blood Cell Research, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Muhammet F Gulen
- Global Health Institute, Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
| | - Andrea Ablasser
- Global Health Institute, Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
| | - Edith M Janssen
- Division of Molecular Immunology, Cincinnati Children's Hospital Research Foundation, University of Cincinnati College of Medicine, Cincinnati, USA
| | - Bas van Steensel
- Oncode Institute, Utrecht, The Netherlands.,Division of Gene Regulation, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Monika C Wolkers
- Sanquin Research, University of Amsterdam, Amsterdam, The Netherlands.,Department of Hematopoiesis, University of Amsterdam, Amsterdam, The Netherlands.,Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
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5
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Abstract
The infiltration of melanoma lesions by dendritic cells (DCs) has been suggested to play a tumorigenic role due to the capacity of DCs to induce tumor tolerance and promote angiogenesis as well as metastasis. However, it has also been shown that tumor-infiltrating DCs (TIDCs) induce antitumor responses and hence may be targeted in cost-effective therapeutic approaches to obtain patient-specific DCs that present relevant tumor antigens, without the need for ex vivo DC expansion or tumor antigen identification. Unfortunately, little is known about the composition, nature and function of TIDCs found in human melanoma. The development of mouse melanoma models has greatly contributed to the molecular understanding of melanoma immunology in mice, but many questions on TIDCs remain unanswered. Here, we discuss current knowledge about melanoma TIDCs in various mouse models with regard to their translational potential and clinical relevance.
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Affiliation(s)
- Jared S Klarquist
- Division of Cellular and Molecular Immunology; Cincinnati Children's Hospital Research Foundation; University of Cincinnati College of Medicine; Cincinnati, OH USA
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6
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Newton HS, Gawali VS, Chimote AA, Lehn MA, Palackdharry SM, Hinrichs BH, Jandarov R, Hildeman D, Janssen EM, Wise-Draper TM, Conforti L. PD1 blockade enhances K + channel activity, Ca 2+ signaling, and migratory ability in cytotoxic T lymphocytes of patients with head and neck cancer. J Immunother Cancer 2020; 8:e000844. [PMID: 33060146 PMCID: PMC7566435 DOI: 10.1136/jitc-2020-000844] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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] [Accepted: 09/10/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Immunotherapy has emerged as a promising treatment modality for head and neck squamous cell carcinoma (HNSCC). Pembrolizumab, an anti-programmed death 1 antibody, is an immunotherapy agent currently approved for metastatic HNSCC and curative intent clinical trials. Although clinical responses to pembrolizumab are promising, many patients fail to respond. However, it is well known that T cell cytotoxicity and chemotaxis are critically important in the elimination of HNSCC tumors. These functions depend on ion channel activity and downstream Ca2+ fluxing abilities, which are defective in patients with HNSCC. The purpose of this study was to elucidate the effects of pembrolizumab on potassium (K+) channel (KCa3.1 and Kv1.3) activity, Ca2+ fluxes, and chemotaxis in the cytotoxic T cells of patients with HNSCC and to determine their correlation with treatment response. METHODS Functional studies were conducted in CD8+ peripheral blood T cells (PBTs) and tumor infiltrating lymphocytes (TILs) from patients with HNSCC treated with pembrolizumab. Untreated patients with HNSCC were used as controls. The ion channel activity of CD8+ T cells was measured by patch-clamp electrophysiology; single-cell Ca2+ fluxing abilities were measured by live microscopy. Chemotaxis experiments were conducted in a three-dimensional collagen matrix. Pembrolizumab patients were stratified as responders or non-responders based on pathological response (percent of viable tumor remaining at resection; responders: ≤80% viable tumor; non-responders: >80% viable tumor). RESULTS Pembrolizumab increased K+ channel activity and Ca2+ fluxes in TILs independently of treatment response. However, in PBTs from responder patients there was an increased KCa3.1 activity immediately after pembrolizumab treatment that was accompanied by a characteristic increase in Kv1.3 and Ca2+ fluxes as compared with PBTs from non-responder patients. The effects on Kv1.3 and Ca2+ were prolonged and persisted after tumor resection. Chemotaxis was also improved in responder patients' PBTs. Unlike non-responders' PBTs, pembrolizumab increased their ability to chemotax in a tumor-like, adenosine-rich microenvironment immediately after treatment, and additionally they maintained an efficient chemotaxis after tumor resection. CONCLUSIONS Pembrolizumab enhanced K+ channel activity, Ca2+ fluxes and chemotaxis of CD8+ T cells in patients with HNSCC, with a unique pattern of response in responder patients that is conducive to the heightened functionality of their cytotoxic T cells.
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Affiliation(s)
- Hannah S Newton
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Vaibhavkumar S Gawali
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ameet A Chimote
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Maria A Lehn
- Department of Internal Medicine, Division of Hematology/Oncology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Sarah M Palackdharry
- Department of Internal Medicine, Division of Hematology/Oncology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Benjamin H Hinrichs
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Roman Jandarov
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - David Hildeman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Immunology, Janssen Research and Development, Spring House, Pennsylvania, USA
| | - Trisha M Wise-Draper
- Department of Internal Medicine, Division of Hematology/Oncology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Laura Conforti
- Department of Internal Medicine, Division of Nephrology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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7
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Sliz A, Locker KCS, Lampe K, Godarova A, Plas DR, Janssen EM, Jones H, Herr AB, Hoebe K. Gab3 is required for IL-2- and IL-15-induced NK cell expansion and limits trophoblast invasion during pregnancy. Sci Immunol 2020; 4:4/38/eaav3866. [PMID: 31375526 DOI: 10.1126/sciimmunol.aav3866] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 07/03/2019] [Indexed: 12/12/2022]
Abstract
The scaffolding protein Grb2-associated binding protein 3 (Gab3) is a member of the Gab family, whose functions have remained elusive. Here, we identify Gab3 as a key determinant of peripheral NK cell expansion. Loss of Gab3 resulted in impaired IL-2 and IL-15-induced NK cell priming and expansion due to a selective impairment in MAPK signaling but not STAT5 signaling. In vivo, we found that Gab3 is required for recognition and elimination of "missing-self" and tumor targets. Unexpectedly, our studies also revealed that Gab3 plays an important role during pregnancy. Gab3-deficient mice exhibited impaired uterine NK cell expansion associated with abnormal spiral artery remodeling and increased trophoblast invasion in the decidua basalis. This coincided with stillbirth, retained placenta, maternal hemorrhage, and undelivered fetoplacental units at term. Thus, Gab3 is a key component required for cytokine-mediated NK cell priming and expansion that is essential for antitumor responses and limits trophoblast cell invasion during pregnancy.
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Affiliation(s)
- Anna Sliz
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA.,Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA
| | - Kathryn C S Locker
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA.,Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA
| | - Kristin Lampe
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA.,Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA
| | - Alzbeta Godarova
- Biomedical Informatics Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA
| | - David R Plas
- Vontz Center for Molecular Studies, University of Cincinnati, Cincinnati, OH 45267, USA
| | | | - Helen Jones
- Division of General Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA
| | - Andrew B Herr
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA.,Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA.,Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45220, USA
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8
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Klarquist J, Cantrell R, Lehn MA, Lampe K, Hennies CM, Hoebe K, Janssen EM. Type I IFN Drives Experimental Systemic Lupus Erythematosus by Distinct Mechanisms in CD4 T Cells and B Cells. Immunohorizons 2020; 4:140-152. [PMID: 32161059 PMCID: PMC7294741 DOI: 10.4049/immunohorizons.2000005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 01/16/2020] [Accepted: 02/20/2020] [Indexed: 12/20/2022] Open
Abstract
Myriad studies have linked type I IFN to the pathogenesis of autoimmune diseases, including systemic lupus erythematosus (SLE). Although increased levels of type I IFN are found in patients with SLE, and IFN blockade ameliorates disease in many mouse models of lupus, its precise roles in driving SLE pathogenesis remain largely unknown. In this study, we dissected the effect of type I IFN sensing by CD4 T cells and B cells on the development of T follicular helper cells (TFH), germinal center (GC) B cells, plasmablasts, and antinuclear dsDNA IgG levels using the bm12 chronic graft-versus-host disease model of SLE-like disease. Type I IFN sensing by B cells decreased their threshold for BCR signaling and increased their expression of MHC class II, CD40, and Bcl-6, requirements for optimal GC B cell functions. In line with these data, ablation of type I IFN sensing in B cells significantly reduced the accumulation of GC B cells, plasmablasts, and autoantibodies. Ablation of type I IFN sensing in T cells significantly inhibited TFH expansion and subsequent B cell responses. In contrast to the effect in B cells, type I IFN did not promote proliferation in the T cells but protected them from NK cell-mediated killing. Consequently, ablation of either perforin or NK cells completely restored TFH expansion of IFNAR-/- TFH and, subsequently, restored the B cell responses. Together, our data provide evidence for novel roles of type I IFN and immunoregulatory NK cells in the context of sterile inflammation and SLE-like disease.
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Affiliation(s)
- Jared Klarquist
- Department of Immunology and Microbiology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045;
| | - Rachel Cantrell
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Maria A Lehn
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Kristin Lampe
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Cassandra M Hennies
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229; and
| | - Kasper Hoebe
- Janssen Research and Development, Johnson & Johnson, Spring House, PA 19477
| | - Edith M Janssen
- Janssen Research and Development, Johnson & Johnson, Spring House, PA 19477
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9
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Agresta L, Lehn M, Lampe K, Cantrell R, Hennies C, Szabo S, Wise-Draper T, Conforti L, Hoebe K, Janssen EM. CD244 represents a new therapeutic target in head and neck squamous cell carcinoma. J Immunother Cancer 2020; 8:e000245. [PMID: 32217758 PMCID: PMC7174077 DOI: 10.1136/jitc-2019-000245] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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] [Accepted: 02/02/2020] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Developing novel strategies to overcome the immunosuppressive tumor microenvironment is a critically important area of cancer therapy research. Here, we assess the therapeutic potential of CD244 (2B4/signaling lymphocyte activation molecule family 4), an immunoregulatory receptor found on a variety of immune cells, including exhausted CD8+ T cells, dendritic cells (DCs), and myeloid-derived suppressor cells (MDSCs). METHODS Using de-identified human tumor and blood samples from patients with head and neck squamous cell carcinoma (HNSCC) and HNSCC models in WT and CD244-/- mice, we assessed the therapeutic potential of CD244 using flow cytometry, RT-PCR, Luminex immunoassays and histopathological analyses. RESULTS Compared with healthy tissues, tumor infiltrating CD8+ T cells from HNSCC patients and a HNSCC mouse model showed significant increased expression of CD244 expression that correlated with PD1 expression. Moreover, CD244 was increased on intratumoral DC and MDSC and high CD244 expression correlated with PD-L1 expression and increased spontaneous expression of immune-suppressive mediators. In addition, CD244 activation inhibited production of proinflammatory cytokines in human DC in vitro. Importantly, CD244-/- mice showed significantly impaired tumor growth of HNSCC and interventional treatment of WT mice with anti-CD244 monoclonal antibody significantly impaired the growth of established HNSCC tumors and increased tumor-infiltrating CD8+ T cells. CONCLUSIONS Together these data suggest that CD244 contributes to the overall immune-suppressive environment and therefore has potential as a new immunotherapy target in the treatment of malignancies.
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Affiliation(s)
- Laura Agresta
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Maria Lehn
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, USA
| | - Kristin Lampe
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, USA
| | - Rachel Cantrell
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, USA
| | - Cassandra Hennies
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, USA
| | - Sara Szabo
- Division of Pathology & Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Trisha Wise-Draper
- Division of Hematology/Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Laura Conforti
- Department of Internal Medicine, Division of Nephrology and Hypertension, University of Cincinnati, Cincinnati, Ohio, USA
| | - Kasper Hoebe
- Immunology Discovery, Janssen Research and Development Spring House, Spring House, Pennsylvania, USA
| | - Edith M Janssen
- Immunology Discovery, Janssen Research and Development Spring House, Spring House, Pennsylvania, USA
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10
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Yang Y, Stang A, Schweickert PG, Lanman NA, Paul EN, Monia BP, Revenko AS, Palumbo JS, Mullins ES, Elzey BD, Janssen EM, Konieczny SF, Flick MJ. Thrombin Signaling Promotes Pancreatic Adenocarcinoma through PAR-1-Dependent Immune Evasion. Cancer Res 2019; 79:3417-3430. [PMID: 31048498 DOI: 10.1158/0008-5472.can-18-3206] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/11/2019] [Accepted: 04/29/2019] [Indexed: 12/22/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is associated with robust activity of the coagulation system. To determine mechanisms by which clotting factors influence PDAC tumor progression, we generated and characterized C57Bl/6-derived KPC (KRasG12D, TRP53R172H ) cell lines. Tissue factor (TF) and protease-activated receptor-1 (PAR-1) were highly expressed in primary KPC pancreatic lesions and KPC cell lines similar to expression profiles observed in biopsies of patients with PDAC. In allograft studies, tumor growth and metastatic potential were significantly diminished by depletion of TF or Par-1 in cancer cells or by genetic or pharmacologic reduction of the coagulation zymogen prothrombin in mice. Notably, PAR-1-deleted KPC cells (KPC-Par-1KO) failed to generate sizable tumors, a phenotype completely rescued by restoration of Par-1 expression. Expression profiling of KPC and KPC-Par-1KO cells indicated that thrombin-PAR-1 signaling significantly altered immune regulation pathways. Accordingly, KPC-Par-1KO cells failed to form tumors in immune-competent mice but displayed robust tumor growth comparable to that observed with control KPC cells in immune-compromised NSG mice. Immune cell depletion studies indicated that CD8 T cells, but not CD4 cells or natural killer cells, mediated elimination of KPC-Par-1KO tumor cells in C57Bl/6 mice. These results demonstrate that PDAC is driven by activation of the coagulation system through tumor cell-derived TF, circulating prothrombin, and tumor cell-derived PAR-1 and further indicate that one key mechanism of thrombin/PAR-1-mediated tumor growth is suppression of antitumor immunity in the tumor microenvironment. SIGNIFICANCE: The tissue factor-thrombin-PAR-1 signaling axis in tumor cells promotes PDAC growth and disease progression with one key mechanism being suppression of antitumor immunity in the microenvironment.
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Affiliation(s)
- Yi Yang
- Department of Biological Science and the Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | - Amanda Stang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - Patrick G Schweickert
- Department of Biological Science and the Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | - Nadia A Lanman
- Department of Biological Science and the Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | - Erin N Paul
- Department of Biological Science and the Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | - Brett P Monia
- Ionis Pharmaceuticals, Inc., Antisense Drug Discovery, Carlsbad, California
| | - Alexey S Revenko
- Ionis Pharmaceuticals, Inc., Antisense Drug Discovery, Carlsbad, California
| | - Joseph S Palumbo
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - Eric S Mullins
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - Bennett D Elzey
- Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - Stephen F Konieczny
- Department of Biological Science and the Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana.
| | - Matthew J Flick
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital, Cincinnati, Ohio.
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11
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Patterson AR, Bolcas P, Lampe K, Cantrell R, Ruff B, Lewkowich I, Hogan SP, Janssen EM, Bleesing J, Khurana Hershey GK, Hoebe K. Loss of GTPase of immunity-associated protein 5 (Gimap5) promotes pathogenic CD4 + T-cell development and allergic airway disease. J Allergy Clin Immunol 2019; 143:245-257.e6. [PMID: 30616774 PMCID: PMC6327968 DOI: 10.1016/j.jaci.2018.10.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 02/14/2018] [Revised: 09/14/2018] [Accepted: 10/07/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND GTPase of immunity-associated protein 5 (GIMAP5) is essential for lymphocyte homeostasis and survival. Recently, human GIMAP5 single nucleotide polymorphisms have been linked to an increased risk for asthma, whereas loss of Gimap5 in mice has been associated with severe CD4+ T cell-driven immune pathology. OBJECTIVE We sought to identify the molecular and cellular mechanisms by which Gimap5 deficiency predisposes to allergic airway disease. METHODS CD4+ T-cell polarization and development of pathogenic CD4+ T cells were assessed in Gimap5-deficient mice and a human patient with a GIMAP5 loss-of-function (LOF) mutation. House dust mite-induced airway inflammation was assessed by using a complete Gimap5 LOF (Gimap5sph/sph) and conditional Gimap5fl/flCd4Cre/ert2 mice. RESULTS GIMAP5 LOF mutations in both mice and human subjects are associated with spontaneous polarization toward pathogenic TH17 and TH2 cells in vivo. Mechanistic studies in vitro reveal that impairment of Gimap5-deficient TH cell differentiation is associated with increased DNA damage, particularly during TH1-polarizing conditions. DNA damage in Gimap5-deficient CD4+ T cells could be controlled by TGF-β, thereby promoting TH17 polarization. When challenged with house dust mite in vivo, Gimap5-deficient mice displayed an exacerbated asthma phenotype (inflammation and airway hyperresponsiveness), with increased development of TH2, TH17, and pathogenic TH17/TH2 cells. CONCLUSION Activation of Gimap5-deficient CD4+ T cells is associated with increased DNA damage and reduced survival that can be overcome by TGF-β. This leads to selective survival of pathogenic TH17 cells but also TH2 cells in human subjects and mice, ultimately promoting allergic airway disease.
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Affiliation(s)
- Andrew R Patterson
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Paige Bolcas
- Division of Asthma Research, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Kristin Lampe
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio
| | - Rachel Cantrell
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Immunology Graduate Program, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Brandy Ruff
- Division of Asthma Research, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio
| | - Ian Lewkowich
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Simon P Hogan
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jack Bleesing
- Division of Bone Marrow Transplantation & Immune Deficiency, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio
| | - Gurjit K Khurana Hershey
- Division of Asthma Research, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Kasper Hoebe
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.
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12
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Agresta L, Hoebe KHN, Janssen EM. The Emerging Role of CD244 Signaling in Immune Cells of the Tumor Microenvironment. Front Immunol 2018; 9:2809. [PMID: 30546369 PMCID: PMC6279924 DOI: 10.3389/fimmu.2018.02809] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [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: 07/13/2018] [Accepted: 11/14/2018] [Indexed: 12/13/2022] Open
Abstract
In cancer, immune exhaustion contributes to the immunosuppressive tumor microenvironment. Exhausted immune cells demonstrate poor effector function and sustained expression of certain immunomodulatory receptors, which can be therapeutically targeted. CD244 is a Signaling Lymphocyte Activation Molecule (SLAM) family immunoregulatory receptor found on many immune cell types—including NK cells, a subset of T cells, DCs, and MDSCs—that represents a potential therapeutic target. Here, we discuss the role of CD244 in tumor-mediated immune cell regulation.
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Affiliation(s)
- Laura Agresta
- Cincinnati Children's Hospital Medical Center, Cancer and Blood Diseases Institute, Cincinnati, OH, United States
| | - Kasper H N Hoebe
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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13
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Abstract
Cancer and the immune system are intimately related. Much of the bulk of tumors is comprised of stromal leukocytes with immune functions, which serve to both promote and inhibit tumor growth, invasion and metastasis. The T lymphocytes of the adaptive immune system are essential for tumor immunity, and these T cells are generated by cross-priming against tumor associated antigens. Dendritic cells (DCs) are essential in this process, serving as the cellular link between innate and adaptive immunity. As a prerequisite for priming of adaptive immune responses, DCs must take up tumor antigens, process them and present them in the context of the major histocompatibility complex (MHC). DCs also serve as sensors of innate activation signals from cancer that are necessary for their activation and effective priming of cancer specific T cells. Here we discuss the role of DCs in the sensing of cancer and in priming the adaptive response against tumors. Furthermore, we present the essential role of the Stimulator of Interferon Genes (STING) signaling pathway in producing type I interferons (IFNs) that are essential in this process.
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Affiliation(s)
- Ralph E Vatner
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7038, Cincinnati, OH 45229, United States; Department of Radiation Oncology, University of Cincinnati College of Medicine, 234 Goodman Street, ML 0757, Cincinnati, OH 45267, United States.
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7038, Cincinnati, OH 45229, United States
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14
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Cappelletti M, Presicce P, Lawson MJ, Chaturvedi V, Stankiewicz TE, Vanoni S, Harley IT, McAlees JW, Giles DA, Moreno-Fernandez ME, Rueda CM, Senthamaraikannan P, Sun X, Karns R, Hoebe K, Janssen EM, Karp CL, Hildeman DA, Hogan SP, Kallapur SG, Chougnet CA, Way SS, Divanovic S. Type I interferons regulate susceptibility to inflammation-induced preterm birth. JCI Insight 2017; 2:e91288. [PMID: 28289719 DOI: 10.1172/jci.insight.91288] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Preterm birth (PTB) is a leading worldwide cause of morbidity and mortality in infants. Maternal inflammation induced by microbial infection is a critical predisposing factor for PTB. However, biological processes associated with competency of pathogens, including viruses, to induce PTB or sensitize for secondary bacterial infection-driven PTB are unknown. We show that pathogen/pathogen-associated molecular pattern-driven activation of type I IFN/IFN receptor (IFNAR) was sufficient to prime for systemic and uterine proinflammatory chemokine and cytokine production and induction of PTB. Similarly, treatment with recombinant type I IFNs recapitulated such effects by exacerbating proinflammatory cytokine production and reducing the dose of secondary inflammatory challenge required for induction of PTB. Inflammatory challenge-driven induction of PTB was eliminated by defects in type I IFN, TLR, or IL-6 responsiveness, whereas the sequence of type I IFN sensing by IFNAR on hematopoietic cells was essential for regulation of proinflammatory cytokine production. Importantly, we also show that type I IFN priming effects are conserved from mice to nonhuman primates and humans, and expression of both type I IFNs and proinflammatory cytokines is upregulated in human PTB. Thus, activation of the type I IFN/IFNAR axis in pregnancy primes for inflammation-driven PTB and provides an actionable biomarker and therapeutic target for mitigating PTB risk.
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Affiliation(s)
| | - Pietro Presicce
- Division of Neonatology/Pulmonary Biology, Cincinnati Children's Hospital Research Foundation
| | - Matthew J Lawson
- Division of Immunobiology.,Molecular, Cellular and Biochemical Pharmacology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | | | - Simone Vanoni
- Division of Allergy and Immunology, Cincinnati Children's Hospital Research Foundation, and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | | | - Daniel A Giles
- Division of Immunobiology.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | | | | | | | - Rebekah Karns
- Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Research Foundation, and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | | | | | | | - Simon P Hogan
- Division of Allergy and Immunology, Cincinnati Children's Hospital Research Foundation, and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Suhas G Kallapur
- Division of Neonatology/Pulmonary Biology, Cincinnati Children's Hospital Research Foundation
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15
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Singh N, Modur V, Mohanty V, Choi K, Janssen EM, Privette-Vinnedge L, Huang G, Komurov K. Abstract B33: Loss of transcriptional fidelity in cancers confers immunotherapy resistance. Cancer Immunol Res 2017. [DOI: 10.1158/2326-6074.tumimm16-b33] [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
Most cancers are immunogenic, either due to neo-antigenic mutational load that makes them susceptible to rejection by the adaptive immune system, or due to oncogenic stress pathways that makes them vulnerable to innate anti-tumor responses. The therapeutic strategies to reactivate the host anti-tumor immunity have a great promise for cancer therapy. However, despite the unprecedented promise of a cure and durable disease management in select patients, the response rates are still low in advanced cases, most of which also relapse. These findings reflect the multitude of mechanisms of tumor cell evasion of anti-tumor immunity, and that mechanisms beyond inactivation of local lymphocyte infiltrates might also play a role. Through comprehensive computational and follow-up experimental validations, we have found that a subset of cancers (~15-20% of all cancers) is characterized by severe defects in almost the entire epigenetic and transcriptional apparatus, resulting in genome-wide deregulation of histone modifications, mRNA transcription elongation, splicing and processing (Loss of Transcriptional Fidelity: LTF). LTF impaired the transcription of long genes in the genome at both mRNA and protein levels; and the pathways that are primarily regulated by long genes, such as immune-related (FasL response, TNF/NF-kB signaling, interferon signaling), MAP kinase and tyrosine kinase signaling pathways, were significantly suppressed in LTF+ (i.e. those with LTF) tumors. We validated the LTF phenotype and associated epigenetic and transcriptional defects in some cancer cell lines, and showed that severe loss of transcriptional fidelity can confer resistance to pro-inflammatory anti-tumor mechanisms in vitro, and suppress immune-mediated tumor rejection in vivo. As such, we found that LTF predicted poor response to immunotherapeutic, but not to chemo- or targeted therapy, agents in the clinic, including immune checkpoint inhibitors, in 3 different cohorts. Therefore, LTF is a previously unknown global phenotype in cancer cells that confers cell-autonomous resistance to anti-tumor immune attacks. Tumor lymphocyte infiltration is one of the best markers of immunotherapy response in the clinic. However, LTF+ tumors were characterized by a higher rate of immune cell infiltration, but paradoxically, less immune-mediated local tumor cell lysis, further supporting the notion that LTF is a tumor cell-autonomous mechanism of immune resistance. As such, combining tumor lymphocyte infiltration with LTF had superior power in predicting the progression-free and overall survival of melanoma patients treated with the anti-CTLA4 antibody ipilimumab. This study uncovers a major phenotype in cancers that dictates global transcriptional and signaling state in the cell, and response to immunotherapeutic agents in the clinic. Further, this study warrants assessment of markers of LTF in immunotherapy-candidate patients, especially given that LTF+ kidney cancer patients had significantly better response to targeted therapy agents.
Citation Format: Navneet Singh, Vishnu Modur, Vakul Mohanty, Kwangmin Choi, Edith M. Janssen, Lisa Privette-Vinnedge, Gang Huang, Kakajan Komurov. Loss of transcriptional fidelity in cancers confers immunotherapy resistance. [abstract]. In: Proceedings of the AACR Special Conference on Tumor Immunology and Immunotherapy; 2016 Oct 20-23; Boston, MA. Philadelphia (PA): AACR; Cancer Immunol Res 2017;5(3 Suppl):Abstract nr B33.
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16
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Klarquist J, Hennies CM, Janssen EM. Type I interferon protects CD4 T cells from NK cell killing in a cGVHD model of SLE. The Journal of Immunology 2016. [DOI: 10.4049/jimmunol.196.supp.186.9] [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
Myriad studies have linked type I interferon (IFN) to the pathogenesis of autoimmune diseases, including systemic lupus erythematosus (SLE). While increased levels of type I IFN are found in patients with SLE, and IFN blockade ameliorates disease in most mouse models of lupus, its precise roles in driving SLE pathogenesis remain largely unknown. Here, we dissected the role of type I IFN in disease development using the bm12 cGVHD model of SLE, where IAb (C57BL/6) mice develop SLE-like disease upon transfer of IAbm12 (bm12) CD4 T cells. Our data show increased serum levels of type I IFN over time, concomitant with the development of T follicular helper cells, germinal center (GC) B cells, plasmablasts, and anti-nuclear antibodies (ANA). However, these disease parameters are significantly reduced in IFN-α receptor-deficient (Ifnar−/−) recipient mice, indicating an important role for type I IFN sensing by non-T cells. Surprisingly, transfer of highly purified Ifnar−/− bm12 CD4 T cells into WT C57BL/6 hosts resulted in poor expansion of the transferred T cells, and limited development of GC B cells, plasmablasts, and ANA. Importantly, NK cell depletion restored the expansion of Ifnar−/− CD4 T cells and downstream sequelae. These findings suggest that one novel mechanism by which type I IFN contributes to autoimmune disease is by regulating the susceptibility of pathogenic CD4 T cells to NK cell killing, thus providing further rationale for the development of anti-IFNAR therapeutics for the treatment of SLE.
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17
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Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease with diverse clinical and immunological manifestations. Several spontaneous and inducible animal models mirror common components of human disease, including the bm12 transfer model. Upon transfer of bm12 splenocytes or purified CD4 T cells, C57BL/6 mice rapidly develop large frequencies of T follicular helper cells (Tfh), germinal center (GC) B cells, and plasma cells followed by high levels of circulating anti-nuclear antibodies. Since this model utilizes mice on a pure C57BL/6 background, researchers can quickly and easily study disease progression in transgenic or knockout mouse strains in a relatively short period of time. Here we describe protocols for the induction of the model and the quantitation Tfh, GC B cells, and plasma cells by multi-color flow cytometry. Importantly, these protocols can also be used to characterize disease in most mouse models of SLE and identify Tfh, GC B cells, and plasma cells in other disease models.
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Affiliation(s)
- Jared Klarquist
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine;
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18
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Chougnet CA, Thacker RI, Shehata HM, Hennies CM, Lehn MA, Lages CS, Janssen EM. Loss of Phagocytic and Antigen Cross-Presenting Capacity in Aging Dendritic Cells Is Associated with Mitochondrial Dysfunction. J Immunol 2015; 195:2624-32. [PMID: 26246142 DOI: 10.4049/jimmunol.1501006] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 07/13/2015] [Indexed: 01/04/2023]
Abstract
Impaired functionality of dendritic cells (DCs) significantly contributes to decreased adaptive immune responses in aged hosts. The expression of MHC-peptide on the DC surface is the critical first step in T cell priming, but few studies have addressed the effect of aging on Ag acquisition, processing, and presentation by DCs. In this study, we show that aged murine DCs were less efficient in the cross-presentation of cell-associated Ag and subsequently in the cross-priming of CD8(+) T cells than were their young counterparts. The decreased cross-presentation was associated with a reduction in the frequency of CD8α DCs and merocytic (CD8α(-)CD11b(-))DCs that could endocytose cell-associated Ag, as well as the number and the size of the endocytosed particles in the DC that did internalize cell-associated materials. Mechanistically, phagocytic capacity has been associated with mitochondrial activity and membrane potential (Δψm). Aged DCs exhibited profound signs of mitochondrial dysfunction, illustrated by lower Δψm, reduced ATP turnover and coupling efficiency, decreased baseline oxidative phosphorylation, and greater proton leak and reactive oxygen species (ROS) production. Mimicking the aged metabolic phenotype in young DCs by pharmacologic manipulation indicated that the reductions in Δψm and ATP impeded the phagocytic capacity whereas ROS interfered with a later step in the cross-presentation process. Conversely, in vitro scavenging of ROS partially restored cross-presentation by aged DCs. Taken together, these data suggest that improvement of aged DC functionality might be feasible in the elderly by targeting metabolic dysfunction or its downstream sequelae, thereby opening new avenues for enhancing vaccine efficiency in this population.
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Affiliation(s)
- Claire A Chougnet
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Robert I Thacker
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Hesham M Shehata
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Cassandra M Hennies
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Maria A Lehn
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Celine S Lages
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
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19
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Hennies CM, Lehn MA, Janssen EM. Quantitating MHC class II trafficking in primary dendritic cells using imaging flow cytometry. J Immunol Methods 2015; 423:18-28. [PMID: 25967952 DOI: 10.1016/j.jim.2015.04.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 10/29/2014] [Revised: 04/24/2015] [Accepted: 04/30/2015] [Indexed: 01/24/2023]
Abstract
Presentation of antigenic peptides in MHC class II (MHCII) on dendritic cells (DCs) is the first step in the activation of antigen-specific CD4(+)T cells. The expression of surface MHCII-peptide complexes is tightly regulated as the frequency of MHCII-peptide complexes can affect the magnitude, as well as the phenotype of the ensuing CD4(+)T cell response. The surface MHCII-peptide levels are determined by the balance between expression of newly generated complexes, complex internalization, and their subsequent re-emergence or degradation. However, the molecular mechanisms that underpin these processes are still poorly understood. Here we describe a multispectral imaging flow cytometry assay to visualize MHCII trafficking that can be used as a tool to dissect the molecular mechanisms that regulate MHCII homeostasis in primary mouse and human DCs.
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Affiliation(s)
- Cassandra M Hennies
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Maria A Lehn
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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20
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Klarquist J, Hennies CM, Lehn MA, Reboulet RA, Feau S, Janssen EM. STING-mediated DNA sensing promotes antitumor and autoimmune responses to dying cells. J Immunol 2014; 193:6124-34. [PMID: 25385820 DOI: 10.4049/jimmunol.1401869] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Adaptive immune responses to Ags released by dying cells play a critical role in the development of autoimmunity, allograft rejection, and spontaneous as well as therapy-induced tumor rejection. Although cell death in these situations is considered sterile, various reports have implicated type I IFNs as drivers of the ensuing adaptive immune response to cell-associated Ags. However, the mechanisms that underpin this type I IFN production are poorly defined. In this article, we show that dendritic cells (DCs) can uptake and sense nuclear DNA-associated entities released by dying cells to induce type I IFN. Remarkably, this molecular pathway requires STING, but not TLR or NLR function, and results in the activation of IRF3 in a TBK1-dependent manner. DCs are shown to depend on STING function in vivo to efficiently prime IFN-dependent CD8(+) T cell responses to tumor Ags. Furthermore, loss of STING activity in DCs impairs the generation of follicular Th cells and plasma cells, as well as anti-nuclear Abs, in an inducible model of systemic lupus erythematosus. These findings suggest that the STING pathway could be manipulated to enable the rational design of immunotherapies that enhance or diminish antitumor and autoimmune responses, respectively.
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Affiliation(s)
- Jared Klarquist
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
| | - Cassandra M Hennies
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
| | - Maria A Lehn
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
| | - Rachel A Reboulet
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
| | - Sonia Feau
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
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21
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Zhang X, Ulm A, Somineni HK, Oh S, Weirauch MT, Zhang HX, Chen X, Lehn MA, Janssen EM, Ji H. DNA methylation dynamics during ex vivo differentiation and maturation of human dendritic cells. Epigenetics Chromatin 2014; 7:21. [PMID: 25161698 PMCID: PMC4144987 DOI: 10.1186/1756-8935-7-21] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 07/29/2014] [Indexed: 12/31/2022] Open
Abstract
Background Dendritic cells (DCs) are important mediators of innate and adaptive immune responses, but the gene networks governing their lineage differentiation and maturation are poorly understood. To gain insight into the mechanisms that promote human DC differentiation and contribute to the acquisition of their functional phenotypes, we performed genome-wide base-resolution mapping of 5-methylcytosine in purified monocytes and in monocyte-derived immature and mature DCs. Results DC development and maturation were associated with a great loss of DNA methylation across many regions, most of which occurs at predicted enhancers and binding sites for known transcription factors affiliated with DC lineage specification and response to immune stimuli. In addition, we discovered novel genes that may contribute to DC differentiation and maturation. Interestingly, many genes close to demethylated CG sites were upregulated in expression. We observed dynamic changes in the expression of TET2, DNMT1, DNMT3A and DNMT3B coupled with temporal locus-specific demethylation, providing possible mechanisms accounting for the dramatic loss in DNA methylation. Conclusions Our study is the first to map DNA methylation changes during human DC differentiation and maturation in purified cell populations and will greatly enhance the understanding of DC development and maturation and aid in the development of more efficacious DC-based therapeutic strategies.
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Affiliation(s)
- Xue Zhang
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Ashley Ulm
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Hari K Somineni
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Sunghee Oh
- Division of Human Genetics, Kim Sook Za Children's Hospital Medical Center Research Foundation, 745 JikJi Daero Heung Deok Gu, Cheongju, Chung Buk 361-841, South Korea
| | - Matthew T Weirauch
- Center for Autoimmune Genomics and Etiology and Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Hong-Xuan Zhang
- Procter & Gamble Co., Mason Business Center, 8700 S Mason Montgomery Road, Mason, OH 45040, USA
| | - Xiaoting Chen
- School of Electronic and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Maria A Lehn
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Edith M Janssen
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Hong Ji
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
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Tabeta K, Hoebe K, Janssen EM, Xia Y, Beutler B. Respond to "No antigen-presentation defect in Unc93b13d/3d (3d) mice". Nat Immunol 2013; 14:1102-3. [DOI: 10.1038/ni.2734] [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: 11/09/2022]
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Thacker RI, Janssen EM. Cross-presentation of cell-associated antigens by mouse splenic dendritic cell populations. Front Immunol 2012; 3:41. [PMID: 22566924 PMCID: PMC3342388 DOI: 10.3389/fimmu.2012.00041] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [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: 12/09/2011] [Accepted: 02/19/2012] [Indexed: 11/13/2022] Open
Abstract
Cross-presentation of cell-associated antigens (Ag) plays an important role in the induction of anti-tumor responses, autoimmune diseases, and transplant rejection. While several dendritic cell (DC) populations can induce pro-inflammatory CD8(+) T cell responses to cell-associated Ag during infection, in the absence of infection, cross-priming of naïve CD8(+) T cells is highly restricted. Comparison of the main splenic DC populations in mice - including the classic, cross-presenting CD8α DC and the recently described merocytic DC (mcDC) - reveals that cross-priming DCs display a distinct phenotype in cell-associated Ag uptake, endosomal/lysosomal trafficking, lysosomal acidification, and Ag persistence compared to non-cross-priming DC populations. Although the CD8α DC and mcDC subsets utilize similar processing pathways to cross-present cell-associated Ag, cross-priming by CD8α DCs is associated with IL-12 production, while the superior priming of the mcDC is critically dependent on type I IFN production. This discussion illustrates how subtle differences in internal processing pathways and their signaling sequelae significantly affect the duration of Ag cross-presentation and cytokine production by DCs, thereby shaping the ensuing CD8(+) T cell response.
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Affiliation(s)
- Robert I Thacker
- Division of Molecular Immunology, Cincinnati Children's Hospital Research Foundation, University of Cincinnati College of Medicine Cincinnati, OH, USA
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Nierkens S, den Brok MH, Garcia Z, Togher S, Wagenaars J, Wassink M, Boon L, Ruers TJ, Figdor CG, Schoenberger SP, Adema GJ, Janssen EM. Immune adjuvant efficacy of CpG oligonucleotide in cancer treatment is founded specifically upon TLR9 function in plasmacytoid dendritic cells. Cancer Res 2011; 71:6428-37. [PMID: 21788345 DOI: 10.1158/0008-5472.can-11-2154] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The differences in function, location, and migratory pattern of conventional dendritic cells (cDC) and plasmacytoid DCs (pDC) not only point to specialized roles in immune responses but also signify additive and interdependent relationships required to clear pathogens. We studied the in vivo requirement of cross-talk between cDCs and pDCs for eliciting antitumor immunity against in situ released tumor antigens in the absence or presence of the Toll-like receptor (TLR) 9 agonist CpG. Previous data indicated that CpG boosted tumor-specific T-cell responses after in vivo tumor destruction and increased survival after tumor rechallenges. The present study shows that cDCs are indispensable for cross-presentation of ablation-released tumor antigens and for the induction of long-term antitumor immunity. Depletion of pDCs or applying this model in type I IFN receptor-deficient mice abrogated CpG-mediated responses. CD8α(+) cDCs and the recently identified merocytic cDCs were dependent on pDCs for CpG-induced upregulation of CD80. Moreover, DC transfer studies revealed that merocytic cDCs and CD8α(+) cDCs were most susceptible to pDC help and subsequently promoted tumor-free survival in a therapeutic setting. By transferring wild-type pDCs into TLR9-deficient mice, we finally showed that TLR9 expression in pDCs is sufficient to benefit from CpG as an adjuvant. These studies indicate that the efficacy of CpG in cancer immunotherapy is dependent on cross-talk between pDCs and specific subsets of cDCs.
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Affiliation(s)
- Stefan Nierkens
- La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
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25
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Katz JD, Janssen EM. Breaking T cell tolerance to beta cell antigens by merocytic dendritic cells. Cell Mol Life Sci 2011; 68:2873-83. [PMID: 21626409 DOI: 10.1007/s00018-011-0730-6] [Citation(s) in RCA: 8] [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] [Received: 03/03/2011] [Revised: 04/12/2011] [Accepted: 05/09/2011] [Indexed: 11/28/2022]
Abstract
In type 1 diabetes (T1D), a break in central and peripheral tolerance results in antigen-specific T cells destroying insulin-producing, pancreatic beta cells. Herein, we discuss the critical sub-population of dendritic cells responsible for mediating both the cross-presentation of islet antigen to CD8(+) T cells and the direct presentation of beta cell antigen to CD4(+) T cells. These cells, termed merocytic dendritic cells (mcDC), are more numerous in non-obese diabetic (NOD), and antigen-loaded mcDC rescue CD8(+) T cells from peripheral anergy and deletion, and stimulate islet-reactive CD4(+) T cells. When purified from the pancreatic lymph nodes of overtly diabetic NOD mice, mcDC can break peripheral T cell tolerance to beta cell antigens in vivo and induce rapid onset T cell-mediated T1D in young NOD mouse. Thus, the mcDC subset appears to represent the long-sought critical antigen-presenting cell responsible for breaking peripheral tolerance to beta cell antigen in vivo.
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Affiliation(s)
- Jonathan D Katz
- Division of Endocrinology, Department of Pediatrics, Cincinnati Children's Research Foundation, University of Cincinnati College of Medicine, Cincinnati, OH 45229-3039, USA.
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26
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Wolkers MC, Bensinger SJ, Green DR, Schoenberger SP, Janssen EM. Interleukin-2 rescues helpless effector CD8+ T cells by diminishing the susceptibility to TRAIL mediated death. Immunol Lett 2011; 139:25-32. [PMID: 21621553 DOI: 10.1016/j.imlet.2011.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 04/21/2011] [Accepted: 04/21/2011] [Indexed: 11/28/2022]
Abstract
CD8(+) T cells primed in the absence of CD4(+) T cell help are programmed to produce TRAIL, which results in Death receptor (DR5) mediated apoptosis upon restimulation. Here, we studied whether these 'helpless' effector CD8(+) T cells are consigned to an apoptotic fate or whether their helpless program can be altered by inflammatory or growth cytokines. We found that helpless CD8(+) T cells regained their full proliferative and functional capacity only when IL-2 was added to cell cultures, while IL-7 and IL-15, two common gamma chain cytokines associated with CD8(+) T cell homeostasis and memory, could only partly restore secondary expansion in helpless CD8(+) T cells. Recovery of functional CD8(+) T cell immunity by IL-2 was concomitant with induction of IL2Rα (CD25) expression, downregulation of TRAIL, and the upregulation of anti-apoptotic molecules Bcl-2 and FLIP. The addition of IL-2 to helpless CD8(+) T cells also interfered with DR5-mediated apoptosis induction, indicating that IL-2 affects several components of the TRAIL-DR5 pathway. Collectively, these data demonstrate that the helpless phenotype is not fixed, and that IL-2R signaling at the time of reactivation can play an important role in restoring CD8(+) T cell function.
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Affiliation(s)
- Monika C Wolkers
- Department of Cellular Immunology, La Jolla Institute for Allergy and Immunology, 9420 Athena Circle, La Jolla, CA 92037, USA.
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27
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Nierkens S, Janssen EM. Harnessing dendritic cells for tumor antigen presentation. Cancers (Basel) 2011; 3:2195-213. [PMID: 24212804 PMCID: PMC3757412 DOI: 10.3390/cancers3022195] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 04/14/2011] [Accepted: 04/19/2011] [Indexed: 12/11/2022] Open
Abstract
Dendritic cells (DC) are professional antigen presenting cells that are crucial for the induction of anti-tumor T cell responses. As a consequence, research has focused on the harnessing of DCs for therapeutic interventions. Although current strategies employing ex vivo-generated and tumor-antigen loaded DCs have been proven feasible, there are still many obstacles to overcome in order to improve clinical trial successes and offset the cost and complexity of customized cell therapy. This review focuses on one of these obstacles and a pivotal step for the priming of tumor-specific CD8+ and CD4+ T cells; the in vitro loading of DCs with tumor antigens.
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Affiliation(s)
- Stefan Nierkens
- Department of Tumor Immunology, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, Geert Grooteplein 28, Nijmegen 6525 GA, The Netherlands; E-Mail:
| | - Edith M. Janssen
- Division of Molecular Immunology, Cincinnati Children's Hospital Research Foundation, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
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28
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Hennies CM, Reboulet RA, Garcia Z, Nierkens S, Wolkers MC, Janssen EM. Selective expansion of merocytic dendritic cells and CD8DCs confers anti-tumour effect of Fms-like tyrosine kinase 3-ligand treatment in vivo. Clin Exp Immunol 2011; 163:381-91. [PMID: 21235535 DOI: 10.1111/j.1365-2249.2010.04305.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Vaccination with autologous cancer cells aims to enhance adaptive immune responses to tumour-associated antigens. The incorporation of Fms-like tyrosine kinase 3-ligand (FLT3L) treatment to the vaccination scheme has been shown previously to increase the immunogenicity of cancer vaccines, thereby enhancing their therapeutic potential. While evidence has been provided that FLT3L confers its effect through the increase of absolute dendritic cell (DC) numbers, it is currently unknown which DC populations are responsive to FLT3L and which effect FLT3L treatment has on DC functions. Here we show that the beneficial effects of FLT3L treatment resulted predominantly from a marked increase of two specific DC populations, the CD8 DCs and the recently identified merocytic DC (mcDC). These two DC populations (cross)-present cell-associated antigens to T cells in a natural killer (NK)-independent fashion. FLT3L treatment augmented the absolute numbers of these DCs, but did not change their activation status nor their capacity to prime antigen-specific T cells. While both DC populations effectively primed CD8(+) T cell responses to cell-associated antigens, only mcDC were capable to prime CD4(+) T cells to cell-associated antigens. Consequentially, the transfer of tumour vaccine-pulsed mcDC, but not of CD8 DCs, protected mice from subsequent tumour challenge in a vaccination model and resulted in eradication of established tumours in a therapeutic approach. These results show that the beneficial effect of FLT3L is associated with the induction of mcDC and suggests that selective targeting to mcDC or instilling mcDC 'characteristics' into conventional DC populations could significantly enhance the efficacy of tumour vaccines.
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Affiliation(s)
- C M Hennies
- Division of Molecular Immunology, Cincinnati Children's Hospital Research Foundation, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
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29
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Reboulet RA, Hennies CM, Garcia Z, Nierkens S, Janssen EM. Prolonged antigen storage endows merocytic dendritic cells with enhanced capacity to prime anti-tumor responses in tumor-bearing mice. J Immunol 2010; 185:3337-47. [PMID: 20720209 DOI: 10.4049/jimmunol.1001619] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tumor cell vaccination with irradiated autologous tumor cells is a promising approach to activate tumor-specific T cell responses without the need for tumor Ag identification. However, uptake of dying cells by dendritic cells (DCs) is generally a noninflammatory or tolerizing event to prevent the development of autoreactive immune responses. In this study, we describe the mechanisms that confer the potent T cell priming capacity of a recently identified a population of DCs (merocytic DCs [mcDCs]) that potently primes both CD8(+) and CD4(+) T cells to cell-associated Ags upon uptake of apoptotic cells. mcDCs acquired cell-associated materials through a process of merocytosis that is defined by the uptake of small particles that are stored in nonacidic compartments for prolonged periods, sustained Ag presentation, and the induction of type I IFN. T cells primed by mcDCs to cell-associated Ags exhibit increased primary expansion, enhanced effector function, and increased memory formation. By using transgenic T cell transfer models and endogenous models, we show that treatment of tumor-bearing mice with mcDCs that have been exposed to dying tumor cells results in tumor suppression and increased host survival through the activation of naive tumor-specific CD8(+) T cells as well as the reinvigoration of tumor-specific T cells that had been rendered nonresponsive by the tumor in vivo. The potent capacity of mcDCs to prime both CD4(+) and CD8(+) T cells to cell-associated Ags under immunosuppressive conditions makes this DC subset an attractive target for tumor therapies as well as interventional strategies for autoimmunity and transplantation.
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Affiliation(s)
- Rachel A Reboulet
- Division of Molecular Immunology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA
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30
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Katz JD, Ondr JK, Opoka RJ, Garcia Z, Janssen EM. Cutting edge: merocytic dendritic cells break T cell tolerance to beta cell antigens in nonobese diabetic mouse diabetes. J Immunol 2010; 185:1999-2003. [PMID: 20644171 DOI: 10.4049/jimmunol.1001398] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In type 1 diabetes, the breach of central and peripheral tolerance results in autoreactive T cells that destroy insulin-producing, pancreatic beta cells. In this study, we identify a critical subpopulation of dendritic cells responsible for mediating both the cross-presentation of islet Ags to CD8(+) T cells and the direct presentation of beta cell Ags to CD4(+) T cells. These cells, termed merocytic dendritic cells (mcDCs), are more numerous in the NOD mouse and, when Ag-loaded, rescue CD8(+) T cells from peripheral anergy and deletion while stimulating islet-reactive CD4(+) T cells. When purified from the pancreatic lymph nodes of overtly diabetic NOD mice, mcDCs break peripheral T cell tolerance to beta cells in vivo and induce rapid onset type 1 diabetes in the young NOD mouse. Thus, the mcDC subset appears to represent the long-sought APC responsible for breaking peripheral tolerance to beta cell Ags in vivo.
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Affiliation(s)
- Jonathan D Katz
- Division of Endocrinology, Diabetes Research Center, Cincinnati Children's Research Foundation, Cincinnati, OH 45229, USA.
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31
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Janssen EM, Lemmens EE, Gour N, Reboulet RA, Green DR, Schoenberger SP, Pinkoski MJ. Distinct roles of cytolytic effector molecules for antigen-restricted killing by CTL in vivo. Immunol Cell Biol 2010; 88:761-5. [PMID: 20309009 DOI: 10.1038/icb.2010.37] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cytotoxic T lymphocytes (CTLs) represent one of the front lines of defense for the immune system, killing virus-infected and tumor-transformed cells. CTL use at least two mechanisms to induce apoptosis in their targets, one mediated by perforin and granzymes, and the other triggered by the death ligand, CD95 ligand (CD95L). Here, we used an in vivo cytotoxicity assay to measure specific clearance of antigen-bearing target cells in mice that had previously been immunized with noninfectious cell-associated antigens. We found that perforin was dispensable for efficient clearance of antigen-bearing cells from immunized mice, but only if CD95/CD95L was functional; however, there was a delay in target cell clearance in the absence of perforin. In addition, we observed ∼35% target cell clearance in the absence of both perforin and CD95L, which was only slightly abrogated in the presence of a neutralizing anti-tumor necrosis factor (TNF) antibody. The presence of a dominant negative Fas-associated death domain (FADD) did not block target cell clearance and therefore cannot be attributed to known death receptors. Taken together, these data suggest that perforin- and CD95L-dependent killing are complementary at early time points, each can compensate for the absence of the other at later time points, and that there is an additional component of antigen-restricted CTL killing independent of perforin, CD95L, and TNFα.
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Affiliation(s)
- Edith M Janssen
- Division of Molecular Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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Bensinger SJ, Bradley MN, Joseph SB, Zelcer N, Janssen EM, Hausner MA, Shih R, Parks JS, Edwards PA, Jamieson BD, Tontonoz P. LXR signaling couples sterol metabolism to proliferation in the acquired immune response. Cell 2008; 134:97-111. [PMID: 18614014 PMCID: PMC2626438 DOI: 10.1016/j.cell.2008.04.052] [Citation(s) in RCA: 520] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2007] [Revised: 02/26/2008] [Accepted: 04/21/2008] [Indexed: 12/13/2022]
Abstract
Cholesterol is essential for membrane synthesis; however, the mechanisms that link cellular lipid metabolism to proliferation are incompletely understood. We demonstrate here that cellular cholesterol levels in dividing T cells are maintained in part through reciprocal regulation of the LXR and SREBP transcriptional programs. T cell activation triggers induction of the oxysterol-metabolizing enzyme SULT2B1, consequent suppression of the LXR pathway for cholesterol transport, and promotion of the SREBP pathway for cholesterol synthesis. Ligation of LXR during T cell activation inhibits mitogen-driven expansion, whereas loss of LXRbeta confers a proliferative advantage. Inactivation of the sterol transporter ABCG1 uncouples LXR signaling from proliferation, directly linking sterol homeostasis to the antiproliferative action of LXR. Mice lacking LXRbeta exhibit lymphoid hyperplasia and enhanced responses to antigenic challenge, indicating that proper regulation of LXR-dependent sterol metabolism is important for immune responses. These results implicate LXR signaling in a metabolic checkpoint that modulates cell proliferation and immunity.
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Affiliation(s)
- Steven J Bensinger
- Howard Hughes Medical Institute, Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90049, USA
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Benedict CA, Loewendorf A, Garcia Z, Blazar BR, Janssen EM. Dendritic cell programming by cytomegalovirus stunts naive T cell responses via the PD-L1/PD-1 pathway. J Immunol 2008; 180:4836-47. [PMID: 18354207 DOI: 10.4049/jimmunol.180.7.4836] [Citation(s) in RCA: 74] [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: 12/31/2022]
Abstract
Early during infection, CMV targets dendritic cells (DC) and alters their functions. Herein we show that CMV-infected DC maintain the ability to present both virus-derived and exogenous Ags, but that they actively induce tolerance or anergy in Ag-specific T cells. CMV accomplishes this by selectively maintaining high-level expression of the negative costimulatory molecule programmed death ligand-1 (PD-L1), while commensurately down-regulating positive costimulatory molecules and MHC on the DC surface. Consequently, CD4 and CD8 T cells activated by these infected DC have a stunted phenotype, characterized by poor proliferation, effector function. and recall responses. Blocking PD-L1, but not PD-L2, during direct priming of naive T cells by infected DC significantly restores Ag-specific T cell functions. Using systems where direct and cross-priming of T cells can be distinguished revealed that PD-L1/PD-1 signaling contributes only when naive T cells are primed directly by infected DC, and not upon cross-presentation of viral Ags by uninfected DC. These data suggest that murine CMV programs infected DC during acute infection to inhibit early host adaptive antiviral responses by tipping the balance between negative and positive cosignals.
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Affiliation(s)
- Chris A Benedict
- Department of Molecular Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.
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Tabeta K, Hoebe K, Janssen EM, Du X, Georgel P, Crozat K, Mudd S, Mann N, Sovath S, Goode J, Shamel L, Herskovits AA, Portnoy DA, Cooke M, Tarantino LM, Wiltshire T, Steinberg BE, Grinstein S, Beutler B. The Unc93b1 mutation 3d disrupts exogenous antigen presentation and signaling via Toll-like receptors 3, 7 and 9. Nat Immunol 2006; 7:156-64. [PMID: 16415873 DOI: 10.1038/ni1297] [Citation(s) in RCA: 510] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Accepted: 12/01/2005] [Indexed: 11/08/2022]
Abstract
Here we have identified 'triple D' (3d), a recessive N-ethyl-N-nitrosourea-induced mutation and phenotype in which no signaling occurs via the intracellular Toll-like receptors 3, 7 and 9 (sensors for double-stranded RNA, single-stranded RNA and unmethylated DNA, respectively). The 3d mutation also prevented cross-presentation and diminished major histocompatibility complex class II presentation of exogenous antigen; it also caused hypersusceptibility to infection by mouse cytomegalovirus and other microbes. By positional identification, we found 3d to be a missense allele of Unc93b1, which encodes the 12-membrane-spanning protein UNC-93B, a highly conserved molecule found in the endoplasmic reticulum with multiple paralogs in mammals. Innate responses to nucleic acids and exogenous antigen presentation, which both initiate in endosomes, thus seem to depend on an endoplasmic reticulum-resident protein, which suggests communication between these organellar systems.
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Affiliation(s)
- Koichi Tabeta
- Department of Immunology, The Scripps Research Institute, La Jolla, California 92037, USA
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Barouch-Bentov R, Lemmens EE, Hu J, Janssen EM, Droin NM, Song J, Schoenberger SP, Altman A. Protein kinase C-theta is an early survival factor required for differentiation of effector CD8+ T cells. J Immunol 2005; 175:5126-34. [PMID: 16210616 DOI: 10.4049/jimmunol.175.8.5126] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
CD8(+) T cells are crucial for host defense against invading pathogens and malignancies. However, relatively little is known about intracellular signaling events that control the genetic program of their activation and differentiation. Using CD8(+) T cells from TCR-transgenic mice crossed to protein kinase C-theta (PKCtheta)-deficient mice, we report that PKCtheta is not required for Ag-induced CD8(+) T cell proliferation, but is important for T cell survival and differentiation into functional, cytokine-producing CTLs. Ag-stimulated PKCtheta(-/-) T cells underwent accelerated apoptosis associated with deregulated expression of Bcl-2 family proteins and displayed reduced activation of ERKs and JNKs. Some defects in the function of PKCtheta(-/-) T cells (poor survival and reduced Bcl-2 and Bcl-x(L) expression, CTL activity, and IFN-gamma expression) were partially or fully restored by coculture with wild-type T cells or by addition of exogenous IL-2, whereas others (increased Bim(EL) expression and TNF-alpha production) were not. These findings indicate that PKCtheta, although not essential for initial Ag-induced proliferation, nevertheless plays an important role in promoting and extending T cell survival, thereby enabling the complete genetic program of effector CD8(+) differentiation. The requirement for PKCtheta in different types of T cell-dependent responses may, therefore, depend on the overall strength of signaling by the TCR and costimulatory receptors and may reflect, in addition to its previously established role in activation, an important, hitherto unappreciated, role in T cell survival.
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Affiliation(s)
- Rina Barouch-Bentov
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, San Diego, CA 92121, USA
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Encinas JA, Janssen EM, Weiner DB, Calarota SA, Nieto D, Moll T, Carlo DJ, Moss RB. Anti-T-cell Ig and mucin domain-containing protein 1 antibody decreases TH2 airway inflammation in a mouse model of asthma. J Allergy Clin Immunol 2005; 116:1343-9. [PMID: 16337469 DOI: 10.1016/j.jaci.2005.08.031] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2005] [Revised: 07/27/2005] [Accepted: 08/15/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND The T-cell Ig and mucin domain-containing (TIM) gene locus has been linked to differences in T(H)2 responsiveness and asthma susceptibility in mice. The homologous locus in human subjects harbors the gene for TIM-1, which encodes a receptor for hepatitis A virus and has been linked with decreased susceptibility to atopic disease in hepatitis A virus-seropositive individuals. OBJECTIVE We investigated the effects of administering antibodies against TIM-1 in a mouse model of allergic asthma to determine whether the treatment could downregulate T(H)2 cytokines and reduce pulmonary inflammation. METHODS BALB/c mice were sensitized and challenged with ovalbumin to induce airway inflammation. Before the ovalbumin challenge, mice were treated with anti-TIM-1 mAb or a control antibody. RESULTS Administration of anti-TIM-1 antibody to mice after ovalbumin sensitization and before ovalbumin challenge results in a significant decrease in inflammatory cells in bronchoalveolar lavage fluid compared with administration of a control antibody. The decrease is accompanied by significantly lower antigen-specific production of the T(H)2 cytokines IL-10 and IL-13 by cells from the draining lymph nodes. The T(H)1 cytokine IFN-gamma appears to be unaffected. Analysis of the lungs shows that goblet cell hyperplasia and mucus production and the expression of IL-10 are markedly decreased in anti-TIM-1-treated mice. CONCLUSION The results indicate that anti-TIM-1 might offer a novel approach to treating asthma.
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Janssen EM, Droin NM, Lemmens EE, Pinkoski MJ, Bensinger SJ, Ehst BD, Griffith TS, Green DR, Schoenberger SP. CD4+ T-cell help controls CD8+ T-cell memory via TRAIL-mediated activation-induced cell death. Nature 2005; 434:88-93. [PMID: 15744305 DOI: 10.1038/nature03337] [Citation(s) in RCA: 472] [Impact Index Per Article: 24.8] [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: 10/25/2004] [Accepted: 12/17/2004] [Indexed: 12/25/2022]
Abstract
The 'help' provided by CD4+ T lymphocytes during the priming of CD8+ T lymphocytes confers a key feature of immune memory: the capacity for autonomous secondary expansion following re-encounter with antigen. Once primed in the presence of CD4+ T cells, 'helped' CD8+ T cells acquire the ability to undergo a second round of clonal expansion upon restimulation in the absence of T-cell help. 'Helpless' CD8+ T cells that are primed in the absence of CD4+ T cells, in contrast, can mediate effector functions such as cytotoxicity and cytokine secretion upon restimulation, but do not undergo a second round of clonal expansion. These disparate responses have features of being 'programmed', that is, guided by signals that are transmitted to naive CD8+ T cells during priming, which encode specific fates for their clonal progeny. Here we explore the instructional programme that governs the secondary response of CD8+ T cells and find that helpless cells undergo death by activation-induced cell death upon secondary stimulation. This death is mediated by tumour-necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL). Regulation of Trail expression can therefore account for the role of CD4+ T cells in the generation of CD8+ T cell memory and represents a novel mechanism for controlling adaptive immune responses.
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Affiliation(s)
- Edith M Janssen
- Division of Cellular Immunology, La Jolla Institute for Allergy and Immunology, 10355 Science Center Drive, San Diego, California 92121, USA
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40
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Hoebe K, Janssen EM, Kim SO, Alexopoulou L, Flavell RA, Han J, Beutler B. Upregulation of costimulatory molecules induced by lipopolysaccharide and double-stranded RNA occurs by Trif-dependent and Trif-independent pathways. Nat Immunol 2003; 4:1223-9. [PMID: 14625548 DOI: 10.1038/ni1010] [Citation(s) in RCA: 351] [Impact Index Per Article: 16.7] [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: 08/08/2003] [Accepted: 09/30/2003] [Indexed: 12/12/2022]
Abstract
Both lipopolysaccharide (LPS) and double-stranded RNA (dsRNA) are adjuvants for the adaptive immune response, inducing upregulation of costimulatory molecules (UCM) on antigen-presenting cells. Trif, an adapter protein that transduces signals from Toll-like receptor 4 (TLR4) and TLR3, permits the induction of many cytokines, including interferon-beta, which signals through the type I interferon receptor. We show here that LPS-induced UCM was strictly dependent on the TLR4-->Trif axis, whereas dsRNA-induced UCM was only partly dependent on the TLR3-->Trif axis. But both LPS- and dsRNA-induced UCM were entirely dependent on type I interferon receptor signaling. These findings show that UCM involves an autocrine or paracrine loop, and indicate that an alternative TLR3-independent, Trif-independent pathway contributes to dsRNA-induced UCM.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Adaptor Proteins, Vesicular Transport/physiology
- Adjuvants, Immunologic/pharmacology
- Animals
- Antigens, CD/drug effects
- Antigens, CD/immunology
- Antigens, Differentiation/immunology
- B7-1 Antigen/drug effects
- B7-1 Antigen/immunology
- B7-2 Antigen
- CD40 Antigens/drug effects
- CD40 Antigens/immunology
- Immunity, Cellular/physiology
- Lipopolysaccharides/pharmacology
- Macrophages/physiology
- Membrane Glycoproteins/drug effects
- Membrane Glycoproteins/immunology
- Membrane Proteins
- Mice
- Molecular Sequence Data
- Mutation
- Myeloid Differentiation Factor 88
- RNA, Double-Stranded/pharmacology
- Receptor, Interferon alpha-beta
- Receptors, Cell Surface/immunology
- Receptors, Immunologic/immunology
- Receptors, Interferon/immunology
- Signal Transduction/immunology
- Toll-Like Receptor 3
- Toll-Like Receptor 4
- Toll-Like Receptors
- Up-Regulation
- eIF-2 Kinase/immunology
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Affiliation(s)
- Kasper Hoebe
- The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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41
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Janssen EM, Lemmens EE, Wolfe T, Christen U, von Herrath MG, Schoenberger SP. CD4+ T cells are required for secondary expansion and memory in CD8+ T lymphocytes. Nature 2003; 421:852-6. [PMID: 12594515 DOI: 10.1038/nature01441] [Citation(s) in RCA: 1238] [Impact Index Per Article: 59.0] [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: 12/03/2002] [Accepted: 01/23/2003] [Indexed: 12/22/2022]
Abstract
A long-standing paradox in cellular immunology concerns the conditional requirement for CD4+ T-helper (T(H)) cells in the priming of cytotoxic CD8+ T lymphocyte (CTL) responses in vivo. Whereas CTL responses against certain viruses can be primed in the absence of CD4+ T cells, others, such as those mediated through 'cross-priming' by host antigen-presenting cells, are dependent on T(H) cells. A clearer understanding of the contribution of T(H) cells to CTL development has been hampered by the fact that most T(H)-independent responses have been demonstrated ex vivo as primary cytotoxic effectors, whereas T(H)-dependent responses generally require secondary in vitro re-stimulation for their detection. Here, we have monitored the primary and secondary responses of T(H)-dependent and T(H)-independent CTLs and find in both cases that CD4+ T cells are dispensable for primary expansion of CD8+ T cells and their differentiation into cytotoxic effectors. However, secondary CTL expansion (that is, a secondary response upon re-encounter with antigen) is wholly dependent on the presence of T(H) cells during, but not after, priming. Our results demonstrate that T-cell help is 'programmed' into CD8+ T cells during priming, conferring on these cells a hallmark of immune response memory: the capacity for functional expansion on re-encounter with antigen.
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Affiliation(s)
- Edith M Janssen
- Division of Cellular Immunology and Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, 10355 Science Center Drive, San Diego, California 92121, USA
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42
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Abstract
Cross-priming is an important mechanism of intercell transfer of antigenic material leading to the specific activation of cytotoxic T lymphocytes. Dendritic cells (DCs) are considered the central antigen-presenting cell in cross-priming. Here we decided to probe the role of the relB gene, a regulator of DC differentiation, in the in vivo cross-priming of a model tumour antigen, TAP(-/-) murine embryo cells (MEC), expressing human adenovirus type 5 early region 1. To this end, we used relB(-/-) mutant mice to generate bone marrow (BM) chimeras as these possess few residual DC but are capable of initiating CD4+ and CD8+ T-cell responses in vivo. Our results show that relB(-/-) BM chimeras are unable to cross-prime CD8+ T cells, suggesting that the relB gene regulates cross-priming.
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Affiliation(s)
- P Castiglioni
- Department of Medicine and Cancer Center, University of California, San Diego, La Jolla 92093-0837, USA
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43
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Janssen EM, Wauben MHM, Nijkamp FP, van Eden W, van Oosterhout AJM. Immunomodulatory effects of antigen-pulsed macrophages in a murine model of allergic asthma. Am J Respir Cell Mol Biol 2002; 27:257-64. [PMID: 12151319 DOI: 10.1165/ajrcmb.27.2.4788] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 12/24/2022] Open
Abstract
Macrophages (Mphi) play an unique role in the activation and regulation of T cells through their ability to modulate specific costimulatory and cytokine signals. Here we investigated the immunomodulatory effects of allergen presentation by Mphi in a murine model of allergic asthma. Purified peritoneal Mphi were pulsed with ovalbumin (OVA) (OVA-Mphi), or the immunodominant epitope OVA(323-339) (OVA(323-339)-Mphi), and characterized for cell surface markers, cytokine production, and antigen-presenting capacity toward OVA(323-339)-specific DO11.10 T cells. Antigen-pulsed Mphi were injected (intravenously) in OVA-sensitized Balb/c mice that were repeatedly challenged with OVA or saline aerosol. Administration of OVA-Mphi inhibited airway eosinophilia and hyperresponsiveness to methacholine concomitant with a reduced interleukin (IL)-4 and IL-5 production by T cells upon OVA stimulation in vitro. Interestingly, OVA-induced IL-10 levels remained unchanged, whereas interferon-gamma could not be detected. In contrast to OVA-Mphi, OVA(323-339)-Mphi administration had no effects on these asthma manifestations. Additional in vitro studies demonstrated that OVA-Mphi, but not OVA(323-339)-Mphi, produced high levels of IL-10 upon interaction with the DO11.10 T cells. This IL-10 production by the OVA-Mphi was dependent on MHC-TCR and CD86-CD28, but not CD80-CD28 or CD40-CD154 interactions. Our data suggest that IL-10 production by allergen presenting Mphi plays a crucial role in successful immunotherapy.
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Affiliation(s)
- Edith M Janssen
- Department of Pharmacology and Pathophysiology, Faculty of Pharmacy, Utrecht University, Utrecht, The Netherlands
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44
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Janssen EM, van Oosterhout AJ, Nijkamp FP, van Eden W, Wauben MH. The efficacy of immunotherapy in an experimental murine model of allergic asthma is related to the strength and site of T cell activation during immunotherapy. J Immunol 2000; 165:7207-14. [PMID: 11120853 DOI: 10.4049/jimmunol.165.12.7207] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In the present study, the relation between the efficacy of immunotherapy, and the strength and site of T cell activation during immunotherapy was evaluated. We used a model of allergic asthma in which OVA-sensitized and OVA-challenged mice display increased airway hyperresponsiveness, airway inflammation, and Th2 cytokine production by OVA-specific T cells. In this model, different immunotherapy strategies, including different routes of administration, or treatment with entire OVA or the immunodominant T cell epitope OVA(323-339), or treatment with a peptide analogue of OVA(323-339) with altered T cell activation capacity were studied. To gain more insight in how immunotherapy affects allergen-specific T cells, the site of Ag-specific T cell activation and the magnitude of the T cell response induced during different immunotherapy strategies were determined using an adoptive transfer model. Our data suggest that amelioration of airway hyperresponsiveness and inflammation is associated with the induction of a strong, synchronized, and systemic T cell response, resulting in a decreased OVA-specific Th2 response. In contrast, deterioration of the disease after immunotherapy is associated with the induction of a weak nonsynchronized T cell response, resulting in the enhancement of the OVA-specific Th2 response after challenge.
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Affiliation(s)
- E M Janssen
- Institute of Infectious Diseases and Immunology, Department of Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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45
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Janssen EM, van Oosterhout AJ, van Rensen AJ, van Eden W, Nijkamp FP, Wauben MH. Modulation of Th2 responses by peptide analogues in a murine model of allergic asthma: amelioration or deterioration of the disease process depends on the Th1 or Th2 skewing characteristics of the therapeutic peptide. J Immunol 2000; 164:580-8. [PMID: 10623798 DOI: 10.4049/jimmunol.164.2.580] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Allergen-specific CD4+ Th2 cells play an important role in the immunological processes of allergic asthma. Previously we have shown that, by using the immunodominant epitope OVA323-339, peptide immunotherapy in a murine model of OVA induced allergic asthma, stimulated OVA-specific Th2 cells, and deteriorated airway hyperresponsiveness and eosinophilia. In the present study, we defined four modulatory peptide analogues of OVA323-339 with comparable MHC class II binding affinity. These peptide analogues were used for immunotherapy by s.c. injection in OVA-sensitized mice before OVA challenge. Compared with vehicle-treated mice, treatment with the Th2-skewing wild-type peptide and a Th2-skewing partial agonistic peptide (335N-A) dramatically increased airway eosinophilia upon OVA challenge. In contrast, treatment with a Th1-skewing peptide analogue (336E-A) resulted in a significant decrease in airway eosinophilia and OVA-specific IL-4 and IL-5 production. Our data show for the first time that a Th1-skewing peptide analogue of a dominant allergen epitope can modulate allergen-specific Th2 effector cells in an allergic response in vivo. Furthermore, these data suggest that the use of Th1-skewing peptides instead of wild-type peptide may improve peptide immunotherapy and may contribute to the development of a successful and safe immunotherapy for allergic patients.
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Affiliation(s)
- E M Janssen
- Institute of Infectious Diseases, Department of Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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Janssen EM, Wauben MH, Jonker EH, Hofman G, Van Eden W, Nijkamp FP, Van Oosterhout AJ. Opposite effects of immunotherapy with ovalbumin and the immunodominant T-cell epitope on airway eosinophilia and hyperresponsiveness in a murine model of allergic asthma. Am J Respir Cell Mol Biol 1999; 21:21-9. [PMID: 10385589 DOI: 10.1165/ajrcmb.21.1.3519] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [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: 11/24/2022] Open
Abstract
In the present study, we investigated immunotherapy using an entire protein or an immunodominant epitope in a murine model of allergic asthma. Immunotherapy was performed in ovalbumin (OVA)-sensitized mice before OVA challenge. Mice were treated subcutaneously with OVA, the immunodominant epitope OVA323-339, or vehicle. In vehicle-treated animals, repeated OVA challenge induced increased serum levels of OVA-specific immunoglobulin (Ig)G1, IgE, airway eosinophilia, and hyperresponsiveness, compared with saline-challenged animals. In addition, interleukin (IL)-4 and IL-5 production upon OVA restimulation of lung-draining lymph node cells in vitro were significantly increased in OVA-challenged animals. Immunotherapy using OVA significantly reduced airway eosinophilia and hyperresponsiveness. This finding was accompanied by significantly reduced OVA-specific IL-4 and IL-5 production. Further, OVA immunotherapy induced increased serum levels of OVA-specific IgG1, whereas OVA-specific IgG2a and IgE levels were not affected. In contrast to OVA immunotherapy, immunotherapy with OVA323-339 aggravated airway eosinophilia and hyperresponsiveness. OVA-specific IgG1, IgG2a, and IgE serum levels, and in vitro IL-4 and IL-5 production, were not affected. Thus, immunotherapy with protein resulted in beneficial effects on airway eosinophilia and hyperresponsiveness, which coincided with a local reduced T-helper 2 (Th2) response. In contrast, peptide immunotherapy aggravated airway hyperresponsiveness and eosinophilia, indicating a local enhanced Th2 response.
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Affiliation(s)
- E M Janssen
- Department of Pharmacology and Pathophysiology, Faculty of Pharmacy, Institute of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands
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Ponjee GA, Janssen EM, Hermans J, van Wersch JW. Regular physical activity and changes in risk factors for coronary heart disease: a nine months prospective study. Eur J Clin Chem Clin Biochem 1996; 34:477-83. [PMID: 8831049 DOI: 10.1515/cclm.1996.34.6.477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This study reports the non-acute effects of a long-term training programme of increasing intensity on some cardiovascular risk factors and the interrelation between these risk factors. Twenty sedentary men and 14 sedentary women were trained 3 to 4 times a week for nine months. After 36 weeks all individuals ran a half marathon run. The Wmax, weight, body mass index, systolic and diastolic blood pressure were recorded. The concentrations of fibrinogen, tissue plasminogen activator, plasminogen activator inhibitor, triacylglycerols, total cholesterol, LDL cholesterol, HDL cholesterol and lipoprotein(a) were measured. The training programme induced a median increase in Wmax of 12% in the male group (from 226 to 251.5 Watt) and of 18% in the female group (from 160 to 188.5 Watt). These increases inn Wmax did not correlate with any other property under investigation in this study. Blood pressure was not altered, but body weight and body mass index were significantly decreased in the male group (from 74.6 to 72.2 kg and from 23.1 to 22.0 kg/m2, respectively) at the end of the training programme and decreased non-significantly in the female group (from 63.0 to 60.7 kg and from 21.6 to 21.5 kg/m2, respectively). In the male group total cholesterol, low density lipoprotein cholesterol and triacylglycerols decreased significantly under the influence of the training sessions. Furthermore, in both groups, a great decrease in plasma plasminogen activator inhibitor concentrations was noticed: in men from 22.5.10(3) AU/l to 4.5.10(3) AU/l and in women from 18.7 x 10(3) AU/l to 5.1 x 10(3) AU/l. However, the changes in the lipid and fibrinolytic quantities were not correlated with each other. Initial total cholesterol, LDL cholesterol and triacylglycerol levels correlated significantly with systolic blood pressure, while diastolic pressure was correlated to tissue plasminogen activator. Since tissue plasminogen activator also was significantly related to triacylglycerols, a trias existed between primary risk factors like blood pressure, lipid levels and fibrinolysis. In contrast, the changes in these properties under the influence of physical training were not interrelated. Median serum lipoprotein(a) concentrations were significantly increased in both men and women five days before the half marathon run: from 32 mg/l to 39 mg/l in men, and from 65 mg/l to 125.5 mg/l in women. Concomitantly, median fibrinogen concentrations were significantly elevated in men (from 2.32 g/l to 3.10 g/l) and non-significantly in women (from 2.62 g/l to 2.93 g/l), although no correlation existed between the changes in these properties. In conclusion, the nine months exercise programme increased the aerobic fitness in both men and women as indicated by the Wmax increase. This improvement coincided but was not correlated with beneficial changes in several anthropometric, lipid and fibrinolytic properties. Improvement in the risk factors under investigation was more pronounced in men than in women. The changes in lipid and haemostasis properties did not correlate with each other. The increases in lipoprotein(a) and fibrinogen concentrations, both atherogenic indices, could actually present a normal physiological response to the physical strain of exercise training of increasing workload.
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Affiliation(s)
- G A Ponjee
- Diagnostisch Centrum SSDZ, Delft, The Netherlands
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Ponjee GA, Janssen EM, van Wersch JW. Long-term physical exercise and lipoprotein(a) levels in a previously sedentary male and female population. Ann Clin Biochem 1995; 32 ( Pt 2):181-5. [PMID: 7785946 DOI: 10.1177/000456329503200208] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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: 01/27/2023]
Abstract
We investigated the effect of long-term physical exercise on serum lipoprotein(a) levels. 21 sedentary men and 15 sedentary women were trained three to four times a week with increasing intensity during 9 months. After 24 weeks all subjects ran a 15 km race and after 36 weeks a half marathon run (21 km). Blood samples were drawn before the training programme, 5 days before both races and 5 days after the half marathon run. Median (interquartile range) pre-training values in the male group were 32 (11-63) mg/L and in the female group 65 (23-199) mg/L. After 24 weeks of training, serum lipoprotein(a) concentrations had risen significantly in both male and female groups. Moreover, after 36 weeks of training, in preparation for the half marathon competition, median serum lipoprotein(a) rose almost twofold in both groups and was still elevated 5 days later. This study demonstrates that an exercise programme which includes running of increasing distances significantly increases serum lipoprotein(a) concentration.
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Affiliation(s)
- G A Ponjee
- Diagnostic Centre SSDZ Delft, Department of Hematology, The Netherlands
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Ponjee GA, Janssen EM, Hermans J, van Wersch JW. Effects of long-term exercise of moderate intensity on anthropometric values and serum lipids and lipoproteins. Eur J Clin Chem Clin Biochem 1995; 33:121-6. [PMID: 7605823 DOI: 10.1515/cclm.1995.33.3.121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The influence of endurance training on serum lipids and lipoproteins was investigated in 20 sedentary males and 14 sedentary females. The total group was trained 3 to 4 times a week for 9 months. After 24 weeks all subjects ran a 15 km-race and after 36 weeks a half-marathon (21 km) race. Anthropometric values were determined before and after the training programme. Blood samples were drawn before the start of the training programme and, in order to avoid the measurement of acute effects, 5 days before both races. In the male group, median body weight and body mass were significantly decreased (p < 0.01) after nine months of training, while in the female group body weight and body mass index remained essentially unchanged. Percentage body fat, measured by skinfold thickness was significantly decreased in both groups at the end of the training programme. During the training period, median serum total cholesterol, low density lipid cholesterol and triacylglycerol concentrations decreased significantly (p < 0.01) in the male group, while in the female population the median serum lipid- and lipoprotein concentrations did not differ from pre-training values. The changes in serum lipids or lipoproteins did not correlate significantly with changes in body weight, body mass index or percentage body fat. Stepwise multiple regression showed that these changes were mostly dependent on initial concentrations in serum. Finally, no significant increase in median high density lipid cholesterol was observed in either the male or female group.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- G A Ponjee
- Diagnostisch Centrum SSDZ, Delft, The Netherlands
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50
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Westerterp KR, Meijer GA, Schoffelen P, Janssen EM. Body mass, body composition and sleeping metabolic rate before, during and after endurance training. Eur J Appl Physiol Occup Physiol 1994; 69:203-8. [PMID: 8001530 DOI: 10.1007/bf01094789] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Metabolic rate, more specifically resting metabolic rate (RMR) or sleeping metabolic rate (SMR), of an adult subject is usually expressed as a function of the fat-free mass (FFM). Chronic exercise is thought to increase FFM and thus to increase RMR and SMR. We determined body mass (BM), body composition, and SMR before, during, and after an endurance training programme without interfering with energy intake. The subjects were 11 women and 12 men, aged 37 (SD 3) years and body mass index 22.3 (SD 1.5) kg.m-2. The endurance training prepared subjects to run a half marathon competition after 44 weeks. The SMR was measured overnight in a respiration chamber. Body composition was measured by hydrostatic weighing. Measurements were performed at 0, 8, 20, 40, and 90 weeks after the start of the training. The BM had decreased from a mean value of 66.6 (SD 6.9) to 65.6 (SD 6.7) kg (P < 0.01), fat mass (FM) had decreased from 17.1 (SD 3.9) to 13.5 (SD 3.6) kg (P < 0.001), and FFM had increased from 49.5 (SD 7.3) to 52.2 (SD 7.6) kg (P < 0.001) at 40 weeks. Mean SMR before and after 40 weeks training was 6.5 (SD 0.7) and 6.2 (SD 0.6) MJ.day-1 (P < 0.05). The decrease in SMR was related to the decrease in BM (r = 0.62, P = 0.001). At 90 weeks, when most subjects had not trained for nearly a year, BM and SMR were not significantly different from the initial value while FM and FFM had not changed since week 40 of training.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- K R Westerterp
- Department of Human Biology, University of Limburg, Maastricht, The Netherlands
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