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Chauché C, Rasid O, Donachie A, McManus CM, Löser S, Campion T, Richards J, Smyth DJ, McSorley HJ, Maizels RM. Suppression of airway allergic eosinophilia by Hp-TGM, a helminth mimic of TGF-β. Immunology 2022; 167:197-211. [PMID: 35758054 PMCID: PMC9885513 DOI: 10.1111/imm.13528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/20/2022] [Indexed: 02/02/2023] Open
Abstract
Type 2-high asthma is a chronic inflammatory disease of the airways which is increasingly prevalent in countries where helminth parasite infections are rare, and characterized by T helper 2 (Th2)-dependent accumulation of eosinophils in the lungs. Regulatory cytokines such as TGF-β can restrain inflammatory reactions, dampen allergic Th2 responses, and control eosinophil activation. The murine helminth parasite Heligmosomoides polygyrus releases a TGF-β mimic (Hp-TGM) that replicates the biological and functional properties of TGF-β despite bearing no structural similarity to the mammalian protein. Here, we investigated if Hp-TGM could alleviate allergic airway inflammation in mice exposed to Alternaria alternata allergen, house dust mite (HDM) extract or alum-adjuvanted ovalbumin protein (OVA). Intranasal administration of Hp-TGM during Alternaria exposure sharply reduced airway and lung tissue eosinophilia along with bronchoalveolar lavage fluid IL-5 and lung IL-33 cytokine levels at 24 h. The protective effect of Hp-TGM on airway eosinophilia was also obtained in the longer T-cell mediated models of HDM or OVA sensitisation with significant inhibition of eotaxin-1, IL-4 and IL-13 responses depending on the model and time-point. Hp-TGM was also protective when administered parenterally either when given at the time of allergic sensitisation or during airway allergen challenge. This project has taken the first steps in identifying the role of Hp-TGM in allergic asthma and highlighted its ability to control lung inflammation and allergic pathology. Future research will investigate the mode of action of Hp-TGM against airway allergic eosinophilia, and further explore its potential to be developed as a biotherapeutic in allergic asthma.
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Affiliation(s)
- Caroline Chauché
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK,Centre for Inflammation ResearchUniversity of Edinburgh, Queen's Medical Research InstituteEdinburghUK
| | - Orhan Rasid
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
| | - Anne‐Marie Donachie
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
| | - Caitlin M. McManus
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
| | - Stephan Löser
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
| | - Tiffany Campion
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
| | - Josh Richards
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK,Division of Cell Signalling and ImmunologySchool of Life Sciences, Wellcome Trust Building, University of DundeeDundeeUK
| | - Danielle J. Smyth
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK,Division of Cell Signalling and ImmunologySchool of Life Sciences, Wellcome Trust Building, University of DundeeDundeeUK
| | - Henry J. McSorley
- Division of Cell Signalling and ImmunologySchool of Life Sciences, Wellcome Trust Building, University of DundeeDundeeUK
| | - Rick M. Maizels
- Wellcome Centre for Integrative ParasitologyInstitute of Infection, Immunity and Inflammation, University of GlasgowGlasgowUK
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Felton JM, Vallabh S, Parameswaran S, Edsall LE, Ernst K, Wronowski B, Malik A, Kotliar M, Weirauch MT, Barski A, Fulkerson PC, Rothenberg ME. Epigenetic Analysis of the Chromatin Landscape Identifies a Repertoire of Murine Eosinophil-Specific PU.1-Bound Enhancers. THE JOURNAL OF IMMUNOLOGY 2021; 207:1044-1054. [PMID: 34330753 DOI: 10.4049/jimmunol.2000207] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/07/2021] [Indexed: 12/20/2022]
Abstract
Eosinophils develop in the bone marrow from hematopoietic progenitors into mature cells capable of a plethora of immunomodulatory roles via the choreographed process of eosinophilopoiesis. However, the gene regulatory elements and transcription factors (TFs) orchestrating this process remain largely unknown. The potency and resulting diversity fundamental to an eosinophil's complex immunomodulatory functions and tissue specialization likely result from dynamic epigenetic regulation of the eosinophil genome, a dynamic eosinophil regulome. In this study, we applied a global approach using broad-range, next-generation sequencing to identify a repertoire of eosinophil-specific enhancers. We identified over 8200 active enhancers located within 1-20 kB of expressed eosinophil genes. TF binding motif analysis revealed PU.1 (Spi1) motif enrichment in eosinophil enhancers, and chromatin immunoprecipitation coupled with massively parallel sequencing confirmed PU.1 binding in likely enhancers of genes highly expressed in eosinophils. A substantial proportion (>25%) of these PU.1-bound enhancers were unique to murine, culture-derived eosinophils when compared among enhancers of highly expressed genes of three closely related myeloid cell subsets (macrophages, neutrophils, and immature granulocytes). Gene ontology analysis of eosinophil-specific, PU.1-bound enhancers revealed enrichment for genes involved in migration, proliferation, degranulation, and survival. Furthermore, eosinophil-specific superenhancers were enriched in genes whose homologs are associated with risk loci for eosinophilia and allergic diseases. Our collective data identify eosinophil-specific enhancers regulating key eosinophil genes through epigenetic mechanisms (H3K27 acetylation) and TF binding (PU.1).
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Affiliation(s)
- Jennifer M Felton
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Sushmitha Vallabh
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Sreeja Parameswaran
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Lee E Edsall
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Kevin Ernst
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Benjamin Wronowski
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Astha Malik
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Michael Kotliar
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Matthew T Weirauch
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH.,Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; and
| | - Artem Barski
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH.,Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Patricia C Fulkerson
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Marc E Rothenberg
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; .,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
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3
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Simon SCS, Hu X, Panten J, Grees M, Renders S, Thomas D, Weber R, Schulze TJ, Utikal J, Umansky V. Eosinophil accumulation predicts response to melanoma treatment with immune checkpoint inhibitors. Oncoimmunology 2020; 9:1727116. [PMID: 32117594 PMCID: PMC7028332 DOI: 10.1080/2162402x.2020.1727116] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 01/03/2023] Open
Abstract
Eosinophils have been identified as a prognostic marker in immunotherapy of melanoma and suggested to contribute to anti-tumor host defense. However, the influence of immune checkpoint inhibitors (ICI) on the eosinophil population is poorly studied. Here, we applied routine laboratory tests, multicolor flow cytometry, RNA microarray analysis, and bio-plex assay to analyze circulating eosinophils and related serum inflammatory factors in 32 patients treated with pembrolizumab or the combination of nivolumab and ipilimumab. We demonstrated that clinical responses to ICI treatment were associated with an eosinophil accumulation in the peripheral blood. Moreover, immunotherapy led to the alteration of the eosinophil genetic and activation profile. Elevated serum concentrations of IL-16 during ICI treatment were found to be associated with increased frequencies of eosinophils in the peripheral blood. Using immunohistochemistry, we observed an enhanced eosinophil degranulation and a positive correlation between eosinophil and CD8+ T cell infiltration of tumor tissues from melanoma patients treated with ICI. Our findings highlight additional mechanisms of ICI effects and suggest the level of eosinophils as a novel predictive marker for melanoma patients who may benefit from this immunotherapy.
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Affiliation(s)
- Sonja C S Simon
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Xiaoying Hu
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Jasper Panten
- Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Research Group Hematopoietic and Leukemic Stem Cells, Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Heidelberg, Germany
| | - Mareike Grees
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Simon Renders
- Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Research Group Hematopoietic and Leukemic Stem Cells, Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Heidelberg, Germany
| | - Daniel Thomas
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Rebekka Weber
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany.,Faculty of Biosciences, Ruprecht-Karl University of Heidelberg, Heidelberg, Germany
| | - Torsten J Schulze
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Department of Diagnostics, Institute Springe, Springe, Germany
| | - Jochen Utikal
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Viktor Umansky
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
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Kelly A, Houston SA, Sherwood E, Casulli J, Travis MA. Regulation of Innate and Adaptive Immunity by TGFβ. Adv Immunol 2017; 134:137-233. [PMID: 28413021 DOI: 10.1016/bs.ai.2017.01.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Immune regulation by cytokines is crucial in maintaining immune homeostasis, promoting responses to infection, resolving inflammation, and promoting immunological memory. Additionally, cytokine responses drive pathology in immune-mediated disease. A crucial cytokine in the regulation of all aspects of an immune response is transforming growth factor beta (TGFβ). Although best known as a crucial regulator of T cell responses, TGFβ plays a vital role in regulating responses mediated by virtually every innate and adaptive immune cell, including dendritic cells, B cells, NK cells, innate lymphoid cells, and granulocytes. Here, we review our current knowledge of how TGFβ regulates the immune system, highlighting the multifunctional nature of TGFβ and how its function can change depending on location and context of action.
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Affiliation(s)
- Aoife Kelly
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, United Kingdom; Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom; Manchester Immunology Group, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Stephanie A Houston
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, United Kingdom; Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom; Manchester Immunology Group, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Eleanor Sherwood
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, United Kingdom; Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom; Manchester Immunology Group, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Joshua Casulli
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, United Kingdom; Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom; Manchester Immunology Group, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Mark A Travis
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, United Kingdom; Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom; Manchester Immunology Group, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
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5
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Panek M, Jonakowski M, Zioło J, Wieteska Ł, Małachowska B, Pietras T, Szemraj J, Kuna P. A novel approach to understanding the role of polymorphic forms of the NR3C1 and TGF-β1 genes in the modulation of the expression of IL-5 and IL-15 mRNA in asthmatic inflammation. Mol Med Rep 2016; 13:4879-87. [PMID: 27081784 DOI: 10.3892/mmr.2016.5104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 01/13/2016] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to identify polymorphic forms of the nuclear receptor subfamily 3, group C, member 1 (NR3C1) and transforming growth factor β1 (TGF-β1) genes and evaluate their impact on the expression levels of interleukin (IL)-5 and IL‑15 in asthma. The study was conducted on a control group consisting of 91 people (54 women and 37 men). The patient group consisted of 130 participants (86 women and 44 men). Genotyping was performed by polymerase chain reaction‑restriction fragment length polymorphism (PCR‑RFLP) and PCR‑high resolution melting (HRM) methods. Interleukin expression was measured by reverse transcription‑quantitative polymerase chain reaction. The frequency of the polymorphic forms in the analyzed group were observed to be: Tth111I (rs10052957) controls AA 0.0440, AG 0.5714, GG 0.3846, patients AA 0.1538/AG 0.4692, GG 0.3769; ER22/23EK (rs6189 /rs6190) controls AG 0.0556, GG 0.9444, patients AG 0.0385, GG 0.9615; N363S (rs6195) controls AA 0.6444, AG 0.2667, GG 0.0889, patients AA 0.7846, AG 0.1385, GG 0.0769; BclI (rs41423247) controls CC 0.0879, CG 0.5604, GG 0.3516, patients CC 0.1008, CG 0.5736, GG 0.3256; C‑509T (rs1800469) controls TT 0.0805, CT 0.6322, CC 0.2874, patients TT 0.1102, CT 0.5669, CC 0.3228. The results indicated that the C‑509T single nucleotide polymorphism (SNP) of the TGF-β1 gene contributed to an increase in the IL‑5 mRNA expression levels. The GG genotype of the N363S SNP of the NR3C1 gene was observed to result in an increase in the expression levels of IL‑15. The present study indicated that the selected SNPs of the NR3C1 and TGF‑β1 genes demonstrate a regulatory effect on the expression of IL‑5 and IL‑15. Therefore, genetic variation affects inflammation in asthma and the clinical course of the disease.
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Affiliation(s)
- Michał Panek
- Department of Internal Medicine, Asthma and Allergy, Medical University of Lodz, Lodz 90‑153, Poland
| | - Mateusz Jonakowski
- Students Research Group, The Department of Internal Medicine, Asthma and Allergy, Medical University of Lodz, Lodz 90‑153, Poland
| | - Jan Zioło
- Students Research Group, The Department of Internal Medicine, Asthma and Allergy, Medical University of Lodz, Lodz 90‑153, Poland
| | - Łukasz Wieteska
- Department of Medical Biochemistry, Medical University of Lodz, Lodz 92‑215, Poland
| | - Beata Małachowska
- Department of Pediatrics, Oncology, Hematology and Diabetology of Medical University of Lodz, Lodz 91‑738, Poland
| | - Tadeusz Pietras
- Department of Pneumology and Allergology, Medical University of Lodz, Lodz 90‑153, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, Lodz 92‑215, Poland
| | - Piotr Kuna
- Department of Internal Medicine, Asthma and Allergy, Medical University of Lodz, Lodz 90‑153, Poland
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Shen ZJ, Malter JS. Determinants of eosinophil survival and apoptotic cell death. Apoptosis 2015; 20:224-34. [PMID: 25563855 DOI: 10.1007/s10495-014-1072-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Eosinophils (Eos) are potent inflammatory cells and abundantly present in the sputum and lung of patients with allergic asthma. During both transit to and residence in the lung, Eos contact prosurvival cytokines, particularly IL-3, IL-5 and GM-CSF, that attenuate cell death. Cytokine signaling modulates the expression and function of a number of intracellular pro- and anti-apoptotic molecules. Both intrinsic mitochondrial and extrinsic receptor-mediated pathways are affected. This article discusses the fundamental role of the extracellular and intracellular molecules that initiate and control survival decisions by human Eos and highlights the role of the cis-trans isomerase, Pin1 in controlling these processes.
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Affiliation(s)
- Zhong-Jian Shen
- Department of Pathology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-9072, USA,
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7
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RNA Seq profiling reveals a novel expression pattern of TGF-β target genes in human blood eosinophils. Immunol Lett 2015; 167:1-10. [PMID: 26112417 DOI: 10.1016/j.imlet.2015.06.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/05/2015] [Accepted: 06/15/2015] [Indexed: 12/16/2022]
Abstract
Despite major advances in our understanding of TGF-β signaling in multiple cell types, little is known about the direct target genes of this pathway in human eosinophils. These cells constitute the major inflammatory component present in the sputum and lung of active asthmatics and their numbers correlate well with disease severity. During the transition from acute to chronic asthma, TGF-β levels rise several fold in the lung which drives fibroblasts to produce extracellular matrix (ECM) and participate in airway and parenchymal remodeling. In this report, we use purified blood eosinophils from healthy donors and analyze baseline and TGF-β responsive genes by RNA Seq, and demonstrate that eosinophils (PBE) express 7981 protein-coding genes of which 178 genes are up-regulated and 199 genes are down-regulated by TGF-β. While 18 target genes have been previously associated with asthma and eosinophilic disorders, the vast majority have been implicated in cell death and survival, differentiation, and cellular function. Ingenuity pathway analysis revealed that 126 canonical pathways are activated by TGF-β including iNOS, TREM1, p53, IL-8 and IL-10 signaling. As TGF-β is an important cytokine for eosinophil function and survival, and pulmonary inflammation and fibrosis, our results represent a significant step toward the identification of novel TGF-β responsive genes and provide a potential therapeutic opportunity by selectively targeting relevant genes and pathways.
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Kim DY, Kwon EY, Hong GU, Lee YS, Lee SH, Ro JY. Cigarette smoke exacerbates mouse allergic asthma through Smad proteins expressed in mast cells. Respir Res 2011; 12:49. [PMID: 21496353 PMCID: PMC3098800 DOI: 10.1186/1465-9921-12-49] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Accepted: 04/18/2011] [Indexed: 11/10/2022] Open
Abstract
Background Many studies have found that smoking reduces lung function, but the relationship between cigarette smoke and allergic asthma has not been clearly elucidated, particularly the role of mast cells. This study aimed to investigate the effects of smoke exposure on allergic asthma and its association with mast cells. Methods BALB/c mice were sensitized and challenged by OVA to induce asthma, and bone marrow-derived mast cells (BMMCs) were stimulated with antigen/antibody reaction. Mice or BMMCs were exposed to cigarette smoke or CSE solution for 1 mo or 6 h, respectively. The recruitment of inflammatory cells into BAL fluid or lung tissues was determined by Diff-Quik or H&E staining, collagen deposition by Sircol assay, penh values by a whole-body plethysmography, co-localization of tryptase and Smad3 by immunohistochemistry, IgE and TGF-β level by ELISA, expressions of Smads proteins, activities of signaling molecules, or TGF-β mRNA by immunoblotting and RT-PCR. Results Cigarette smoke enhanced OVA-specific IgE levels, penh values, recruitment of inflammatory cells including mast cells, expressions of smad family, TGF-β mRNA and proteins, and cytokines, phosphorylations of Smad2 and 3, and MAP kinases, co-localization of tryptase and Smad3, and collagen deposition more than those of BAL cells and lung tissues of OVA-induced allergic mice. CSE solution pretreatment enhanced expressions of TGF-β, Smad3, activities of MAP kinases, NF-κB/AP-1 or PAI-1 more than those of activated-BMMCs. Conclusions The data suggest that smoke exposure enhances antigen-induced mast cell activation via TGF-β/Smad signaling pathways in mouse allergic asthma, and that it exacerbates airway inflammation and remodeling.
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Affiliation(s)
- Dae Yong Kim
- Department of Pharmacology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-726, Korea
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Xie Q, Shen ZJ, Oh J, Chu H, Malter JS. Transforming Growth Factor- β1 Antagonizes Interleukin-5 Pro-Survival Signaling by Activating Calpain-1 in Primary Human Eosinophils. ACTA ACUST UNITED AC 2011; Suppl 1. [PMID: 24244891 DOI: 10.4172/2155-9899.s1-003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Eosinophils rapidly undergo apoptosis unless exposed to prosurvival cytokines such as interleukin 5 (IL-5) or granulocyte-macrophage colony stimulating factor (GM-CSF). In vivo, eosinophils are exposed to TGF-β 1 which can induce apoptosis suggesting it may function to counteract the effects of IL-5 or GM-CSF and limit, in vivo tissue eosinophilia. OBJECTIVE The objective of this study was to investigate the proapoptotic effects of TGF-β alone and in combination with IL-5 on eosinophils. METHODS Peripheral blood eosinophil (PBEos) viability was assessed using flow cytometry after exposure to TGF-β1 and IL-5. Calpain-1 activation was determined in cell extracts by western blot analysis of endogenous substrates and with a fluorogenic α-spectrin substrate. Molecular interactions between calpain1 and calpastatin were assessed by immunoprecipitation and western blotting. RESULTS Physiologic concentrations of TGF-β1 significantly antagonized the prosurvival effects of IL-5. TGF-β1-induced apoptosis was suppressed by inhibitors of calpain, or its downstream target, caspase 3. TGF-β1 signaling through Smad3 was unaffected by IL-5 and was required for the pro-apoptotic effects of TGF-β1. However, IL-5 induced Akt phosphorylation was inhibited by TGF-β1 and was associated with accelerated calpain cleavage and eosinophil death. CONCLUSION TGF-β1 induces calpain-1 activation through antagonism of Akt which induces caspase activation and eosinophil apoptosis.
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Affiliation(s)
- Qifa Xie
- Department of Pathology, UT Southwestern Medical Center, Dallas, USA
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10
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Okamoto T, Inozume T, Mitsui H, Kanzaki M, Harada K, Shibagaki N, Shimada S. Overexpression of GRIM-19 in Cancer Cells Suppresses STAT3-Mediated Signal Transduction and Cancer Growth. Mol Cancer Ther 2010; 9:2333-43. [DOI: 10.1158/1535-7163.mct-09-1147] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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T cell receptor-mediated signaling induces GRP78 expression in T cells: The implications in maintaining T cell viability. Biochem Biophys Res Commun 2008; 371:762-6. [DOI: 10.1016/j.bbrc.2008.04.132] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2008] [Accepted: 04/23/2008] [Indexed: 11/20/2022]
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12
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Kremer M, Perry AW, Milton RJ, Rippe RA, Wheeler MD, Hines IN. Pivotal role of Smad3 in a mouse model of T cell-mediated hepatitis. Hepatology 2008; 47:113-26. [PMID: 18023023 DOI: 10.1002/hep.21956] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
UNLABELLED Transforming growth factor beta (TGFbeta) promotes hepatocellular apoptosis and suppresses hepatic lymphocyte responses in part through activation of Smad3. The purpose of the current study was to determine the importance of Smad3 signaling in an experimental model of autoimmune hepatitis induced by concanavalin A (ConA), a process involving T cell activation and hepatocellular apoptosis. C57Bl/6 wild-type (Wt) or Smad3-deficient (Smad3(-/-)) mice were injected intravenously with 15 mg/kg ConA or vehicle. Nine hours post ConA injection, Wt mice presented with severe hepatitis as assessed by increased liver transferases. This injury was associated with eosinophil accumulation and preceded at 3 hours post-injection by significant increases in hepatic T helper 1 (interferon gamma) and T helper 2 (interleukin-4) cytokine production. Absence of Smad3 significantly blunted hepatocellular injury 9 hours post ConA injection, which was associated with reduced early T helper 1 and T helper 2 cytokine production and eosinophil accumulation. Smad3(-/-) livers also showed significant reductions in hepatocellular apoptosis as assessed by terminal UTP nick-end labeling when compared to ConA-treated Wt mice in conjunction with reduced caspase 3 cleavage, which was likely mediated by a Smad3-dependent inhibition of the survival factor extracellular signal-regulated kinase 1/2. In vitro, Smad3(-/-) hepatocytes were resistant to TGFbeta-induced apoptosis, and this protection was dependent on extracellular signal-regulated kinase activation. CONCLUSION Together, these results show, for the first time, the significance of Smad3 signaling in autoimmune hepatitis, underlining the control of Smad3-dependent TGFbeta signaling on proinflammatory cytokine production, eosinophil recruitment, and hepatocellular apoptosis. Interruption of this pathway could be beneficial clinically to limit acute fulminant liver pathologies.
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Affiliation(s)
- Michael Kremer
- Center for Alcohol Studies, University of North Carolina, Chapel Hill, NC 27599, USA.
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