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Yu W, Ilyas I, Hu X, Xu S, Yu H. Therapeutic potential of paeoniflorin in atherosclerosis: A cellular action and mechanism-based perspective. Front Immunol 2022; 13:1072007. [PMID: 36618414 PMCID: PMC9811007 DOI: 10.3389/fimmu.2022.1072007] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022] Open
Abstract
Epidemiological studies have shown that the incidence, prevalence and mortality of atherosclerotic cardiovascular disease (ASCVD) are increasing globally. Atherosclerosis is characterized as a chronic inflammatory disease which involves inflammation and immune dysfunction. P. lactiflora Pall. is a plant origin traditional medicine that has been widely used for the treatment of various diseases for more than a millennium in China, Japan and Korean. Paeoniflorin is a bioactive monomer extracted from P. lactiflora Pall. with anti-atherosclerosis effects. In this article, we comprehensively reviewed the potential therapeutic effects and molecular mechanism whereby paeoniflorin protects against atherosclerosis from the unique angle of inflammation and immune-related pathway dysfunction in vascular endothelial cells, smooth muscle cells, monocytes, macrophages, platelets and mast cells. Paeoniflorin, with multiple protective effects in atherosclerosis, has the potential to be used as a promising therapeutic agent for the treatment of atherosclerosis and its complications. We conclude with a detailed discussion of the challenges and future perspective of paeoniflorin in translational cardiovascular medicine.
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Affiliation(s)
- Wei Yu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui, China,Center for Drug Research and Development, Anhui Renovo Pharmaceutical Co., Ltd, Center for Drug Research and Development, Hefei, Anhui, China
| | - Iqra Ilyas
- Department of Endocrinology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Xuerui Hu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Suowen Xu
- Department of Endocrinology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Hui Yu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Materials Laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, Tianjin, China,*Correspondence: Hui Yu,
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2
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Korver W, Wong A, Gebremeskel S, Negri GL, Schanin J, Chang K, Leung J, Benet Z, Luu T, Brock EC, Luehrsen K, Xu A, Youngblood BA. The Inhibitory Receptor Siglec-8 Interacts With FcεRI and Globally Inhibits Intracellular Signaling in Primary Mast Cells Upon Activation. Front Immunol 2022; 13:833728. [PMID: 35154156 PMCID: PMC8837033 DOI: 10.3389/fimmu.2022.833728] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/11/2022] [Indexed: 12/13/2022] Open
Abstract
Immunomodulation of mast cell (MC) activity is warranted in allergic and inflammatory diseases where MCs have a central role in pathogenesis. Targeting Siglec-8, an inhibitory receptor on MCs and eosinophils, has shown promising activity in preclinical and clinical studies. While the intracellular pathways that regulate Siglec-8 activity in eosinophils have been well studied, the signaling mechanisms that lead to MC inhibition have not been fully elucidated. Here, we evaluate the intracellular signaling pathways of Siglec-8-mediated inhibition in primary MCs using an anti-Siglec-8 monoclonal antibody (mAb). Phospho-proteomic profiling of FcεRI-activated MCs revealed Siglec-8 mAb-treatment globally inhibited proximal and downstream kinases, leading to attenuated MC activation and degranulation. In fact, Siglec-8 was found to directly interact with FcεRI signaling molecules. Siglec-8 inhibition was dependent on both cytoplasmic immunoreceptor tyrosine-based inhibitory motifs (ITIMs) that interact with the SH2 containing protein phosphatase Shp-2 upon Siglec-8 phosphorylation. Taken together, these data support a model in which Siglec-8 regulates proximal FcεRI-induced phosphorylation events through phosphatase recruitment and interaction with FcεRIγ, resulting in global inhibition of MCs upon Siglec-8 mAb engagement.
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Affiliation(s)
| | - Alan Wong
- Allakos Inc., Redwood City, CA, United States
| | | | | | | | | | - John Leung
- Allakos Inc., Redwood City, CA, United States
| | | | - Thuy Luu
- Allakos Inc., Redwood City, CA, United States
| | | | | | - Alan Xu
- Allakos Inc., Redwood City, CA, United States
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3
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Effects of omalizumab on basophils: Potential biomarkers in asthma and chronic spontaneous urticaria. Cell Immunol 2020; 358:104215. [PMID: 33137647 DOI: 10.1016/j.cellimm.2020.104215] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/28/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022]
Abstract
Omalizumab is an anti-IgE humanized monoclonal antibody approved for the treatment of severe asthma and chronic spontaneous urticaria. Omalizumab binds free serum IgE and antagonizes its interaction with FcεRI, which is considered the main pharmacodynamic mechanism responsible for the clinical response to the treatment. The reduction of IgE serum concentration down-regulates the cellular expression of FcεRI on basophils. However, the biological events occurring on basophils during the therapy with omalizumab are multiple and complex. Here we review the current evidence regarding the specific biological effects of omalizumab on basophils in patients with asthma and chronic spontaneous urticaria. In addition to the modulation of IgE receptors, omalizumab may affect basophils homeostasis, intra-cellular signaling, cellular responsiveness/activation and cytokine release. These effects may be partially responsible for the clinical success of omalizumab and potentially provide useful biological markers for future assessment of the clinical response to the treatment. However, further investigation is required to better elucidate the role of basophils during the treatment with omalizumab.
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Zhang Y, Hu S, Ge S, Wang J, He L. Paeoniflorin inhibits IgE-mediated allergic reactions by suppressing the degranulation of mast cells though binding with FcϵRI alpha subunits. Eur J Pharmacol 2020; 886:173415. [PMID: 32771669 DOI: 10.1016/j.ejphar.2020.173415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 02/06/2023]
Abstract
Paeoniflorin (PF), a monoterpene glycoside isolated from the aqueous extract of the Chinese herb Radix Paeoniae Alba, has been used for treating various inflammatory diseases. In this study, we aimed to investigate the anti-allergic activities of PF. The anti-anaphylactic activity of PF was investigated using mast cell (MC) degranulation assay as well as Ca2+ influx in vitro and skin swelling and extravasation assays in vivo. The results showed that PF inhibited MC degranulation (histamine release from 74.5 ± 4.95 ng/ml to 58.7 ± 6.06 ng/ml) and Ca2+ influx challenged by DNP-BSA in vitro. In addition, PF reduced the degree of swelling and Evans blue exudation in mice paws. Furthermore, PF dose-dependently reduced serum inflammatory mediator release in mice sensitized with ovalbumin for 48 h by inhibiting MC degranulation. Molecular docking study revealed that PF bound better with the α subunit of FcϵRI than with the β subunit. SPR revealed that PF had a strong affinity interaction with FcϵRI α subunit and the KD value was (7.08 ± 0.97) e-6 M. Our findings revealed that PF inhibited anaphylactic responses in vivo and in vitro, and it can be considered a novel FcϵRI inhibitor for preventing MC-related allergic diseases.
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Affiliation(s)
- Yongjing Zhang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Shiling Hu
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Shuai Ge
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Jue Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Langchong He
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China.
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5
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Leyva-Castillo JM, Galand C, Kam C, Burton O, Gurish M, Musser MA, Goldsmith JD, Hait E, Nurko S, Brombacher F, Dong C, Finkelman FD, Lee RT, Ziegler S, Chiu I, Austen KF, Geha RS. Mechanical Skin Injury Promotes Food Anaphylaxis by Driving Intestinal Mast Cell Expansion. Immunity 2019; 50:1262-1275.e4. [PMID: 31027995 DOI: 10.1016/j.immuni.2019.03.023] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 01/17/2019] [Accepted: 03/25/2019] [Indexed: 12/15/2022]
Abstract
Mast cell (MC) mediator release after crosslinking of surface-bound IgE antibody by ingested antigen underlies food allergy. However, IgE antibodies are not uniformly associated with food allergy, and intestinal MC load is an important determinant. Atopic dermatitis (AD), characterized by pruritis and cutaneous sensitization to allergens, including foods, is strongly associated with food allergy. Tape stripping mouse skin, a surrogate for scratching, caused expansion and activation of small intestinal MCs, increased intestinal permeability, and promoted food anaphylaxis in sensitized mice. Tape stripping caused keratinocytes to systemically release interleukin-33 (IL-33), which synergized with intestinal tuft-cell-derived IL-25 to drive the expansion and activation of intestinal type-2 innate lymphoid cells (ILC2s). These provided IL-4, which targeted MCs to expand in the intestine. Duodenal MCs were expanded in AD. In addition to promoting cutaneous sensitization to foods, scratching may promote food anaphylaxis in AD by expanding and activating intestinal MCs.
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Affiliation(s)
| | - Claire Galand
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Christy Kam
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Oliver Burton
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael Gurish
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Melissa A Musser
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | | | - Elizabeth Hait
- Division of Gastroenterology, Boston Children's Hospital, Boston, MA, USA
| | - Samuel Nurko
- Division of Gastroenterology, Boston Children's Hospital, Boston, MA, USA
| | - Frank Brombacher
- International Center for Genetic Engineering and Biotechnology & University of Cape Town & South Africa Medical Research Council, South Africa
| | - Chen Dong
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China
| | - Fred D Finkelman
- Department of Internal Medicine and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Richard T Lee
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Steven Ziegler
- Immunology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Isaac Chiu
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | - K Frank Austen
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Raif S Geha
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
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6
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Fang L, Wang X, Sun Q, Papakonstantinou E, S'ng C, Tamm M, Stolz D, Roth M. IgE Downregulates PTEN through MicroRNA-21-5p and Stimulates Airway Smooth Muscle Cell Remodeling. Int J Mol Sci 2019; 20:ijms20040875. [PMID: 30781615 PMCID: PMC6412688 DOI: 10.3390/ijms20040875] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 02/04/2019] [Accepted: 02/14/2019] [Indexed: 12/14/2022] Open
Abstract
The patho-mechanism leading to airway wall remodeling in allergic asthma is not well understood and remodeling is resistant to therapies. This study assessed the effect of immunoglobulin E (IgE) in the absence of allergens on human primary airway smooth muscle cell (ASMC) remodeling in vitro. ASMCs were obtained from five allergic asthma patients and five controls. Proliferation was determined by direct cell counts, mitochondrial activity by expression of cytochrome c, protein expression by immunoblotting and immuno-fluorescence, cell migration by microscopy imaging, and collagen deposition by cell based ELISA and RNA expression by real time PCR. Non-immune IgE activated two signaling pathways: (i) signal transducer and activator of transcription 3 (STAT3)→miR-21-5p→downregulating phosphatase and tensin homolog (PTEN) expression, and (ii) phosphatidylinositol 3-kinases (PI3K)→protein kinase B (Akt)→mammalian target of rapamycin (mTOR)→ribosomal protein S6 kinase beta-1 (p70s6k)→peroxisome proliferator-activated receptor gamma coactivator 1-α (PGC1-α)→peroxisome proliferator-activated receptor-γ (PPAR-γ)→cyclooxygenase-2 (COX-2)→mitochondrial activity, proliferation, migration, and extracellular matrix deposition. Reduced PTEN expression correlated with enhanced PI3K signaling, which upregulated ASMC remodeling. The inhibition of microRNA-21-5p increased PTEN and reduced mTOR signaling and remodeling. Mimics of microRNA-21-5p had opposing effects. IgE induced ASMC remodeling was significantly reduced by inhibition of mTOR or STAT3. In conclusion, non-immune IgE alone is sufficient for stimulated ASMC remodeling by upregulating microRNA-21-5p. Our findings suggest that the suppression of micoRNA-21-5p may present a therapeutic target to reduce airway wall remodeling.
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Affiliation(s)
- Lei Fang
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
| | - Xinggang Wang
- Gynecological Endocrinology, Department of Biomedicine, University & University Hospital Basel, Hebelstrasse 20, CH-4031 Basel, Switzerland.
| | - Qingzhu Sun
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Eleni Papakonstantinou
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
- Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | | | - Michael Tamm
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
| | - Daiana Stolz
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
| | - Michael Roth
- Pneumology & Pulmonary Cell Research, Departments of Internal Medicine & Biomedicine, University & University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
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7
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Chen X, Zeng XH, Wang M, Chen L, Zhang N, Rao M, Yang PC, Song J. Bcl2-Like Protein 12 Is Required for the Aberrant T Helper-2 Polarization in the Heart by Enhancing Interleukin-4 Expression and Compromising Apoptotic Machinery in CD4+ T Cells. Circulation 2018; 138:2559-2568. [DOI: 10.1161/circulationaha.118.033890] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Xiao Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
| | - Xian-Hai Zeng
- Research Center of Allergy and Immunology, Shenzhen University School of Medicine, China (X.-H.Z., P.-C.Y)
| | - Mangyuan Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
| | - Liang Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
| | - Ningning Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
| | - Man Rao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
| | - Ping-Chang Yang
- Research Center of Allergy and Immunology, Shenzhen University School of Medicine, China (X.-H.Z., P.-C.Y)
| | - Jiangping Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (X.C., M.W., L.C., N.Z., M.R., J.S.)
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8
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Abstract
Immunoglobulin E-mediated food allergy is rapidly developing into a global health problem. Publicly available therapeutic intervention strategies are currently restricted to allergen avoidance and emergency treatments. To gain a better understanding of the disease pathophysiology so that new therapies can be developed, major research efforts have been put into studying food allergy in mice. Animal models should reflect the human pathology as closely as possible to allow for a rapid translation of basic science observations to the bedside. In this regard, experimental models of food allergy provide significant challenges for research because of discrepancies between the presentation of disease in humans and mice. The goal of this review is to give a summary of commonly used murine disease models and to discuss how they relate to the human condition. We will focus on epicutaneous sensitization models, on mouse strains that sensitize spontaneously to food as seen in humans, and on models in humanized animals. In summary, expanding the research toolbox of experimental food allergy provides an important step toward closing gaps in our understanding of the derailing immune mechanism that underlies the human disease. The availability of additional experimental models will provide exciting opportunities to discover new intervention points for the treatment of food allergies. (Cell Mol Gastroenterol Hepatol 2018;x:x).
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Key Words
- Allergen Challenge
- Allergen Sensitization
- Anaphylaxis
- EPIT, epicutaneous immunotherapy
- Epictutaneous Sensitization
- FCER1A, high-affinity immunoglobulin epsilon receptor subunit alpha
- FCERIA
- FcεRI, high-affinity immunoglobulin E receptor
- GM-CSF, granulocyte-macrophage colony-stimulating factor
- HSC, hematopoietic stem cell
- Humanized Model
- IL, interleukin
- Ig, immunoglobulin
- IgE
- LCT, long chain triglycerides
- MCPT, mouse mast cell protease
- MCT, medium chain triglycerides
- Murine Models of Food Allergy
- OIT, oral immunotherapy
- PBMC, peripheral blood mononuclear cell
- Spontaneous Sensitization
- TSLP, thymic stromal lymphopoietin
- Th, T helper
- Treg, regulatory T cell
- WASP, Wiskott–Aldrich syndrome protein
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9
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Zöller M, Zhao K, Kutlu N, Bauer N, Provaznik J, Hackert T, Schnölzer M. Immunoregulatory Effects of Myeloid-Derived Suppressor Cell Exosomes in Mouse Model of Autoimmune Alopecia Areata. Front Immunol 2018; 9:1279. [PMID: 29951053 PMCID: PMC6008552 DOI: 10.3389/fimmu.2018.01279] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 05/22/2018] [Indexed: 01/28/2023] Open
Abstract
The treatment of autoimmune diseases still poses a major challenge, frequently relying on non-specific immunosuppressive drugs. Current efforts aim at reestablishing self tolerance using immune cells with suppressive activity like the regulatory T cells (Treg) or the myeloid-derived suppressor cells (MDSC). We have demonstrated therapeutic efficacy of MDSC in mouse Alopecia Areata (AA). In the same AA model, we now asked whether MDSC exosomes (MDSC-Exo) can replace MDSC. MDSC-Exo from bone marrow cells (BMC) cultures of healthy donors could substantially facilitate treatment. With knowledge on MDSC-Exo being limited, their suitability needs to be verified in advance. Protein marker profiles suggest comparability of BMC- to ex vivo collected inflammatory MDSC/MDSC-Exo in mice with a chronic contact dermatitis, which is a therapeutic option in AA. Proteome analyses substantiated a large overlap of function-relevant molecules in MDSC and MDSC-Exo. Furthermore, MDSC-Exo are taken up by T cells, macrophages, NK, and most avidly by Treg and MDSC-Exo uptake exceeds binding of MDSC themselves. In AA mice, MDSC-Exo preferentially target skin-draining lymph nodes and cells in the vicinity of remnant hair follicles. MDSC-Exo uptake is accompanied by a strong increase in Treg, reduced T helper proliferation, mitigated cytotoxic activity, and a slight increase in lymphocyte apoptosis. Repeated MDSC-Exo application in florid AA prevented progression and sufficed for partial hair regrowth. Deep sequencing of lymphocyte mRNA from these mice revealed a significant increase in immunoregulatory mRNA, including FoxP3 and arginase 1. Downregulated mRNA was preferentially engaged in prohibiting T cell hyperreactivity. Taken together, proteome analysis provided important insights into potential MDSC-Exo activities, these Exo preferentially homing into AA-affected organs. Most importantly, changes in leukocyte mRNA seen after treatment of AA mice with MDSC-Exo sustainably supports the strong impact on the adaptive and the non-adaptive immune system, with Treg expansion being a dominant feature. Thus, MDSC-Exo could potentially serve as therapeutic agents in treating AA and other autoimmune diseases.
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Affiliation(s)
- Margot Zöller
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Kun Zhao
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Natalia Kutlu
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Nathalie Bauer
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Jan Provaznik
- Gene Core Unit, EMBL Heidelberg, Heidelberg, Germany
| | - Thilo Hackert
- Pancreas Section, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Martina Schnölzer
- Functional Proteome Analysis, German Cancer Research Center, Heidelberg, Germany
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10
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Burton OT, Medina Tamayo J, Stranks AJ, Miller S, Koleoglou KJ, Weinberg EO, Oettgen HC. IgE promotes type 2 innate lymphoid cells in murine food allergy. Clin Exp Allergy 2018; 48:288-296. [PMID: 29247574 DOI: 10.1111/cea.13075] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 11/28/2017] [Accepted: 12/06/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND Mast cells serve an important sentinel function at mucosal barriers and have been implicated as key early inducers of type 2 immune responses in food allergy. The generation of Th2 and IgE following food allergen ingestion is inhibited in the absence of mast cells. Group 2 innate lymphoid cells are also thought to play an important early role in nascent allergic responses. OBJECTIVE To test whether IgE-mediated mast cell activation promotes intestinal ILC2 responses following ingestion of food allergens and whether ILC2 amplify food allergy. METHODS Two different mouse models of food allergy, one using intraperitoneally ovalbumin (OVA)-primed BALB/c animals and the other using enterally peanut-sensitized inherently atopic IL4raF709 mice, were applied to test the contributions of IgE antibodies and mast cells to ILC2 responses. The effect of ILC2 on mast cell activation and on anaphylaxis was tested. RESULTS ILC2 responses were significantly impaired in both models of food allergy in Igh7-/- mice harbouring a targeted deletion of the gene encoding IgE. A similar reduction in food allergen-induced ILC2 was observed in mast cell-deficient Il4raF709 KitW-sh mice, and this was partially corrected by reconstituting these animals using cultured bone marrow mast cells. Mast cells activated ILC2 for IL-13 production in an IL-4Rα-dependent manner. Activated ILC2 amplified systemic anaphylaxis by increasing target tissue sensitivity to mast cell mediators. CONCLUSIONS AND CLINICAL RELEVANCE These findings support an important role for IgE-activated mast cells in driving intestinal ILC2 expansion in food allergy and reveal that ILC2, in turn, can enhance responsiveness to the mediators of anaphylaxis produced by mast cells. Strategies designed to inhibit IgE signalling or mast cell activation are likely to inhibit both type 2 immunity and immediate hypersensitivity in food allergy.
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Affiliation(s)
- O T Burton
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - J Medina Tamayo
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - A J Stranks
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA
| | - S Miller
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA
| | - K J Koleoglou
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA
| | - E O Weinberg
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA
| | - H C Oettgen
- Department of Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
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11
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Lexmond WS, Goettel JA, Sallis BF, McCann K, Rings EHHM, Jensen-Jarolim E, Nurko S, Snapper SB, Fiebiger E. Spontaneous food allergy in Was -/- mice occurs independent of FcεRI-mediated mast cell activation. Allergy 2017; 72:1916-1924. [PMID: 28600891 DOI: 10.1111/all.13219] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Food allergies are a growing health problem, and the development of therapies that prevent disease onset is limited by the lack of adjuvant-free experimental animal models. We compared allergic sensitization in patients with food allergy or Wiskott-Aldrich syndrome (WAS) and defined whether spontaneous disease in Was-/- mice recapitulates the pathology of a conventional disease model and/or human food allergy. METHODS Comparative ImmunoCAP ISAC microarray was performed in patients with food allergy or WAS. Spontaneous food allergy in Was-/- mice was compared to an adjuvant-based model in wild-type mice (WT-OVA/alum). Intestinal and systemic anaphylaxis was assessed, and the role of the high-affinity IgE Fc receptor (FcεRI) in allergic sensitization was evaluated using Was-/- Fcer1a-/- mice. RESULTS Polysensitization to food was detected in both WAS and food-allergic patients which was recapitulated in the Was-/- model. Oral administration of ovalbumin (OVA) in Was-/- mice induced low titers of OVA-specific IgE compared to the WT-OVA/alum model. Irrespectively, 79% of Was-/- mice developed allergic diarrhea following oral OVA challenge. Systemic anaphylaxis occurred in Was-/- mice (95%) with a mortality rate >50%. Spontaneous sensitization and intestinal allergy occurred independent of FcεRI expression on mast cells (MCs) and basophils. CONCLUSIONS Was-/- mice provide a model of food allergy with the advantage of mimicking polysensitization and low food-antigen IgE titers as observed in humans with clinical food allergy. This model will facilitate studies on aberrant immune responses during spontaneous disease development. Our results imply that therapeutic targeting of the IgE/FcεRI activation cascade will not affect sensitization to food.
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Affiliation(s)
- W. S. Lexmond
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
| | - J. A. Goettel
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
| | - B. F. Sallis
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
| | - K. McCann
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
| | - E. H. H. M. Rings
- Departments of Pediatrics; Erasmus Medical Center; Erasmus University; Rotterdam The Netherlands
- University Medical Center Leiden; Leiden University; Leiden The Netherlands
| | - E. Jensen-Jarolim
- Center of Pathophysiology, Infectiology and Immunology; Institute of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
- Comparative Medicine; The Interuniversity Messerli Research Institute; University of Veterinary Medicine Vienna, Medical University of Vienna, University of Vienna; Vienna Austria
- Allergy Care; Allergy Diagnosis and Study Center; Vienna Austria
| | - S. Nurko
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
| | - S. B. Snapper
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
| | - E. Fiebiger
- Department of Pediatrics; Division of Gastroenterology, Hepatology and Nutrition; Boston Children's Hospital; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
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12
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Maximiano WMA, da Silva EZM, Santana AC, de Oliveira PT, Jamur MC, Oliver C. Mast Cell Mediators Inhibit Osteoblastic Differentiation and Extracellular Matrix Mineralization. J Histochem Cytochem 2017; 65:723-741. [PMID: 28980852 DOI: 10.1369/0022155417734174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mast cells are multifunctional immune cells that participate in many important processes such as defense against pathogens, allergic reactions, and tissue repair. These cells perform their functions through the release of a wide variety of mediators. This release occurs mainly through cross-linking IgE (immunoglobulin E) bound to high affinity IgE receptors by multivalent antigens. The abundance of mast cells in connective tissue, surrounding blood vessels, and their involvement in the early stages of bone repair support the possibility of physiological and pathological interactions between mast cells and osteoblasts. However, the participation of mast cell mediators in osteogenesis is not fully understood. Therefore, the objective of this work was to investigate the role of mast cell mediators in the acquisition of the osteogenic phenotype in vitro. The results show that pooled mast cell mediators can affect proliferation, morphology, and cytoskeleton of osteoblastic cells, and impair the activity and expression of alkaline phosphatase as well as the expression of bone sialoprotein. Also, mast cell mediators inhibit the expression of mRNA for those proteins and inhibit the formation and maturation of calcium nodules and consequently inhibit mineralization. Therefore, mast cell mediators can modulate osteogenesis and are potential therapeutic targets for treatments of bone disorders.
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Affiliation(s)
- William Marcatti Amarú Maximiano
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Elaine Zayas Marcelino da Silva
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ana Carolina Santana
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Paulo Tambasco de Oliveira
- Department of Morphology, Stomatology, and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria Célia Jamur
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Constance Oliver
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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13
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Ndaw VS, Abebayehu D, Spence AJ, Paez PA, Kolawole EM, Taruselli MT, Caslin HL, Chumanevich AP, Paranjape A, Baker B, Barnstein BO, Haque TT, Kiwanuka KN, Oskeritzian CA, Ryan JJ. TGF-β1 Suppresses IL-33-Induced Mast Cell Function. THE JOURNAL OF IMMUNOLOGY 2017. [PMID: 28637902 DOI: 10.4049/jimmunol.1601983] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
TGF-β1 is involved in many pathological conditions, including autoimmune disorders, cancer, and cardiovascular and allergic diseases. We have previously found that TGF-β1 can suppress IgE-mediated mast cell activation of human and mouse mast cells. IL-33 is a member of the IL-1 family capable of inducing mast cell responses and enhancing IgE-mediated activation. In this study, we investigated the effects of TGF-β on IL-33-mediated mast cell activation. Bone marrow-derived mast cells cultured in TGF-β1, β2, or β3 showed reduced IL-33-mediated production of TNF, IL-6, IL-13, and MCP-1 in a concentration-dependent manner. TGF-β1 inhibited IL-33-mediated Akt and ERK phosphorylation as well as NF-κB- and AP-1-mediated transcription. These effects were functionally important, as TGF-β1 injection suppressed IL-33-induced systemic cytokines in vivo and inhibited IL-33-mediated cytokine release from human mast cells. TGF-β1 also suppressed the combined effects of IL-33 and IgE-mediated activation on mouse and human mast cells. The role of IL-33 in the pathogenesis of allergic diseases is incompletely understood. These findings, consistent with our previously reported effects of TGF-β1 on IgE-mediated activation, demonstrate that TGF-β1 can provide broad inhibitory signals to activated mast cells.
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Affiliation(s)
- Victor S Ndaw
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Daniel Abebayehu
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA 23284; and
| | - Andrew J Spence
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Patrick A Paez
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | | | | | - Heather L Caslin
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Alena P Chumanevich
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC 29208
| | - Anuya Paranjape
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Bianca Baker
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Brian O Barnstein
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Tamara T Haque
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | | | - Carole A Oskeritzian
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC 29208
| | - John J Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284;
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14
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Oettgen HC. Fifty years later: Emerging functions of IgE antibodies in host defense, immune regulation, and allergic diseases. J Allergy Clin Immunol 2017; 137:1631-1645. [PMID: 27263999 DOI: 10.1016/j.jaci.2016.04.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/22/2016] [Accepted: 04/22/2016] [Indexed: 01/15/2023]
Abstract
Fifty years ago, after a long search, IgE emerged as the circulating factor responsible for triggering allergic reactions. Its extremely low concentration in plasma created significant hurdles for scientists working to reveal its identity. We now know that IgE levels are invariably increased in patients affected by atopic conditions and that IgE provides the critical link between the antigen recognition role of the adaptive immune system and the effector functions of mast cells and basophils at mucosal and cutaneous sites of environmental exposure. This review discusses the established mechanisms of action of IgE in pathologic immediate hypersensitivity, as well as its multifaceted roles in protective immunity, control of mast cell homeostasis, and its more recently revealed immunomodulatory functions.
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Affiliation(s)
- Hans C Oettgen
- Division of Immunology, Boston Children's Hospital, and the Department of Pediatrics, Harvard Medical School, Boston, Mass.
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15
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Burton OT, Tamayo JM, Stranks AJ, Koleoglou KJ, Oettgen HC. Allergen-specific IgG antibody signaling through FcγRIIb promotes food tolerance. J Allergy Clin Immunol 2017; 141:189-201.e3. [PMID: 28479335 DOI: 10.1016/j.jaci.2017.03.045] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 03/20/2017] [Accepted: 03/27/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Patients with food allergy produce high-titer IgE antibodies that bind to mast cells through FcεRI and trigger immediate hypersensitivity reactions on antigen encounter. Food-specific IgG antibodies arise in the setting of naturally resolving food allergy and accompany the acquisition of food allergen unresponsiveness in oral immunotherapy. OBJECTIVE In this study we sought to delineate the effects of IgG and its inhibitory Fc receptor, FcγRIIb, on both de novo allergen sensitization in naive animals and on established immune responses in the setting of pre-existing food allergy. METHODS Allergen-specific IgG was administered to mice undergoing sensitization and desensitization to the model food allergen ovalbumin. Cellular and molecular mechanisms were interrogated by using mast cell- and FcγRIIb-deficient mice. The requirement for FcγRII in IgG-mediated inhibition of human mast cells was investigated by using a neutralizing antibody. RESULTS Administration of specific IgG to food allergy-prone IL4raF709 mice during initial food exposure prevented the development of IgE antibodies, TH2 responses, and anaphylactic responses on challenge. When given as an adjunct to oral desensitization in mice with established IgE-mediated hypersensitivity, IgG facilitated tolerance restoration, favoring expansion of forkhead box protein 3-positive regulatory T cells along with suppression of existing TH2 and IgE responses. IgG and FcγRIIb suppress adaptive allergic responses through effects on mast cell function. CONCLUSION These findings suggest that allergen-specific IgG antibodies can act to induce and sustain immunologic tolerance to foods.
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Affiliation(s)
- Oliver T Burton
- Department of Medicine, Boston Children's Hospital, Boston, Mass; Department of Pediatrics, Harvard Medical School, Boston, Mass.
| | - Jaciel M Tamayo
- Department of Medicine, Boston Children's Hospital, Boston, Mass; Department of Pediatrics, Harvard Medical School, Boston, Mass
| | - Amanda J Stranks
- Department of Medicine, Boston Children's Hospital, Boston, Mass; Department of Pediatrics, Harvard Medical School, Boston, Mass
| | - Kyle J Koleoglou
- Department of Medicine, Boston Children's Hospital, Boston, Mass
| | - Hans C Oettgen
- Department of Medicine, Boston Children's Hospital, Boston, Mass; Department of Pediatrics, Harvard Medical School, Boston, Mass
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