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Chatziparasidis G, Bush A, Chatziparasidi MR, Kantar A. Airway epithelial development and function: A key player in asthma pathogenesis? Paediatr Respir Rev 2023; 47:51-61. [PMID: 37330410 DOI: 10.1016/j.prrv.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/07/2023] [Accepted: 04/25/2023] [Indexed: 06/19/2023]
Abstract
Though asthma is a common and relatively easy to diagnose disease, attempts at primary or secondary prevention, and cure, have been disappointing. The widespread use of inhaled steroids has dramatically improved asthma control but has offered nothing in terms of altering long-term outcomes or reversing airway remodeling and impairment in lung function. The inability to cure asthma is unsurprising given our limited understanding of the factors that contribute to disease initiation and persistence. New data have focused on the airway epithelium as a potentially key factor orchestrating the different stages of asthma. In this review we summarize for the clinician the current evidence on the central role of the airway epithelium in asthma pathogenesis and the factors that may alter epithelial integrity and functionality.
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Affiliation(s)
- Grigorios Chatziparasidis
- Paediatric Respiratory Unit, IASO Hospital, Larissa, Thessaly, Greece; Faculty of Nursing, Thessaly University, Greece.
| | - Andrew Bush
- National Heart and Lung Institute, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | | | - Ahmad Kantar
- Pediatric Asthma and Cough Centre, Instituti Ospedalieri Bergamaschi, University and Research Hospitals, Bergamo, Italy
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2
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Bendavid G, Hubeau C, Perin F, Gillard A, Nokin MJ, Carnet O, Gerard C, Noel A, Lefebvre P, Rocks N, Cataldo D. Role for the metalloproteinase ADAM28 in the control of airway inflammation, remodelling and responsiveness in asthma. Front Immunol 2023; 13:1067779. [PMID: 36685493 PMCID: PMC9851272 DOI: 10.3389/fimmu.2022.1067779] [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: 10/12/2022] [Accepted: 12/06/2022] [Indexed: 01/06/2023] Open
Abstract
Background Asthma is characterized by morphological modifications of the airways (inflammation and remodelling) and bronchial hyperresponsiveness. Mechanisms linking these two key features of asthma are still poorly understood. ADAM28 (a disintegrin and metalloproteinase 28) might play a role in asthma pathophysiology. ADAM28 exists as membrane-bound and soluble forms and is mainly expressed by lymphocytes and epithelial cells. Methods ADAM28-/- mice and ADAM28+/+ counterparts were sensitized and exposed to ovalbumin (OVA). Airway responsiveness was measured using the flexiVent® system. After sacrifice, bronchoalveolar lavage (BAL) was performed and lungs were collected for analysis of airway inflammation and remodelling. Results The expression of the soluble form of ADAM28 was lower in the lungs of OVA-exposed mice (as compared to PBS-exposed mice) and progressively increased in correlation with the duration of allergen exposure. In lungs of ADAM28-/- mice exposed to allergens, the proportion of Th2 cells among CD 4 + cells and the number of B cells were decreased. Bronchial responsiveness was lower in ADAM28-/- mice exposed to allergens and similar to the responsiveness of sham-challenged mice. Similarly, features of airway remodelling (collagen deposition, smooth muscle hyperplasia, mucous hyperplasia) were significantly less developed in OVA-exposed ADAM28-/- animals in sharp contrasts to ADAM28+/+. In addition, we report the first evidence of ADAM28 RNA expression by lung fibroblasts and we unveil a decreased capacity of lung fibroblasts extracted from OVA-exposed ADAM28-/- mice to proliferate as compared to those extracted from OVA-exposed ADAM28+/+ suggesting a direct contribution of this enzyme to the modulation of airway remodelling. Conclusion These results suggest that ADAM28 might be a key contributor to the pathophysiology of asthma.
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Affiliation(s)
- Guillaume Bendavid
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium,Department of Otorhinolaryngology Head and Neck Surgery, University of Liege (ULiege) and Centre Hospitalier Universitaire (CHU) Liege, Liege, Belgium
| | - Céline Hubeau
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Fabienne Perin
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Alison Gillard
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Marie-Julie Nokin
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Oriane Carnet
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Catherine Gerard
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Agnès Noel
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Philippe Lefebvre
- Department of Otorhinolaryngology Head and Neck Surgery, University of Liege (ULiege) and Centre Hospitalier Universitaire (CHU) Liege, Liege, Belgium
| | - Natacha Rocks
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium
| | - Didier Cataldo
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liege (ULiege), Liege, Belgium,Department of respiratory diseases, University of Liege (ULiege) and Centre Hospitalier Universitaire (CHU) Liege, Liege, Belgium,*Correspondence: Didier Cataldo,
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3
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Miki H, Pei H, Gracias DT, Linden J, Croft M. Clearance of apoptotic cells by lung alveolar macrophages prevents development of house dust mite-induced asthmatic lung inflammation. J Allergy Clin Immunol 2020; 147:1087-1092.e3. [PMID: 33065121 DOI: 10.1016/j.jaci.2020.10.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 09/25/2020] [Accepted: 10/05/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Poor clearance of apoptotic cells has been suggested to contribute to severe asthma, but whether uptake of apoptotic cells by lung phagocytes might dampen house dust mite (HDM)-induced lung inflammation has not been shown. OBJECTIVES This study investigated whether apoptotic cell engulfment in the murine lung impacts the development of allergen-induced asthmatic airway inflammation and which immune modulating mechanisms were activated. METHODS Apoptotic cells were infused into the lungs of mice challenged with HDM allergen and lung inflammation, expression of suppressive molecules, and induction of regulatory T cells were monitored. Additionally, an adenosine receptor agonist was tested to study the mechanism of suppression elicited by apoptotic cells. RESULTS Apoptotic cell uptake by lung alveolar macrophages suppressed HDM-driven allergic asthma. This was associated with promoting the regulatory T cell-inducing molecule retinoic acid, inhibiting inflammatory cytokine production, and making macrophages more susceptible to receiving suppressive signals from adenosine. Correspondingly, adenosine receptor agonist treatment also limited HDM-driven allergic airway inflammation through an action on alveolar macrophages. CONCLUSIONS These data provide insight into the mechanisms by which lung macrophages dampen allergen-induced airway inflammation. They suggest that targeting lung macrophages to increase their phagocytic capacity, enhance their ability to make retinoic acid, dampen their capacity to make inflammatory cytokines, and increase their responsiveness to adenosine, could be useful to suppress allergic responses.
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Affiliation(s)
- Haruka Miki
- Center of Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, Calif
| | - Hong Pei
- Center of Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, Calif
| | - Donald Tom Gracias
- Center of Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, Calif
| | - Joel Linden
- Center of Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, Calif
| | - Michael Croft
- Center of Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, Calif; Department of Medicine, University of California San Diego, La Jolla, Calif.
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4
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Wielgat P, Rogowski K, Niemirowicz-Laskowska K, Car H. Sialic Acid-Siglec Axis as Molecular Checkpoints Targeting of Immune System: Smart Players in Pathology and Conventional Therapy. Int J Mol Sci 2020; 21:ijms21124361. [PMID: 32575400 PMCID: PMC7352527 DOI: 10.3390/ijms21124361] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 12/11/2022] Open
Abstract
The sialic acid-based molecular mimicry in pathogens and malignant cells is a regulatory mechanism that leads to cross-reactivity with host antigens resulting in suppression and tolerance in the immune system. The interplay between sialoglycans and immunoregulatory Siglec receptors promotes foreign antigens hiding and immunosurveillance impairment. Therefore, molecular targeting of immune checkpoints, including sialic acid-Siglec axis, is a promising new field of inflammatory disorders and cancer therapy. However, the conventional drugs used in regular management can interfere with glycome machinery and exert a divergent effect on immune controlling systems. Here, we focus on the known effects of standard therapies on the sialoglycan-Siglec checkpoint and their importance in diagnosis, prediction, and clinical outcomes.
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Affiliation(s)
- Przemyslaw Wielgat
- Department of Clinical Pharmacology, Medical University of Bialystok, Waszyngtona 15A, 15-274 Bialystok, Poland;
- Correspondence: ; Tel.: +48-85-7450-647
| | - Karol Rogowski
- Department of Experimental Pharmacology, Medical University of Bialystok, Szpitalna 37, 15-295 Bialystok, Poland; (K.R.); (K.N.-L.)
| | - Katarzyna Niemirowicz-Laskowska
- Department of Experimental Pharmacology, Medical University of Bialystok, Szpitalna 37, 15-295 Bialystok, Poland; (K.R.); (K.N.-L.)
| | - Halina Car
- Department of Clinical Pharmacology, Medical University of Bialystok, Waszyngtona 15A, 15-274 Bialystok, Poland;
- Department of Experimental Pharmacology, Medical University of Bialystok, Szpitalna 37, 15-295 Bialystok, Poland; (K.R.); (K.N.-L.)
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5
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Weng Q, Zhu C, Zheng K, Wu Y, Dong L, Wu Y, Li M, Shen J, Ying S, Shen H, Chen Z, Li W. Early recruited neutrophils promote asthmatic inflammation exacerbation by release of neutrophil elastase. Cell Immunol 2020; 352:104101. [PMID: 32278493 DOI: 10.1016/j.cellimm.2020.104101] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/18/2020] [Accepted: 04/02/2020] [Indexed: 01/28/2023]
Abstract
Neutrophils can regulate adaptive immune responses and contribute to chronic inflammation including asthma. However, the roles and mechanisms of neutrophils in initiating eosinophilic airway inflammation remain incompletely understood. Neutrophil elastase (NE) is a component of azurophilic granules and a serine protease with potent functions during inflammation. Here, we showed that neutrophils were early recruited at the onset of asthmatic inflammation by related chemokines. Furthermore, neutrophils could capture allergens and release NE to promote neutrophil aggregation at first. Then they prompt eosinophil infiltration and amplify type 2 immune responses in later phases. Also, this process can be rescued by administration of the NE inhibitor (GW311616). Our data collectively indicate that neutrophils could contribute to asthmatic inflammation by releasing NE.
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Affiliation(s)
- Qingyu Weng
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Chen Zhu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Kua Zheng
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Yinfang Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Lingling Dong
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Yanping Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Miao Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Jiaxin Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Songmin Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Huahao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
| | - Zhihua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
| | - Wen Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
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Kurrikoff K, Freimann K, Veiman KL, Peets EM, Piirsoo A, Langel Ü. Effective lung-targeted RNAi in mice with peptide-based delivery of nucleic acid. Sci Rep 2019; 9:19926. [PMID: 31882941 PMCID: PMC6934651 DOI: 10.1038/s41598-019-56455-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 11/29/2019] [Indexed: 11/09/2022] Open
Abstract
We have previously developed efficient peptide-based nucleic acid delivery vectors PF14 and NF55, where we have shown that these vectors preferentially transfect lung tissue upon systemic administration with the nucleic acid. In the current work, we have explored the utilization and potential of these vectors for the lung-targeted gene therapy. Accordingly, we assessed the efficacy of these peptides in (i) two different lung disease models - acute lung inflammation and asthma in mice and (ii) using two different nucleic acid cargos - siRNA and pDNA encoding shRNA. Using RNAi against cytokine TNFα, we showed efficient anti-inflammatory effects in both disease models and observed decreased disease symptoms. Our results highlight the potential of our transfection vectors for lung gene therapy.
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Affiliation(s)
- Kaido Kurrikoff
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia.
| | - Krista Freimann
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Kadi-Liis Veiman
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Elin Madli Peets
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Andres Piirsoo
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Ülo Langel
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
- Department Biochemistry and Biophysics, Stockholm University, S. Arrheniusv 16B, SE-106 91, Stockholm, Sweden
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7
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Hyde EJ, Wakelin KA, Daniels NJ, Ghosh S, Ronchese F. Similar immune mechanisms control experimental airway eosinophilia elicited by different allergens and treatment protocols. BMC Immunol 2019; 20:18. [PMID: 31164097 PMCID: PMC6549380 DOI: 10.1186/s12865-019-0295-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/25/2019] [Indexed: 02/08/2023] Open
Abstract
Background Mouse models have been extremely valuable in identifying the fundamental mechanisms of airway inflammation that underlie human allergic asthma. Several models are commonly used, employing different methods and routes of sensitisation, and allergens of varying clinical relevance. Although all models elicit similar hallmarks of allergic airway inflammation, including airway eosinophilia, goblet cell hyperplasia and cellular infiltration in lung, it is not established whether they do so by involving the same mechanisms. Results We compared the impact of inactivation of various innate or adaptive immune genes, as well as sex, in different models of allergic airway inflammation in mice of C57BL/6 background. Chicken ovalbumin (OVA) and house dust mite (HDM) were used as allergens in settings of single or multiple intranasal (i.n.) challenges, after sensitisation in adjuvant or in adjuvant-free conditions. Eosinophil numbers in the broncho-alveolar lavage and lung histopathology were assessed in each model. We found that Major Histocompatibility Complex Class II (MHCII) deficiency and lack of conventional CD4+ T cells had the most profound effect, essentially ablating airway eosinophilia and goblet cell hyperplasia in all models. In contrast, Thymic stromal lymphopoietin receptor (TSLPR) deficiency greatly reduced eosinophilia but had a variable effect on goblet cells. CD1d deficiency and lack of Natural Killer T (NKT) cells moderately impaired inflammation in OVA models but not HDM, whereas sex affected the response to HDM but not OVA. Lastly, defective Toll-like receptor (TLR)4 expression had only a relatively modest overall impact on inflammation. Conclusion All the models studied were comparably dependent on adaptive CD4+ T cell responses and TSLP. In contrast, sex, NKT cells and TLR4 appeared to play subtler and more variable roles that were dependent on the type of allergen and mode of immunization and challenge. These results are consistent with clinical data suggesting a key role of CD4+ T cells and TSLP in patients with allergic asthma. Electronic supplementary material The online version of this article (10.1186/s12865-019-0295-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Evelyn J Hyde
- Malaghan Institute of Medical Research, Wellington, 6021, New Zealand
| | - Kirsty A Wakelin
- Malaghan Institute of Medical Research, Wellington, 6021, New Zealand
| | - Naomi J Daniels
- Malaghan Institute of Medical Research, Wellington, 6021, New Zealand
| | - Sayani Ghosh
- Malaghan Institute of Medical Research, Wellington, 6021, New Zealand
| | - Franca Ronchese
- Malaghan Institute of Medical Research, Wellington, 6021, New Zealand.
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8
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Synergistic activation of pro-inflammatory type-2 CD8 + T lymphocytes by lipid mediators in severe eosinophilic asthma. Mucosal Immunol 2018; 11:1408-1419. [PMID: 29907870 PMCID: PMC6448764 DOI: 10.1038/s41385-018-0049-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 04/12/2018] [Accepted: 05/06/2018] [Indexed: 02/04/2023]
Abstract
Human type-2 CD8+ T cells are a cell population with potentially important roles in allergic disease. We investigated this in the context of severe asthma with persistent airway eosinophilia-a phenotype associated with high exacerbation risk and responsiveness to type-2 cytokine-targeted therapies. In two independent cohorts we show that, in contrast to Th2 cells, type-2 cytokine-secreting CD8+CRTH2+ (Tc2) cells are enriched in blood and airways in severe eosinophilic asthma. Concentrations of prostaglandin D2 (PGD2) and cysteinyl leukotriene E4 (LTE4) are also increased in the airways of the same group of patients. In vitro PGD2 and LTE4 function synergistically to trigger Tc2 cell recruitment and activation in a TCR-independent manner. These lipids regulate diverse genes in Tc2 cells inducing type-2 cytokines and many other pro-inflammatory cytokines and chemokines, which could contribute to eosinophilia. These findings are consistent with an important innate-like role for human Tc2 cells in severe eosinophilic asthma and suggest a potential target for therapeutic intervention in this and other diseases.
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9
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Li BWS, de Bruijn MJW, Lukkes M, van Nimwegen M, Bergen IM, KleinJan A, GeurtsvanKessel CH, Andeweg A, Rimmelzwaan GF, Hendriks RW. T cells and ILC2s are major effector cells in influenza-induced exacerbation of allergic airway inflammation in mice. Eur J Immunol 2018; 49:144-156. [PMID: 29762870 PMCID: PMC6585726 DOI: 10.1002/eji.201747421] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/14/2018] [Accepted: 05/09/2018] [Indexed: 12/17/2022]
Abstract
Influenza virus infection is an important cause of severe asthma exacerbations, but it remains unclear how a Th1‐mediated antiviral response triggers a prototypical Th2 disease. We investigated CD4+ T cells and group 2 innate lymphoid cells (ILC2s) in influenza virus‐infected mice. We found that ILC2s accumulated in the lung rapidly after influenza virus infection, but the induction of IL‐5 and IL‐13 secretion was delayed and concomitant with T cell activation. In an influenza‐induced exacerbation of allergic airway inflammation model we noticed an initial reduction of ILC2 numbers and cytokine production in broncho‐alveolar lavage compared to chronic house dust mite (HDM)‐mediated airway inflammation alone. ILC2s phenotype was characterized by low T1/ST2, ICOS, KLRG1, and CD25 expression, resembling naïve ILC2s. The contribution of ILC2s to type 2 cytokine production in the early stage of the influenza‐induced exacerbation was limited. In contrast, T cells showed increased IL‐4 and IL‐5 production when exposed to both HDM and influenza virus. Upon virus clearance, ILC2s regained an activated T1/ST2highICOShighKLRG1highCD25high phenotype paired with cytokine production and were major contributors to the type 2 cytokine milieu. Collectively, our data indicate that both T cells and ILC2s contribute to influenza‐induced exacerbation of allergic airway inflammation, but with different kinetics.
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Affiliation(s)
- Bobby W S Li
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | | | - Melanie Lukkes
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Menno van Nimwegen
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Ingrid M Bergen
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Alex KleinJan
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | | | - Arno Andeweg
- Department of Viroscience, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Guus F Rimmelzwaan
- Department of Viroscience, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
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10
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Abstract
Allergic inflammation is a type 2 immune disorder classically characterized by high levels of immunoglobulin E (IgE) and the development of Th2 cells. Asthma is a pulmonary allergic inflammatory disease resulting in bronchial hyper-reactivity. Atopic asthma is defined by IgE antibody-mediated mast cell degranulation, while in non-atopic asthma there is no allergen-specific IgE and more involvement of innate immune cells, such as basophils, group 2 innate lymphoid cells (ILC2), and eosinophils. Recently, protease allergens were shown to cause asthmatic responses in the absence of Th2 cells, suggesting that an innate cell network (IL-33/TSLP-basophil-ILC2-IL-5/IL-13 axis) can facilitate the sensitization phase of type 2 inflammatory responses. Recent evidence also indicates that in the chronic phase, these innate immune cells directly or indirectly contribute to the adaptive Th2 cell responses. In this review, we discuss the role of Th2 cytokines (IL-4 and IL-13) and innate immune cells (mast cells, basophils, ILC2s, and dendritic cells) in the cross-talk between innate and adaptive inflammatory responses.
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Affiliation(s)
- Masato Kubo
- Division of Molecular Pathology, Research Institute for Biomedical Science, Tokyo University of Science, Noda, Japan.,Laboratory for Cytokine Regulation, Research Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
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11
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Li BWS, Beerens DMJM, Brem MD, Hendriks RW. Characterization of Group 2 Innate Lymphoid Cells in Allergic Airway Inflammation Models in the Mouse. Methods Mol Biol 2018; 1559:169-183. [PMID: 28063044 DOI: 10.1007/978-1-4939-6786-5_12] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Allergic asthma is a chronic inflammatory lung disease mediated by type 2 cytokines produced by T helper 2 (Th2) cells as well as the recently discovered group 2 innate lymphoid cells (ILC2). Due to a lack of unique markers, the accurate phenotypic characterization and quantification of ILC2 requires a comprehensive panel of fluorescently labeled antibodies. The markers that are currently used to characterize ILC2 have not been standardized and often vary between research groups, which poses significant challenges when comparing data. Intranasal administration of the pro-inflammatory cytokine IL-33 in mice is associated with strong, Th2 cell-independent ILC2 activation. ILC2 are also activated in mouse models of allergic asthma based on the physiologically relevant house dust mite (HDM) allergen, which parallel eosinophilic airway inflammation observed in asthma patients. Here, we describe the analysis of ILC2 by flow cytometry in these two commonly used allergic airway inflammation models in the mouse.
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Affiliation(s)
- Bobby W S Li
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, 2040, 3000, CA, Rotterdam, The Netherlands
| | - Dior M J M Beerens
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, 2040, 3000, CA, Rotterdam, The Netherlands
| | - Maarten D Brem
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, 2040, 3000, CA, Rotterdam, The Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, 2040, 3000, CA, Rotterdam, The Netherlands.
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12
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Geng S, Zhong Y, Zhou X, Zhao G, Xie X, Pei Y, Liu H, Zhang H, Shi Y, Wang B. Induced Regulatory T Cells Superimpose Their Suppressive Capacity with Effector T Cells in Lymph Nodes via Antigen-Specific S1p1-Dependent Egress Blockage. Front Immunol 2017. [PMID: 28638384 PMCID: PMC5461288 DOI: 10.3389/fimmu.2017.00663] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Regulatory T cells (Tregs) restrict overexuberant lymphocyte activation. While close proximity between Tregs and their suppression targets is important for optimal inhibition, and literature indicates that draining lymph nodes (LNs) may serve as a prime location for the suppression, signaling details orchestrating this event are not fully characterized. Using a protocol to enable peripheral generation of inducible antigen-specific Tregs (asTregs) to control allergen-induced asthma, we have identified an antigen-specific mechanism that locks asTregs within hilar LNs which in turn suppresses airway inflammation. The suppressive asTregs, upon antigen stimulation in the LN, downregulate sphingosine-1-phosphate receptor 1 egress receptor expression. These asTregs in turn mediate the downregulation of the same receptor on incoming effector T cells. Therefore, asTregs and effector T cells are locked in these draining LNs for prolonged interactions. Disruption of individual steps of this retention sequence abolishes the inflammation controlled by asTregs. Collectively, this study identifies a new requirement of spatial congregation with their suppression targets essential for asTreg functions and suggests therapeutic programs via Treg traffic control.
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Affiliation(s)
- Shuang Geng
- Key Laboratory of Medical Molecular Virology of MOH and MOE, Fudan University Shanghai Medical College, Shanghai, China
| | - Yiwei Zhong
- Key Laboratory of Medical Molecular Virology of MOH and MOE, Fudan University Shanghai Medical College, Shanghai, China
| | - Xiaoyu Zhou
- Key Laboratory of Medical Molecular Virology of MOH and MOE, Fudan University Shanghai Medical College, Shanghai, China
| | - Gan Zhao
- Key Laboratory of Medical Molecular Virology of MOH and MOE, Fudan University Shanghai Medical College, Shanghai, China
| | - Xiaoping Xie
- State Key Laboratory for Agro-Biotechnology, China Agricultural University, Beijing, China
| | - Yechun Pei
- State Key Laboratory for Agro-Biotechnology, China Agricultural University, Beijing, China
| | - Hu Liu
- State Key Laboratory for Agro-Biotechnology, China Agricultural University, Beijing, China
| | - Huiyuan Zhang
- State Key Laboratory for Agro-Biotechnology, China Agricultural University, Beijing, China
| | - Yan Shi
- Tsinghua-Peking Center for Life Sciences; Institute for Immunology, School of Medicine, Tsinghua University, Beijing, China.,Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute, University of Calgary, Calgary, AB, Canada
| | - Bin Wang
- Key Laboratory of Medical Molecular Virology of MOH and MOE, Fudan University Shanghai Medical College, Shanghai, China
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13
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Luczak E, Wieczfinska J, Sokolowska M, Pniewska E, Luczynska D, Pawliczak R. Troglitazone, a PPAR-γ agonist, decreases LTC 4 concentration in mononuclear cells in patients with asthma. Pharmacol Rep 2017; 69:1315-1321. [PMID: 29128815 DOI: 10.1016/j.pharep.2017.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 05/06/2017] [Accepted: 05/11/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND Asthma is an inflammatory disorder with multiple mediators involved in the inflammatory response. Despite several attempts, no new anti-inflammatory drugs have been registered for asthma treatment for several years. However, thiazolidinediones, peroxisome proliferator-activated receptor agonists, have demonstrated some anti-inflammatory properties in various experimental settings. The aim of this study was to assess the influence of troglitazone on LTC4 and 15-HETE concentrations. It also evaluates TNF-induced eotaxin synthesis in peripheral blood mononuclear cells from 14 patients with mild asthma and 13 healthy controls. METHODS PBMCs were isolated from the whole blood of the asthmatics and healthy subjects and pretreated with 0.1, 1 or 10μM of Troglitazone. The cells were then exposed to 10-6M calcium jonophore or 10ng/ml TNF. The production and release of LTC4, 15-HETE and eotaxin were then assessed. RESULTS Troglitazone caused a dose-dependent inhibition in LTC4 synthesis in both asthmatics and healthy subjects. Troglitazone did not influence 15-HETE or eotaxin production in either asthmatic patients or in healthy individuals. CONCLUSION Due to its inhibition of LTC4 synthesis, troglitazone therapy is an interesting potential therapeutic approach in asthma and other LTC4 related inflammatory disorders.
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Affiliation(s)
- Emilia Luczak
- Department of Immunopathology, Medical University of Lodz, Łódź, Poland
| | | | - Milena Sokolowska
- Department of Immunopathology, Medical University of Lodz, Łódź, Poland; Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - Ewa Pniewska
- Department of Immunopathology, Medical University of Lodz, Łódź, Poland
| | - Daria Luczynska
- Department of Immunopathology, Medical University of Lodz, Łódź, Poland
| | - Rafał Pawliczak
- Department of Immunopathology, Medical University of Lodz, Łódź, Poland.
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14
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Maltby S, Tay HL, Yang M, Foster PS. Mouse models of severe asthma: Understanding the mechanisms of steroid resistance, tissue remodelling and disease exacerbation. Respirology 2017; 22:874-885. [PMID: 28401621 DOI: 10.1111/resp.13052] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 02/28/2017] [Accepted: 03/09/2017] [Indexed: 02/07/2023]
Abstract
Severe asthma has significant disease burden and results in high healthcare costs. While existing therapies are effective for the majority of asthma patients, treatments for individuals with severe asthma are often ineffective. Mouse models are useful to identify mechanisms underlying disease pathogenesis and for the preclinical assessment of new therapies. In fact, existing mouse models have contributed significantly to our understanding of allergic/eosinophilic phenotypes of asthma and facilitated the development of novel targeted therapies (e.g. anti-IL-5 and anti-IgE). These therapies are effective in relevant subsets of severe asthma patients. Unfortunately, non-allergic/non-eosinophilic asthma, steroid resistance and disease exacerbation remain areas of unmet clinical need. No mouse model encompasses all features of severe asthma. However, mouse models can provide insight into pathogenic pathways that are relevant to severe asthma. In this review, as examples, we highlight models relevant to understanding steroid resistance, chronic tissue remodelling and disease exacerbation. Although these models highlight the complexity of the immune pathways that may underlie severe asthma, they also provide insight into new potential therapeutic approaches.
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Affiliation(s)
- Steven Maltby
- Hunter Medical Research Institute, Priority Research Centre for Healthy Lungs, Newcastle, New South Wales, Australia.,Department of Microbiology and Immunology, School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Hock L Tay
- Hunter Medical Research Institute, Priority Research Centre for Healthy Lungs, Newcastle, New South Wales, Australia.,Department of Microbiology and Immunology, School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Ming Yang
- Hunter Medical Research Institute, Priority Research Centre for Healthy Lungs, Newcastle, New South Wales, Australia.,Department of Microbiology and Immunology, School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Paul S Foster
- Hunter Medical Research Institute, Priority Research Centre for Healthy Lungs, Newcastle, New South Wales, Australia.,Department of Microbiology and Immunology, School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, Newcastle, New South Wales, Australia
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15
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Li BWS, de Bruijn MJW, Tindemans I, Lukkes M, KleinJan A, Hoogsteden HC, Hendriks RW. T cells are necessary for ILC2 activation in house dust mite-induced allergic airway inflammation in mice. Eur J Immunol 2016; 46:1392-403. [PMID: 27062360 DOI: 10.1002/eji.201546119] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 02/14/2016] [Accepted: 03/31/2016] [Indexed: 01/29/2023]
Abstract
Allergic asthma is a chronic inflammation of the airways mediated by an adaptive type 2 immune response. Upon allergen exposure, group 2 innate lymphoid cells (ILC2s) can be rapidly activated and represent an early innate source of IL-5 and IL-13. Here, we used a house dust mite (HDM)-driven asthma mouse model to study the induction of ILC2s in allergic airway inflammation. In BALF, lungs, and lymph nodes, ILC2 activation is critically dependent on prior sensitization with HDM. Importantly, T cells are required for ILC2 induction, whereby T-cell activation precedes ILC2 induction. During HDM-driven allergic airway inflammation the accumulation of ILC2s in BALF is IL-33 independent, although infiltrating ILC2s produce less cytokines in Il33(-/-) mice. Transfer of in vitro polarized OVA-specific OT-II Th2 cells alone or in combination with Th17 cells followed by OVA and HDM challenge is not sufficient to induce ILC2, despite significant eosinophilic inflammation and T-cell activation. In this asthma model, ILC2s are therefore not an early source of Th2 cytokines, but rather contribute to type 2 inflammation in which Th2 cells play a key role. Taken together, ILC2 induction in HDM-mediated allergic airway inflammation in mice critically depends on activation of T cells.
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Affiliation(s)
- Bobby W S Li
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
| | | | - Irma Tindemans
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
| | - Melanie Lukkes
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
| | - Alex KleinJan
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
| | - Henk C Hoogsteden
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, The Netherlands
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16
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Role of IL-4 receptor α-positive CD4(+) T cells in chronic airway hyperresponsiveness. J Allergy Clin Immunol 2015; 137:1852-1862.e9. [PMID: 26688514 DOI: 10.1016/j.jaci.2015.10.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND TH2 cells and their cytokines are associated with allergic asthma in human subjects and with mouse models of allergic airway disease. IL-4 signaling through the IL-4 receptor α (IL-4Rα) chain on CD4(+) T cells leads to TH2 cell differentiation in vitro, implying that IL-4Rα-responsive CD4(+) T cells are critical for the induction of allergic asthma. However, mechanisms regulating acute and chronic allergen-specific TH2 responses in vivo remain incompletely understood. OBJECTIVE This study defines the requirements for IL-4Rα-responsive CD4(+) T cells and the IL-4Rα ligands IL-4 and IL-13 in the development of allergen-specific TH2 responses during the onset and chronic phase of experimental allergic airway disease. METHODS Development of acute and chronic ovalbumin (OVA)-induced allergic asthma was assessed weekly in CD4(+) T cell-specific IL-4Rα-deficient BALB/c mice (Lck(cre)IL-4Rα(-/lox)) and respective control mice in the presence or absence of IL-4 or IL-13. RESULTS During acute allergic airway disease, IL-4 deficiency did not prevent the onset of TH2 immune responses and OVA-induced airway hyperresponsiveness or goblet cell hyperplasia, irrespective of the presence or absence of IL-4Rα-responsive CD4(+) T cells. In contrast, deficiency of IL-13 prevented allergic asthma, irrespective of the presence or absence of IL-4Rα-responsive CD4(+) T cells. Importantly, chronic allergic inflammation and airway hyperresponsiveness were dependent on IL-4Rα-responsive CD4(+) T cells. Deficiency in IL-4Rα-responsive CD4(+) T cells resulted in increased numbers of IL-17-producing T cells and, consequently, increased airway neutrophilia. CONCLUSION IL-4-responsive T helper cells are dispensable for acute OVA-induced airway disease but crucial in maintaining chronic asthmatic pathology.
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17
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Smooth muscle CaMKIIδ promotes allergen-induced airway hyperresponsiveness and inflammation. Pflugers Arch 2015; 467:2541-54. [PMID: 26089028 DOI: 10.1007/s00424-015-1713-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 06/02/2015] [Accepted: 06/04/2015] [Indexed: 12/28/2022]
Abstract
Airway smooth muscle (ASM) is a key target cell in allergen-induced asthma known to contribute to airway hyperresponsiveness (AHR) and chronic airway remodeling. Changes in ASM calcium homeostasis have been shown to contribute to AHR although the mechanisms and Ca(2+) signal effectors are incompletely understood. In the present study, we tested the function of ASM multifunctional protein kinase Ca(2+)/calmodulin-dependent kinase II (CaMKII) isoforms CaMKIIδ and CaMKIIγ in allergen-induced AHR and airway remodeling in vivo. Using a murine model of atopic asthma, we demonstrate that CaMKIIδ protein is upregulated in ASM derived from ovalbumin (OVA)-treated animals compared to controls. A genetic approach to conditionally knock out smooth muscle CaMKIIδ and CaMKIIγ in separate Cre-loxp systems was validated, and using this loss-of-function approach, the function of these CaMKII isoforms was tested in ovalbumin (OVA)-induced airway remodeling and AHR. OVA treatment in control mice had no effect on ASM remodeling in this model of AHR, and CaMKIIδ knockouts had no independent effects on ASM content. However, at 1 day post-final OVA challenge, OVA-induced AHR was eliminated in the CaMKIIδ knockouts. OVA-induced peribronchial inflammation and bronchoalveolar lavage fluid (BALF) levels of the Th2 cytokine IL-13 were significantly decreased in the CaMKIIδ knockouts. Unexpectedly, we found increased peribronchial eosinophils in the smooth muscle CaMKIIδ knockouts compared to control animals at 1 day post-final challenge, suggesting that lack of ASM CaMKIIδ delays the progression of AHR rather than inhibiting it. Indeed, when AHR was determined at 7 days post-final OVA challenge, CaMKIIδ knockouts showed robust AHR while AHR was fully resolved in OVA-challenged control mice. These in vivo studies demonstrate a role for smooth muscle CaMKIIδ in promoting airway inflammation and AHR and suggest a complex signaling role for CaMKIIδ in regulating ASM function. These studies confirm the diverse roles of ASM cells as immune effectors that control AHR and call for further studies into CaMKIIδ-mediated signaling in ASM cells during disease.
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18
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Mehta AK, Duan W, Doerner AM, Traves SL, Broide DH, Proud D, Zuraw BL, Croft M. Rhinovirus infection interferes with induction of tolerance to aeroantigens through OX40 ligand, thymic stromal lymphopoietin, and IL-33. J Allergy Clin Immunol 2015; 137:278-288.e6. [PMID: 26100084 DOI: 10.1016/j.jaci.2015.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 04/29/2015] [Accepted: 05/02/2015] [Indexed: 11/25/2022]
Abstract
BACKGROUND Rhinovirus infection at an early age has been associated with development of asthma, but how rhinovirus influences the immune response is not clear. OBJECTIVE Tolerance to inhaled antigen is mediated through induction of regulatory T (Treg) cells, and we examined whether rhinovirus infection of the respiratory tract can block airway tolerance by modulating Treg cells. METHODS The immune response to intranasal ovalbumin in mice was assessed with concomitant infection with RV1B, and the factors induced in vivo were compared with those made by human lung epithelial cells infected in vitro with RV16. RESULTS RV1B infection of mice abrogated tolerance induced by inhalation of soluble ovalbumin, suppressing the normal generation of forkhead box protein 3-positive Treg cells while promoting TH2 cells. Furthermore, RV1B infection led to susceptibility to asthmatic lung disease when mice subsequently re-encountered aeroantigen. RV1B promoted early in vivo expression of the TNF family protein OX40 ligand on lung dendritic cells that was dependent on the innate cytokine thymic stromal lymphopoietin (TSLP) and also induced another innate cytokine, IL-33. Inhibiting each of these pathways allowed the natural development of Treg cells while minimizing TH2 differentiation and restored tolerance in the face of RV1B infection. In accordance, RV16 infection of human lung epithelial cells upregulated TSLP and IL-33 expression. CONCLUSIONS These results suggest that infection of the respiratory epithelium with rhinovirus can antagonize tolerance to inhaled antigen through combined induction of TSLP, IL-33, and OX40 ligand and that this can lead to susceptibility to asthmatic lung inflammation.
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Affiliation(s)
- Amit K Mehta
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology, La Jolla, Calif
| | - Wei Duan
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology, La Jolla, Calif
| | - Astrid M Doerner
- Veterans Medical Research Foundation, University of California San Diego, La Jolla, Calif; Department of Medicine, University of California San Diego, La Jolla, Calif
| | - Suzanne L Traves
- Airway Inflammation Research Group, Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, University of Calgary Faculty of Medicine, Calgary, Alberta, Canada
| | - David H Broide
- Department of Medicine, University of California San Diego, La Jolla, Calif
| | - David Proud
- Airway Inflammation Research Group, Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, University of Calgary Faculty of Medicine, Calgary, Alberta, Canada
| | - Bruce L Zuraw
- Veterans Medical Research Foundation, University of California San Diego, La Jolla, Calif; Department of Medicine, University of California San Diego, La Jolla, Calif
| | - Michael Croft
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology, La Jolla, Calif.
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19
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Miki H, Nakahashi-Oda C, Sumida T, Shibuya A. Involvement of CD300a Phosphatidylserine Immunoreceptor in Aluminum Salt Adjuvant-Induced Th2 Responses. THE JOURNAL OF IMMUNOLOGY 2015; 194:5069-76. [PMID: 25911756 DOI: 10.4049/jimmunol.1402915] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 03/26/2015] [Indexed: 12/24/2022]
Abstract
Aluminum salt (alum) has been widely used for vaccinations as an adjuvant. Alum not only enhances immunogenicity but also induces Th2 cell immune responses. However, the mechanisms of how alum enhances Th2 cell immune responses have been controversial. In an experimental allergic airway inflammation model, in which alum in conjunction with OVA Ag was i.p. injected for immunization, we found that apoptotic cells and inflammatory dendritic cells (iDC) expressing CD300a, an inhibitory immunoreceptor for phosphatidylserine (PS), significantly increased in number in the peritoneal cavity after the immunization. In contrast, apoptotic cells and iDCs were scarcely observed in the peritoneal cavity after injection of OVA alone. In CD300a-deficient mice, eosinophil infiltration in bronchoalveolar lavage fluid, serum IgE levels, and airway hyperreactivity were significantly decreased after immunization with alum plus OVA compared with wild-type mice. In vitro, iDCs purified from CD300a-deficient mice after the immunization induced significantly less IL-4 production from OT-II naive CD4(+) T cells after coculture with OVA Ag. CD300a expressed on iDCs bound PS on apoptotic cells in the peritoneal cavity after injection of OVA plus alum. Blocking CD300a interaction with PS by injection of a neutralizing anti-CD300a Ab resulted in inhibition of the development of allergic airway inflammation. These results suggest that CD300a is involved in alum-induced Th2 skewing.
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Affiliation(s)
- Haruka Miki
- Department of Immunology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan; Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Chigusa Nakahashi-Oda
- Department of Immunology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Takayuki Sumida
- Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Akira Shibuya
- Department of Immunology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan; Life Science Center of Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan; and Japan Science and Technology Agency, Core Research for Evolutional Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
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20
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Lambrecht BN, Hammad H. The immunology of asthma. Nat Immunol 2015; 16:45-56. [PMID: 25521684 DOI: 10.1038/ni.3049] [Citation(s) in RCA: 1110] [Impact Index Per Article: 123.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/07/2014] [Indexed: 12/12/2022]
Abstract
Asthma is a common disease that affects 300 million people worldwide. Given the large number of eosinophils in the airways of people with mild asthma, and verified by data from murine models, asthma was long considered the hallmark T helper type 2 (TH2) disease of the airways. It is now known that some asthmatic inflammation is neutrophilic, controlled by the TH17 subset of helper T cells, and that some eosinophilic inflammation is controlled by type 2 innate lymphoid cells (ILC2 cells) acting together with basophils. Here we discuss results from in-depth molecular studies of mouse models in light of the results from the first clinical trials targeting key cytokines in humans and describe the extraordinary heterogeneity of asthma.
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Affiliation(s)
- Bart N Lambrecht
- 1] VIB Inflammation Research Center, Ghent University, Ghent, Belgium. [2] Department of Respiratory Medicine, University Hospital Ghent, Ghent, Belgium. [3] Department of Pulmonary Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - Hamida Hammad
- 1] VIB Inflammation Research Center, Ghent University, Ghent, Belgium. [2] Department of Respiratory Medicine, University Hospital Ghent, Ghent, Belgium
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21
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Doherty TA. At the bench: understanding group 2 innate lymphoid cells in disease. J Leukoc Biol 2015; 97:455-67. [PMID: 25473099 PMCID: PMC4338843 DOI: 10.1189/jlb.5bt0814-374r] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 10/21/2014] [Accepted: 10/29/2014] [Indexed: 12/18/2022] Open
Abstract
The conventional paradigm of type 2 inflammatory responses is characterized by activation of CD4(+) Th2 cells that produce IL-4, IL-5, and IL-13, resulting in tissue eosinophil infiltration, mucus metaplasia, AHR, and IgE production. However, the recent discovery of ILC2s in mice and humans has brought forth a novel pathway in type 2 immunity that may work independent of, or in concert with, adaptive Th2 responses. ILC2s were described initially as lineage-negative lymphocytes that produce high levels of Th2 cytokines IL-5 and IL-13 in response to IL-25 and IL-33 and promote protection against helminth infections. More recent investigations have identified novel upstream regulators, as well as novel ILC2 products. ILC2s are found in mucosal surfaces, including respiratory tract and skin, and studies from experimental asthma and atopic dermatitis models support a role for ILC2s in promoting type 2 inflammatory responses. There are many unanswered questions about the role of ILC2s in chronic allergic diseases, including how ILC2s or upstream pathways can be targeted for therapy. As ILC2s are not antigen specific and may be activated after exposures to a variety of infectious agents and irritants thought to contribute to respiratory and skin diseases, future strategies to target ILC2 function in human disease may be promising. Our intent is to identify priority areas for ILC2 translational research based on basic research insights.
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Affiliation(s)
- Taylor A Doherty
- Department of Medicine, University of California San Diego, La Jolla, California, USA
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22
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Christianson CA, Goplen NP, Zafar I, Irvin C, Good JT, Rollins DR, Gorentla B, Liu W, Gorska MM, Chu H, Martin RJ, Alam R. Persistence of asthma requires multiple feedback circuits involving type 2 innate lymphoid cells and IL-33. J Allergy Clin Immunol 2015; 136:59-68.e14. [PMID: 25617223 DOI: 10.1016/j.jaci.2014.11.037] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/17/2014] [Accepted: 11/19/2014] [Indexed: 01/18/2023]
Abstract
BACKGROUND Asthma in a mouse model spontaneously resolves after cessation of allergen exposure. We developed a mouse model in which asthma features persisted for 6 months after cessation of allergen exposure. OBJECTIVE We sought to elucidate factors contributing to the persistence of asthma. METHODS We used a combination of immunologic, genetic, microarray, and pharmacologic approaches to dissect the mechanism of asthma persistence. RESULTS Elimination of T cells though antibody-mediated depletion or lethal irradiation and transplantation of recombination-activating gene (Rag1)(-/-) bone marrow in mice with chronic asthma resulted in resolution of airway inflammation but not airway hyperreactivity or remodeling. Elimination of T cells and type 2 innate lymphoid cells (ILC2s) through lethal irradiation and transplantation of Rag2(-/-)γc(-/-) bone marrow or blockade of IL-33 resulted in resolution of airway inflammation and hyperreactivity. Persistence of asthma required multiple interconnected feedback and feed-forward circuits between ILC2s and epithelial cells. Epithelial IL-33 induced ILC2s, a rich source of IL-13. The latter directly induced epithelial IL-33, establishing a positive feedback circuit. IL-33 autoinduced, generating another feedback circuit. IL-13 upregulated IL-33 receptors and facilitated IL-33 autoinduction, thus establishing a feed-forward circuit. Elimination of any component of these circuits resulted in resolution of chronic asthma. In agreement with the foregoing, IL-33 and ILC2 levels were increased in the airways of asthmatic patients. IL-33 levels correlated with disease severity. CONCLUSIONS We present a critical network of feedback and feed-forward interactions between epithelial cells and ILC2s involved in maintaining chronic asthma. Although T cells contributed to the severity of chronic asthma, they were redundant in maintaining airway hyperreactivity and remodeling.
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Affiliation(s)
| | - Nicholas P Goplen
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo
| | - Iram Zafar
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo
| | - Chaoyu Irvin
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo
| | - James T Good
- Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, Colo
| | - Donald R Rollins
- Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, Colo
| | | | - Weimin Liu
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo
| | - Magdalena M Gorska
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo; University of Colorado Denver, Denver, Colo
| | - HongWei Chu
- Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, Colo; University of Colorado Denver, Denver, Colo
| | - Richard J Martin
- Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, Colo; University of Colorado Denver, Denver, Colo
| | - Rafeul Alam
- Division of Allergy and Immunology, National Jewish Health, Denver, Colo; University of Colorado Denver, Denver, Colo.
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23
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Lee MR, Shim D, Yoon J, Jang HS, Oh SW, Suh SH, Choi JH, Oh GT. Retnla overexpression attenuates allergic inflammation of the airway. PLoS One 2014; 9:e112666. [PMID: 25415454 PMCID: PMC4240542 DOI: 10.1371/journal.pone.0112666] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 10/10/2014] [Indexed: 02/07/2023] Open
Abstract
Resistin-like molecule alpha (Retnla), also known as ‘Found in inflammatory zone 1’, is a secreted protein that has been found in bronchoalveolar lavage (BAL) fluid of ovalbumin (OVA)-induced asthmatic mice and plays a role as a regulator of T helper (Th)2-driven inflammation. However, the role of Retnla in the progress of Th2-driven airway inflammation is not yet clear. To better understand the function of Retnla in Th2-driven airway inflammation, we generated Retnla-overexpressing (Retnla-Tg) mice. Retnla-Tg mice showed increased expression of Retnla protein in BAL fluid and airway epithelial cells. Retnla overexpression itself did not induce any alteration in lung histology or lung function compared to non-Tg controls. However, OVA-sensitized/challenged Retnla-Tg mice had decreased numbers of cells in BAL and inflammatory cells accumulating in the lung. They also showed a reduction in mucus production in the airway epithelium, concomitant with a decreased Muc5ac level. These results were accompanied by reduced levels of Th2 cytokines, including interleukin (IL)-4, IL-5, and IL-13, with no effect on levels of OVA-specific immunoglobulin isotypes. Furthermore, phosphorylation of ERK was markedly reduced in the lungs of OVA-challenged Retnla-Tg mice. Taken together, these results indicates that Retnla protects against Th2-mediated inflammation in an experimental mouse model of asthma, suggesting that therapeutic approaches to enhance the production of Retnla or Retnla-like molecules could be valuable for preventing allergic lung inflammation.
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Affiliation(s)
- Mi-Ran Lee
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Dahee Shim
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Jihye Yoon
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Hyung Seok Jang
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Se-Woong Oh
- Yuhan Research Institute, Yuhan Corporation, Gongse-Dong, Giheung-Gu, Yongin-Si, Gyeonggi-Do, Republic of Korea
| | - Suk Hyo Suh
- Department of Physiology Medical School, Ewha Womans University, Seoul, Republic of Korea
| | - Jae-Hoon Choi
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
- * E-mail: (JHC); (GTO)
| | - Goo Taeg Oh
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
- * E-mail: (JHC); (GTO)
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24
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Neunkirchner A, Schmetterer KG, Pickl WF. Lymphocyte-based model systems for allergy research: a historic overview. Int Arch Allergy Immunol 2014; 163:259-91. [PMID: 24777172 DOI: 10.1159/000360163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
During the last decades, a multitude of studies applying distinct in vitro and in vivo model systems have contributed greatly to our better understanding of the initiation and regulation of inflammatory processes leading to allergic diseases. Over the years, it has become evident that among lymphocytes, not only IgE-producing B cells and allergy-orchestrating CD4(+) helper cells but also cytotoxic CD8(+) T cells, γδ-T cells and innate lymphoid cells, as well as regulatory lymphocytes, might critically shape the immune response towards usually innocuous allergens. In this review, we provide a historic overview of pioneering work leading to the establishment of important lymphocyte-based model systems for allergy research. Moreover, we contrast the original findings with our currently more refined knowledge to appreciate the actual validity of the respective models and to reassess the conclusions obtained from them. Conflicting studies and interpretations are identified and discussed. The tables are intended to provide an easy overview of the field not only for scientists newly entering the field but also for the broader readership interested in updating their knowledge. Along those lines, herein we discuss in vitro and in vivo approaches to the investigation of lymphocyte effector cell activation, polarization and regulation, and describe depletion and adoptive transfer models along with gene knockout and transgenic (tg) methodologies. In addition, novel attempts to establish humanized T cell antigen receptor tg mouse models for allergy research are described and discussed.
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Affiliation(s)
- Alina Neunkirchner
- Christian Doppler Laboratory for Immunomodulation, Medical University of Vienna, Vienna, Austria
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Felsen CN, Savariar EN, Whitney M, Tsien RY. Detection and monitoring of localized matrix metalloproteinase upregulation in a murine model of asthma. Am J Physiol Lung Cell Mol Physiol 2014; 306:L764-74. [PMID: 24508733 DOI: 10.1152/ajplung.00371.2013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Extracellular proteases including matrix metalloproteinases (MMPs) are speculated to play a significant role in chronic lung diseases, such as asthma. Although increased protease expression has been correlated with lung pathogenesis, the relationship between localized enzyme activity and disease progression remains poorly understood. We report the application of MMP-2/9 activatable cell-penetrating peptides (ACPPs) and their ratiometric analogs (RACPPs) for in vivo measurement of protease activity and distribution in the lungs of mice that were challenged with the allergen ovalbumin. MMP-2/9 activity was increased greater than twofold in whole, dissected lungs from acutely challenged mice compared with control mice (P=1.8×10(-4)). This upregulation of MMP-2/9 activity was localized around inflamed airways with 1.6-fold higher protease-dependent ACPP uptake surrounding diseased airways compared with adjacent, pathologically normal lung parenchyma (P=0.03). MMP-2/9 activity detected by ACPP cleavage colocalized with gelatinase activity measured with in situ dye-quenched gelatin. For comparison, neutrophil elastase activity and thrombin activity, detected with elastase- and thrombin-cleavable RACPPs, respectively, were not significantly elevated in acutely allergen-challenged mouse lungs. The results demonstrate that ACPPs, like the MMP-2/9-activated and related ACPPs, allow for real-time detection of protease activity in a murine asthma model, which should improve our understanding of protease activation in asthma disease progression and help elucidate new therapy targets or act as a mechanism for therapeutic drug delivery.
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Affiliation(s)
- Csilla N Felsen
- Howard Hughes Medical Institute, Univ. California San Diego, 9500 Gilman Dr., George Palade 310, La Jolla, CA 92093-0647.
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Dietary fish oil and DHA down-regulate antigen-activated CD4+ T-cells while promoting the formation of liquid-ordered mesodomains. Br J Nutr 2013; 111:254-60. [PMID: 23962659 DOI: 10.1017/s0007114513002444] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have demonstrated previously that n-3 PUFA endogenously produced by fat-1 transgenic mice regulate CD4+ T-cell function by affecting the formation of lipid rafts, liquid-ordered mesodomains in the plasma membrane. In the present study, we tested the effects of dietary sources of n-3 PUFA, i.e. fish oil (FO) or purified DHA, when compared with an n-6 PUFA-enriched maize oil control diet in DO11.10 T-cell receptor transgenic mice. Dietary n-3 PUFA were enriched in CD4+ T-cells, resulting in the increase of the n-3:n-6 ratio. Following antigen-specific CD4+ T-cell activation by B-lymphoma cells pulsed with the ovalbumin 323-339 peptide, the formation of liquid-ordered mesodomains at the immunological synapse relative to the whole CD4+ T-cell, as assessed by Laurdan labelling, was increased (P< 0·05) in the FO-fed group. The FO diet also suppressed (P< 0·05) the co-localisation of PKCθ with ganglioside GM1 (monosialotetrahexosylganglioside), a marker for lipid rafts, which is consistent with previous observations. In contrast, the DHA diet down-regulated (P< 0·05) PKCθ signalling by moderately affecting the membrane liquid order at the immunological synapse, suggesting the potential contribution of the other major n-3 PUFA components of FO, including EPA.
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Kim MS, Cho KA, Cho YJ, Woo SY. Effects of interleukin-9 blockade on chronic airway inflammation in murine asthma models. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2013; 5:197-206. [PMID: 23814672 PMCID: PMC3695233 DOI: 10.4168/aair.2013.5.4.197] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 09/29/2012] [Accepted: 10/24/2012] [Indexed: 01/08/2023]
Abstract
Purpose Asthma is a chronic inflammatory disease of the airways associated with structural changes and airway remodeling. Interleukin (IL)-9 has pleiotropic effects on both inflammatory cells and airway structural cells, which are involved in asthma pathogenesis. We evaluated the effects of IL-9 blockade on chronic airway inflammation. Methods Acute airway inflammation was induced in Balb/c mice using aerosolized ovalbumin (OVA), whereas chronic asthma was induced by OVA exposure for 5 weeks with anti-IL-9 or isotype-matched antibody (Ab) treatment during the OVA challenge. Inflammatory cells in bronchoalveolar lavage fluid (BALF) were counted and lung tissues were stained to detect cellular infiltration, mucus deposition, and collagen accumulation. The levels of interferon (IFN)-γ, IL-4, IL-5, IL-9, IL-17, and immunoglobulin E (IgE) in BALF were measured using enzyme linked immunosorbent assays, and profiles of inflammatory cells and subsets of T helper (Th) cells were analyzed using flow cytometry. Results IL-9, IL-17, and IFN-γ levels were significantly increased in the chronic group compared to the acute asthma group. However, the number of IL-9-positive cells was not affected, with a decrease in Th17 cells in OVA-challenged caspase-1 knockout mice. Numbers of eosinophils, neutrophils, B cells, mast cells, and Th17 cells decreased after administration of anti-IL-9 Ab. Total IgE, IL-5, IL-9, and IL-17 levels were also lower in the anti-IL-9 group. Conclusions Our results suggest that anti-IL-9 Ab treatment inhibits pulmonary infiltration of inflammatory cells and cytokine production, especially IL-17. These results provide a basis for the use of an anti-IL-9 Ab to combat IL-17-mediated airway inflammation.
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Affiliation(s)
- Myung Shin Kim
- Department of Internal Medicine, Soonchunhyang University Gumi Hospital, Gumi, Korea
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Heo JC, Lee SH. Alleviation of asthma-related symptoms by a derivative of L-allo threonine. Int J Mol Med 2013; 31:881-7. [PMID: 23381610 DOI: 10.3892/ijmm.2013.1265] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/12/2012] [Indexed: 11/05/2022] Open
Abstract
Chronic asthma is characterized by inflammatory cell infiltration and tissue remodeling, leading to subepithelial inflammation. In order to evaluate the anti-asthmatic activity of LX519290, a derivative of L-allo threonine, we performed several in vitro and in vivo anti-asthmatic assays. Using ovalbumin (OVA)-sensitized C57BL/6 mice, the effects of LX519290 on lung inflammation and cytokine expression in the asthmatic animals were analyzed. Treatment with this compound increased IFN-γ and decreased IL-10 mRNA expression. LX519290 potently decreased, not only immune cell infiltration in the lung, but also IL-4 and IL-13 cytokine levels in the serum of OVA-treated mice. The results demonstrated that LX519290 decreased the pathogenesis of chronic airway injury. Evidence from our model of OVA-induced asthma demonstrated that LX519290 inhibits immune cell infiltration, mucus hypersecretion, and inflammatory cytokine production. Collectively, our findings suggest that LX519290 has the potential to ameliorate asthmatic symptoms by treating inflammatory factors in the lung.
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Affiliation(s)
- Jin-Chul Heo
- Food and Bio-Industry Research Institute, Kyungpook National University, Daegu 702-701, Republic of Korea
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Xing JZ, Yang X, Xu P, Ang WT, Chen J. Ultrasound-enhanced monoclonal antibody production. ULTRASOUND IN MEDICINE & BIOLOGY 2012; 38:1949-1957. [PMID: 22939294 DOI: 10.1016/j.ultrasmedbio.2012.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 12/16/2011] [Accepted: 06/25/2012] [Indexed: 06/01/2023]
Abstract
With the rapidly growing demand for monoclonal antibody (mAb)-based products, new technologies are urgently needed to increase mAb production while reducing manufacturing costs. To solve this problem, we report our research findings of using low-intensity pulsed ultrasound (LIPUS) to enhance mAb production. LIPUS with frequency of 1.5 MHz and pulse repetition frequency of 1 kHz, as well as duty cycle of 20%, was used to stimulate hybridoma cells to enhance the production of mAb, anti-CD4 (hybridoma GK1.5). The enzyme-linked immunosorbent assay results show a 60.42 ± 7.63% increase of mAb expression in hybridoma cells. The evidence of structural changes of the cellular outer membrane in both transmission electron microscopy and scanning electron microscopy images and the more than 20% lactate dehydrogenase release indicates that the increased mAb production is related to the increased cell permeability induced by LIPUS. This value-added ultrasound technology provides a potential cost-effective solution for pharmaceutical companies to manufacture mAb-based drugs. The technology, in turn, can reduce the drug manufacturing costs and decrease health care spending.
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Affiliation(s)
- James Z Xing
- Department of Laboratory Medicine and Pathology, University of Alberta, Canada.
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Kang BN, Ha SG, Ge XN, Reza Hosseinkhani M, Bahaie NS, Greenberg Y, Blumenthal MN, Puri KD, Rao SP, Sriramarao P. The p110δ subunit of PI3K regulates bone marrow-derived eosinophil trafficking and airway eosinophilia in allergen-challenged mice. Am J Physiol Lung Cell Mol Physiol 2012; 302:L1179-91. [PMID: 22427531 DOI: 10.1152/ajplung.00005.2012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Trafficking and recruitment of eosinophils during allergic airway inflammation is mediated by the phosphatidylinositol 3-kinase (PI3K) family of signaling molecules. The role played by the p110δ subunit of PI3K (PI3K p110δ) in regulating eosinophil trafficking and recruitment was investigated using a selective pharmacological inhibitor (IC87114). Treatment with the PI3K p110δ inhibitor significantly reduced murine bone marrow-derived eosinophil (BM-Eos) adhesion to VCAM-1 as well as ICAM-1 and inhibited activation-induced changes in cell morphology associated with reduced Mac-1 expression and aberrant cell surface localization/distribution of Mac-1 and α4. Infused BM-Eos demonstrated significantly decreased rolling and adhesion in inflamed cremaster muscle microvessels of mice treated with IC87114 compared with vehicle-treated mice. Furthermore, inhibition of PI3K p110δ significantly attenuated eotaxin-1-induced BM-Eos migration and prevented eotaxin-1-induced changes in the cytoskeleton and cell morphology. Knockdown of PI3K p110δ with siRNA in BM-Eos resulted in reduced rolling, adhesion, and migration, as well as inhibition of activation-induced changes in cell morphology, validating its role in regulating trafficking and migration. Finally, in a mouse model of cockroach antigen-induced allergic airway inflammation, oral administration of the PI3K p110δ inhibitor significantly inhibited airway eosinophil recruitment, resulting in attenuation of airway hyperresponsiveness in response to methacholine, reduced mucus secretion, and expression of proinflammatory molecules (found in inflammatory zone-1 and intelectin-1). Overall, these findings indicate the important role played by PI3K p110δ in mediating BM-Eos trafficking and migration by regulating adhesion molecule expression and localization/distribution as well as promoting changes in cell morphology that favor recruitment during inflammation.
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Affiliation(s)
- Bit Na Kang
- Laboratory of Allergic Diseases and Inflammation, Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, 55108, USA
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Lin Y, Yan H, Xiao Y, Piao H, Xiang R, Jiang L, Chen H, Huang K, Guo Z, Zhou W, Lu B, Gao J. Attenuation of antigen-induced airway hyperresponsiveness and inflammation in CXCR3 knockout mice. Respir Res 2011; 12:123. [PMID: 21939519 PMCID: PMC3199245 DOI: 10.1186/1465-9921-12-123] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 09/22/2011] [Indexed: 02/07/2023] Open
Abstract
Background CD8+ T cells participate in airway hyperresponsiveness (AHR) and allergic pulmonary inflammation that are characteristics of asthma. CXCL10 by binding to CXCR3 expressed preferentially on activated CD8+ T cells, attracts T cells homing to the lung. We studied the contribution and limitation of CXCR3 to AHR and airway inflammation induced by ovalbumin (OVA) using CXCR3 knockout (KO) mice. Methods Mice were sensitized and challenged with OVA. Lung histopathological changes, AHR, cellular composition and levels of inflammatory mediators in bronchoalveolar lavage (BAL) fluid, and lungs at mRNA and protein levels, were compared between CXCR3 KO mice and wild type (WT) mice. Results Compared with the WT controls, CXCR3 KO mice showed less OVA-induced infiltration of inflammatory cells around airways and vessels, and less mucus production. CXCR3 KO mice failed to develop significant AHR. They also demonstrated significantly fewer CD8+ T and CD4+ T cells in BAL fluid, lower levels of TNFα and IL-4 in lung tissue measured by real-time RT-PCR and in BAL fluid by ELISA, with significant elevation of IFNγ mRNA and protein expression levels. Conclusions We conclude that CXCR3 is crucial for AHR and airway inflammation by promoting recruitment of more CD8+ T cells, as well as CD4+ T cells, and initiating release of proinflammatory mediators following OVA sensitization and challenge. CXCR3 may represent a novel therapeutic target for asthma.
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Affiliation(s)
- Yi Lin
- Department of Respiratory Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Al Heialy S, McGovern TK, Martin JG. Insights into asthmatic airway remodelling through murine models. Respirology 2011; 16:589-97. [PMID: 21435099 DOI: 10.1111/j.1440-1843.2011.01974.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Asthma is a chronic disorder of the airways associated in many instances with structural changes of the airways, termed airway remodelling. Irritant and allergen-induced murine models have been used to further understand the mechanisms of airway remodelling. The infiltration of the airways by inflammatory cells, such as T lymphocytes, mast cells, eosinophils, neutrophils and macrophages after repeated allergen challenges may be important effectors in the initiation and perpetuation of airway remodelling through the release of inflammatory mediators and growth factors. Interleukins-4 and -13 have been widely studied in experimental models, and have been shown to play a significant role in airway remodelling. Recently, a role for Th17 cells has been established. Other mediators involved in this process are ligands of the epidermal growth factor receptor, matrix metalloproteases and cysteinyl leukotrienes. A better understanding of the mechanisms leading to airway remodelling in allergic diseases may lead to the identification of novel therapeutic strategies but validation in human subjects is required for potential targets.
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Affiliation(s)
- Saba Al Heialy
- Meakins-Christie Laboratories, McGill University, Montreal, Quebec, Canada
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Nabe T, Morishita T, Matsuya K, Ikedo A, Fujii M, Mizutani N, Yoshino S. Complete dependence on CD4+ cells in late asthmatic response, but limited contribution of the cells to airway remodeling in sensitized mice. J Pharmacol Sci 2011; 116:373-83. [PMID: 21778663 DOI: 10.1254/jphs.11083fp] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
It is known that the late asthmatic response (LAR), a characteristic feature of asthma, is closely associated with CD4+ Th2 cell-mediated allergic inflammation. Airway remodeling is also a pathogenesis of asthma, but literature reporting roles of CD4+ cells in the remodeling is controversial. There has been no study that simultaneously assessed the roles of CD4+ cells in both LAR and airway remodeling. Sensitized mice were intratracheally challenged with ovalbumin 4 times. Treatment with an anti-CD4 monoclonal antibody (mAb) before the 1st challenge almost completely abolished increase in CD4+ cells in the tissues after the 4th challenge. The late phase increase in airway resistance after the 4th challenge was also completely inhibited by anti-CD4 mAb. Parameters of airway remodeling, subepithelial fibrosis and epithelial thickening were attenuated by treatment, whereas the inhibition was only 30% - 40%. Bronchial smooth muscle thickening was not affected. Because interleukin (IL)-5 production as well as eosinophilia was effectively suppressed by anti-CD4 mAb, the effect of anti-IL-5 mAb was also examined, resulting in no inhibition of airway remodeling. Collectively, although the LAR was completely dependent on CD4+ cell activation, airway remodeling was only partially dependent on the cell.
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Affiliation(s)
- Takeshi Nabe
- Department of Pharmacology, Kyoto Pharmaceutical University, Japan.
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The tumor necrosis factor family member LIGHT is a target for asthmatic airway remodeling. Nat Med 2011; 17:596-603. [PMID: 21499267 DOI: 10.1038/nm.2356] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 03/16/2011] [Indexed: 01/10/2023]
Abstract
Individuals with chronic asthma show a progressive decline in lung function that is thought to be due to structural remodeling of the airways characterized by subepithelial fibrosis and smooth muscle hyperplasia. Here we show that the tumor necrosis factor (TNF) family member LIGHT is expressed on lung inflammatory cells after allergen exposure. Pharmacological inhibition of LIGHT using a fusion protein between the IgG Fc domain and lymphotoxin β receptor (LTβR) reduces lung fibrosis, smooth muscle hyperplasia and airway hyperresponsiveness in mouse models of chronic asthma, despite having little effect on airway eosinophilia. LIGHT-deficient mice also show a similar impairment in fibrosis and smooth muscle accumulation. Blockade of LIGHT suppresses expression of lung transforming growth factor-β (TGF-β) and interleukin-13 (IL-13), cytokines implicated in remodeling in humans, whereas exogenous administration of LIGHT to the airways induces fibrosis and smooth muscle hyperplasia, Thus, LIGHT may be targeted to prevent asthma-related airway remodeling.
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Soroosh P, Doherty TA, So T, Mehta AK, Khorram N, Norris PS, Scheu S, Pfeffer K, Ware C, Croft M. Herpesvirus entry mediator (TNFRSF14) regulates the persistence of T helper memory cell populations. ACTA ACUST UNITED AC 2011; 208:797-809. [PMID: 21402741 PMCID: PMC3135347 DOI: 10.1084/jem.20101562] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Blocking HVEM–LIGHT interactions on T cells reduces the persistence of antigen-specific memory T cell populations after secondary expansion through decreased Akt activity and loss of Bcl-2 expression. Memory T helper cells (Th cells) play an important role in host defense against pathogens but also contribute to the pathogenesis of inflammatory disorders. We found that a soluble decoy lymphotoxin β receptor (LT-βR)–Fc, which can block tumor necrosis factor (TNF)–related ligands LIGHT (TNFSF14) and LT-αβ binding to the herpesvirus entry mediator (HVEM) and the LT-βR, inhibited the accumulation of memory Th2 cells after antigen encounter and correspondingly reduced inflammatory responses in vivo. Showing that this was a function of the receptor for LIGHT, antigen-specific memory CD4 T cells deficient in HVEM were also unable to persist, despite having a normal immediate response to recall antigen. HVEM−/− memory Th2 cells displayed reduced activity of PKB (protein kinase B; Akt), and constitutively active Akt rescued their survival and restored strong inflammation after antigen rechallenge. This was not restricted to Th2 memory cells as HVEM-deficient Th1 memory cells were also impaired in surviving after encounter with recall antigen. Furthermore, the absence of LIGHT on T cells recapitulated the defect seen with the absence of HVEM, suggesting that activated T cells communicate through LIGHT–HVEM interactions. Collectively, our results demonstrate a critical role of HVEM signals in the persistence of large pools of memory CD4 T cells.
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Affiliation(s)
- Pejman Soroosh
- Division of Molecular Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
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The other T helper cells in asthma pathogenesis. J Allergy (Cairo) 2010; 2010:519298. [PMID: 20976014 PMCID: PMC2957587 DOI: 10.1155/2010/519298] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Accepted: 06/18/2010] [Indexed: 12/16/2022] Open
Abstract
The complex phenotype of allergic bronchial asthma involves a variable degree of bronchoobstruction, increased mucus production, and airway remodeling. So far it is suggested that it arises from multiple interactions of infiltrating and structural cells in the context of chronic airway inflammation that is orchestrated by T helper 2 (TH2) cells. By secreting a plethora of typical mediators such as interleukin (IL) 4, IL-5, and IL-13, these cells hold a key position in asthma pathogenesis. However, therapeutic approaches targeting these TH2-type mediators failed to improve asthma symptoms and impressively showed that asthma pathogenesis cannot be reduced by TH2 cell functions. Recently, other T helper cells, that is, TH9 and TH17 cells, have been identified and these cells also contribute to asthma pathogenesis, the processes leading to formation or aggravation of asthma. Furthermore, TH25 cells, TH3 cells, and regulatory T cells have also been implicated in asthma pathogenesis. This paper aims at summarizing recent insights about these new T helper cells in asthma pathogenesis.
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Current world literature. Curr Opin Allergy Clin Immunol 2010; 10:87-92. [PMID: 20026987 DOI: 10.1097/aci.0b013e3283355458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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IL-12 can alleviate Th17-mediated allergic lung inflammation through induction of pulmonary IL-10 expression. Mucosal Immunol 2010; 3:301-11. [PMID: 20237464 PMCID: PMC3816527 DOI: 10.1038/mi.2010.9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Interleukin (IL)-12 has been shown to suppress T helper type 2 (Th2)-induced pathogenesis that is associated with allergic asthma, largely through interferon (IFN)-gamma production. We have recently shown that in the absence of T-bet, the major regulator of IFN-gamma expression, allergic lung inflammation is primarily associated with IL-17-associated recruitment of neutrophils into the pulmonary tract of mice. In the absence of T-bet, exogenous IL-12 was still able to suppress neutrophilic infiltration and to diminish levels of IL-17, IL-23, and IL-23R, as well as retinoic acid-related orphan receptor gamma t, the transcriptional regulator of the Th17 pathway. The same effects were observed in T-bet(-/-) IFN-gamma(-/-) double knockout mice, showing an IFN-gamma-independent effect of IL-12 in this model. IL-10 expression in the lungs of T-bet-deficient mice was significantly increased after IL-12 treatment, and inoculation of anti-IL-10R mAb completely reversed the ability of IL-12 to suppress histological inflammation, recruitment of inflammatory cell subsets into the lung, bronchiole hyperresponsiveness, and IL-17 production. We conclude that Th17-mediated allergic lung inflammation that becomes dominant in the absence of effective IFN-gamma signaling can be effectively suppressed by IL-12 through an IL-10-dependent mechanism.
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Koh YI, Shim JU, Lee JH, Chung IJ, Min JJ, Rhee JH, Lee HC, Chung DH, Wi JO. Natural killer T cells are dispensable in the development of allergen-induced airway hyperresponsiveness, inflammation and remodelling in a mouse model of chronic asthma. Clin Exp Immunol 2010; 161:159-70. [PMID: 20456411 DOI: 10.1111/j.1365-2249.2010.04151.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Natural killer T (NK T) cells have been shown to play an essential role in the development of allergen-induced airway hyperresponsiveness (AHR) and/or airway inflammation in mouse models of acute asthma. Recently, NK T cells have been reported to be required for the development of AHR in a virus induced chronic asthma model. We investigated whether NK T cells were required for the development of allergen-induced AHR, airway inflammation and airway remodelling in a mouse model of chronic asthma. CD1d-/- mice that lack NK T cells were used for the experiments. In the chronic model, AHR, eosinophilic inflammation, remodelling characteristics including mucus metaplasia, subepithelial fibrosis and increased mass of the airway smooth muscle, T helper type 2 (Th2) immune response and immunoglobulin (Ig)E production were equally increased in both CD1d-/- mice and wild-type mice. However, in the acute model, AHR, eosinophilic inflammation, Th2 immune response and IgE production were significantly decreased in the CD1d-/- mice compared to wild-type. CD1d-dependent NK T cells may not be required for the development of allergen-induced AHR, eosinophilic airway inflammation and airway remodelling in chronic asthma model, although they play a role in the development of AHR and eosinophilic inflammation in acute asthma model.
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Affiliation(s)
- Y-I Koh
- Department of Allergy, Asthma and Clinical Immunology and Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, South Korea.
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Abstract
Helper CD4(+) T-cell subsets have improved our understanding of adaptive immunity in humans and in animal models of disease. These include T helper type 1 (Th1), Th2 and the interleukin-17 (IL-17) -producing population 'Th17'. Th2 cells have been described as orchestrating the immune response in allergic disease based on studies with patient samples and animal models. The cytokine IL-9 has largely been regarded as a Th2 cytokine that makes multifocal contributions to allergic disease. Recent data suggest that under certain conditions relevant to chronic disease (IL-4 and transforming growth factor-beta), a distinct population of IL-9-producing 'Th9' helper T cells can exist. The contribution of Th9 cells in allergic disease is currently unknown, and this review will propose a model for how these cells may regulate chronic allergic inflammation.
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Affiliation(s)
- Pejman Soroosh
- Division of Molecular Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
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Durrant DM, Gaffen SL, Riesenfeld EP, Irvin CG, Metzger DW. Development of allergen-induced airway inflammation in the absence of T-bet regulation is dependent on IL-17. THE JOURNAL OF IMMUNOLOGY 2009; 183:5293-300. [PMID: 19783683 DOI: 10.4049/jimmunol.0803109] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Dysfunctional expression of T-bet, a transcription factor that is critical for IFN-gamma production, has been implicated in the development of asthma. To investigate in detail the mechanisms responsible for exacerbated disease in the absence of T-bet expression, BALB/c wild-type (WT) and T-bet(-/-) mice were used in a murine model of OVA-induced allergic lung inflammation. Following OVA challenge, T-bet(-/-) mice displayed increased histological inflammation in the lungs as well as greater thickening of the bronchiole linings, increased numbers of eosinophils and neutrophils in the lung, and enhanced airway hyperresponsiveness, compared with WT mice. However, the production of Th2 cytokines in T-bet(-/-) mice did not appear to be significantly greater than in WT mice. Interestingly, a marked increase in the levels of the proinflammatory cytokine IL-17 was observed in T-bet(-/-) mice. Neutralization of pulmonary IL-17 in T-bet(-/-) mice by anti-IL-17 mAb treatment during OVA challenge resulted in decreased levels of neutrophilic infiltration into the airways and decreased airway inflammation, essentially reversing the development of allergic asthma development. These findings indicate that IL-17 is a key mediator of airway inflammation in the absence of T-bet. The results of this study suggest a possible target for therapeutic intervention of human asthma.
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Affiliation(s)
- Douglas M Durrant
- Center for Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
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Song DJ, Cho JY, Lee SY, Miller M, Rosenthal P, Soroosh P, Croft M, Zhang M, Varki A, Broide DH. Anti-Siglec-F antibody reduces allergen-induced eosinophilic inflammation and airway remodeling. THE JOURNAL OF IMMUNOLOGY 2009; 183:5333-41. [PMID: 19783675 DOI: 10.4049/jimmunol.0801421] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Siglec-F is a sialic acid-binding Ig superfamily receptor that is highly expressed on eosinophils. We have investigated whether administration of an anti-Siglec-F Ab to OVA-challenged wild-type mice would reduce levels of eosinophilic inflammation and levels of airway remodeling. Mice sensitized to OVA and challenged repetitively with OVA for 1 mo who were administered an anti-Siglec-F Ab had significantly reduced levels of peribronchial eosinophilic inflammation and significantly reduced levels of subepithelial fibrosis as assessed by either trichrome staining or lung collagen levels. The anti-Siglec-F Ab reduced the number of bone marrow, blood, and tissue eosinophils, suggesting that the anti-Siglec-F Ab was reducing the production of eosinophils. Administration of a F(ab')(2) fragment of an anti-Siglec-F Ab also significantly reduced levels of eosinophilic inflammation in the lung and blood. FACS analysis demonstrated increased numbers of apoptotic cells (annexin V(+)/CCR3(+) bronchoalveolar lavage and bone marrow cells) in anti-Siglec-F Ab-treated mice challenged with OVA. The anti-Siglec-F Ab significantly reduced the number of peribronchial major basic protein(+)/TGF-beta(+) cells, suggesting that reduced levels of eosinophil-derived TGF-beta in anti-Siglec-F Ab-treated mice contributed to reduced levels of peribronchial fibrosis. Administration of the anti-Siglec-F Ab modestly reduced levels of periodic acid-Schiff-positive mucus cells and the thickness of the smooth muscle layer. Overall, these studies suggest that administration of an anti-Siglec-F Ab can significantly reduce levels of allergen-induced eosinophilic airway inflammation and features of airway remodeling, in particular subepithelial fibrosis, by reducing the production of eosinophils and increasing the number of apoptotic eosinophils in lung and bone marrow.
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Affiliation(s)
- Dae Jin Song
- Department of Medicine, University of California San Diego, San Diego, CA 92093, USA
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