1
|
Liu P, Kang C, Zhang J, Liu Y, Liu J, Hu T, Zeng X, Qiu S. The role of dendritic cells in allergic diseases. Int Immunopharmacol 2022; 113:109449. [DOI: 10.1016/j.intimp.2022.109449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
|
2
|
NGR-modified PEG-PLGA micelles containing Shikonin enhance targeting of dendritic cells for therapy of allergic rhinitis. Int Immunopharmacol 2022; 107:108649. [DOI: 10.1016/j.intimp.2022.108649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/26/2022] [Accepted: 02/20/2022] [Indexed: 11/23/2022]
|
3
|
New Insights into the Role of PD-1 and Its Ligands in Allergic Disease. Int J Mol Sci 2021; 22:ijms222111898. [PMID: 34769327 PMCID: PMC8584538 DOI: 10.3390/ijms222111898] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 12/15/2022] Open
Abstract
Programmed cell death 1 (PD-1) and its ligands PD-L1 and PD-L2 are receptors that act in co-stimulatory and coinhibitory immune responses. Signaling the PD-1/PD-L1 or PD-L2 pathway is essential to regulate the inflammatory responses to infections, autoimmunity, and allergies, and it has been extensively studied in cancer. Allergic diseases include asthma, rhinoconjunctivitis, atopic dermatitis, drug allergy, and anaphylaxis. These overactive immune responses involve IgE-dependent activation and increased CD4+ T helper type 2 (Th2) lymphocytes. Recent studies have shown that PD-L1 and PD-L2 act to regulate T-cell activation and function. However, the main role of PD-1 and its ligands is to balance the immune response; however, the inflammatory process of allergic diseases is poorly understood. These immune checkpoint molecules can function as a brake or a kick-start to regulate the adaptive immune response. These findings suggest that PD-1 and its ligands may be a key factor in studying the exaggerated response in hypersensitivity reactions in allergies. This review summarizes the current understanding of the role of PD-1 and PD-L1 and PD-L2 pathway regulation in allergic diseases and how this immunomodulatory pathway is currently being targeted to develop novel therapeutic immunotherapy.
Collapse
|
4
|
Trained immunity and tolerance in innate lymphoid cells, monocytes, and dendritic cells during allergen-specific immunotherapy. J Allergy Clin Immunol 2020; 147:1865-1877. [PMID: 33039478 DOI: 10.1016/j.jaci.2020.08.042] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/07/2020] [Accepted: 08/17/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Despite the efficacy of allergen-specific immunotherapy (AIT), the role of trained immunity and tolerance in this process has not been elucidated. OBJECTIVE Here, we have performed a comprehensive longitudinal analysis of the systemic innate immune cell repertoire during the course of AIT. METHODS Patients with allergy received standard preseasonal subcutaneous AIT with allergoids to birch and/or grass. Healthy controls were monitored without any intervention. Flow cytometry of innate lymphoid cell (ILC), natural killer cell, monocyte cell, and dendritic cell (DC) subsets was performed at baseline, 3 months (birch season), 6 months (grass seasons), and 12 months after the therapy in patients or at similar seasonal time points in controls. Additional analyses were performed in the third-year birch and grass season. RESULTS We observed a durable decrease in group 2 ILCs and an increase of group 1 ILCs after AIT, with dynamic changes in their composition. We found that an expansion of CD127+CD25++ clusters caused observed shifts in the heterogeneity of group 1 ILCs. In addition, we observed development of CD127+CD25++c-Kit+ group 3 ILC clusters. Moreover, we found an increase in the number of intermediate monocytes in parallel with a reduction in nonclassical monocytes during the first year after AIT. Classical and intermediate monocytes presented significant heterogeneity in patients with allergy, but AIT reduced the HLA-DR++ clusters. Finally, an increase in plasmacytoid DCs and CD141+ myeloid DCs was observed in individuals with allergy, whereas the number of CD1c+ myeloid DCs was reduced during the first year of AIT. CONCLUSION AIT induces changes in the composition and heterogeneity of circulating innate immune cells and brings them to the level observed in healthy individuals. Monitoring of ILCs, monocytes, and DCs during AIT might serve as a novel biomarker strategy.
Collapse
|
5
|
Pai S, Muruganandah V, Kupz A. What lies beneath the airway mucosal barrier? Throwing the spotlight on antigen-presenting cell function in the lower respiratory tract. Clin Transl Immunology 2020; 9:e1158. [PMID: 32714552 PMCID: PMC7376394 DOI: 10.1002/cti2.1158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/22/2020] [Accepted: 06/26/2020] [Indexed: 12/12/2022] Open
Abstract
The global prevalence of respiratory infectious and inflammatory diseases remains a major public health concern. Prevention and management strategies have not kept pace with the increasing incidence of these diseases. The airway mucosa is the most common portal of entry for infectious and inflammatory agents. Therefore, significant benefits would be derived from a detailed understanding of how immune responses regulate the filigree of the airways. Here, the role of different antigen‐presenting cells (APC) in the lower airways and the mechanisms used by pathogens to modulate APC function during infectious disease is reviewed. Features of APC that are unique to the airways and the influence they have on uptake and presentation of antigen to T cells directly in the airways are discussed. Current information on the crucial role that airway APC play in regulating respiratory infection is summarised. We examine the clinical implications of APC dysregulation in the airways on asthma and tuberculosis, two chronic diseases that are the major cause of illness and death in the developed and developing world. A brief overview of emerging therapies that specifically target APC function in the airways is provided.
Collapse
Affiliation(s)
- Saparna Pai
- Centre for Molecular Therapeutics Australian Institute of Tropical Health and Medicine James Cook University Cairns QLD Australia
| | - Visai Muruganandah
- Centre for Molecular Therapeutics Australian Institute of Tropical Health and Medicine James Cook University Cairns QLD Australia
| | - Andreas Kupz
- Centre for Molecular Therapeutics Australian Institute of Tropical Health and Medicine James Cook University Cairns QLD Australia
| |
Collapse
|
6
|
Zheng X, Sun C, Yu R, Chu X, Xu J, Liu C, Zhao M, Xu X, Xia M, Wang C. CD13-specific ligand facilitates Xanthatin nanomedicine targeting dendritic cells for therapy of refractory allergic rhinitis. Int J Pharm 2020; 577:119034. [DOI: 10.1016/j.ijpharm.2020.119034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/27/2019] [Accepted: 01/11/2020] [Indexed: 01/15/2023]
|
7
|
Xu D, Li J, Li RY, Lan T, Xiao C, Gong P. PD-L1 Expression Is Regulated By NF-κB During EMT Signaling In Gastric Carcinoma. Onco Targets Ther 2019; 12:10099-10105. [PMID: 31819504 PMCID: PMC6883928 DOI: 10.2147/ott.s224053] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose The aim of this study was to investigate the influence of epithelial-mesenchymal transition (EMT) occurring in gastric carcinoma cells and the involvement of programmed death ligand 1 (PD-L1) expression in tumor cells that undergo EMT. The mechanisms underlying PD-L1 expression during EMT in gastric carcinoma cells were also explored. Methods The capacities of migration and invasion were tested by cell scratch-wound assay and transwell chamber assay. PD-L1 expression by SGC7901 cell line and related mechanism were measured by Western blot and QRT-PCR. Results Treating with TGF-β1 promotes the motility of SGC7901 and PD-L1 expression in vitro, while activating the NF-κB signal pathway. Conclusion EMT increases the capacities of migration and invasion in gastric cancer cells, which resulted in up-regulation of PD-L1 expression via a mechanism that is dependent on NF-κB activation.
Collapse
Affiliation(s)
- Dan Xu
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| | - Jing Li
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| | - Rui-Yang Li
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| | - Ting Lan
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| | - Chi Xiao
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| | - Ping Gong
- Department of Oncology, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, People's Republic of China
| |
Collapse
|
8
|
Carenza C, Calcaterra F, Oriolo F, Di Vito C, Ubezio M, Della Porta MG, Mavilio D, Della Bella S. Costimulatory Molecules and Immune Checkpoints Are Differentially Expressed on Different Subsets of Dendritic Cells. Front Immunol 2019; 10:1325. [PMID: 31244860 PMCID: PMC6579930 DOI: 10.3389/fimmu.2019.01325] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/24/2019] [Indexed: 12/13/2022] Open
Abstract
Dendritic cells (DCs) play a crucial role in initiating and shaping immune responses. The effects of DCs on adaptive immune responses depend partly on functional specialization of distinct DC subsets, and partly on the activation state of DCs, which is largely dictated by environmental signals. Fully activated immunostimulatory DCs express high levels of costimulatory molecules, produce pro-inflammatory cytokines, and stimulate T cell proliferation, whereas tolerogenic DCs express low levels of costimulatory molecules, produce immunomodulatory cytokines and impair T cell proliferation. Relevant to the increasing use of immune checkpoint blockade in cancer treatment, signals generated from inhibitory checkpoint molecules on DC surface may also contribute to the inhibitory properties of tolerogenic DCs. Yet, our knowledge on the expression of inhibitory molecules on human DC subsets is fragmentary. Therefore, in this study, we investigated the expression of three immune checkpoints on peripheral blood DC subsets, in basal conditions and upon exposure to pro-inflammatory and anti-inflammatory stimuli, by using a flow cytometric panel that allows a direct comparison of the activatory/inhibitory phenotype of DC-lineage and inflammatory DC subsets. We demonstrated that functionally distinct DC subsets are characterized by differential expression of activatory and inhibitory molecules, and that cDC1s in particular are endowed with a unique immune checkpoint repertoire characterized by high TIM-3 expression, scarce PD-L1 expression and lack of ILT2. Notably, this unique cDC1 repertoire was subverted in a group of patients with myelodysplastic syndromes included in the study. Applied to the characterization of DCs in the tumor microenvironment, this panel has the potential to provide valuable information to be used for investigating the role of DC subsets in cancer, guiding DC-targeting treatments, and possibly identifying predictive biomarkers for clinical response to cancer immunotherapy.
Collapse
Affiliation(s)
- Claudia Carenza
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy.,Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Francesca Calcaterra
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy.,Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Ferdinando Oriolo
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy.,Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Clara Di Vito
- Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Marta Ubezio
- Cancer Center, Humanitas Reserach Hospital, Rozzano, Italy
| | | | - Domenico Mavilio
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy.,Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Silvia Della Bella
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy.,Lab of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| |
Collapse
|
9
|
Kumar S, Jeong Y, Ashraf MU, Bae YS. Dendritic Cell-Mediated Th2 Immunity and Immune Disorders. Int J Mol Sci 2019; 20:ijms20092159. [PMID: 31052382 PMCID: PMC6539046 DOI: 10.3390/ijms20092159] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells (DCs) are the professional antigen-presenting cells that recognize and present antigens to naïve T cells to induce antigen-specific adaptive immunity. Among the T-cell subsets, T helper type 2 (Th2) cells produce the humoral immune responses required for protection against helminthic disease by activating B cells. DCs induce a Th2 immune response at a certain immune environment. Basophil, eosinophil, mast cells, and type 2 innate lymphoid cells also induce Th2 immunity. However, in the case of DCs, controversy remains regarding which subsets of DCs induce Th2 immunity, which genes in DCs are directly or indirectly involved in inducing Th2 immunity, and the detailed mechanisms underlying induction, regulation, or maintenance of the DC-mediated Th2 immunity against allergic environments and parasite infection. A recent study has shown that a genetic defect in DCs causes an enhanced Th2 immunity leading to severe atopic dermatitis. We summarize the Th2 immune-inducing DC subsets, the genetic and environmental factors involved in DC-mediated Th2 immunity, and current therapeutic approaches for Th2-mediated immune disorders. This review is to provide an improved understanding of DC-mediated Th2 immunity and Th1/Th2 immune balancing, leading to control over their adverse consequences.
Collapse
Affiliation(s)
- Sunil Kumar
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Yideul Jeong
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Muhammad Umer Ashraf
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Yong-Soo Bae
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| |
Collapse
|
10
|
Jordakieva G, Jensen-Jarolim E. The impact of allergen exposure and specific immunotherapy on circulating blood cells in allergic rhinitis. World Allergy Organ J 2018; 11:19. [PMID: 30128065 PMCID: PMC6092783 DOI: 10.1186/s40413-018-0197-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 07/10/2018] [Indexed: 12/21/2022] Open
Abstract
Allergic rhinitis (AR) is an IgE-mediated inflammatory disease of the nasal mucosa with well described local immune responses during allergen exposure. The frequent association of AR with general extra-nasal symptoms and other allergic conditions, such as conjunctivitis and asthma, however, support a more systemic disease impact. In addition to acute elevation of soluble inflammatory mediators in periphery blood, a growing number of studies have reported changes in circulating blood cells after specific nasal allergen challenge or environmental allergen exposure. These findings imply an involvement of specific blood leukocyte subsets, thrombocytes and recently, erythrocytes. This review summarizes the circulating blood cell dynamics associated with allergen exposure in AR subjects reported so far. Additionally, the impact of therapy, particularly allergen-specific immunotherapy (AIT), the only currently available causal treatment reducing AR-related symptoms, is further considered in this context.
Collapse
Affiliation(s)
- Galateja Jordakieva
- 1Department of Physical Medicine, Rehabilitation and Occupational Medicine, Medical University of Vienna, Spitalgasse 23, Vienna, 1090 Austria
| | - Erika Jensen-Jarolim
- 2Department of Pathophysiology and Allergy Research, Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Spitalgasse 23, 1090 Vienna, Austria.,The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University of Vienna, Veterinaerplatz 1, Vienna, 1210 Austria.,AllergyCare, Allergy Diagnosis and Study Center Vienna, Vienna, Austria
| |
Collapse
|
11
|
Masuda C, Miyasaka T, Kawakami K, Inokuchi J, Kawano T, Dobashi-Okuyama K, Takahashi T, Takayanagi M, Ohno I. Sex-based differences in CD103 + dendritic cells promote female-predominant Th2 cytokine production during allergic asthma. Clin Exp Allergy 2018; 48:379-393. [PMID: 29288569 DOI: 10.1111/cea.13081] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 12/13/2017] [Accepted: 12/17/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND Gender disparities in adult patients with asthma regarding its prevalence and severity are mainly due to enhanced type 2 T-helper (Th2) cytokine production in female patients compared to that in male patients. However, the pathways mediating this effect remain unclear. OBJECTIVE We aimed to determine the roles of two major subsets of dendritic cells (DCs) in females, specifically those displaying CD11b or CD103, during enhanced Th2 priming after allergen exposure, using an ovalbumin-induced asthma mouse model. METHODS Sex-based differences in the number of DCs at inflamed sites, costimulatory molecule expression on DCs, and the ability of DCs to differentiate naïve CD4+ T cells into Th2 population were evaluated after allergen exposure in asthmatic mice. In addition, we assessed the role of 17β-oestradiol in CD103+ DC function during Th2 priming in vitro. RESULTS The number of CD11bhigh DCs and CD103+ DCs in the lung and bronchial lymph node (BLN) was increased to a greater extent in female mice than in male mice at 16 to 20 hours after ovalbumin (OVA) inhalation. In BLNs, CD86 and I-A/I-E expression levels and antigen uptake ability in CD103+ DCs, but not in CD11bhigh DCs, were greater in female mice than in male mice. Furthermore, CD4+ T cells cultured with CD103+ DCs from female mice produced higher levels of interleukin (IL)-4, IL-5, and IL-13, compared with CD4+ T cells cultured with CD103+ DCs from male mice. The 17β-oestradiol-oriented enhancement of CD86 expression on CD103+ DCs after allergen exposure induced the enhanced IL-5 production from CD4+ T cells. CONCLUSIONS AND CLINICAL RELEVANCE These findings suggest that with regard to asthma, enhanced Th2 cytokine production in females might be attributed to 17β-oestradiol-mediated Th2-oriented CD103+ DCs in the BLN.
Collapse
Affiliation(s)
- C Masuda
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - T Miyasaka
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - K Kawakami
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - J Inokuchi
- Division of Glycopathology, Institute of Molecular Biomembranes and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - T Kawano
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - K Dobashi-Okuyama
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - T Takahashi
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - M Takayanagi
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - I Ohno
- Center for Medical Education, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| |
Collapse
|
12
|
Vroman H, Hendriks RW, Kool M. Dendritic Cell Subsets in Asthma: Impaired Tolerance or Exaggerated Inflammation? Front Immunol 2017; 8:941. [PMID: 28848549 PMCID: PMC5552666 DOI: 10.3389/fimmu.2017.00941] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/24/2017] [Indexed: 12/14/2022] Open
Abstract
Asthma is a prevalent chronic heterogeneous inflammatory disease of the airways, leading to reversible airway obstruction, in which various inflammatory responses can be observed. Mild to moderate asthma patients often present with a Th2-mediated eosinophilic inflammation whereas in severe asthma patients, a Th17-associated neutrophilic or combined Th2 and Th17-mediated eosinophilic/neutrophilic inflammation is observed. The differentiation of these effector Th2 and Th17-cells is induced by allergen-exposed dendritic cells (DCs) that migrate toward the lung draining lymph node. The DC lineage comprises conventional DCs (cDCs) and plasmacytoid DCs (pDCs), of which the cDC lineage consists of type 1 cDCs (cDC1s) and cDC2s. During inflammation, also monocytes can differentiate into so-called monocyte-derived DCs (moDCs). These DC subsets differ both in ontogeny, localization, and in their functional properties. New identification tools and the availability of transgenic mice targeting specific DC subsets enable the investigation of how these different DC subsets contribute to or suppress asthma pathogenesis. In this review, we will discuss mechanisms used by different DC subsets to elicit or hamper the pathogenesis of both Th2-mediated eosinophilic asthma and more severe Th17-mediated neutrophilic inflammation.
Collapse
Affiliation(s)
- Heleen Vroman
- Department of Pulmonary Medicine, Erasmus MC, Rotterdam, Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC, Rotterdam, Netherlands
| | - Mirjam Kool
- Department of Pulmonary Medicine, Erasmus MC, Rotterdam, Netherlands
| |
Collapse
|
13
|
Blom RAM, Amacker M, van Dijk RM, Moser C, Stumbles PA, Blank F, von Garnier C. Pulmonary Delivery of Virosome-Bound Antigen Enhances Antigen-Specific CD4 + T Cell Proliferation Compared to Liposome-Bound or Soluble Antigen. Front Immunol 2017; 8:359. [PMID: 28439267 PMCID: PMC5383731 DOI: 10.3389/fimmu.2017.00359] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/14/2017] [Indexed: 12/18/2022] Open
Abstract
Pulmonary administration of biomimetic nanoparticles loaded with antigen may represent an effective strategy to directly modulate adaptive immune responses in the respiratory tract. Depending on the design, virosomes may not only serve as biomimetic antigen carriers but are also endowed with intrinsic immune-stimulatory properties. We designed fluorescently labeled influenza-derived virosomes and liposome controls coupled to the model antigen ovalbumin to investigate uptake, phenotype changes, and antigen processing by antigen-presenting cells exposed to such particles in different respiratory tract compartments. Both virosomes and liposomes were captured by pulmonary macrophages and dendritic cells alike and induced activation in particle-bearing cells by upregulation of costimulatory markers such as CD40, CD80, CD86, PD-L1, PD-L2, and ICOS-L. Though antigen processing and accumulation of both coupled and soluble antigen was similar between virosomes and liposomes, only ovalbumin-coupled virosomes generated a strong antigen-specific CD4+ T cell proliferation. Pulmonary administrated antigen-coupled virosomes therefore effectively induced adaptive immune responses and may be utilized in novel preventive or therapeutic approaches in the respiratory tract.
Collapse
Affiliation(s)
- Rebecca A M Blom
- Department of Pulmonary Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Clinical Research, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | | | | | - Christian Moser
- Swiss Federal Institute of Intellectual Property, Bern, Switzerland
| | - Philip A Stumbles
- School of Veterinary and Life Sciences, Medical and Molecular Sciences, Murdoch University, Perth, WA, Australia.,Telethon Kids Institute, Perth, WA, Australia
| | - Fabian Blank
- Department of Pulmonary Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Christophe von Garnier
- Department of Pulmonary Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Clinical Research, University of Bern, Bern, Switzerland
| |
Collapse
|
14
|
Hales BJ, Hizawa N, Jenmalm M, Sverremark-Ekström E, Wardlaw AJ. Developments in the field of allergy in 2014 through the eyes of Clinical and Experimental Allergy. Clin Exp Allergy 2016; 45:1723-45. [PMID: 26492197 DOI: 10.1111/cea.12663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pathogenesis of asthma continues to be a major topic of interest to our authors with reviews and original papers on the role of viruses, mechanisms of inflammation, biomarkers, and phenotypes of asthma being major topics. A number of papers described new treatments for asthma focusing on blocking the Th2 response reflecting the fact that two decades of work in this area is finally bearing fruit. The pathogenesis of chronic rhinosinusitis is a growing area of interest, but there has been less on the genetics of airways disease than in previous years possibly reflecting the degree of rigour (and therefore a smaller body of work), with which these sorts of studies are now being undertaken. There continues to be a wide range of papers dealing with mechanisms of allergic disease ranging from clinical-based studies to basic research and the use of in vivo animal models especially mice. As before, mechanisms and new approaches to immunotherapy are common themes. Several were published in the allergens section investigating modification of allergens to increase their effectiveness and reduce the risk of adverse events. Risk factors for allergic disease was a common theme in the epidemiology section and food allergy a common theme in clinical allergy with papers on the development of protocols to induce tolerance and attempts to find biomarkers to distinguish sensitization from allergic disease. This was another exciting year for the editors, and we hope the readers of the journal.
Collapse
Affiliation(s)
- B J Hales
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
| | - N Hizawa
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - M Jenmalm
- Unit of Autoimmunity and Immune Regulation, Division of Clinical Immunology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - E Sverremark-Ekström
- M.C., Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - A J Wardlaw
- Department of Infection Immunity and Inflammation, Institute for Lung Health, University of Leicester, Leicester, UK.,Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| |
Collapse
|
15
|
Gorelik M, Frischmeyer-Guerrerio PA. Innate and adaptive dendritic cell responses to immunotherapy. Curr Opin Allergy Clin Immunol 2016; 15:575-80. [PMID: 26509662 DOI: 10.1097/aci.0000000000000213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
PURPOSE OF REVIEW In allergic disease, dendritic cells play a critical role in orchestrating immune responses to innate stimuli and promoting the formation of T helper 2 (TH2) effector versus T-regulatory cells. Here, we review recent advances in our understanding of how current forms of immunotherapy modulate dendritic cell responses. (Figure is included in full-text article.) RECENT FINDINGS Sublingual immunotherapy (SLIT) and oral immunotherapy (OIT) for peanut allergy alter the expression of costimulatory molecules on dendritic cells, which leads to reduced expression of TH2 effector cytokines in an antigen-nonspecific manner. SLIT and OIT also modulate dendritic cell innate immune responses to Toll-like receptor agonists, including enhanced production of interferon α and reduced expression of proinflammatory cytokines that may serve to promote the development of tolerance. Dendritic cells isolated from patients post-OIT promoted hypomethylation of the FOXP3 locus in effector T cells. Reduced methylation of the FOXP3 locus has been associated with more persistent clinical desensitization following OIT. Recent studies have additionally highlighted a role for B cells in inducing tolerogenic dendritic cell populations and T-regulatory cells during immunotherapy. Epicutaneous immunotherapy may also elicit immunosuppressive populations of cutaneous dendritic cells, although in some cases, antigen exposure through the skin can lead to sensitization. Finally, efforts have focused on identifying pharmacologic and/or antigen-independent strategies of altering dendritic cell function to enhance the immunosuppressive effects of immunotherapy. SUMMARY Dendritic cells are a critical target of immunotherapy. Alterations in both adaptive and innate immunity likely underlie the immunosuppressive effects of this treatment.
Collapse
Affiliation(s)
- Mark Gorelik
- aDepartment of Pediatrics, Division of Allergy and Immunology, Johns Hopkins University School of Medicine, Baltimore bLaboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | | |
Collapse
|
16
|
Cao PP, Shi LL, Xu K, Yao Y, Liu Z. Dendritic cells in inflammatory sinonasal diseases. Clin Exp Allergy 2016; 46:894-906. [PMID: 27159777 DOI: 10.1111/cea.12755] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Dendritic cells (DCs) are critical in linking the innate and adaptive immune responses, which have been implicated in the pathogenesis of many immune and inflammatory diseases as well as the development of tumours. The role of DCs in the pathophysiology of lung diseases has been widely studied. However, the phenotype, subset and function of DCs in upper airways under physiological or pathological conditions remain largely undefined. Allergic rhinitis (AR) and chronic rhinosinusitis (CRS) are two important upper airway diseases with a high worldwide prevalence. Aberrant innate and adaptive immune responses have been considered to play an important role in the pathogenesis of AR and CRS. To this end, understanding the function of DCs in shaping the immune responses in sinonasal mucosa is critical in exploring the pathogenic mechanisms underlying AR and CRS as well as in developing novel therapeutic strategies. This review summarizes the phenotype, subset, function and regulation of DCs in sinonasal mucosa, particularly in the setting of AR and CRS. Furthermore, this review discusses the perspectives for future research and potential clinical utility focusing on DC pathways in the context of AR and CRS.
Collapse
Affiliation(s)
- P-P Cao
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - L-L Shi
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - K Xu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Yao
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Z Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
17
|
Hu X, Wu J, An J, Hu Y, Shen Y, Liu C, Zhang X. Development of a novel monoclonal antibody to human inducible co-stimulator ligand (ICOSL): Biological characteristics and application for enzyme-linked immunosorbent assay. Int Immunopharmacol 2016; 36:151-157. [PMID: 27138044 DOI: 10.1016/j.intimp.2016.04.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 04/12/2016] [Accepted: 04/13/2016] [Indexed: 12/28/2022]
Abstract
ICOSL (B7-H2, CD275), a co-stimulatory molecule of the B7 superfamily, functions as a positive signal in immune response. To investigate whether ICOSL could be released into sera and the possible biological function of soluble ICOS (sICOSL), we generated and characterized a functional anti-human ICOSL monoclonal antibody (mAb), 20B10, and developed a novel enzyme-linked immunosorbent assay (ELISA) based on two anti-human ICOSL antibodies with different epitope specificities. Using the ELISA system, we found that sICOSL in the serum of healthy donors increases in an age-dependent manner and that the matrix metalloproteinase inhibitor (MMPI) could suppress sICOSL production. Together, these data demonstrate that the existence of circulating sICOSL in human serum might play an important role in immunoregulation.
Collapse
Affiliation(s)
- Xiaohan Hu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Jian Wu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Jingnan An
- Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Yumin Hu
- Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Yu Shen
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Cuiping Liu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China.
| | - Xueguang Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; Department of Immunology, Medical College of Soochow University, Suzhou 215006, China.
| |
Collapse
|
18
|
Shen C, Detry B, Lecocq M, Pilette C. A novel IgA/Delta-like 4/Notch axis induces immunosuppressive activity in human dendritic cells. Clin Immunol 2016; 168:37-46. [PMID: 27117596 DOI: 10.1016/j.clim.2016.04.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 04/20/2016] [Accepted: 04/22/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Chong Shen
- Université catholique de Louvain (UCL), Institut de Recherche Expérimentale & Clinique (IREC), Pôle Pneumologie, ORL & dermatologie; Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Cliniques universitaires St-Luc, Brussels, Belgium
| | - Bruno Detry
- Université catholique de Louvain (UCL), Institut de Recherche Expérimentale & Clinique (IREC), Pôle Pneumologie, ORL & dermatologie; Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Cliniques universitaires St-Luc, Brussels, Belgium
| | - Marylène Lecocq
- Université catholique de Louvain (UCL), Institut de Recherche Expérimentale & Clinique (IREC), Pôle Pneumologie, ORL & dermatologie; Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Cliniques universitaires St-Luc, Brussels, Belgium
| | - Charles Pilette
- Université catholique de Louvain (UCL), Institut de Recherche Expérimentale & Clinique (IREC), Pôle Pneumologie, ORL & dermatologie; Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Cliniques universitaires St-Luc, Brussels, Belgium.
| |
Collapse
|
19
|
Froidure A, Shen C, Pilette C. Dendritic cells revisited in human allergic rhinitis and asthma. Allergy 2016; 71:137-48. [PMID: 26427032 DOI: 10.1111/all.12770] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2015] [Indexed: 12/27/2022]
Abstract
The role of dendritic cells (DCs) in airway allergy has been studied for 15 years; recent data has highlighted the cross talk with airway epithelial cells and environmental factors (allergens, virus) during the inception and exacerbation of allergic asthma. Although murine models have provided key information, it remains uncertain to what extent these basic mechanisms take place in human allergic disease, notably with regard to different clinical phenotypes. In the present review, we discuss new evidence regarding mechanisms of DC regulation in the mouse which could be important in human asthma. Finally, after discussing the effects of current therapies on DC biology, we focus on pathways that could represent targets for future therapies.
Collapse
Affiliation(s)
- A. Froidure
- Institut de Recherche Expérimentale et Clinique; Université Catholique de Louvain and Walloon Institute for Excellence in Lifesciences and Biotechnology; Brussels Belgium
- Cliniques Universitaires Saint-Luc, service de pneumologie; Brussels Belgium
| | - C. Shen
- Institut de Recherche Expérimentale et Clinique; Université Catholique de Louvain and Walloon Institute for Excellence in Lifesciences and Biotechnology; Brussels Belgium
| | - C. Pilette
- Institut de Recherche Expérimentale et Clinique; Université Catholique de Louvain and Walloon Institute for Excellence in Lifesciences and Biotechnology; Brussels Belgium
- Cliniques Universitaires Saint-Luc, service de pneumologie; Brussels Belgium
| |
Collapse
|
20
|
Min X, Feng M, Guan Y, Man S, Fu Y, Cheng X, Tachibana H. Evaluation of the C-Terminal Fragment of Entamoeba histolytica Gal/GalNAc Lectin Intermediate Subunit as a Vaccine Candidate against Amebic Liver Abscess. PLoS Negl Trop Dis 2016; 10:e0004419. [PMID: 26824828 PMCID: PMC4732598 DOI: 10.1371/journal.pntd.0004419] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 01/11/2016] [Indexed: 12/29/2022] Open
Abstract
Background Entamoeba histolytica is an intestinal protozoan parasite that causes amoebiasis, including amebic dysentery and liver abscesses. E. histolytica invades host tissues by adhering onto cells and phagocytosing them depending on the adaptation and expression of pathogenic factors, including Gal/GalNAc lectin. We have previously reported that E. histolytica possesses multiple CXXC sequence motifs, with the intermediate subunit of Gal/GalNAc lectin (i.e., Igl) as a key factor affecting the amoeba's pathogenicity. The present work showed the effect of immunization with recombinant Igl on amebic liver abscess formation and the corresponding immunological properties. Methodology/Principal Findings A prokaryotic expression system was used to prepare the full-length Igl and the N-terminal, middle, and C-terminal fragments (C-Igl) of Igl. Vaccine efficacy was assessed by challenging hamsters with an intrahepatic injection of E. histolytica trophozoites. Hamsters intramuscularly immunized with full-length Igl and C-Igl were found to be 92% and 96% immune to liver abscess formation, respectively. Immune-response evaluation revealed that C-Igl can generate significant humoral immune responses, with high levels of antibodies in sera from immunized hamsters inhibiting 80% of trophozoites adherence to mammalian cells and inducing 80% more complement-mediated lysis of trophozoites compared with the control. C-Igl was further assessed for its cellular response by cytokine-gene qPCR analysis. The productions of IL-4 (8.4-fold) and IL-10 (2-fold) in the spleen cells of immunized hamsters were enhanced after in vitro stimulation. IL-4 expression was also supported by increased programmed cell death 1 ligand 1 gene. Conclusions/Significance Immunobiochemical characterization strongly suggests the potential of recombinant Igl, especially the C-terminal fragment, as a vaccine candidate against amoebiasis. Moreover, protection through Th2-cell participation enabled effective humoral immunity against amebic liver abscesses. Amebiasis, a neglected tropical disease caused by the protozoan parasite Entamoeba histolytica, is the second leading cause of death from protozoan diseases. Vaccination is considered as an effective strategy against amebiasis; however, clinical vaccines have yet to be developed. We previously reported that the intermediate subunit of Gal/GalNAc lectin (Igl) of E. histolytica is a key factor related to the adherence and cytotoxicity of this parasite to host cells. This study focused on the immune efficacy and immunological characterization of recombinant Igl and its fragments. Highly effective protection was observed in the hamsters immunized intramuscularly with the C-terminal fragment of Igl (C-Igl). C-Igl was further assessed to determine the immunological basis of protection. The immunized hamsters generated high levels of specific antibodies; these hamsters also showed an enhanced complementary-mediated lysis. The spleen cells from the immunized hamsters produced the cytokines IL-4, IL-10, and programmed cell death 1 ligand 1 after these cells were stimulated by C-Igl in vitro. These results demonstrate that recombinant Igl, particularly the C-terminal fragment, is a candidate vaccine for amebiasis. Nevertheless, further studies on Igl should be conducted to explore the preliminary steps of the development of vaccines for human amebiasis.
Collapse
Affiliation(s)
- Xiangyang Min
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Meng Feng
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Yue Guan
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Suqin Man
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yongfeng Fu
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Xunjia Cheng
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Kanagawa, Japan
- * E-mail: (XC); (HT)
| | - Hiroshi Tachibana
- Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Kanagawa, Japan
- * E-mail: (XC); (HT)
| |
Collapse
|
21
|
Hu X, Liu C, An J, Shen Y, Hu Y, Jiang J, Wu J, Zhang X. Development of a Novel Functional Monoclonal Antibody to Human CD275: Characterization and Biological Activity. Monoclon Antib Immunodiagn Immunother 2016; 35:18-24. [PMID: 26788906 DOI: 10.1089/mab.2015.0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CD275 (B7-H2, ICOSL), a co-stimulatory molecule of the B7 superfamily, plays a critical role in immune response. In this report, a novel mouse anti-human CD275 monoclonal antibody (MAb) was prepared using hybridoma technology, and immunological characteristics of the MAb were determined. The results showed that the MAb (clone 13D11) was IgG2(κ) and bound specifically to human CD275. By mutual competition, we found that the antibody recognized different epitopes of CD275 antigen compared with commercial antibodies and could block ICOS-CD275 interaction. Crosslinking of CD275 with MAb 13D11 markedly blocked ICOS positive signal and inhibited T cell proliferation and cytokine production. In addition, the 13D11 MAb was suitable for indirect ELISA detection. Thus, the MAb against human CD275 with high specificity and different activity would be useful for further study of this molecule.
Collapse
Affiliation(s)
- Xiaohan Hu
- 1 Jiangsu Province Key Laboratory of Stem Cell Research, Soochow University , Suzhou, China
| | - Cuiping Liu
- 2 Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University , Suzhou, China
| | - Jingnan An
- 1 Jiangsu Province Key Laboratory of Stem Cell Research, Soochow University , Suzhou, China
| | - Yu Shen
- 2 Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University , Suzhou, China
| | - Yumin Hu
- 1 Jiangsu Province Key Laboratory of Stem Cell Research, Soochow University , Suzhou, China
| | - Juean Jiang
- 2 Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University , Suzhou, China
| | - Jian Wu
- 2 Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University , Suzhou, China
| | - Xueguang Zhang
- 1 Jiangsu Province Key Laboratory of Stem Cell Research, Soochow University , Suzhou, China .,2 Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University , Suzhou, China
| |
Collapse
|
22
|
Froidure A, Vandenplas O, D'Alpaos V, Evrard G, Pilette C. Persistence of asthma following allergen avoidance is associated with proTh2 myeloid dendritic cell activation. Thorax 2015; 70:967-73. [PMID: 26103997 DOI: 10.1136/thoraxjnl-2014-206364] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 06/05/2015] [Indexed: 11/04/2022]
Abstract
BACKGROUND The natural history of asthma includes in some patients periods of disease remission, but the underlying mechanisms are unknown. OBJECTIVES We explored whether type 1 myeloid dendritic cell (mDC) dysfunction could be involved in the persistence of asthma, studying the controlled setting of occupational asthma after allergen avoidance. METHODS We recruited 32 patients with occupational asthma to flour or latex ascertained by specific inhalation challenge and who were no longer exposed to the causal allergen. Leukapheresis was performed in each patient to isolate and characterise blood type 1 mDCs, and their functionality was studied in coculture with allogeneic CD4(+) T cells from controls. RESULTS At follow-up, 11/32 patients (34%) were characterised by the absence of symptoms and non-specific bronchial hyper-responsiveness to histamine and were considered to be cured. When compared with cured patients, mDCs from patients with persistent disease increased the production of interleukin (IL) 5 and IL-13 by CD4(+) T cells, and upregulated programmed death ligand 2 (PD-L2) upon allergen pulsing. In addition, IL-5 and IL-13 responses could be reversed by exogenous IL-12, as well as by PD-L2 blockade. CONCLUSIONS This study indicates that pro-Th2 features of mDCs correlate with disease activity in asthma after cessation of exposure to the causal allergen. The findings also highlight that the Th2 programming by dendritic cells is flexible and partly mediated by PD-L2.
Collapse
Affiliation(s)
- Antoine Froidure
- Institut de Recherche Expérimentale et Clinique, Pôle de Pneumologie, Université catholique de Louvain, Brussels, Belgium Walloon Institute for Excellence in Lifesciences and Biotechnology (WELBIO), Brussels, Belgium Department of Chest Medicine, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Olivier Vandenplas
- Institut de Recherche Expérimentale et Clinique, Pôle de Pneumologie, Université catholique de Louvain, Brussels, Belgium Walloon Institute for Excellence in Lifesciences and Biotechnology (WELBIO), Brussels, Belgium Department of Chest Medicine, Centre Hospitalier Universitaire de Mont-Godinne, Université catholique de Louvain, Yvoir, Belgium
| | - Vinciane D'Alpaos
- Department of Chest Medicine, Centre Hospitalier Universitaire de Mont-Godinne, Université catholique de Louvain, Yvoir, Belgium
| | - Geneviève Evrard
- Department of Chest Medicine, Centre Hospitalier Universitaire de Mont-Godinne, Université catholique de Louvain, Yvoir, Belgium
| | - Charles Pilette
- Institut de Recherche Expérimentale et Clinique, Pôle de Pneumologie, Université catholique de Louvain, Brussels, Belgium Walloon Institute for Excellence in Lifesciences and Biotechnology (WELBIO), Brussels, Belgium Department of Chest Medicine, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| |
Collapse
|
23
|
Froidure A, Pilette C. [Human dendritic cells in allergic asthma and rhinitis]. Med Sci (Paris) 2015; 31:151-8. [PMID: 25744261 DOI: 10.1051/medsci/20153102011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The role of dendritic cells (DC) in the pathogenesis of allergic asthma and rhinitis has been highlighted for 15 years. In this review, we summarize key findings concerning DC function in airway allergy and focus on studies performed in human. DC coming from allergic patients have specific characteristics, including significant expression of high affinity receptor for IgE as well as a propensity for Th2 responses induction following priming with allergen and/or epithelial cytokines. Mechanistic data concerning this DC dysfunction in asthma also provide perspectives for innovating therapies.
Collapse
Affiliation(s)
- Antoine Froidure
- Institut de recherche expérimentale et clinique, Université catholique de Louvain, Walloon institute for excellence in lifesciences and biotechnology (WELBIO), avenue Hippocrate 54, boîte 1.54.04, 1200 Bruxelles, Belgique
| | - Charles Pilette
- Institut de recherche expérimentale et clinique, Université catholique de Louvain, Walloon institute for excellence in lifesciences and biotechnology (WELBIO), avenue Hippocrate 54, boîte 1.54.04, 1200 Bruxelles, Belgique - Cliniques universitaires Saint-Luc, service de pneumologie, Bruxelles, Belgique
| |
Collapse
|