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Li Z, Tian J, Yang F. Tyrosine nitration enhances the allergenic potential of house dust mite allergen Der p 2. ENVIRONMENTAL RESEARCH 2024; 252:118826. [PMID: 38579999 DOI: 10.1016/j.envres.2024.118826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/07/2024]
Abstract
Nitration of allergenic proteins caused by atmospheric pollutants O3 and NO2 may enhance their allergenic potential. In the study, the influence of nitration was investigated on the allergenicity of Der p 2, which is a main allergen from house dust mites and plays an important role in allergenic rhinitis and asthma. The results reveal that nitrated Der p 2 enhanced the IgE-binding capacity, upregulated the mRNA expression and release of IL-6 and IL-8 from bronchial epithelial cells, and induced higher levels of specific-IgE, TH2 cytokines and white blood cells in mice. Besides, nitrated Der p 2 caused more severe oxidative stress and allergenic symptoms in mice. It is concluded that nitration enhanced the allergenicity of Der p 2 through not only directly inducing higher amount of specific-IgE and stronger responses of TH2 cytokines, but also indirectly aggravating allergic symptoms by oxidative stress and adjuvant-like activation airway epithelial cells. The study suggests that the contribution of nitration to the promotion in allergenicity should not be ignored when precisely assessing the risk of house dust mite allergens in real environment.
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Affiliation(s)
- Zhiqi Li
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Natural Resources and Environmental Science, Zhejiang University, 310058, Hangzhou, China
| | - Jingyi Tian
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Natural Resources and Environmental Science, Zhejiang University, 310058, Hangzhou, China
| | - Fangxing Yang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Natural Resources and Environmental Science, Zhejiang University, 310058, Hangzhou, China; Innovation Center of Yangtze River Delta, Zhejiang University, 314100, Jiashan, China.
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2
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Rudokas V, Silimavicius L, Kucinskaite-Kodze I, Sliziene A, Pleckaityte M, Zvirbliene A. Novel monoclonal antibodies against house dust mite allergen Der p 21 and their application to analyze allergen extracts. PeerJ 2024; 12:e17233. [PMID: 38646484 PMCID: PMC11032652 DOI: 10.7717/peerj.17233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/22/2024] [Indexed: 04/23/2024] Open
Abstract
Background Allergen extracts and recombinant allergens are used in allergy diagnostics and immunotherapy. Since allergen extracts from different manufacturers lack proper standardization regarding their composition, monoclonal antibodies (MAbs) against specific allergen components can be used for their identification and quantification in allergen extracts. This study aimed to generate MAbs against allergen Der p 21 of Dermatophagoides pteronyssinus for the analysis of allergen extracts. Methods Recombinant Der p 21 was expressed in E. coli and purified using affinity chromatography. MAbs against Der p 21 were generated using hybridoma technology. House dust mite (HDM) allergen extracts were analyzed using the newly developed sandwich enzyme-linked immunosorbent assay, Western blotting and microarray immunoassay. Results MAbs raised against recombinant Der p 21 were characterized in detail and proven to be reactive with natural Der p 21. Highly specific sandwich enzyme-linked immunosorbent assay for the quantification of Der p 21 was developed and optimized. The allergen was detected and its concentration was determined in only three of six analyzed HDM allergen extracts from different manufacturers. Conclusion HDM analysis by MAb-based immunoassays shows their differences in allergen composition. The results demonstrate the importance of allergen-specific MAbs as a tool for the characterization of allergen extracts and the need for their appropriate standardization before their use for allergy diagnostics or immunotherapy.
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Affiliation(s)
- Vytautas Rudokas
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Laimis Silimavicius
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
- UAB Imunodiagnostika, Vilnius, Lithuania
| | | | - Aiste Sliziene
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Milda Pleckaityte
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Aurelija Zvirbliene
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
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Keumatio Doungtsop BC, Nardini E, Kalay H, Versteeg SA, Lübbers J, van Barneveld G, Li ER, van Vliet SJ, van Ree R, de Jong EC, van Kooyk Y. Sialic acid-modified der p 2 allergen exerts immunomodulatory effects on human PBMCs. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. GLOBAL 2024; 3:100193. [PMID: 38187864 PMCID: PMC10770723 DOI: 10.1016/j.jacig.2023.100193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 09/28/2023] [Accepted: 10/13/2023] [Indexed: 01/09/2024]
Abstract
Background House dust mite extract-based allergen immunotherapy (AIT) to treat house dust mite allergy is substantially effective but still presents some safety and efficacy concerns that warrant improvement. Several major allergen-based approaches to increase safety and efficacy of AIT have been proposed. One of them is the use of the group 2 allergen, Der p 2. Objective We sought to investigate the immunomodulatory effects of sialic acid-modified major allergen recombinant Der p 2 (sia-rDer p 2) on PBMCs from healthy volunteers. Methods We activated PBMCs with anti-CD3/CD28 antibodies and incubated them at 37°C for 6 days in the presence or absence of either native rDer p 2 or α2-3 sialic acid-modified rDer p 2 (sia-rDer p 2). We assessed the changes in CD4+ T-cell activation and proliferation by flow cytometry and changes in T-lymphocyte cytokine production in cell culture supernatant by ELISA. Results We observed that PBMCs treated with sia-rDer p 2 presented with a markedly decreased expression of CD69 and an increased abundance of LAG-3+ lymphocytes compared with cells treated with rDer p 2. Moreover, PBMCs treated with sia-rDer p 2 showed a reduced production of IL-4, IL-13, and IL-5 and displayed a higher IL-10/IL-5 ratio compared with rDer p 2-treated PBMCs. Conclusions We demonstrate that sia-rDer p 2 might be a safer option than native rDer p 2 for Der p 2-specific AIT. This is most relevant in the early phase of AIT that is often characterized by heightened TH2 responses, because sia-rDer p 2 does not enhance the production of TH2 cytokines.
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Affiliation(s)
- Brigitte-Carole Keumatio Doungtsop
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Eleonora Nardini
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Hakan Kalay
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Serge A. Versteeg
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Joyce Lübbers
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Gaby van Barneveld
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Eveline R.J. Li
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- DC4U Technologies, Abcoude, The Netherlands
| | - Sandra J. van Vliet
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
| | - Ronald van Ree
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- Department of Experimental Immunology, Amsterdam UMC location Amsterdam Medical Center, Amsterdam, The Netherlands
| | - Esther C. de Jong
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- Department of Experimental Immunology, Amsterdam UMC location Amsterdam Medical Center, Amsterdam, The Netherlands
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Inflammatory Diseases Research Program, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- DC4U Technologies, Abcoude, The Netherlands
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Liang G, Zhou J, Jiang L, Wang W, Wu Q, Gao C, Liu W, Li S, Feng S, Song Z. Higher House Dust Mite-Specific IgE Levels among Chronic Spontaneous Urticaria Patients May Implicate Higher Basophil Reactivity. Int Arch Allergy Immunol 2023; 184:1126-1134. [PMID: 37604140 DOI: 10.1159/000531966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/05/2023] [Indexed: 08/23/2023] Open
Abstract
INTRODUCTION Allergen-specific IgE (sIgE) sensitization exists in a considerable fraction of chronic spontaneous urticaria (CSU) patients. Basophils have been implicated in the pathogenesis of CSU. This paper aimed to explore the relationship between allergic sensitization and basophil reactivity in CSU and the possible underlying mechanism. METHODS Basophil-enriched leukocytes were isolated from the peripheral blood of 76 CSU patients and 9 healthy controls. Basophil CD63 and FcεRIα (the alpha subunit of the high-affinity IgE receptor) expression in the blood samples with various house dust mite (HDM)-sIgE levels were determined by flow cytometry. Basophil reactivity and SHIP-1 (a molecule related to the IgE/FcεRI signaling pathway) expression were analyzed after stimulation with an HDM allergen or other stimuli. RESULTS HDM-sIgEstrong positive (≥3.5 kU/L) CSU patients had a significantly higher mean percentage of basophil CD63 and higher baseline levels of FcεRIα expressed by basophils than HDM-sIgEnormal (<0.35 kU/L) CSU patients and healthy controls; the same went for total serum IgE. After stimulation with Dermatophagoides pteronyssinus peptidase 1 (Derp1) alone or together with Derp1-sIgE, the stimulation index of CD63 and levels of FcεRIα expressed by basophils in HDM-sIgEstrong positive CSU patients were significantly higher than those in HDM-sIgEnormal CSU patients and healthy controls. Significantly more SHIP-1 mRNA expression in HDM-sIgEstrong positive CSU patients was induced after the combined stimulation in comparison to other subjects. CONCLUSION CSU patients with higher HDM-sIgE levels (≥3.5 kU/L) may have higher CD63 and FcεRIα expression on peripheral blood basophils. Peripheral blood basophils in these CSU patients are more responsive to HDM allergen stimulation. Higher HDM-sIgE levels among CSU patients may implicate higher basophil reactivity.
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Affiliation(s)
- Gaopeng Liang
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China,
| | - Jie Zhou
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Lanlan Jiang
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Wenwen Wang
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Qijun Wu
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Cuie Gao
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Wenying Liu
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Shifei Li
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Shujing Feng
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Zhiqiang Song
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, China
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Mohan N, Srivastava S, Prasad R, Kumar A. Early Atopic Sensitization to House-Dust Mite in Children with Recurrent Wheeze-A Cross-Sectional Study. Indian J Pediatr 2023; 90:766-769. [PMID: 35771349 DOI: 10.1007/s12098-022-04215-y] [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: 06/17/2021] [Accepted: 03/02/2022] [Indexed: 11/05/2022]
Abstract
OBJECTIVES To determine sensitization to house-dust mite (HDM) antigen in under-five children with recurrent wheeze, compare it with nonwheezers, and assess atopic comorbidities in them. METHODS A cross-sectional study was done in the Pediatric department of a teaching hospital in North India, in 190 children aged 1-5 y. Out of these, 127 had recurrent wheeze (RW), and 63 had no wheeze (NW). Sensitivity was done by skin prick test (SPT) for two dust mites antigens: Dermatophagoide farinae and Dermatophagoide pteronyssinus antigens. In addition, atopic comorbidities like atopic dermatitis and allergic rhinitis were assessed. RESULTS Mean age of the study population was 34.52 ± 20.50 mo. SPT positivity for either of the dust mites was 97 (76.4%) in RW and 13 (20.6%) in NW which was significant (p < 0.001, aOR = 12.27). HDM species sensitization for D. pteronyssinus was 55.1% vs. 15.9% (p < 0.001 aOR = 7.81) and D. farinae was 39.4% vs. 9.5% (p < 0.001, aOR = 5.45) in groups, respectively. Mean wheal size in RW Group was also significantly higher than NW group for D. pteronyssinus (2.39 ± 1.44 vs. 0.52 ± 1.19 mm, median (IQR) 3 (1-3), p < 0.001), D. farinae (1.80 ± 1.39 vs. 0.32 ± 1.00 mm, median (IQR) 2 (0-3), p < 0.001). Allergic rhinitis was present in 55 (43.3%) vs. 7 (11.1%) (p < 0.001), atopic dermatitis in 28 (22%) vs. 2 (3.2%) (p = 0.001) in group 1 and 2, respectively. All children with allergic rhinitis had HDM sensitization in both groups. CONCLUSION This study showed early sensitization to HDM in children with recurrent wheeze. Atopic comorbidities were also present in them.
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Affiliation(s)
- Nitin Mohan
- Department of Pediatrics, Era's Lucknow Medical College, Lucknow, Uttar Pradesh, India
| | - Shetanshu Srivastava
- Department of Pediatrics, Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, 226010, India.
| | - Rajendra Prasad
- Department of Pulmonary Medicine, Era's Lucknow Medical College, Lucknow, Uttar Pradesh, India
| | - Archana Kumar
- Department of Pediatrics, Era's Lucknow Medical College, Lucknow, Uttar Pradesh, India
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Pei Y, Xiao Z, Wei S, Peng M, Luo C, Wang D. Studies on HBcAg-rBlo t 5-21 Fusion Protein Vaccine That Alleviates Blomia tropicalis Airway Inflammation. J Inflamm Res 2022; 15:6343-6355. [DOI: 10.2147/jir.s380526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 11/06/2022] [Indexed: 11/19/2022] Open
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Fel d1 Blocking Antibodies: A Novel Method to Reduce IgE-Mediated Allergy to Cats. J Immunol Res 2021; 2021:5545173. [PMID: 34250096 PMCID: PMC8238577 DOI: 10.1155/2021/5545173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/05/2021] [Indexed: 11/18/2022] Open
Abstract
Fel d1 is an important allergen produced by cats that causes IgE reactions in up to 95% of cat-allergic adults. Immunotherapy to reduce human allergy to cats has demonstrated that people have the capacity to produce allergen-specific neutralizing antibodies that block IgE-mediated allergic responses. We wished to determine if "blocking" antibodies could be used to reduce the IgE binding ability of cat allergens prior to their exposure to humans. Here, we describe the characterization of Fel d1-specific antibodies. We demonstrated the efficacy of a rabbit polyclonal and an allergen-specific chicken IgY to bind to Fel d1 in cat saliva and block Fel d1-IgE binding and IgE-mediated basophil degranulation. Fel d1 blocking antibodies offer a new and exciting approach to the neutralization of cat allergens.
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Hindley JP, Oliver MA, Thorpe C, Cullinane A, Wuenschmann S, Chapman MD. Bos d 11 in baked milk poses a risk for adverse reactions in milk-allergic patients. Clin Exp Allergy 2020; 51:132-140. [PMID: 33141480 DOI: 10.1111/cea.13774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/06/2020] [Accepted: 10/28/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Patients are commonly challenged with foods containing baked milk, for example muffins, yet little is known about the specific allergen content of muffins used in milk challenges or of the effect that baking has on allergenicity. OBJECTIVE Our objective was to compare the levels of major milk allergens in uncooked and baked muffins using monoclonal immunoassays and IgE antibody binding before and after baking. METHODS Uncooked and baked muffins were prepared using recipes from Mount Sinai and Imperial College. Allergen levels were compared by ELISA for Bos d 5 (β-lactoglobulin) and Bos d 11 (β-casein). IgE reactivity was assessed using sera from milk-sensitized donors in direct binding and inhibition ELISA. RESULTS Bos d 5 was reduced from 680 µg/g in uncooked muffin mix to 0.17 µg/g in baked muffins, representing a >99% decrease after baking. Conversely, Bos d 11 levels in baked muffin remained high and only decreased by 30% from a mean of 4249 µg/g in uncooked muffin mix to 2961 µg/g when baked (~181 mg Bos d 11 per muffin). Baked muffins retained ~70% of the IgE binding to uncooked muffin mix. Baked muffin extract inhibited IgE binding to uncooked muffin mix by up to 80%, demonstrating retention of in vitro IgE reactivity. CONCLUSIONS AND CLINICAL RELEVANCE High levels of Bos d 11 in baked muffins pose a risk for adverse reactions, especially in patients who have high anti-casein IgE antibodies.
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Affiliation(s)
| | | | - Cathy Thorpe
- Indoor Biotechnologies Inc, Charlottesville, VA, USA
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Clinical significance of dust mite allergens. Mol Biol Rep 2020; 47:6239-6246. [DOI: 10.1007/s11033-020-05613-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 06/20/2020] [Indexed: 12/22/2022]
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Chen D, Fu Q, Lin J, Hu C, Huang N, Chang KX, Sun B, Liu Z. Gene synthesizing, expression and immunogenicity characterization of recombinant translation elongation factor 2 from Dermatophagoides farinae. Mol Med Rep 2019; 20:5324-5334. [PMID: 31702815 PMCID: PMC6854542 DOI: 10.3892/mmr.2019.10786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 09/04/2019] [Indexed: 11/06/2022] Open
Abstract
House dust mite (HDM) hypersensitivity increasingly affects millions of individuals worldwide. Although numerous major allergens produced by HDM species have been characterized, some of the less potent allergens remain to be studied. The present study aimed to obtain the recombinant allergen of Translation Elongation Factor 2 (TEF 2) from the HDM Dermatophagoides farinae by synthesizing, and then expressing the recombinant TEF 2 to identify its immunogenicity. In the present study, the D. farinae TEF 2 (Der f TEF 2) was synthesized, expressed and purified. The molecular characteristics of Der f TEF 2 were analyzed using bioinformatics approaches. The recombinant protein was purified via affinity chromatography, and the allergenicity was assessed using immunoblotting, ELISAs and skin prick tests. The gene for TEF 2 consists of 2,535 bp and encodes an 844‑amino acid protein. A positive response to recombinant Der f TEF 2 was detected in 16.2% of 37 patients with HDM allergies using skin prick tests. In addition, the immunoblotting indicated that the protein showed a high ability to bind serum IgE from patients allergic to HDMs, and that the recombinant TEF 2 was highly immunogenic. Bioinformatics analysis predicted 17 peptides as B cell epitopes (amino acids 29‑35, 55‑64, 92‑99, 173‑200, 259‑272, 311‑318, 360‑365, 388‑395, 422‑428, 496‑502, 512‑518, 567‑572, 580‑586, 602‑617, 785‑790, 811‑817 and 827‑836) and 14 peptides as T cell epitopes (amino acids 1‑15, 65‑79, 120‑134, 144‑159, 236‑250, 275‑289, 404‑418, 426‑440, 463‑477, 510‑524, 644‑658, 684‑698, 716‑730 and 816‑830). The software DNAStar predicted the secondary structure of TEF 2, and showed that 27 α‑helices and five β‑sheets were found in the protein. In conclusion, the present study cloned and expressed the Der f TEF 2 gene, and the recombinant protein exhibited immunogenicity, providing a theoretical bases, and references, for the diagnosis and treatment of allergic disease.
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Affiliation(s)
- Desheng Chen
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Qinghui Fu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Jianli Lin
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Chengshen Hu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Nana Huang
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Ke Xin Chang
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
| | - Baoqing Sun
- Department of Allergy, Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital Group, Shenzhen, Guangdong 518000, P.R. China
| | - Zhigang Liu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, Guangdong 518060, P.R. China
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Tan W, Zheng JH, Duong TMN, Koh YI, Lee SE, Rhee JH. A Fusion Protein of Derp2 Allergen and Flagellin Suppresses Experimental Allergic Asthma. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2019; 11:254-266. [PMID: 30661317 PMCID: PMC6340794 DOI: 10.4168/aair.2019.11.2.254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/05/2018] [Accepted: 07/08/2018] [Indexed: 12/19/2022]
Abstract
Purpose The house dust mite (HDM) is one of the most important sources of indoor allergens and a significant cause of allergic rhinitis and allergic asthma. Our previous studies demonstrated that Vibrio vulnificus flagellin B (FlaB) plus allergen as a co-treatment mixture improved lung function and inhibited eosinophilic airway inflammation through the Toll-like receptor 5 signaling pathway in an ovalbumin (OVA)- or HDM-induced mouse asthma model. In the present study, we fused the major mite allergen Derp2 to FlaB and compared the therapeutic effects of the Derp2-FlaB fusion protein with those of a mixture of Derp2 and FlaB in a Derp2-induced mouse asthma model. Methods BALB/c mice sensitized with Derp2 + HDM were treated with Derp2, a Derp2 plus FlaB (Derp2 + FlaB) mixture, or the Derp2-FlaB fusion protein 3 times at 1-week intervals. Seven days after the final treatment, the mice were challenged intranasally with Derp2, and airway responses and Derp2-specific immune responses were evaluated. Results The Derp2-FlaB fusion protein was significantly more efficacious in reducing airway hyperresponsiveness, lung eosinophil infiltration, and Derp2-specific IgE than the Derp2 + FlaB mixture. Conclusions The Derp2-FlaB fusion protein showed a strong anti-asthma immunomodulatory capacity, leading to the prevention of airway inflammatory responses in a murine disease model through the inhibition of Th2 responses. These findings suggest that the Derp2-FlaB fusion protein would be a promising vaccine candidate for HDM-mediated allergic asthma therapy.
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Affiliation(s)
- Wenzhi Tan
- Clinical Vaccine R&D Center and Department of Microbiology, Chonnam National University Medical School, Gwangju, Korea
| | - Jin Hai Zheng
- Laboratory of In Vivo Molecular imaging, Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, Korea
| | - Tra My Nu Duong
- Clinical Vaccine R&D Center and Department of Microbiology, Chonnam National University Medical School, Gwangju, Korea
| | - Young Il Koh
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Shee Eun Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea.
| | - Joon Haeng Rhee
- Clinical Vaccine R&D Center and Department of Microbiology, Chonnam National University Medical School, Gwangju, Korea
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IgE and T-cell responses to house dust mite allergen components. Mol Immunol 2018; 100:120-125. [DOI: 10.1016/j.molimm.2018.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/19/2018] [Indexed: 01/10/2023]
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Abstract
House dust mite (HDM) is a predominant source of indoor aeroallergen worldwide, which induces allergic diseases including allergic rhinoconjunctivitis, allergic asthma, atopic eczema and other allergic skin diseases. Allergen specific immunotherapy (AIT) is the only potential disease-modifying treatment of HDM allergic subjects. However, AIT remains underused due to no universally accepted allergen standardization and a shortage of rigorous clinical studies to confirm safety and efficacy. With the effort of doctors and researchers in allergy field, efficacy, safety, standardization and strategy of AIT are being continuously developed. This review presents the updated research based on recently published trials and meta-analyses.
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Affiliation(s)
- Lin Yang
- a Department of Allergy , Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology , Wuhan , China
| | - Rongfei Zhu
- a Department of Allergy , Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology , Wuhan , China
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Identification of a novel cofilin-related molecule (Der f 31) as an allergen from Dermatophagoides farinae. Immunobiology 2017; 223:246-251. [PMID: 29102047 DOI: 10.1016/j.imbio.2017.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 09/19/2017] [Accepted: 10/03/2017] [Indexed: 01/11/2023]
Abstract
House dust mite (HDM) allergen is a major cause of allergic disease. In this study, two-dimensional immunoblot and Matrix-Assisted Laser Desorption Ionization tandem Time-of-flight mass spectrometry (MALDI-TOF-MS) were used to identify Der f 31. After Der f 31 was cloned, expressed and purified, skin prick test (SPT), Immune inhibitory assays, Western blot, ELISA and asthmatic mouse model were employed to examine the allergenicity of recombinant Der f 31. The gene of Der f 31 includes 447 bps, and encoded 148 amino acids. Positive responses of SPT to r-Der f 31 were 32.5% in 43 HDM-allergic patients. r-Der f 31 can induce allergic pulmonary inflammation in the mouse model. In conclusion, Der f 31 is a novel subtype of dust mite allergens.
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Bordas-Le Floch V, Le Mignon M, Bussières L, Jain K, Martelet A, Baron-Bodo V, Nony E, Mascarell L, Moingeon P. A combined transcriptome and proteome analysis extends the allergome of house dust mite Dermatophagoides species. PLoS One 2017; 12:e0185830. [PMID: 28982170 PMCID: PMC5628879 DOI: 10.1371/journal.pone.0185830] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/20/2017] [Indexed: 02/07/2023] Open
Abstract
Background House dust mites (HDMs) such as Dermatophagoides farinae and D. pteronyssinus represent major causes of perennial allergy. HDM proteomes are currently poorly characterized, with information mostly restricted to allergens. As of today, 33 distinct allergen groups have been identified for these 2 mite species, with groups 1 and 2 established as major allergens. Given the multiplicity of IgE-reactive mite proteins, potential additional allergens have likely been overlooked. Objective To perform a comprehensive characterization of the transcriptomes, proteomes and allergomes of D. farinae and D. pteronyssinus in order to identify novel allergens. Methods Transcriptomes were analyzed by RNA sequencing and de novo assembly. Comprehensive mass spectrometry-based analyses proteomes were combined with two-dimensional IgE reactivity profiling. Results Transcripts from D. farinae and D. pteronyssinus were assembled, translated into protein sequences and used to populate derived sequence databases in order to inform immunoproteomic analyses. A total of 527 and 157 proteins were identified by bottom-up MS analyses in aqueous extracts from purified HDM bodies and fecal pellets, respectively. Based on high sequence similarities (>71% identity), we also identified 2 partial and 11 complete putative sequences of currently undisclosed D. pteronyssinus counterparts of D. farinae registered allergens. Immunoprofiling on 2D-gels revealed the presence of unknown 23 kDa IgE reactive proteins in both species. Following expression of non-glycosylated recombinant forms of these molecules, we confirm that these new allergens react with serum IgEs from 42% (8/19) of HDM-allergic individuals. Conclusions Using combined transcriptome and immunoproteome approaches, we provide a comprehensive characterization of D. farinae and D. pteronyssinus allergomes. We expanded the known allergen repertoire for D. pteronyssinus and identified two novel HDM allergens, now officially referred by the International Union of Immunological Societies (IUIS) Nomenclature Subcommittee as Der f 36 and Der p 36.
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Conti A, Burastero GJ, Suli C, Banerjee S, Vrtala S, Alessio M, Burastero SE. Identification by serological proteome analysis of paramyosin as prominent allergen in dust mite allergy. J Proteomics 2017; 166:19-26. [DOI: 10.1016/j.jprot.2017.06.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/20/2017] [Accepted: 06/30/2017] [Indexed: 11/15/2022]
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Thomas WR. House Dust Mite Allergens: New Discoveries and Relevance to the Allergic Patient. Curr Allergy Asthma Rep 2017; 16:69. [PMID: 27600386 DOI: 10.1007/s11882-016-0649-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE OF REVIEW Recent findings on house dust allergens and their contribution to knowledge that will significantly impact on current and future allergy treatments are appraised. RECENT FINDINGS Quantitation of IgE binding to a spectrum of allergen components in several independent studies in varying locations has largely affirmed the main components as the groups 1 and 2 and possibly 23 allergens with mid-tier contributions from the groups 4, 5, 7, and 21. Prevalent binding to Der p 23 has been recapitulated sometimes with low titers. The IgE of non-asthmatic atopic subjects binds at lower titer and to fewer components than that of asthmatics, and their IgG binding relative to IgE is higher especially for children hospitalized for exacerbation. The higher IgG ratios were associated with increased IL-10 a cytokine more readily induced from T cells of allergic subjects. Peptides representing the groups 1 and 2 allergens can be used to stimulate ex vivo T cells showing responses correlating with IgE binding and providing a valuable tool for ascertaining the contribution of IgE and T cells to disease. Also, the induction of Th2 and follicular helper T cells are shown to make different contributions in mice. Cross-reactivity of IgE binding assays with high-titer cross-reactive antibodies induced by scabies is a problem in the many areas of the world where scabies is highly prevalent and endemic and from recent increases in immigration. In the last few years, allergen research has produced results that warrant rapid translation into diagnostic tools and the formulation of allergen components for immunotherapy.
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Affiliation(s)
- Wayne R Thomas
- Telethon Kids Institute, University of Western Australia, 100 Roberts Road, Subiaco, Western Australia, 6008, Australia.
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Zhao Y, Zhang Q, Meng Q, Wu F, Zhang L, Tang Y, Guan Y, An L. Quantum dots-based lateral flow immunoassay combined with image analysis for semiquantitative detection of IgE antibody to mite. Int J Nanomedicine 2017; 12:4805-4812. [PMID: 28740386 PMCID: PMC5503493 DOI: 10.2147/ijn.s134539] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Semiquantitative and rapid detection of specific IgE (sIgE) with well clinical relevance to house dust mite (HDM) are promising for prevalence rhinitis and asthma patients due to the increasing air pollution. However, the conventional IgE measurement systems are time-consuming, complicated and require special instruments. Herein, we overcome the above limitations of sIgE to HDM detection system by developing a quantum dot nanobeads-based lateral flow immunoassay and an image analysis procedure. The proposed detection system could semiquantitatively measure the IgE in a linear range of 0.2–10 U/mL. Moreover, there is a well correlation between the developed detection system and the clinical symptoms by a comparison study using 56 positive patients’ sera and 40 healthy control sera. The proposed detection system is simple, robust and easy-to-use and promising for in home test.
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Affiliation(s)
- Yan Zhao
- Department of Allergy, The First Affiliated Hospital, Harbin Medical University, Harbin
| | - Qiang Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, The Affiliated Yantai Yuhuangding Hospital, Qingdao University, Yantai
| | - Qingfeng Meng
- Department of Ophthalmology, The First Affiliated Hospital, Harbin Medical University, Harbin
| | - Fenglian Wu
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Qinhuangdao, Qinhuangdao, People's Republic of China
| | - Lihua Zhang
- Department of Allergy, The First Affiliated Hospital, Harbin Medical University, Harbin
| | - Yao Tang
- Department of Allergy, The First Affiliated Hospital, Harbin Medical University, Harbin
| | - Yuanyuan Guan
- Department of Allergy, The First Affiliated Hospital, Harbin Medical University, Harbin
| | - Lixin An
- Department of Allergy, The First Affiliated Hospital, Harbin Medical University, Harbin
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Patel PS, Kearney JF. CD36 and Platelet-Activating Factor Receptor Promote House Dust Mite Allergy Development. THE JOURNAL OF IMMUNOLOGY 2017; 199:1184-1195. [PMID: 28667161 DOI: 10.4049/jimmunol.1700034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 06/07/2017] [Indexed: 12/21/2022]
Abstract
Over 89% of asthmatic children in underdeveloped countries demonstrate sensitivity to house dust mites (HDMs). The allergic response to HDMs is partially mediated by epithelial cell-derived cytokines that activate group 2 innate lymphoid cells, induce migration and activation of dendritic cells, and promote effector differentiation of HDM-specific TH2 cells. However, the contribution of innate receptor engagement on epithelial or dendritic cells by HDMs that ultimately mediates said innate and adaptive allergic responses is poorly understood. We and other investigators have demonstrated that HDMs express phosphorylcholine (PC) moieties. The major PC receptors involved in immune responses include CD36 and platelet-activating factor receptor (PAFR). Because CD36 and PAFR are expressed by epithelial cells and dendritic cells, and expression of these receptors is higher in human asthmatics, we determined whether engagement of CD36 or PAFR on epithelial or dendritic cells contributes to HDM allergy development. Testing bone marrow chimeric mice revealed that CD36 engagement on radioresistant cells and PAFR engagement on radioresistant and radiosensitive cells in the lung promote allergic responses to HDMs. Additionally, passive anti-PC IgM Abs administered intratracheally with HDMs decreased allergen uptake by epithelial cells and APCs in the lungs of C57BL/6 mice but not CD36-/- or PAFR-/- mice. These results show that CD36 and PAFR are important mediators of HDM allergy development and that inhibiting HDM engagement with PC receptors in the lung protects against allergic airway disease.
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Affiliation(s)
- Preeyam S Patel
- Department of Microbiology, The University of Alabama at Birmingham, Birmingham, AL 35294
| | - John F Kearney
- Department of Microbiology, The University of Alabama at Birmingham, Birmingham, AL 35294
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Mueller GA, Randall TA, Glesner J, Pedersen LC, Perera L, Edwards LL, DeRose EF, Chapman MD, London RE, Pomés A. Serological, genomic and structural analyses of the major mite allergen Der p 23. Clin Exp Allergy 2016; 46:365-76. [PMID: 26602749 DOI: 10.1111/cea.12680] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 10/28/2015] [Accepted: 11/12/2015] [Indexed: 01/11/2023]
Abstract
BACKGROUND Der p 23 was recently identified in a European population as a major allergen and potentially a chitin binding protein. OBJECTIVE This study sought to assess the importance of Der p 23 among other Dermatophagoides allergens in a North American population and to determine the structure for functional characterization. METHODS IgE binding to Der p 23, Der p 1, Der p 2, Der p 5, Der p 7 and Der p 8 was measured by ELISA. RNA-seq data from D. pteronyssinus were compared as estimates of allergen expression levels. The structure was analysed by X-ray crystallography and NMR. RESULTS Despite a high prevalence of Der p 23, (75% vs. 87% and 79% for Der p 1 and Der p 2, respectively), the anti-Der p 23 IgE levels were relatively low. The patient response to the 6 allergens tested was variable (n = 47), but on average anti-Der p 1 and anti-Der p 2 together accounted for 85% of the specific IgE. In terms of abundance, the RNA expression level of Der p 23 is the lowest of the major allergens, thirty fold less than Der p 1 and sevenfold less than Der p 2. The structure of Der p 23 is a small, globular protein stabilized by two disulphide bonds, which is structurally related to allergens such as Blo t 12 that contain carbohydrate binding domains that bind chitin. Functional assays failed to confirm chitin binding by Der p 23. CONCLUSIONS AND CLINICAL RELEVANCE Der p 23 accounts for a small percentage of the IgE response to mite allergens, which is dominated by Der p 1 and Der p 2. The prevalence and amount of specific IgE to Der p 23 and Der p 2 are disproportionately high compared to the expression of other Dermatophagoides allergens.
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Affiliation(s)
- G A Mueller
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - T A Randall
- Integrative Bioinformatics, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - J Glesner
- INDOOR Biotechnologies, Inc., Charlottesville, VA, USA
| | - L C Pedersen
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - L Perera
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - L L Edwards
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - E F DeRose
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - M D Chapman
- INDOOR Biotechnologies, Inc., Charlottesville, VA, USA
| | - R E London
- Genome Integrity and Structural Biology Laboratory, Research Triangle Park, NC, USA
| | - A Pomés
- INDOOR Biotechnologies, Inc., Charlottesville, VA, USA
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Yang X, Fan G, Li J. Diagnostic value of Der p 1 and Der p 2 specific IgE in Dermatophagoides pteronyssinus IgE sensitization. Ann Allergy Asthma Immunol 2016; 116:295-301. [PMID: 27055990 DOI: 10.1016/j.anai.2016.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 02/06/2016] [Accepted: 02/15/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To assess the diagnostic performance of Der p 1 and Der p 2 specific IgE (sIgE). DATA SOURCES Studies were systematic computerized searches of the PubMed, EMBASE, and Cochrane libraries (published 1966 to September 5, 2015). STUDY SELECTION Records were screened by title and abstract and then by full-text articles of relevant studies. Eligible studies were selected according to inclusion criteria: (1) all house dust mite allergy diagnosed on the basis of clinical symptoms in combination with a dust mite extract skin prick test result; (2) the inclusion of controls in the study; and (3) enough data to construct the diagnostic 2 × 2 table. True-positive, false-positive, false-negative, and true-negative values were extracted from or calculated for each study. Then the pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio were calculated. A summary receiver operating characteristic curve and area under the curve were used to evaluate the overall diagnostic performance. RESULTS Seven eligible studies that involved 1040 cases were included in this meta-analysis. The meta-analysis found that detection of Der p 1 or Der p 2 sIgE is of sufficient diagnostic accuracy for use in the diagnosis of Dermatophagoides pteronyssinus IgE sensitization. CONCLUSION Detection of Der p 1 or Der p 2 sIgE is a promising diagnostic tool in the diagnosis of D pteronyssinus IgE sensitization.
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Affiliation(s)
- Xin Yang
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China; Yantai Yuhuangding Hospital, Yantai, Shandong Province, People's Republic of China
| | - Gaowei Fan
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jinming Li
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.
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Becker S, Schlederer T, Kramer MF, Haack M, Vrtala S, Resch Y, Lupinek C, Valenta R, Gröger M. Real-Life Study for the Diagnosis of House Dust Mite Allergy - The Value of Recombinant Allergen-Based IgE Serology. Int Arch Allergy Immunol 2016; 170:132-7. [DOI: 10.1159/000447694] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 06/15/2016] [Indexed: 11/19/2022] Open
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23
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Lin JL, Wang YY, Xiao XJ, Wu YL, Sun BQ, Gao AJ, Liu ZG, Li J, Yang PC, Liu XY. Characterization of a new subtype of allergen in dermatophagoides farinae-Der f 28. J Thorac Dis 2015; 7:1842-9. [PMID: 26623108 DOI: 10.3978/j.issn.2072-1439.2015.10.43] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND House dust mites (HDMs) are the major sources of indoor allergens which induce asthma, dermatitis, rhinitis, and some other allergic diseases. Close to 30 sub-allergens have been identified. METHODS Through analyzing the full genome sequence of dust mite, a new allergen whose primary structure belongs to the heat shock protein family was identified. The sequence of this allergen was determined by cDNA cloning. The allergenicity was assayed by skin prick test, Western-blot and enzyme-linked immunosorbent assay (ELISA). RESULTS r-Der f 28 bound to serum IgE from mite allergic patients. Positive responses to r-Der f 28 were shown in 11.5% by skin prick testing from 26 DM-allergic patients. Airway hyperresponsiveness, serum specific IgE and IL-4 were significantly increased in allergic asthma mouse model sensitized to r-Der f 28. CONCLUSIONS Der f 28 is a new subtype of allergen in dermatophagoides farinae.
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Affiliation(s)
- Jian-Li Lin
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Yuan-Yuan Wang
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Xiao-Jun Xiao
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Yu-Lan Wu
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Bao-Qing Sun
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - An-Jian Gao
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Zhi-Gang Liu
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Jing Li
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Ping-Chang Yang
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
| | - Xiao-Yu Liu
- 1 State Key Laboratory of Respiratory Disease for Allergy, School of Medicine, Shenzhen University, Shenzhen 518060,, China ; 2 State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China
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Thomas WR. Hierarchy and molecular properties of house dust mite allergens. Allergol Int 2015; 64:304-11. [PMID: 26433526 DOI: 10.1016/j.alit.2015.05.004] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 05/05/2015] [Accepted: 05/07/2015] [Indexed: 01/01/2023] Open
Abstract
The allergenic load of house dust mite allergy is largely constituted by a few proteins with a hierarchical pattern of allergenicity. The serodominant specificities are the group 1&2 and the group 23 faecal allergens. The collective IgE binding to the group 1&2 allergens can measure unequivocal HDM sensitisation better than HDM extracts although discrepancies have been found in regions with complex acarofauna suggesting a need to investigate the specificity with allergen components. The group 4, 5, 7&21 allergens that each induce responses in about 40% of subjects are mid-tier allergens accounting for most of the remaining IgE binding. Their titres are proportional to the concomitant responses to Der p1&2. Group 2 allergen variants have different antibody binding. Body proteins only occasionally induce sensitisation although a higher prevalence of binding by atopic dermatitis patients provides a new avenue of research. A broad spectrum of IgE binding has been associated with diverse symptoms but not with the severity of asthma which is associated with low IgG antibody. Some allergens such as the group 14 large lipid binding proteins and the recently described proteins Der f 24-33, need further investigation but with the cognoscence that other denominated allergens have been found to be minor sensitisers by comparative quantitative analyses. Scabies is a confounder for diagnosis with extracts, inducing cross-reactive antibodies with Der p 4&20 as is seafood allergy with cross reactivity to Der p 10 a minor HDM allergen. The HDM genome sequence can now be used to verify allelic and paralogous variations.
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Salem AK. A promising CpG adjuvant-loaded nanoparticle-based vaccine for treatment of dust mite allergies. Immunotherapy 2015; 6:1161-3. [PMID: 25496331 DOI: 10.2217/imt.14.97] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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Kim HS, Kang SH, Won S, Lee EK, Chun YH, Yoon JS, Kim HH, Kim JT. Immunoglobulin E to allergen components of house dust mite in Korean children with allergic disease. Asia Pac Allergy 2015; 5:156-62. [PMID: 26240792 PMCID: PMC4521164 DOI: 10.5415/apallergy.2015.5.3.156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/27/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND House dust mites (HDMs) are important sources of indoor allergens. Seventeen components have been identified from Dermatophagoides pteronyssinus (Der p). OBJECTIVE Our aim was to define the prevalence of specific IgE to components of Der p in Korea and investigate the clinical features of them in children with allergic disease. METHODS We performed a prospective evaluation of 80 HDM sensitized patients with history of allergic rhinitis (AR), atopic dermatitis (AD), asthma and urticaria (UC). Patients underwent ImmunoCAP for total IgE, Der p, Der f, Der p 1, Der p 2, and Der p 10. RESULTS Seventy-nine patients had detectable serum IgE to Der p, 80 patients were sensitized to Der f, 66 patients were sensitized to Der p 1, 63 patients to Der p 2, and 7 patients were sensitized to Der p 10. Der p 1 specific IgE was significantly lower in the UC group compared with the AD and AR group. Total IgE was significantly higher in the Der p 10 sensitized group. Der p 10 serum IgE level was highly correlated with crab and shrimp specific IgE. There was a significant positive correlation between total IgE and specific IgE to Der p and its components and Der f. CONCLUSION Sensitization to HDM and its components in Korea is similar to previous studies from temperate climate. The determination of Der p 1, Der p 2, and Der p 10 specific IgE helps in obtaining additional information in regards to allergic disease.
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Affiliation(s)
- Hwan Soo Kim
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Sung Hee Kang
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Sulmui Won
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Eu Kyoung Lee
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Yoon Hong Chun
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Jong-Seo Yoon
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Hyun Hee Kim
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
| | - Jin Tack Kim
- Department of Pediatrics, The Catholic University of Korea College of Medicine, Seoul 137-701, Korea
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Patel PS, Kearney JF. Neonatal exposure to pneumococcal phosphorylcholine modulates the development of house dust mite allergy during adult life. THE JOURNAL OF IMMUNOLOGY 2015; 194:5838-50. [PMID: 25957171 DOI: 10.4049/jimmunol.1500251] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/15/2015] [Indexed: 01/16/2023]
Abstract
Currently, ∼20% of the global population suffers from an allergic disorder. Allergies and asthma occur at higher rates in developed and industrialized countries. It is clear that many human atopic diseases are initiated neonatally and herald more severe IgE-mediated disorders, including allergic asthma, which is driven by the priming of Th2 effector T cells. The hygiene hypothesis attempts to link the increased excessively sanitary conditions early in life to a default Th2 response and increasing allergic phenomena. Despite the substantial involvement of IgE Abs in such conditions, little attention has been paid to the effects of early microbial exposure on the B cell repertoire prior to the initiation of these diseases. In this study, we use Ab-binding assays to demonstrate that Streptococcus pneumoniae and house dust mite (HDM) bear similar phosphorylcholine (PC) epitopes. Neonatal C57BL/6 mice immunized with a PC-bearing pneumococcal vaccine expressed increased frequencies of PC-specific B cells in the lungs following sensitizing exposure to HDM as adults. Anti-PC IgM Abs in the lung decreased the interaction of HDM with pulmonary APCs and were affiliated with lowered allergy-associated cell infiltration into the lung, IgE production, development of airway hyperresponsiveness, and Th2 T cell priming. Thus, exposure of neonatal mice to PC-bearing pneumococci significantly reduced the development of HDM-induced allergic disease during adult life. Our findings demonstrate that B cells generated against conserved epitopes expressed by bacteria, encountered early in life, are also protective against the development of allergic disease during adult life.
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Affiliation(s)
- Preeyam S Patel
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - John F Kearney
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
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Liao EC, Chang CY, Wu CC, Wang GJ, Tsai JJ. Association of Single Nucleotide Polymorphisms in the MD-2 Gene Promoter Region With Der p 2 Allergy. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2015; 7:249-55. [PMID: 25749780 PMCID: PMC4397365 DOI: 10.4168/aair.2015.7.3.249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/31/2014] [Accepted: 11/10/2014] [Indexed: 12/31/2022]
Abstract
Purpose Sensitization to house dust mite (Dermatophagoides pteronyssinus) is a considerable risk factor for the progression of allergic disease. The group 2 allergen from Dermatophagoides pteronyssinus, Der p 2, is considered a major one in patients with specific immunoglobulin E (IgE) to Der p 2. Der p 2 has structural homology with myeloid differentiation 2 (MD-2), which is involved in the lipopolysaccharide-binding component of the Toll-like receptor 4 signaling pathway and the development of inflammation. The aim of this study was to examine the genetic association of single nucleotide polymorphisms (SNPs) in the promoter region of MD-2 with Der p 2-sensitive allergy. Methods We investigated associations between cohort's characteristics, including 280 allergic and 80 healthy subjects by examining total IgE, eosinophils, D. pteronyssinus-specific IgE, Der p 2-specific IgE, the number of IgE-producing B cells induced by Der p 2, and the odds ratio of allergic symptoms. Results Based on the 1,000 genome project data, the minor allele frequencies of the rs1809441 and rs1809442 are 0.467 and 0.474, respectively. However, the correlation of linkage disequilibrium (LD) between these 2 SNPs is D'=1, the genotype frequencies of the 2 MD-2 (LY96) SNPs (rs1809441 and rs1809442) that are located nearby were significantly different between allergic and health subjects: the TT genotype of rs1809441 and the GG genotype of rs1809442 were more frequent in allergic subjects than in healthy subjects (16.1% vs 2.5% in both genotypes). The allergic patients with these genotypes exhibited significantly higher levels of D. pteronyssinus-specific IgE and Der p 2-specific Ig E, and a larger number of Der p 2-activated B cells. In addition, these 2 SNPs in the MD-2 promoter region were significantly associated with the prevalence of nasal, skin, and asthmatic allergic symptoms. Conclusions Our results indicated that 2 SNPs in the MD-2 promoter region were significantly associated with Der p 2-specific Ig E, and thereby suggest that these SNPs may play a major role in susceptibility to Der p 2-triggered immune responses in a Taiwanese population.
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Affiliation(s)
- En Chih Liao
- Center for Translational Medicine, Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan.; Department of BioIndustry Technology, Da Yeh University, Changhua, Taiwan.; Department of Medical Technology, Jen-Ten College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Ching Yun Chang
- Division of Allergy, Immunology & Rheumatology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chia Che Wu
- Department of Mechanical Engineering, National Chung-Hsing University, Taichung, Taiwan
| | - Gou Jen Wang
- Graduate Institute of Biomedical Engineering, National Chung-Hsing University, Taichung, Taiwan
| | - Jaw Ji Tsai
- Division of Allergy, Immunology & Rheumatology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.; College of Life Sciences, National Chung-Hsing University, Taichung, Taiwan.; Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan.
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Fonseca DM, Wowk PF, Paula MO, Gembre AF, Baruffi MD, Fermino ML, Turato WM, Campos LW, Silva CL, Ramos SG, Horn C, Marchal G, Arruda LK, Russo M, Bonato VLD. Requirement of MyD88 and Fas pathways for the efficacy of allergen-free immunotherapy. Allergy 2015; 70:275-84. [PMID: 25477068 DOI: 10.1111/all.12555] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND We have shown that mycobacterial antigens and CpG oligodeoxynucleotides downmodulate airway allergic inflammation by mechanisms dependent on T-cell activation. Here, we investigated the participation of the innate response, particularly the role of MyD88 adaptor, and Fas molecules in the effectiveness of DNA-HSP65 or CpG/culture filtrated proteins (CFP) immunotherapy. METHODS Mice sensitized and challenged with Der p 1 allergen were treated with DNA-HSP65, CpG/CFP, or with adoptively transferred cells from immunized mice. The treatment efficacy was assessed by evaluating eosinophil recruitment, antibody, and cytokine production. RESULTS In addition to downregulating the Th2 response, DNA-HSP65 and CpG/CFP promoted IL-10 and IFN-γ production. Adoptive transfer of cells from mice immunized with DNA-HSP65 or CpG/CFP to allergic recipients downmodulated the allergic response. Notably, transfer of cells from DNA-HSP65- or CpG/CFP-immunized MyD88(-/-) mice failed to reduce allergy. Additionally, for effective reduction of allergy by cells from CpG/CFP-immunized mice, Fas molecules were required. Although DNA-HSP65 or CpG/CFP immunization stimulated antigen-specific production of IFN-γ and IL-10, the effect of DNA-HSP65 was associated with IL-10 while CpG/CFP was associated with IFN-γ. Moreover, after stimulation with mycobacterial antigens plus Der p 1 allergen, cells from mite-allergic patients with asthma exhibited similar patterns of cytokine production as those found in the lung of treated mice. CONCLUSIONS This study provides new insights on the mechanisms of allergen-free immunotherapy by showing that both DNA-HSP65 and CpG/CFP downregulated house dust mite-induced allergic airway inflammation via distinct pathways that involve not only induction of mycobacterial-specific adaptive responses but also signaling via MyD88 and Fas molecules.
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Affiliation(s)
- D. M. Fonseca
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - P. F. Wowk
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
- Carlos Chagas Institute; Oswaldo Cruz Foundation; Curitiba Brazil
| | - M. O. Paula
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - A. F. Gembre
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - M. D. Baruffi
- Department of Clinical Analyses, Toxicology and Food Sciences; Faculty of Pharmaceutical Sciences of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - M. L. Fermino
- Department of Clinical Analyses, Toxicology and Food Sciences; Faculty of Pharmaceutical Sciences of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - W. M. Turato
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - L. W. Campos
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - C. L. Silva
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - S. G. Ramos
- Department of Pathology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - C. Horn
- Laboratory of Immunology and Immunogenetics; Evandro Chagas Clinical Research Institute; Oswaldo Cruz Foundation; Rio de Janeiro Brazil
| | - G. Marchal
- Immunotherapix Bio Top; Institute Pasteur; Paris France
| | - L. K. Arruda
- Department of Medicine; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
| | - M. Russo
- Department of Immunology; Institute of Biomedical Sciences; University of São Paulo; São Paulo Brazil
| | - V. L. D. Bonato
- Department of Biochemistry and Immunology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
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Yu SJ, Liao EC, Tsai JJ. House dust mite allergy: environment evaluation and disease prevention. Asia Pac Allergy 2014; 4:241-52. [PMID: 25379484 PMCID: PMC4215436 DOI: 10.5415/apallergy.2014.4.4.241] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 10/14/2014] [Indexed: 02/05/2023] Open
Abstract
There are two groups of dust mites, house dust mites (HDMs) and storage mites (SMs), that have been identified in the household environment. Both could induce airway inflammation through activation of innate and adaptive immunity and lead to asthma. In order to monitor environmental dust mite infestation, different methods can be used to detect their presence, such as the use of floating methods, monoclonal antibodies, and nanostructured biosensor. SM could be identified in the storage room, mainly in contaminated food such as mushrooms and corn starch. In HDM-sensitive subjects and mice that were challenged with HDM or SM after sensitization, these mites could up-regulate IgE levels, T helper 2 associated cytokine production and airway hypersensitivity. Different age groups of subjects were sensitized by different species of mites. More subjects above 70 years were sensitized by SM and more subjects below the age of 40 years were sensitized to HDM. Different allergenic components of dust mite extracts, such as Der p 1, Der p 2, could activate innate immunity through activating pattern recognition receptor (PRR) and then lead to allergic inflammation. The best modality to treat HDM allergy is immunomodulation through Treg cells and IgA production. In the recent years, many studies indicated probiotics could increase IgA secretion and the number of Treg cells. However, some studies conducted in adults have contradictory effects in reducing allergic symptoms. Therefore, probiotics confer inconclusive benefits on the allergic symptoms.
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Affiliation(s)
- Sheng-Jie Yu
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung 40705, Taiwan. ; Section of Immunology and Rheumatology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan
| | - En-Chih Liao
- Center for Translational Medicine, Department of Medical Research, Taichung Veterans General Hospital, Taichung 40705, Taiwan. ; Department of BioIndustry Technology, Da Yeh University, Changhua 51591, Taiwan. ; Department of Medical Technology, Jen Ten College of Medicine, Nursing and Management, Miaoli 35664, Taiwan
| | - Jaw-Ji Tsai
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung 40705, Taiwan. ; Section of Immunology and Rheumatology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan. ; Institute of Clinical Medicine, National Yang Ming University, Taipei 11221, Taiwan
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Joshi VB, Adamcakova-Dodd A, Jing X, Wongrakpanich A, Gibson-Corley KN, Thorne PS, Salem AK. Development of a poly (lactic-co-glycolic acid) particle vaccine to protect against house dust mite induced allergy. AAPS JOURNAL 2014; 16:975-85. [PMID: 24981892 DOI: 10.1208/s12248-014-9624-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 05/19/2014] [Indexed: 11/30/2022]
Abstract
Poly(lactic-co-glycolic acid) (PLGA) particles carrying antigen and adjuvant is a promising vaccine system which has been shown to stimulate systemic antigen-specific immune responses. In this study, we investigated the relationship of (i) the sizes of PLGA particle and (ii) the presence of cytosine-phosphate-guanine motifs (CpG), with the extent and type of immune response stimulated against Dermatophagoides pteronyssinus-2 (Der p2) antigen. Different sizes of PLGA particles encapsulating CpG were prepared using a double emulsion solvent evaporation method. Mice were vaccinated with Der p2 and different sizes of empty or CpG-loaded PLGA particles. Vaccinated mice were exposed to daily intranasal instillation of Der p2 for 10 days followed by euthanization to estimate leukocyte accumulation in bronchoalveolar lavage (BAL) fluids, antibody profiles, and airway hyperresponsiveness. PLGA particles showed a size-dependent decrease in the proportion of eosinophils found in BAL fluids. Mice vaccinated with the Der p2 coated on 9-μm-sized empty PLGA particles showed increased levels of IgE and IgG1 antibodies as well as increased airway hyperresponsiveness. All sizes of PLGA particles encapsulating CpG prevented airway hyperresponsiveness after Der p2 exposures. Inflammatory responses to Der p2 exposure were significantly reduced when smaller PLGA particles were used for vaccination. In addition, encapsulating CpG in PLGA particles increased IgG2a secretion. This study shows that the size of PLGA particles used for vaccination plays a major role in the prevention of house dust mite-induced allergy and that incorporation of CpG into the PLGA particles preferentially develops a Th1-type immune response.
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Affiliation(s)
- Vijaya B Joshi
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa, 52242, USA
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Vrtala S, Huber H, Thomas WR. Recombinant house dust mite allergens. Methods 2014; 66:67-74. [PMID: 23911838 PMCID: PMC4582397 DOI: 10.1016/j.ymeth.2013.07.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 07/12/2013] [Accepted: 07/15/2013] [Indexed: 01/07/2023] Open
Abstract
House dust mites (HDM) are a globally important source of allergen responsible for the sensitization of more than 50% of allergic patients. Specific immunotherapy with HDM extracts is effective but allergen extracts cannot be fully standardized and severe side-effects can occur during the protracted course of treatment. The introduction of molecular biological techniques into allergy research allowed the indentification of more than 20 groups of HDM allergens. Recombinant HDM allergens can be produced in defined concentrations and consistent quality and allow the development of vaccines for HDM allergy with reduced allergenic activity and retained immunogenicity. The immunotherapy trials in pollen allergic patients with recombinant pollen allergens/hypoallergenic allergen derivatives have shown that this treatment is effective and indicated that recombinant HDM vaccines might improve immunotherapy of HDM allergic patients. Here we report the steps for the development of vaccines for HDM allergy. After selection of the most prevalent HDM species, the panel of allergens to be included into a therapeutic vaccine for HDM allergy needs to be determined. HDM allergens with high IgE-binding frequency and clinical relevance will be modified into hypoallergenic variants and evaluated for their allergenic activity and immunogenicity. Derivatives with reduced allergenic activity but with retained immunogenicity would be good candidates for a HDM vaccine for safe and efficient immunotherapy.
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Affiliation(s)
- Susanne Vrtala
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Hans Huber
- Biomay AG, Lazarettgasse 19. 1090 Vienna, Austria
| | - Wayne R Thomas
- Center for Child Health Research, University of Western Australia, Telethon Institute of Child Health Research, West Perth, Australia.
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Koid AE, Chapman MD, Hamilton RG, van Ree R, Versteeg SA, Dreskin SC, Koppelman SJ, Wünschmann S. Ara h 6 complements Ara h 2 as an important marker for IgE reactivity to peanut. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:206-13. [PMID: 24328145 PMCID: PMC4055559 DOI: 10.1021/jf4022509] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The similarities of two major peanut allergens, Ara h 2 and Ara h 6, in molecular size, amino acid sequence, and structure have made it difficult to obtain natural Ara h 6 free of Ara h 2. The objectives of this study were to purify natural Ara h 6 that is essentially free of Ara h 2 and to compare its IgE reactivity and potency in histamine release assays to Ara h 2. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the highly purified allergen (<0.01% Ara h 2) revealed a single 14.5 kD band, and the identity of Ara h 6 was confirmed by liquid chromatography-tandem mass spectrometry. Ara h 6 showed a higher seroprevalence in chimeric IgE enzyme-linked immunosorbent assay (n = 54) but a weaker biological activity in basophil histamine release assays than Ara h 2. Purified Ara h 6 will be useful for diagnostic IgE antibody assays as well as molecular and cellular studies to investigate the immunological mechanisms of peanut allergy.
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Affiliation(s)
- Audrey E Koid
- INDOOR Biotechnologies, Inc., 1216 Harris St, Charlottesville, VA 22903
| | - Martin D Chapman
- INDOOR Biotechnologies, Inc., 1216 Harris St, Charlottesville, VA 22903
| | - Robert G Hamilton
- Johns Hopkins University School of Medicine, 600 N Wolfe St #6-113, Baltimore, MD 21287
| | - Ronald van Ree
- Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam-Zuidoost, The Netherlands
| | - Serge A Versteeg
- Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam-Zuidoost, The Netherlands
| | - Stephen C Dreskin
- University of Colorado Denver, School of Medicine, 1250 14th St, Denver, CO 80202
| | | | - Sabina Wünschmann
- INDOOR Biotechnologies, Inc., 1216 Harris St, Charlottesville, VA 22903
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34
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An S, Shen C, Liu X, Chen L, Xu X, Rong M, Liu Z, Lai R. Alpha-actinin is a new type of house dust mite allergen. PLoS One 2013; 8:e81377. [PMID: 24324688 PMCID: PMC3855699 DOI: 10.1371/journal.pone.0081377] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 10/13/2013] [Indexed: 11/22/2022] Open
Abstract
Main indoor allergens for humans are from house dust mites. There are more than 30 allergens in Dermatophagoides farinae but only fourteen allergens have been identified from this mite including Der f 1–3, 6, 7, 10, 11, 13–18, and 22. A native allergen protein (Der f 24, 90 kDa) was purified from D. farinae by gel filtration and anionic exchange liquid chromatography combined with IgE immunodetection. Its primary structure was determined by Edman degradation, mass spectrometry analysis and cDNA cloning. Enzyme-linked immunosorbent assay inhibition tests (ELISA-IT), immunoblots, basophil activation test (BAT) and skin prick test (SPT) were performed to evaluate the allergenicity. It was identified as an alpha (α)-actinin containing a CaM-like domain with EF-hand motifs. Der f 24 reacted to sera from 85.4% (35/41) of patients on western blot analysis. It reduced ∼20% sera IgE reactivity to D. farinae extracts on a competitive ELISA. Eighty percent (8/10) of patients with D. farinae allergy showed positive reactions to Der f 24 in skin prick test. The expression of CD63 on basophils from patients was up-regulated by Der f 24 by ∼5.4-fold. Alpha-actinin was identified as a new type of house dust mite allergen. To the best of our knowledge, this is the first report of α-actinin as an allergen.
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Affiliation(s)
- Su An
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
- Graduate School of the Chinese Academy of Sciences, Beijing, China
| | - Chuanbing Shen
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
- Graduate School of the Chinese Academy of Sciences, Beijing, China
| | - Xiaoyu Liu
- Institute of Allergy and Immunology, Shenzhen University, Shenzhen, China
| | - Lingling Chen
- Clinical Laboratory, The First Affiliated Hospital of Kunming Medical College, Kunming, Yunnan, China
| | - Xuemei Xu
- Clinical Laboratory, The First Affiliated Hospital of Kunming Medical College, Kunming, Yunnan, China
| | - Mingqiang Rong
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
- * E-mail: (MR); (ZL); (RL)
| | - Zhigang Liu
- Institute of Allergy and Immunology, Shenzhen University, Shenzhen, China
- * E-mail: (MR); (ZL); (RL)
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
- * E-mail: (MR); (ZL); (RL)
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Hales BJ, Chai LY, Hazell L, Elliot CE, Stone S, O'Neil SE, Smith WA, Thomas WR. IgE and IgG binding patterns and T-cell recognition of Fel d 1 and non-Fel d 1 cat allergens. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2013; 1:656-65.e1-5. [PMID: 24565714 DOI: 10.1016/j.jaip.2013.08.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 08/01/2013] [Accepted: 08/13/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Cat allergy affects approximately 15% of the population and is a major risk factor for asthma. The relative importance of cat allergens other than Fel d 1 is not known. OBJECTIVE To compare IgE and IgG antibody binding and T-cell recognition of the major cat allergen Fel d 1 with other cat proteins with known IgE binding properties. METHODS IgE, IgG1, and IgG4 antibody to Fel d 1, 2, 3, 4, 7, 8, and the undesignated IgE binding proteins haptoglobin and S100A12 were measured in the plasma of 96 individuals with cat allergy and 78 individuals without cat allergy. Cytokines were measured from T cells stimulated with the cat allergens. RESULTS An allergen other than Fel d 1 had the highest IgE binding specificity for 35% of individuals with cat allergy, and it bound more than 50% of their IgE antibody in 70% of these sera. Fel d 4, 7, and 8 were identified as the main contributors to the non-Fel d 1 IgE binding response and elicited inflammatory Th2 cytokines to a similar degree as Fel d 1. As expected, the average percentage of IgE binding to Fel d 1 for individuals was 55%. IgG4 binding to Fel d 1 was detected in both subjects with allergy (30%) and subjects without allergy (19%). IgG4 binding to the other allergens was less prevalent but was found for both groups. IgG1 antibody was not detected to any of the newly described cat proteins. CONCLUSION Fel d 4, 7, and 8 are allergens that should be included in the diagnosis and investigation of cat allergy.
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Affiliation(s)
- Belinda J Hales
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia.
| | - Lee Ying Chai
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Lee Hazell
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Claire E Elliot
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Shane Stone
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Serena E O'Neil
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Wendy-Anne Smith
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
| | - Wayne R Thomas
- Telethon Institute for Child Health Research and Centre for Child Health Research, University of Western Australia, Subiaco Wa, Australia
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Kim KH, Jahan SA, Kabir E. A review on human health perspective of air pollution with respect to allergies and asthma. ENVIRONMENT INTERNATIONAL 2013; 59:41-52. [PMID: 23770580 DOI: 10.1016/j.envint.2013.05.007] [Citation(s) in RCA: 183] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 05/10/2013] [Accepted: 05/11/2013] [Indexed: 05/27/2023]
Abstract
The increase in cases of asthma and allergies has become an important health issue throughout the globe. Although these ailments were not common diseases a few short decades ago, they are now affecting a large part of the population in many regions. Exposure to environmental (both outdoor and indoor) pollutants may partially account for the prevalence of such diseases. In this review, we provide a multidisciplinary review based on the most up-to-date survey of literature regarding various types of airborne pollutants and their associations with asthma-allergies. The major pollutants in this respect include both chemical (nitrogen dioxide, ozone, sulfur dioxide, particulate matter, and volatile organic compounds) and biophysical parameters (dust mites, pet allergens, and mold). The analysis was extended further to describe the development of these afflictions in the human body and the subsequent impact on health. This publication is organized to offer an overview on the current state of research regarding the significance of air pollution and its linkage with allergy and asthma.
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Affiliation(s)
- Ki-Hyun Kim
- Department of Environment & Energy, Sejong University, Seoul 143-747, Republic of Korea.
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Abstract
Activation of receptors of the innate immune system is a critical step in the initiation of immune responses. It has been shown that dominant allergens have properties that could allow them to interact with toll-like and C-type lectin receptors to favour Th2-biased responses and many bind lipids and glycans that could associate with ligands to mimic pathogen-associated microbial patterns. In accord with the proposed allergen-specific innate interactions it has been shown that the immune responses to different allergens and antigens from the same source are not necessarily coordinately regulated.
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Affiliation(s)
- W R Thomas
- Centre for Child Health Research, University of Western Australia, Telethon Institute for Child Health Research, Subiaco, Western Australia, Australia.
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IgE reactivity profiles among house dust mite allergic patients in Bavaria. Eur Arch Otorhinolaryngol 2013; 270:3177-82. [DOI: 10.1007/s00405-013-2516-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 04/18/2013] [Indexed: 10/26/2022]
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Barbosa MCR, Santos ABR, Ferriani VPL, Pomés A, Chapman MD, Arruda LK. Efficacy of recombinant allergens for diagnosis of cockroach allergy in patients with asthma and/or rhinitis. Int Arch Allergy Immunol 2013; 161:213-9. [PMID: 23549028 DOI: 10.1159/000346318] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 12/05/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Immunoglobulin E (IgE) reactivity to individual allergens among cockroach-allergic patients has revealed wide variability. The aim of this study was to assess the effectiveness of recombinant cockroach allergens for skin testing, and to determine sensitization profiles among cockroach-allergic patients living in Brazil. METHODS Fifty-seven cockroach-allergic patients with asthma and/or rhinitis were recruited. Skin testing with recombinant (r) allergens from Periplaneta americana (rPer a 1 and rPer a 7) and Blattella germanica (rBla g 2, rBla g 4 and rBla g 5) were performed at 10 μg/ml and 5 μg/ml (rPer a 1). IgE antibodies to rPer a 7 and rPer a 1 were quantitated by ELISA. RESULTS Of 57 patients tested, 3 (5.3%), 24 (42.1%), 4 (7%), 3 (5.3%) and 4 (7%) showed positive reactions to rPer a 1, rPer a 7, rBla g 2, rBla g 4 and rBla g 5, respectively. Twenty-eight patients (49.1%) had positive tests to at least one allergen. In keeping with skin test results, 31/57 patients (54.4%) and 5/55 patients (9%) had detectable IgE to rPer a 7 and rPer a 1, respectively. Levels of IgE to rPer a 7 were higher in patients with positive tests to rPer a 7 than those with negative tests (geometric mean 13.2 and 1.8 IU/ml, p < 0.05). There was good concordance of results of skin tests and measurements of serum IgE to rPer a 7. CONCLUSION IgE reactivity to rPer a 7 (P. americana tropomyosin) was dominant among patients in Brazil. However, 50% of the patients did not present reactivity to any of the recombinant allergens tested.
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Affiliation(s)
- Michelle C R Barbosa
- Department of Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Filì L, Vultaggio A, Cardilicchia E, Manuelli C, Casini A, Nencini F, Maggi L, Pratesi S, Petroni G, Boscaro F, Guarna A, Occhiato EG, Romagnani S, Maggi E, Parronchi P. A novel allergen-adjuvant conjugate suitable for specific immunotherapy of respiratory allergy. J Allergy Clin Immunol 2013; 132:84-92. [PMID: 23498597 DOI: 10.1016/j.jaci.2013.01.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 01/09/2013] [Accepted: 01/24/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Several approaches to find a better adjuvant, focus immunomodulation, and reduce allergenicity are under investigation to improve the efficacy and safety of specific immunotherapy. OBJECTIVE We performed an investigation of the in vitro and in vivo effects of a purified allergen chemically conjugated to a novel 8-OH modified adenine as an adjuvant. METHODS Purified group 2 major allergen from house dust mite chemically conjugated to 4-(6-amino-9-benzyl-8-hydroxy-9H-purin-2-ylsulfanyl)-butyric acid succinimidyl ester was analyzed by using mass spectrometry. The adduct (nDer p 2-Conj) was assayed for Toll-like receptor activation on transfected HEK293 cells, stimulation of innate cells, and effects on the functional phenotype of specific T-cell lines and clones by means of flow cytometry, real-time PCR, and expression of TH-related transcription factors. Lung cells and sera of nDer p 2-Conj-sensitized C57Bl/6 mice were studied by means of cytology, histology, real-time PCR, and ELISA. RESULTS nDer p 2-Conj stimulated IL-12 and IFN-α production from monocytes and plasmacytoid dendritic cells, respectively, retaining the ability to trigger Toll-like receptor 7 exclusively, and expanded human allergen-specific lymphocytes with reduced ability to produce T(H)2-related cytokines and increased IFN-γ levels, as based on GATA-3/T-bet expression. In vivo adduct-sensitized mice exhibited reduced eosinophil infiltration and IL-13 expression in the airways, IFN-γ upregulation together with IgE downregulation, and an increase in allergen-specific IgG(2a) levels in sera. The conjugate exhibited reduced ability to activate human FcεRI(+) cells without inducing T(H)17 cells or autoantibodies. CONCLUSIONS The codelivery of an allergen with a modified adenine as a conjugate inducing modulatory cytokines from innate cells redirects in vitro and in vivo pathogenic TH2 responses without eliciting harmful effects.
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Affiliation(s)
- Lucia Filì
- Department of Experimental and Clinical Medicine, Centre for Research, Transfer and High Education DENOTHE, University of Florence, Florence, Italy
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An S, Chen L, Long C, Liu X, Xu X, Lu X, Rong M, Liu Z, Lai R. Dermatophagoides farinae allergens diversity identification by proteomics. Mol Cell Proteomics 2013; 12:1818-28. [PMID: 23481662 DOI: 10.1074/mcp.m112.027136] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The most important indoor allergens for humans are house dust mites (HDM). Fourteen Dermatophagoides farinae allergens (Der f 1-3, 6, 7, 10, 11, 13-18, and 22) are reported although more than 30 allergens have been estimated in D. farinae. Seventeen allergens belonging to 12 different groups were identified by a procedure of proteomics combined with two-dimensional immunoblotting from D. farina extracts. Their sequences were determined by Edman degradation, mass spectrometry analysis, and cDNA cloning. Their allergenicities were assayed by enzyme-linked immunosorbent assay inhibition tests, immunoblots, basophil activation test, and skin prick tests. Eight of them are the first report as D. farinae allergens. The procedure of using a proteomic approach combined with a purely discovery approach using sera of patients with broad IgE reactivity profiles to mite allergens was an effective method to investigate a more complete repertoire of D. farinae allergens. The identification of eight new D. farinae allergens will be helpful for HDM allergy diagnosis and therapy, especially for patients without response for HDM major allergens. In addition, the current work significantly extendedthe repertoire of D. farinae allergens.
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Affiliation(s)
- Su An
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China
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Bronnert M, Mancini J, Birnbaum J, Agabriel C, Liabeuf V, Porri F, Cleach I, Fabre A, Deneux I, Grandné V, Grob JJ, Berbis P, Charpin D, Bongrand P, Vitte J. Component-resolved diagnosis with commercially available D. pteronyssinus Der p 1, Der p 2 and Der p 10: relevant markers for house dust mite allergy. Clin Exp Allergy 2013; 42:1406-15). [PMID: 22747483 DOI: 10.1111/j.1365-2222.2012.04035.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To establish the prevalence and serum levels of IgE to commercial Der p 1, Der p 2, Der p 10 and the carbohydrate MUXF3 in house dust-mite allergic patients. To compare individual vs. allergen microarray methods. METHODS Prevalence and serum levels of IgE to Dermatophagoides pteronyssinus extract and components Der p 1, Der p 2, Der p 10 and MUXF3, specific IgG4 to D. pteronyssinus, total serum IgE levels, and clinical features (age, asthma, rhinitis and atopic dermatitis) were determined in 123 patients (64 children) with the ImmunoCAP® method. ImmunoCAP ISAC® was performed in 24 patients. RESULTS All patients had serum IgE to D. pteronyssinus. Prevalences of serum IgE to commercial components were Der p 1 93%, Der p 2 77% (Der p 1 or Der p 2 94%), Der p 10 28% and MUXF3 25%. Levels of D. pteronyssinus IgE strongly correlated with Der p 1 and Der p 2 IgE (r = 0.89 and 0.85 respectively), but not Der p 10 and MUXF3. ImmunoCAP® and ImmunoCAP ISAC® were concordant, but the quantitative correlation was poor. No clinical implication for the prevalence, levels, or molecular IgE reactivity profile to house dust mite components was found. CONCLUSIONS AND CLINICAL RELEVANCE Commercially available Der p 1 and Der p 2 strongly correlate with IgE D. pteronyssinus. The lack of Der p 1 and Der p 2 IgE may help with differential diagnosis. Der p 10 serum IgE prevalence and levels suggest different patterns in food and mite-related tropomyosin sensitization. Serum IgE to carbohydrate MUXF3, although unexpectedly prevalent, were low and did not modify D. pteronyssinus IgE levels. Follow-up may be best carried out with individual rather than microarrayed components.
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Affiliation(s)
- M Bronnert
- Laboratoire d’Immunologie, Hôpital Conception 147 bd Baille F-13005 Marseille, France
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Abstract
This overview describes the nature of the immune responses induced by the inhalation of allergens. There is a dichotomy in that B cells have multiple mechanisms that limit the amount of immunoglobulin E (IgE) antibody production, whereas T-cell responses are large even in nonallergic subjects. With the possible exception of responses to cat allergen, however, T cells from nonallergic subjects have limited effector function of helping IgG antibody, and in house-dust mite allergy, this declines with age. Regulation by interleukin 10 (IL-10)-producing cells and CD25+ T-regulatory cells has been proposed, but critically, there is limited evidence for this, and many studies show the highest IL-10 production by cells from allergic subjects. Recent studies have shown the importance of nonlymphoid chemokines thymic stromal lymphopoietin and IL-27, so studying responses in situ is critical. Most sources of allergens have 1 or 2 dominant allergens, and for house-dust mite, it has been shown that people have a predictable responsiveness to high-, mid-and poor-IgE-binding proteins regardless of the total size of their response. This allergen hierarchy can be used to design improved allergen preparations and to investigate how antiallergen responses are regulated.
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Abstract
HDM allergy is associated with asthma, allergic rhinitis and atopic dermatitis. In many countries childhood asthma is predominantly found in HDM-allergic children with their probability of developing disease being proportional to their IgE antibody titers and the early development of Th2 responses. While the pathogenesis is complex and increasingly linked to infection the immunologically-based allergen immunotherapy and anti-IgE antibody therapy are highly beneficial. Immunotherapy could be a short-term treatment providing lifelong relief but the current regimens depend on repeated administration of allergen over years. Immunological investigations point to a contribution of responses outside the Th2 pathway and multiple potential but unproven control mechanisms. Over half of the IgE antibodies are directed to the group 1 and 2 allergens with most of remainder to the group 4, 5, 7 and 21 allergens. This hierarchy found in high and low responders provides a platform for introducing defined allergens into immunotherapy and defined reagents for investigation.
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Affiliation(s)
- Wayne R Thomas
- Centre for Child Health Research, University of Western Australia. wayne @ichr.uwa.edu.au
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45
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Abstract
Here, we discuss various questions related to IgE epitopes: What are the technical possibilities and pitfalls, what is currently known, how can we put this information into hypothetical frameworks and the unavoidable question: how useful is this information for patient care or allergenicity prediction? We discuss the information obtained by (i) 3D structures of allergen-antibody complexes; (ii) analysis of allergen analogues; (iii) mimics without obvious structural similarity; (iv) mAbs competing with IgE; (v) repertoire analysis of cloned IgEs, and other developments. Based on limited data, four suggestions are presented in the literature: (i) IgE might be more cross-reactive than IgG; (ii) IgE might be more often directed to immunologically 'uninviting' surfaces; (iii) IgE epitopes may tend to cluster and (iv) IgE paratopes might have a higher intrinsic flexibility. While these are not proven facts, they still can generate hypotheses for future research. The hypothesis is put forward that the IgE repertoire of switched B-cells is less influenced by positive selection, because positive selection might not be able to rescue IgE-switched B cells. While this might be of interest for the discussion about mechanisms leading to allergen-sensitization, we need to be modest in answering the 'clinical relevance' question. Current evidence indicates the IgE-epitope repertoire is too big to make specific IgE epitopes a realistic target for diagnosis, treatment or allergenicity prediction. In-depth analysis of a few selected IgE epitope-peptides or mimitopes derived from allergen-sequences and from random peptide libraries, respectively, might well prove rewarding in relation to diagnosis and prognosis of allergy, particularly food allergy.
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Affiliation(s)
- R C Aalberse
- Department of Immunopathology, Sanquin Research and Academic Medical Centre, Amsterdam, the Netherlands.
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Tsai JJ, Liu SH, Yin SC, Yang CN, Hsu HS, Chen WB, Liao EC, Lee WJ, Pan HC, Sheu ML. Mite allergen Der-p2 triggers human B lymphocyte activation and Toll-like receptor-4 induction. PLoS One 2011; 6:e23249. [PMID: 21909400 PMCID: PMC3167811 DOI: 10.1371/journal.pone.0023249] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 07/11/2011] [Indexed: 12/14/2022] Open
Abstract
Background Allergic disease can be characterized as manifestations of an exaggerated inflammatory response to environmental allergens triggers. Mite allergen Der-p2 is one of the major allergens of the house dust mite, which contributes to TLR4 expression and function in B cells in allergic patients. However, the precise mechanisms of Der-p2 on B cells remain obscure. Methodology/Principal Findings We investigated the effects of Der-p2 on proinflammatory cytokines responses and Toll-like receptor-4 (TLR4)-related signaling in human B cells activation. We demonstrated that Der-p2 activates pro-inflammatory cytokines, TLR4 and its co-receptor MD2. ERK inhibitor PD98059 significantly enhanced TLR4/MD2 expression in Der-p2-treated B cells. Der-p2 markedly activated mitogen-activated protein kinase (MAPK) phosphatase-1 (MKP-1) and decreased p38 phosphorylation in B cells. MKP-1-siRNA downregulated TLR4/MD2 expression in Der-p2-treated B cells. In addition, Der-p2 significantly up-regulated expression of co-stimulatory molecules and increased B cell proliferation. Neutralizing Der-p2 antibody could effectively abrogate the Der-p2-induced B cell proliferation. Der-p2 could also markedly induce NF-κB activation in B cells, which could be counteracted by dexamethasone. Conclusions/Significance These results strongly suggest that Der-p2 is capable of triggering B cell activation and MKP-1-activated p38/MAPK dephosphorylation-regulated TLR4 induction, which subsequently enhances host immune, defense responses and development of effective allergic disease therapeutics in B cells.
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Affiliation(s)
- Jaw Ji Tsai
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shing Hwa Liu
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Sui Chu Yin
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Cheng Ning Yang
- Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan
| | - Hong Sheng Hsu
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Wen Bao Chen
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - En Chih Liao
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Wen Jane Lee
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Hung Chuan Pan
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Meei Ling Sheu
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
- * E-mail:
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Yang AC, Arruda LK, Santos ABR, Barbosa MCR, Chapman MD, Galvão CES, Kalil J, Morato-Castro FF. Measurement of IgE antibodies to shrimp tropomyosin is superior to skin prick testing with commercial extract and measurement of IgE to shrimp for predicting clinically relevant allergic reactions after shrimp ingestion. J Allergy Clin Immunol 2010; 125:872-8. [PMID: 20226506 DOI: 10.1016/j.jaci.2009.11.043] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 11/06/2009] [Accepted: 11/06/2009] [Indexed: 10/19/2022]
Abstract
BACKGROUND Shrimp is a frequent cause of food allergy. Tropomyosin is the major allergen in shrimp, and it shares homology to tropomyosins from other crustaceans, dust mites, cockroach, and parasites. OBJECTIVE The aim of this study was to determine the value of detection of IgE to shrimp tropomyosin in the diagnosis of shrimp allergy. METHODS We have studied 35 patients with asthma, rhinitis, or both who were sensitized to Dermatophagoides pteronyssinus. All subjects underwent skin prick testing in addition to double-blind, placebo-controlled food challenges (DBPCFC); oral open challenges; or both with shrimp. Measurements of IgE to shrimp and shrimp tropomyosin were carried out by means of CAP and chimeric ELISA, respectively. RESULTS Oral challenges confirmed the diagnosis of shrimp allergy in 7 patients. IgE measurement to shrimp tropomyosin was positive in 71.4% of the patients with shrimp allergy. Of the 28 patients without shrimp allergy, only 7.1% (2/28) had IgE to shrimp tropomyosin compared with 25% (7/28) who had IgE to shrimp and 35.7% (10/28) who had positive skin prick test responses to shrimp. Sensitivity was similar for all 3 methods (71.4%); in contrast, specificity of IgE to shrimp tropomyosin (92.8%) was greater than that of IgE to shrimp (75%) and skin prick testing (64.2%). With regard to diagnostic efficiency, measurement of IgE to shrimp tropomyosin was superior to measurement of IgE to shrimp and skin prick testing (88.5%, 74.2%, and 65.7%, respectively). CONCLUSION Use of measurements of IgE to shrimp tropomyosin provided added value to the diagnosis of shrimp allergy.
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Affiliation(s)
- Ariana C Yang
- Division of Clinical Immunology and Allergy, University of São Paulo School of Medicine, São Paulo, Brazil
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48
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Hales BJ, Martin AC, Pearce LJ, Rueter K, Zhang G, Khoo SK, Hayden CM, Bizzintino J, McMinn P, Geelhoed GC, Lee WM, Goldblatt J, Laing IA, LeSouëf PN, Thomas WR. Anti-bacterial IgE in the antibody responses of house dust mite allergic children convalescent from asthma exacerbation. Clin Exp Allergy 2009; 39:1170-8. [PMID: 19400897 PMCID: PMC7164829 DOI: 10.1111/j.1365-2222.2009.03252.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Background
Atopic sensitization to the house dust mite (HDM) is associated with altered antibody responses to the nasopharyngeal colonizing bacterium Haemophilus influenzae and children admitted to the emergency department for asthma exacerbation have reduced IgG responses to HDM allergens. Objective
To investigate anti‐bacterial and anti‐allergen antibody responses during convalescence from asthma exacerbation and differences found in exacerbations associated with and without viral infection. Results
IgE antibodies to the P6 bacterial antigen increased in 60% of sera during convalescence and for many children achieved titres as high as IgE titres to allergens. In contrast IgE anti‐HDM titres declined during convalescence. The anti‐bacterial IgE titres were the same in subjects with and without virus infection while the anti‐HDM IgE declined more rapidly in virus‐infected subjects. IgG titres to the major HDM allergens showed no consistent increase and the overall IgG anti‐HDM titres even declined in subjects without a virus infection. Anti‐bacterial IgG antibodies in contrast to IgE did not change. Patients with frequent episodic or persistent asthma had similar IgE anti‐bacterial titres to patients with infrequent asthma during the acute phase, although they had reduced IgG titres to both the bacteria and the HDM. Conclusions
During the period following an acute exacerbation of asthma there was a marked and specific increase in anti‐bacterial IgE compared with a reduced IgE response to HDM. This provides further support for the concept of T‐helper type 2 responses to bacterial antigens playing a role in asthma pathogenesis.
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Affiliation(s)
- B J Hales
- The Division of Molecular Biotechnology, University of Western Australia, Perth, Australia.
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Moed H, van Wijk RG, de Jongste JC, van der Wouden JC. Skin tests, T cell responses and self-reported symptoms in children with allergic rhinitis and asthma due to house dust mite allergy. Clin Exp Allergy 2008; 39:222-7. [PMID: 19032359 DOI: 10.1111/j.1365-2222.2008.03130.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In allergic responses, a distinction is made between an early-phase response, several minutes after allergen exposure, and a late-phase response after several hours. During the late phase, eosinophils and T cells infiltrate the mucosa and play an important role in inflammation. OBJECTIVE The aim of this study was to examine the relationship between allergen-induced late-phase skin responses and in vitro T cell reactivity. In addition, the relationship between allergen-induced skin or T cell responses and the severity of self-reported symptoms was studied in children with house dust mite allergy. METHODS A total of 59 house dust mite-allergic children (6-18 years) were recruited in general practice. These children or their parents rated their nasal and asthma symptoms on diary cards during 1 month. Allergen skin tests were performed and read after 15 min (early phase) and 6 h (late phase). Allergen-specific T cell proliferation was determined, and Th2 cytokine (IL-5 and IL-13) secretion was analysed. RESULTS The size of the late-phase skin response correlated with in vitro T cell proliferation (r(s)=0.38, P=0.003) but not with Th2 cytokine secretion (r(s)=0.16, P=0.2 for both IL-5 and IL-13). Moreover, the late-phase skin response and T cell proliferation correlated with asthma symptoms (r(s)=0.30, P=0.02 for skin response and r(s)=0.28, P=0.03 for T cell proliferation) but not with nasal symptoms (r(s)=0.19, P=0.15 for skin response and r(s)=0.09, P=0.52 for T cell proliferation). The early-phase skin response correlated with the nasal symptom score (r(s)=0.34, P=0.01) but not with asthma symptom scores (r(s)<0.005, P=0.97). CONCLUSION In this study, the late-phase skin test response correlated with in vitro T cell proliferation but not with Th2 cytokine secretion. We found weak or no correlations between late-phase skin responses and symptoms of asthma or rhinitis in children with house dust mite allergy. This suggests that late-phase skin responses reflect certain T cell properties but are of limited value for the evaluation of airway symptoms in atopic children.
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Affiliation(s)
- H Moed
- Department of General Practice, Erasmus MC - University Medical Center, Rotterdam, The Netherlands.
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50
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Santos ABR, Rocha GM, Oliver C, Ferriani VPL, Lima RC, Palma MS, Sales VSF, Aalberse RC, Chapman MD, Arruda LK. Cross-reactive IgE antibody responses to tropomyosins from Ascaris lumbricoides and cockroach. J Allergy Clin Immunol 2008; 121:1040-6.e1. [PMID: 18275995 DOI: 10.1016/j.jaci.2007.12.1147] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2007] [Revised: 11/30/2007] [Accepted: 12/10/2007] [Indexed: 01/25/2023]
Abstract
BACKGROUND Evidence indicates that infection with Ascaris lumbricoides may promote development of allergy and asthma. OBJECTIVE To study the role of tropomyosin, a pan-allergen in invertebrates, in IgE responses to A lumbricoides. METHODS Recombinant A lumbricoides and Periplaneta americana tropomyosins were expressed in Pichia pastoris. Levels of IgE to tropomyosins from A lumbricoides and P americana were determined by chimeric ELISA in sera from 119 children living in a parasite-endemic area and 112 patients with cockroach allergy from the allergy clinics. Presence of tropomyosin in A lumbricoides larvae at L3 stage was evaluated by immunofluorescence using mAb 1A6, directed against mite tropomyosin. Molecular modeling of P americana and A lumbricoides tropomyosins was performed by using the MODELLER program. RESULTS A lumbricoides tropomyosin showed 69% to 98% sequence identity to tropomyosins from other invertebrates. The predicted structure of A lumbricoides tropomyosin was similar to that of P americana tropomyosin and showed the characteristic coiled-coil structure. Strong correlation was found for IgE antibodies to tropomyosins from A lumbricoides and P americana in sera from children living in a parasite-endemic area and from patients with cockroach allergy. Larvae of A lumbricoides reacted strongly with mAb 1A6. CONCLUSION Tropomyosin induces IgE responses in A lumbricoides-infected children and in patients allergic to cockroach.
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Affiliation(s)
- Ana Beatriz R Santos
- Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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