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Sio YY, Victoria Nanong GA, Lim JA, Matta SA, Say YH, Teh KF, Wong YR, Rawanan Shah SM, Reginald K, Chew FT. Sensitization to oil palm pollen associates with risks and severity of allergic diseases. World Allergy Organ J 2024; 17:100853. [PMID: 38235258 PMCID: PMC10792632 DOI: 10.1016/j.waojou.2023.100853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/11/2023] [Accepted: 11/25/2023] [Indexed: 01/19/2024] Open
Abstract
Background Elaeis guineensis (Ela g, oil palm) pollen is one of the most predominant species of inhalant allergens in the tropical Southeast Asia region; however, its association with the manifestation of allergic diseases remains largely unexplored. This study aimed to determine the sensitization pattern of oil palm pollen and associate this with the risk and severity of allergic diseases. Methods Participants were recruited as a part of the Singapore and Malaysia cross-sectional genetic and epidemiological study (SMCSGES). Two independent cohorts were recruited: n = 564 serum samples were collected and serological assessment was performed against a panel of 16 crude inhalant allergens including house dust mite, pet, insect, pollen, and fungal allergens; n = 13 652 Singapore/Malaysia Chinese young adults were recruited and skin prick test was used to assess oil palm sensitization, which was tested for its association with the risk and severity of asthma, allergic rhinitis (AR), and atopic dermatitis (AD). Results The sensitization rate of oil palm pollen is 9.6% in the n = 564 Singapore/Malaysia cohort. In the n = 13 652 Singapore/Malaysia Chinese cohort, oil palm sensitization significantly associates with increased risks of asthma (p = 1.34x10-4), AR (p = 2.91x10-13), and AD (p = 6.95x10-7). Asthmatic patients with oil palm sensitization have increased risks of wheezing (p = 0.00995), nocturnal cough (p = 0.0122), and exacerbations (p = 0.00139) in the past 12 months. AR patients with oil palm sensitization also have an increased risk of developing moderate-to-severe symptoms (p = 0.00113). Conclusions We have identified significant associations of oil palm sensitization with increased risks, exacerbations, and the severity of symptoms of allergic diseases in the tropical Southeast Asian region (Singapore/Malaysia).
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Affiliation(s)
- Yang Yie Sio
- Department of Biological Sciences, National University of Singapore, Singapore
| | | | - Jie Ann Lim
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Sri Anusha Matta
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Yee-How Say
- Department of Biological Sciences, National University of Singapore, Singapore
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Perak, Malaysia
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Keng Foo Teh
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Yi Ru Wong
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Smyrna Moti Rawanan Shah
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Kavita Reginald
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Fook Tim Chew
- Department of Biological Sciences, National University of Singapore, Singapore
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2
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Busold S, Akkerdaas JH, Zijlstra-Willems EM, van der Graaf K, Tas SW, de Jong EC, van Ree R, Geijtenbeek TBH. Toll-like receptor 4 and Syk kinase shape dendritic cell-induced immune activation to major house dust mite allergens. Front Med (Lausanne) 2023; 10:1105538. [PMID: 37614946 PMCID: PMC10442820 DOI: 10.3389/fmed.2023.1105538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 07/20/2023] [Indexed: 08/25/2023] Open
Abstract
Background House dust mite (HDM) is a major cause of respiratory allergic diseases. Dendritic cells (DCs) play a central role in orchestrating adaptive allergic immune responses. However, it remains unclear how DCs become activated by HDM. Biochemical functions of the major HDM allergens Der p 1 (cysteine protease) and Der p 2 (MD2-mimick) have been implicated to contribute to DC activation. Methods We investigated the immune activating potential of HDM extract and its major allergens Der p 1 and Der p 2 using monocyte-derived DCs (moDCs). Maturation and activation markers were monitored by flow cytometry and cytokine production by ELISA. Allergen depletion and proteinase K digestion were used to investigate the involvement of proteins, and in particular of the major allergens. Inhibitors of spleen tyrosine kinase (Syk), Toll-like receptor 4 (TLR4) and of C-type lectin receptors (CLRs) were used to identify the involved receptors. The contribution of endotoxins in moDC activation was assessed by their removal from HDM extract. Results HDM extract induced DC maturation and cytokine responses in contrast to the natural purified major allergens Der p 1 and Der p 2. Proteinase K digestion and removal of Der p 1 or Der p 2 did not alter the immune stimulatory capacity of HDM extract. Antibodies against the CLRs Dectin-1, Dectin-2, and DC-SIGN did not affect cytokine responses. In contrast, Syk inhibition partially reduced IL-6, IL-12 and completely blocked IL-10. Blocking TLR4 signaling reduced the HDM-induced IL-10 and IL-12p70 induction, but not IL-6, while endotoxin removal potently abolished the induced cytokine response. Conclusion Our data strongly suggest that HDM-induced DC activation is neither dependent on Der p 1 nor Der p 2, but depend on Syk and TLR4 activation, which might suggest a crosstalk between Syk and TLR4 pathways. Our data highlight that endotoxins play a potent role in immune responses targeting HDM.
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Affiliation(s)
- Stefanie Busold
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Jaap H. Akkerdaas
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Esther M. Zijlstra-Willems
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | | | - Sander W. Tas
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
- Amsterdam Rheumatology and Immunology Center, Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Esther C. de Jong
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Ronald van Ree
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
- Amsterdam University Medical Centers, location AMC, Department of Otorhinolaryngology, Amsterdam, Netherlands
| | - Teunis B. H. Geijtenbeek
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
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3
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Mondol E, Donado K, Regino R, Hernandez K, Mercado D, Mercado AC, Benedetti I, Puerta L, Zakzuk J, Caraballo L. The Allergenic Activity of Blo t 2, a Blomia tropicalis IgE-Binding Molecule. Int J Mol Sci 2023; 24:ijms24065543. [PMID: 36982614 PMCID: PMC10053487 DOI: 10.3390/ijms24065543] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
Only few allergens derived from house dust mite (HDM) species have been evaluated in terms of their potential to induce allergic inflammation. In this study, we aimed to evaluate different aspects of the allergenicity and allergenic activity of Blo t 2, a Blomia tropicalis allergen. Blo t 2 was produced as a recombinant protein in Escherichia coli. Its allergenic activity was tested in humans by skin prick test and basophil activation assays, and in mice, by passive cutaneous anaphylaxis and a model of allergic airway inflammation. Sensitization rate to Blo t 2 (54.3%) was similar to that found to Blo t 21 (57.2%) and higher than to Der p 2 (37.5%). Most Blo t 2-sensitized patients showed a low intensity response (99.5%). Blo t 2 elicited CD203c upregulation and allergen induced skin inflammation. Additionally, immunized animals produced anti-Blo t 2 IgE antibodies and passive transfer of their serum to non-immunized animals induced skin inflammation after allergen exposure. Immunized animals developed bronchial hyperreactivity and a strong inflammatory lung reaction (eosinophils and neutrophils). These results confirm the allergenic activity of Blo t 2 and supports its clinical relevance.
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Allergen-Immuntherapie bei Hausstaubmilben-assoziierter allergischer Rhinitis: Wirksamkeit der 300 IR-Milbentablette. ALLERGO JOURNAL 2023. [DOI: 10.1007/s15007-022-5665-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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5
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Abu El-Enin MA, Rabie Shehab El-Din EM, Abdelwahab HW, Abd El-Maksoud A, Abd El-Aziz AM, Shaaban MI, Attia AN, Aboukamar WA, Mohei-Aldin S, Belal F. Preparation of chemically stable allergen-specific sublingual immunotherapy from Egyptian allergens. J Clin Lab Anal 2022; 36:e24261. [PMID: 35150027 PMCID: PMC8906013 DOI: 10.1002/jcla.24261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 12/20/2021] [Accepted: 01/17/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The term "allergen extracts" refers to solutions of proteins or glycoproteins extracted from source raw materials. OBJECTIVES This study was planned to prepare chemically stable sublingual immunotherapy from different allergens in Egypt. METHODS Allergen extraction from raw materials. The concentrated aqueous extract of each allergen was mixed with an equal volume of glycerol. The protein content of the preparations was determined using the modified Lowry assay method. The prepared allergens were stored for 9 months at 2-4°C. Samples were analyzed periodically (0, 3, 6, and 9 months of intervals) adopting the Lowry Assay method. Levels of specific IgE to Chenopodium album antigens were measured in patients' sera by ELISA. RESULTS The concentration of all prepared allergens, as indicated by the concentration of the protein content, was found to decrease exponentially with time, implying first-order kinetics of degradation. From the values of the slopes of the log plot for each allergen, the half-life time (t1/2 ) and (t1/4 ) values were calculated. The expiration date was considered as the time after which the allergen loses 25% of its potency. The obtained values of t1/4% vary according to the type of vaccine. The most stable one is that of Chenopodium album pollens (2.4 years) and the least stable is that of house dust Mites (9 months). The immunological characters of Chenopodium album extract were stable for at least 6 months. CONCLUSION Differences exist among allergen extracts made by multiple manufacturers. So, developments in studies on allergen preparation and characterization in a different locality are necessary.
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Affiliation(s)
- Mohammed A Abu El-Enin
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.,Department of Medicinal Chemistry, Faculty of Pharmacy, National University of Science and Technology, Nasiria, Iraq
| | | | | | | | - Abeer M Abd El-Aziz
- Microbiology & Immunology Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mona I Shaaban
- Microbiology & Immunology Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Ahmed Nader Attia
- Agronomy Department, Faculty of agriculture, Mansoura University, Mansoura, Egypt
| | - Wafaa A Aboukamar
- Department of medical parasitology, Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Sanaa Mohei-Aldin
- Microbiology & Immunology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Fathalla Belal
- Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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6
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Erban T, Klimov PB, Harant K, Talacko P, Nesvorna M, Hubert J. Label-free proteomic analysis reveals differentially expressed Wolbachia proteins in Tyrophagus putrescentiae: Mite allergens and markers reflecting population-related proteome differences. J Proteomics 2021; 249:104356. [PMID: 34438106 DOI: 10.1016/j.jprot.2021.104356] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/12/2021] [Accepted: 08/19/2021] [Indexed: 12/21/2022]
Abstract
Tyrophagus putrescentiae is an astigmatid mite of great economic, medical and veterinary importance. The microbiome, especially intracellular bacteria, may affect allergy/allergen expression. We targeted Wolbachia proteins, allergen comparisons and markers in Wolbachia-mite interactions in three mite populations. A decoy database was constructed by proteogenomics using the T. putrescentiae draft genome, Wolbachia transcriptome assembly and current T. putrescentiae-related sequences in GenBank. Among thousands of mite-derived proteins, 18 Wolbachia proteins were reliably identified. We suggest that peroxiredoxin, bacterioferritin, ankyrin repeat domain-containing protein and DegQ family serine endoprotease indicate a higher-level bacterium-bacterium-host interaction. We produced evidence that the host-Wolbachia interaction is modulated through pattern recognition receptors (PRRs), mannose-binding lectins/mannose receptors, the cholinergic anti-inflammatory pathway with TNF-α, and others. We observed Tyr p 3 suppression in mites with Wolbachia, linking trypsin to PRR modulation. Nine out of the 12 current WHO/IUIS official allergens were reliably identified, but the remaining three allergens, Tyr p 1, 8 and 35, were detected as only trace hits. This study provides numerous markers for further Wolbachia-host interaction research. For accuracy, mite allergens should be considered according to abundance in species, but mite populations/strains, as well as their microbiome structure, may be key factors. SIGNIFICANCE: The astigmatid mites occurring in homes are significant producers of allergens that are highly dangerous to humans and domesticated animals. Mites are tightly associated with microorganisms that affect their biology and consequently allergy signatures. Mite populations were found to be infected with certain intracellular bacteria, but some populations lacked an intracellular bacterium. Our previous research showed that some populations of Tyrophagus putrescentiae are infected with Wolbachia, but some populations host additional bacteria of interest. Thus, there are not only interactions between the mites and Wolbachia but also likely an additional level of interaction that can be found in the interaction between different bacteria in the mites. These "higher-level" signatures and consequences that bacteria affect, including allergen production, are not understood in mites. In this study, we identified Wolbachia-specific proteins in mites for the first time. This study provides Wolbachia- and mite-derived markers that can be clues for describing "higher-level" mite-bacterium-bacterium interactions. Indeed, the microbiome contribution to allergies can potentially be derived directly from bacterial proteins, especially if they are abundant.
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Affiliation(s)
- Tomas Erban
- Crop Research Institute, Drnovska 507/73, Prague 6-Ruzyne CZ-16106, Czechia.
| | - Pavel B Klimov
- School of Natural Sciences, Bangor University, Bangor LL57 2 UW, UK; Institute of Biology, University of Tyumen, Pirogova 3, 625043 Tyumen, Russia
| | - Karel Harant
- Proteomics Core Facility, Faculty of Science, Charles University, BIOCEV, Prumyslova 595, Vestec CZ-25242, Czechia; Institute for Environmental Studies, Faculty of Science, Charles University, Benatska 2, Prague 2 CZ-128 01, Czechia
| | - Pavel Talacko
- Proteomics Core Facility, Faculty of Science, Charles University, BIOCEV, Prumyslova 595, Vestec CZ-25242, Czechia
| | - Marta Nesvorna
- Crop Research Institute, Drnovska 507/73, Prague 6-Ruzyne CZ-16106, Czechia
| | - Jan Hubert
- Crop Research Institute, Drnovska 507/73, Prague 6-Ruzyne CZ-16106, Czechia
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7
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Foo ACY, Mueller GA. Abundance and Stability as Common Properties of Allergens. FRONTIERS IN ALLERGY 2021; 2:769728. [PMID: 35386965 PMCID: PMC8974735 DOI: 10.3389/falgy.2021.769728] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/04/2021] [Indexed: 01/06/2023] Open
Abstract
There have been many attempts to identify common biophysical properties which differentiate allergens from their non-immunogenic counterparts. This review will focus on recent studies which examine two such factors: abundance and stability. Anecdotal accounts have speculated that the elevated abundance of potential allergens would increase the likelihood of human exposure and thus the probability of sensitization. Similarly, the stability of potential allergens dictates its ability to remain a viable immunogen during the transfer from the source to humans. This stability could also increase the resilience of potential allergens to both gastric and endosomal degradation, further skewing the immune system toward allergy. Statistical analyses confirm both abundance and stability as common properties of allergens, while epidemiological surveys show a correlation between exposure levels (abundance) and allergic disease. Additional studies show that changes in protein stability can predictably alter gastric/endosomal processing and immunogenicity, providing a mechanistic link between stability and allergenicity. However, notable exceptions exist to both hypotheses which highlight the multifaceted nature of immunological sensitization, and further inform our understanding of some of these other factors and their contribution to allergic disease.
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8
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Sio YY, Pang SL, Say YH, Teh KF, Wong YR, Shah SMR, Reginald K, Chew FT. Sensitization to Airborne Fungal Allergens Associates with Asthma and Allergic Rhinitis Presentation and Severity in the Singaporean/Malaysian Population. Mycopathologia 2021; 186:583-588. [PMID: 34258653 PMCID: PMC8536550 DOI: 10.1007/s11046-021-00532-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 01/28/2021] [Indexed: 11/29/2022]
Abstract
Fungal spores and conidia are the major components of total airspora in the tropical Asia environment, and their sensitization patterns are often associated with allergic diseases such as asthma, allergic rhinitis (AR), and atopic dermatitis. Hence, we recruited a cross-sectional cohort of 9223 Singapore/Malaysia Chinese adults and assessed their sensitization against Curvularia lunata allergen using the skin prick test approach. A subset of this cohort (n = 254) was also screened for specific Immunoglobulin E (sIgE) titers against a panel of 11 fungal allergens. We found significant association of Curvularia lunata sensitization with the risk of asthma (OR = 1.66, 95% CI: 1.17–2.33; p = 0.00391) and AR (OR = 1.69, 95% CI: 1.18–2.41; p = 0.00396). Among asthmatic patients (n = 1680), Curvularia lunata sensitization also increased frequencies of wheezing symptoms (OR = 1.81, 95% CI: 1.05–2.96; p = 0.0239), general practitioner/specialist visits (OR = 2.37, 95% CI: 1.13–4.61; p = 0.0157), and other asthma-related exacerbation events (OR = 2.14, 95% CI: 1.04–4.10; p = 0.0289). In our serum cohort, sensitization to Aspergillus spp. was the most common fungal sensitization, with 23.6% (n = 60) had a class 3 and above sensitization (positive sensitization; sIgE titers of > 3.5 kU/L) against this allergen. Increasing sIgE titer against Aspergillus spp. was also correlated with increased AR risk and AR-related symptoms. In conclusion, our findings emphasize an important role of fungal sensitization in the manifestations of asthma and AR in the Southeast Asian Chinese population.
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Affiliation(s)
- Yang Yie Sio
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Sze Lei Pang
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Yee-How Say
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore.,Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Perak, Malaysia
| | - Keng Foo Teh
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Yi Ru Wong
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Smyrna Moti Rawanan Shah
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Kavita Reginald
- Department of Biological Sciences, School of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Fook Tim Chew
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore.
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9
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Incorvaia C, Al‐Ahmad M, Ansotegui IJ, Arasi S, Bachert C, Bos C, Bousquet J, Bozek A, Caimmi D, Calderón MA, Casale T, Custovic A, De Blay F, Demoly P, Devillier P, Didier A, Fiocchi A, Fox AT, Gevaert P, Gomez M, Heffler E, Ilina N, Irani C, Jutel M, Karagiannis E, Klimek L, Kuna P, O'Hehir R, Kurbacheva O, Matricardi PM, Morais‐Almeida M, Mosges R, Novak N, Okamoto Y, Panzner P, Papadopoulos NG, Park H, Passalacqua G, Pawankar R, Pfaar O, Schmid‐Grendelmeier P, Scurati S, Tortajada‐Girbés M, Vidal C, Virchow JC, Wahn U, Worm M, Zieglmayer P, Canonica GW. Personalized medicine for allergy treatment: Allergen immunotherapy still a unique and unmatched model. Allergy 2021; 76:1041-1052. [PMID: 32869882 DOI: 10.1111/all.14575] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/17/2022]
Abstract
The introduction of personalized medicine (PM) has been a milestone in the history of medical therapy, because it has revolutionized the previous approach of treating the disease with that of treating the patient. It is known today that diseases can occur in different genetic variants, making specific treatments of proven efficacy necessary for a given endotype. Allergic diseases are particularly suitable for PM, because they meet the therapeutic success requirements, including a known molecular mechanism of the disease, a diagnostic tool for such disease, and a treatment blocking the mechanism. The stakes of PM in allergic patients are molecular diagnostics, to detect specific IgE to single-allergen molecules and to distinguish the causative molecules from those merely cross-reactive, pursuit of patient's treatable traits addressing genetic, phenotypic, and psychosocial features, and omics, such as proteomics, epi-genomics, metabolomics, and breathomics, to forecast patient's responsiveness to therapies, to detect biomarker and mediators, and to verify the disease control. This new approach has already improved the precision of allergy diagnosis and is likely to significantly increase, through the higher performance achieved with the personalized treatment, the effectiveness of allergen immunotherapy by enhancing its already known and unique characteristics of treatment that acts on the causes.
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Affiliation(s)
| | - Mona Al‐Ahmad
- Microbiology Department Faculty of Medicine Kuwait University Kuwait
- Drug Allergy Unit Department of Allergy Al‐Rashed Allergy Center Kuwait
| | | | - Stefania Arasi
- Department of Allergy Bambino Gesu' Childrens' Hospital IRCCS Rome Italy
| | - Claus Bachert
- Upper Airways Research Laboratory ENT Dept Ghent University Hospital Ghent Belgium
- Karolinska Institutet Stockholm Sweden
- Department of ENT Diseases Karolinska University Hospital Stockholm Sweden
| | - Catherine Bos
- Stallergenes Greer Medical Affairs Department Antony France
| | - Jean Bousquet
- University Hospital Montpellier France – MACVIA‐France Montpellier France
| | - Andrzéj Bozek
- Clinical Department of Internal Disease, Dermatology and Allergology Medical University of Silesia Katowice Poland
| | - Davide Caimmi
- Department of Pulmonology and Addictology Arnaud de Villeneuve Hospital Montpellier University Montpellier France
| | - Moises A. Calderón
- Imperial College London – National Heart and Lung Institute Royal Brompton Hospital NHS London UK
| | - Thomas Casale
- Division of Allergy/Immunology University of South Florida Tampa FL USA
| | - Adnan Custovic
- Centre for Respiratory Medicine and Allergy Institute of Inflammation and Repair University of Manchester and University Hospital of South Manchester Manchester UK
| | - Frédéric De Blay
- Allergy Division Chest Diseases Department Strasbourg University Hospital Strasbourg France
| | - Pascal Demoly
- Department of Pulmonology and Addictology Arnaud de Villeneuve Hospital Montpellier University Montpellier France
- Sorbonne Université UMR‐S 1136 INSERM IPLESP EPAR Team Paris France
| | - Philippe Devillier
- Laboratoire de Recherche en Pharmacologie Respiratoire Pôle des Maladies des Voies Respiratoires Hôpital Foch Université Paris‐Saclay Suresnes France
| | - Alain Didier
- Respiratory Disease Dept Larrey Hospital University Hospital of Toulouse Paul Sabatier University Toulouse France
| | - Alessandro Fiocchi
- Department of Allergy Bambino Gesu' Childrens' Hospital IRCCS Rome Italy
| | - Adam T. Fox
- Department of Paediatric Allergy Guy's & St Thomas' Hospitals NHS Foundation Trust London UK
| | - Philippe Gevaert
- Upper Airways Research Laboratory ENT Dept Ghent University Hospital Ghent Belgium
| | | | - Enrico Heffler
- Personalized Medicine, Asthma & Allergy – Humanitas Clinical and Research Center IRCCS Rozzano Italy
- Department of Biomedical Science Humanitas University Pieve Emanuele Italy
| | - Natalia Ilina
- Federal Institute of Immunology of Russia Moscow Russia
| | - Carla Irani
- Department of Internal Medicine and Clinical Immunology Faculty of Medicine Hotel Dieu de France Hospital Saint Joseph University Beirut Lebanon
| | - Marek Jutel
- Department of Clinical Immunology Wrocław Medical University Wrocław Poland
| | | | - Ludger Klimek
- Center for Rhinology and Allergology Wiesbaden Germany
| | - Piotr Kuna
- Division of Internal Medicine, Asthma and Allergy Barlicki University Hospital Medical University of Lodz Lodz Poland
| | - Robin O'Hehir
- Alfred Hospital and Monash University Melbourne Australia
| | - Oxana Kurbacheva
- National Research Center – Institute of Immunology Federal Medical‐Biological Agency of Russia Moscow Russia
| | - Paolo M. Matricardi
- Department of Pediatric Pulmonology, Immunology and Intensive Care Medicine Charité – University Medicine Berlin Berlin Germany
| | - Mario Morais‐Almeida
- Immunoallergy Department of CUF‐Descobertas Hospital Lisbon Portugal
- CUF‐Infante Santo Hospital Lisbon Portugal
| | - Ralph Mosges
- Faculty of Medicine Institute of Medical Statistics and Computational Biology University of Cologne Cologne Germany
- CRI – Clinical Research International Ltd. Cologne Germany
| | - Natalija Novak
- Department of Dermatology and Allergy University Hospital Bonn Bonn Germany
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology Chiba University Hospital Chiba Japan
| | - Petr Panzner
- Department of Immunology and Allergology Faculty of Medicine in Pilsen Charles University in Prague Pilsen Czech Republic
| | - Nikolaos G. Papadopoulos
- Division of Infection, Immunity & Respiratory Medicine Royal Manchester Children's Hospital University of Manchester Manchester UK
- Allergy Department 2nd Pediatric Clinic Athens General Children's Hospital "P&A Kyriakou" University of Athens Athens Greece
| | - Hae‐Sim Park
- Department of Allergy and Clinical Immunology Ajou University School of Medicine Suwon South Korea
| | - Giovanni Passalacqua
- Allergy and Respiratory Diseases Ospedale Policlino San Martino – University of Genoa Genoa Italy
| | - Ruby Pawankar
- Department of Pediatrics Nippon Medical School Tokyo Japan
| | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery Section of Rhinology and Allergy University Hospital Marburg Philipps‐Universität Marburg Marburg Germany
| | | | - Silvia Scurati
- Stallergenes Greer Medical Affairs Department Antony France
| | - Miguel Tortajada‐Girbés
- Pediatric Pulmonology and Allergy Unit Department of Pediatrics Dr. Peset University Hospital Valencia Spain
- Department of Pediatrics, Obstetrics and Gynecology University of Valencia Valencia Spain
- IVI Foundation Valencia Spain
| | - Carmen Vidal
- Allergy Service Complejo Hospitalario Universitario de Santiago Santiago de Compostela Spain
| | - J. Christian Virchow
- Department of Pneumology/Intensive Care Medicine University of Rostock Rostock Germany
| | - Ulrich Wahn
- Department of Pediatric Pulmonology, Immunology and Intensive Care Medicine Charité – University Medicine Berlin Berlin Germany
| | - Margitta Worm
- Department of Pediatric Pulmonology, Immunology and Intensive Care Medicine Charité – University Medicine Berlin Berlin Germany
| | | | - Giorgio W. Canonica
- Personalized Medicine, Asthma & Allergy – Humanitas Clinical and Research Center IRCCS Rozzano Italy
- Department of Biomedical Science Humanitas University Pieve Emanuele Italy
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10
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Huber S, Gadermaier G, Bohle B, Ferreira F, Briza P. Proteomic profiling of commercial dust mite skin prick test solutions and allergy vaccines from India. World Allergy Organ J 2021; 14:100516. [PMID: 33717396 PMCID: PMC7921882 DOI: 10.1016/j.waojou.2021.100516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/13/2021] [Accepted: 01/19/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Skin prick test (SPT) solutions and allergy vaccines (AVs) are crucial tools for diagnosis and therapy of allergies. It was the aim of this study to corroborate the content of products for diagnosis and treatment of dust mite allergies that are produced and sold in India. METHODS SDS-PAGE, immunoblots and high-resolution mass spectrometric analysis was performed with 16 house dust mite (HDM) SPT solutions and AVs from 3 Indian manufacturers. Authority-approved European SPT solutions and in-house extracts were used as references. RESULTS From the 5 Indian Dermatophagoides pteronyssinus products, none contained proteins from this source. Instead, 1 sample contained Dermatophagoides farinae and human serum proteins, 4 products contained allergens from the storage mite Suidasia medanensis, allergens from the legume Cicer arietinum (chickpea), and proteins from baker's yeast. From 4 Indian D. farinae-labeled products, 2 contained human serum proteins and a limited number of D. farinae allergens. Two contained only Suidasia, Cicer, and yeast proteins. In contrast, the European authority-approved D. pteronyssinus and D. farinae SPT solutions that were used as reference in this study, contained exclusively proteins of the respective species and covered the expected allergen spectra. The Blomia tropicalis sample contained no Blomia allergens at all, but consisted exclusively of Suidasia, Cicer, and yeast proteins. All 6 HDM samples consisted of human serum proteins and limited amounts of D. farinae allergens. CONCLUSIONS All commercial Indian SPT solutions and AVs analyzed in this study are not suitable for dust mite allergy diagnosis and therapy, as they contain either no, or only a limited number of, HDM allergens. In addition, their use could lead to misdiagnosis since some of them contain allergens from other sources, including the storage mite Suidasia, chickpea, as well as baker's yeast. Further, their application might be harmful to patients, as some products contain large amounts of proteins of human origin. Analysis of European SPT solutions, on the other hand, confirmed their suitability for dust mite allergy diagnosis.
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Affiliation(s)
- Sara Huber
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Barbara Bohle
- Department of Pathophysiology and Allergy Research, Centre for Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
| | - Fatima Ferreira
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Peter Briza
- Department of Biosciences, University of Salzburg, Salzburg, Austria
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11
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Hubert J, Nesvorna M, Green SJ, Klimov PB. Microbial Communities of Stored Product Mites: Variation by Species and Population. MICROBIAL ECOLOGY 2021; 81:506-522. [PMID: 32852571 DOI: 10.1007/s00248-020-01581-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 08/18/2020] [Indexed: 05/25/2023]
Abstract
Arthropod-associated microorganisms are important because they affect host fitness, protect hosts from pathogens, and influence the host's ability to vector pathogens. Stored product mites (Astigmata) often establish large populations in various types of food items, damaging the food by direct feeding and introducing contaminants, including their own bodies, allergen-containing feces, and associated microorganisms. Here we access the microbial structure and abundance in rearing diets, eggs, feces fraction, and mite bodies of 16 mite populations belonging to three species (Carpoglyphus lactis, Acarus siro, and Tyrophagus putrescentiae) using quantitative PCR and 16S ribosomal RNA (rRNA) gene amplicon sequencing. The mite microbiomes had a complex structure dominated by the following bacterial taxa (OTUs): (a) intracellular symbionts of the genera Cardinium and Wolbachia in the mite bodies and eggs; (b) putative gut symbionts of the genera Solitalea, Bartonella, and Sodalis abundant in mite bodies and also present in mite feces; (c) feces-associated or environmental bacteria of the genera Bacillus, Staphylococcus, and Kocuria in the diet, mite bodies, and feces. Interestingly and counterintuitively, the differences between microbial communities in various conspecific mite populations were higher than those between different mite species. To explain some of these differences, we hypothesize that the intracellular bacterial symbionts can affect microbiome composition in mite bodies, causing differences between microbial profiles. Microbial profiles differed between various sample types, such as mite eggs, bodies, and the environment (spent growth medium-SPGM). Low bacterial abundances in eggs may result in stochastic effects in parent-offspring microbial transmission, except for the intracellular symbionts. Bacteria in the rearing diet had little effect on the microbial community structure in SPGM and mite bodies. Mite fitness was positively correlated with bacterial abundance in SPGM and negatively correlated with bacterial abundances in mite bodies. Our study demonstrates critical host-microbe interactions, affecting all stages of mite growth and leading to alteration of the environmental microbiome. Correlational evidence based on absolute quantitation of bacterial 16S rRNA gene copies suggests that mite-associated microorganisms are critical for modulating important pest properties of mites by altering population growth.
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Affiliation(s)
- Jan Hubert
- Crop Research Institute, Drnovska 507/73, CZ-161 06, Prague 6-Ruzyne, Czechia.
- Faculty of Agrobiology, Food and Natural Resources, Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences, Kamycka 129, CZ-165 21, Prague 6-Suchdol, Czechia.
| | - Marta Nesvorna
- Crop Research Institute, Drnovska 507/73, CZ-161 06, Prague 6-Ruzyne, Czechia
| | - Stefan J Green
- Genome Research Core, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Pavel B Klimov
- Department of Ecology and Evolutionary Biology, University of Michigan, 3600 Varsity Drive, Ann Arbor, MI, 48109, USA
- Institute of Biology, University of Tyumen, Pirogova 3, 625043, Tyumen, Russia
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12
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Erban T, Klimov P, Talacko P, Harant K, Hubert J. Proteogenomics of the house dust mite, Dermatophagoides farinae: Allergen repertoire, accurate allergen identification, isoforms, and sex-biased proteome differences. J Proteomics 2020; 210:103535. [DOI: 10.1016/j.jprot.2019.103535] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/28/2019] [Accepted: 09/26/2019] [Indexed: 12/15/2022]
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13
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Klimov P, Molva V, Nesvorna M, Pekar S, Shcherbachenko E, Erban T, Hubert J. Dynamics of the microbial community during growth of the house dust mite Dermatophagoides farinae in culture. FEMS Microbiol Ecol 2019; 95:5581497. [DOI: 10.1093/femsec/fiz153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 10/01/2019] [Indexed: 12/27/2022] Open
Abstract
ABSTRACTThe variation in house dust mite microbial communities is important because various microorganisms modulate the production of allergens by their mite hosts and/or contaminate immunotherapeutic extracts. Temporal changes in mite microbiomes and the mite culture environment occurring at different stages of mite culture development are particularly understudied in this system. Here, we analyzed the dynamics of microbial communities during the culture growth of Dermatophagoides farinae. Changes in microbiomes were related to three key variables: the mite population density, microbial microcosm respiration and concentration of guanine (the mite nitrogenous waste metabolite). Mite populations exhibited the following phases: exponential growth, plateau and exponential decline. The intracellular bacterium Cardinium and the yeast Saccharomyces cerevisiae prevailed in the internal mite microbiomes, and the bacterium Lactobacillus fermentum was prevalent in the mite diet. The reduction in the mite population size during the late phases of culture development was related to the changes in their microbial profiles: the intracellular bacterium Cardinium was replaced by Staphylococcus, Oceanobacillus and Virgibacillus, and S. cerevisiae was replaced by the antagonistic fungi Aspergillus penicillioides and Candida. Increases in the guanine content were positively correlated with increases in the Staphylococcus and A. penicillioides profiles in the culture environment. Our results show that the mite microbiome exhibits strong, dynamic alterations in its profiles across different mite culture growth stages.
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Affiliation(s)
- Pavel Klimov
- Department of Ecology and Evolutionary Biology, University of Michigan, 3600 Varsity Drive, Ann Arbor, MI 48109, USA
- Institute of Biology, University of Tyumen, Pirogova 3, 625043 Tyumen, Russia
| | - Vit Molva
- Crop Research Institute, Drnovska 507/73, CZ-16106 Prague 6-Ruzyne, Czechia
- Department of Parasitology, Faculty of Science, Charles University, Vinicna 1594/7, CZ-12800 Prague 2, Czechia
| | - Marta Nesvorna
- Crop Research Institute, Drnovska 507/73, CZ-16106 Prague 6-Ruzyne, Czechia
| | - Stano Pekar
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlarska 267/2, CZ-61137 Brno, Czechia
| | | | - Tomas Erban
- Crop Research Institute, Drnovska 507/73, CZ-16106 Prague 6-Ruzyne, Czechia
| | - Jan Hubert
- Crop Research Institute, Drnovska 507/73, CZ-16106 Prague 6-Ruzyne, Czechia
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14
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Santos da Silva E, Marques Ponte JC, Barbosa da Silva M, Silva Pinheiro C, Carvalho Pacheco LG, Ferreira F, Briza P, Alcantara-Neves NM. Proteomic Analysis Reveals Allergen Variability among Breeds of the Dust Mite Blomia tropicalis. Int Arch Allergy Immunol 2019; 180:159-172. [PMID: 31563904 DOI: 10.1159/000501964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/06/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The dawn of the "omics" technologies has changed allergy research, increasing the knowledge and identification of new allergens. However, these studies have been almost restricted to Dermatophagoides spp. Although Blomia tropicalis has long been established as a clinically important source of allergens, a thorough proteomic characterization is still lacking for this dust mite. OBJECTIVE To increase knowledge of B. tropicalis allergens through proteomic analysis. METHODS Eleven in-bred lineages of B. tropicalis were obtained from 11 unique different pregnant females. Their somatic extracts were analyzed and compared with a commercially available extract by liquid chromatography tandem mass spectrometry (LC-MS/MS). RESULTS Considerable differences in the protein expression profiles were found among the breeds, and most of them displayed higher expression levels of major allergens than the commercially available extract. Blo t 2 was the most prominent allergenic protein in the analyzed extracts. Six identified allergens and 14 isoforms have not yet been recognized by IUIS. Conversely, 3 previously recognized B. tropicalis allergens were not found. CONCLUSIONS The clear impact of inbreeding on allergen content shown by our study leads us to conclude that the quantification and/or identification of allergens from in-bred lines should be routinely considered for mite cultivation in order to select breeds with higher amounts of major allergens. In this sense, LC-MS/MS may be a useful method to achieve this quality control for research and commercial purposes.
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Affiliation(s)
- Eduardo Santos da Silva
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil.,Department of Biosciences, University of Salzburg, Salzburg, Austria.,Programa de Pós-Graduação em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Natal, Brazil
| | - João Carlos Marques Ponte
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil.,Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Márcia Barbosa da Silva
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil.,Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Carina Silva Pinheiro
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Luis Gustavo Carvalho Pacheco
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Fatima Ferreira
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Peter Briza
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Neuza Maria Alcantara-Neves
- Laboratório de Alergia e Acarologia, Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil, .,Programa de Pós-Graduação em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Natal, Brazil,
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15
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Acevedo N, Zakzuk J, Caraballo L. House Dust Mite Allergy Under Changing Environments. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2019; 11:450-469. [PMID: 31172715 PMCID: PMC6557771 DOI: 10.4168/aair.2019.11.4.450] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/12/2019] [Accepted: 03/15/2019] [Indexed: 12/11/2022]
Abstract
Environmental variations induced by industrialization and climate change partially explain the increase in prevalence and severity of allergic disease. One possible mechanism is the increase in allergen production leading to more exposure and sensitization in susceptible individuals. House dust mites (HDMs) are important sources of allergens inducing asthma and rhinitis, and experimentally they have been demonstrated to be very sensitive to microenvironment modifications; therefore, global or regional changes in temperature, humidity, air pollution or other environmental conditions could modify natural HDM growth, survival and allergen production. There is evidence that sensitization to HDMs has increased in some regions of the world, especially in the subtropical and tropical areas; however, the relationship of this increase with environmental changes is not so clear as has reported for pollen allergens. In this review, we address this point and explore the effects of current and predicted environmental changes on HDM growth, survival and allergen production, which could lead to immunoglobulin E (IgE) sensitization and allergic disease prevalence. We also assess the role of adjuvants of IgE responses, such as air pollution and helminth infections, and discuss the genetic and epigenetic aspects that could influence the adaptive process of humans to drastic and relatively recent environmental changes we are experiencing.
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Affiliation(s)
- Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia
| | - Josefina Zakzuk
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia.
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16
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Reginald K, Tan CL, Chen S, Yuen L, Goh SY, Chew FT. Characterization of Der f 22 - a paralogue of the major allergen Der f 2. Sci Rep 2018; 8:11743. [PMID: 30082894 PMCID: PMC6079044 DOI: 10.1038/s41598-018-30224-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/26/2018] [Indexed: 11/30/2022] Open
Abstract
We previously identified an expressed sequence tag clone, Der f 22, showing 41% amino acid identity to published Der f 2, and show that both genes are possible paralogues. The objective of this study was to characterize the genomic, proteomic and immunological functions Der f 22 and Der f 2. The full-length sequence of Der f 2 and Der f 22 coded for mature proteins of 129 and 135 amino acids respectively, both containing 6 cysteine residues. Phylogenetic analysis of known group 2 allergens and their homologues from our expressed sequence tag library showed that Der f 22 is a paralogue of Der f 2. Both Der f 2 and Der f 22 were single gene products with one intron. Both allergens showed specific IgE-binding to over 40% of the atopic patients, with limited of cross-reactivity. Both allergens were detected at the gut region of D. farinae by immunostaining. Der f 22 is an important allergen with significant IgE reactivity among the atopic population, and should be considered in the diagnostic panel and evaluated as future hypoallergen vaccine therapeutic target.
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Affiliation(s)
- Kavita Reginald
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, 47500, Selangor, Malaysia.,Department of Biological Sciences, Sunway University, Bandar Sunway, 47500, Selangor, Malaysia
| | - Chye Ling Tan
- Cell Cycle Control in Skin Epidermis, Institute of Medical Biology, A*STAR, 138648, Singapore, Singapore
| | - Simin Chen
- Allergy and Molecular Immunology Laboratory, Department of Biological Science, National University of Singapore, 117543, Singapore, Singapore
| | - Liling Yuen
- Allergy and Molecular Immunology Laboratory, Department of Biological Science, National University of Singapore, 117543, Singapore, Singapore
| | - Sock Yong Goh
- Allergy and Molecular Immunology Laboratory, Department of Biological Science, National University of Singapore, 117543, Singapore, Singapore
| | - Fook Tim Chew
- Allergy and Molecular Immunology Laboratory, Department of Biological Science, National University of Singapore, 117543, Singapore, Singapore.
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17
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Park KH, Lee J, Lee JY, Lee SC, Sim DW, Shin JU, Park CO, Lee JH, Lee KH, Jeong KY, Park JW. Sensitization to various minor house dust mite allergens is greater in patients with atopic dermatitis than in those with respiratory allergic disease. Clin Exp Allergy 2018; 48:1050-1058. [PMID: 29700921 DOI: 10.1111/cea.13164] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 02/11/2018] [Accepted: 03/14/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Various allergenic proteins are produced by house dust mites (HDM). However, the allergenicity and clinical implications of these allergens are unknown. OBJECTIVE The purpose of this study was to identify allergens in Dermatophagoides farinae and elucidate the sensitization profiles to these in Korean patients suffering from respiratory (allergic rhinitis and/or asthma) and atopic dermatitis symptoms. METHODS IgE reactivities in sera from 160 HDM allergy patients were analysed by one- and two-dimensional gel electrophoresis and immunoblotting. IgE-reactive components were identified by liquid chromatography-coupled electrospray ionization-tandem mass spectrometry. Nine recombinant mite allergens (Der f 1, Der f 2, Der f 10, Der f 11, Der f 13, Der f 14, Der f 30, Der f 32 and Der f Alt a 10) were produced, and the IgE reactivity in sera to each was determined by ELISAs. RESULTS Der f 1 and Der f 2 were recognized by IgE in serum samples from 88.1% and 78.1% of all patients, respectively. Patients with respiratory allergies were mainly sensitized to these major allergens, whereas patients with atopic dermatitis symptoms showed polysensitization to major and minor allergen components (including Der f 11, Der f 13, Der f 14, Der f 32 and Der f Alt a 10). CONCLUSIONS Patients with respiratory allergic disease sensitize to major allergen components of HDM. Those with atopic dermatitis were sensitized to a broader range of minor allergen components of HDM (Der f 11, Der f 13, Der f 14, Der f 32 and Der f Alt a 10).
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Affiliation(s)
- K H Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - J Lee
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - J-Y Lee
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - S C Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - D W Sim
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Division of Allergy, Asthma, and Clinical Immunology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - J U Shin
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - C O Park
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - J-H Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - K H Lee
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - K Y Jeong
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - J-W Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
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18
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Chaisri U, Tungtrongchitr A, Indrawattana N, Meechan P, Phurttikul W, Tasaniyananda N, Saelim N, Chaicumpa W, Sookrung N. Immunotherapeutic efficacy of liposome-encapsulated refined allergen vaccines against Dermatophagoides pteronyssinus allergy. PLoS One 2017; 12:e0188627. [PMID: 29182623 PMCID: PMC5705073 DOI: 10.1371/journal.pone.0188627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 11/10/2017] [Indexed: 12/17/2022] Open
Abstract
Allergen specific immunotherapy (AIT) can modulate the allergic response causing a long-term symptom subsidence/abolishment which leads to reduced drug use and prevention of new sensitization. AIT of house dust mite allergy (HDM) using the mite crude extract (CE) as the therapeutic agent is not only less effective than the AIT for many other allergens, but also frequently causes adverse effects during the treatment course. In this study, mouse model of Dermatophagoides pteronyssinus (Dp) allergy was invented for testing therapeutic efficacies of intranasally administered liposome (L) encapsulated vaccines made of single Dp major allergens (L-Der p 1, L-Der p 2), combined allergens (L-Der p 1 and Der p 2), and crude Dp extract (L-CE). The allergen sparing intranasal route was chosen as it is known that the effective cells induced at the nasal-associated lymphoid tissue can exert their activities at the lower respiratory tissue due to the common mucosal traffic. Liposome was chosen as the vaccine delivery vehicle and adjuvant as the micelles could reduce toxicity of the entrapped cargo. The Dp-CE allergic mice received eight doses of individual vaccines/placebo on alternate days. All vaccine formulations caused reduction of the Th2 response of the Dp allergic mice. However, only the vaccines made of single refined allergens induced expressions of immunosuppressive cytokines (TGF-β, IL-35 and/or IL-10) which are the imperative signatures of successful AIT. The data emphasize the superior therapeutic efficacy of single refined major allergen vaccines than the crude allergenic extract vaccine.
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Affiliation(s)
- Urai Chaisri
- Department of Tropical Pathology, Faculty of Tropical Medicine, Bangkok, Thailand
| | - Anchalee Tungtrongchitr
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nitaya Indrawattana
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Bangkok, Thailand
| | - Panisara Meechan
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Watchara Phurttikul
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Natt Tasaniyananda
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nawannaporn Saelim
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Wanpen Chaicumpa
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nitat Sookrung
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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19
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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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20
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Mite allergen extracts and clinical practice. Ann Allergy Asthma Immunol 2017; 118:249-256. [DOI: 10.1016/j.anai.2016.08.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 07/27/2016] [Accepted: 08/15/2016] [Indexed: 01/04/2023]
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21
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Demoly P, Okamoto Y, Yang WH, Devillier P, Bergmann KC. 300 IR HDM tablet: a sublingual immunotherapy tablet for the treatment of house dust mite-associated allergic rhinitis. Expert Rev Clin Immunol 2016; 12:1141-1151. [PMID: 27632814 DOI: 10.1080/1744666x.2016.1237288] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION The once-daily 300 index of reactivity (IR) house dust mite (HDM) tablet (Actair®; Stallergenes Greer, Antony, France/Shionogi & Co. Ltd., Osaka, Japan) is the first sublingual immunotherapy (SLIT) tablet to be approved for the treatment of HDM-induced allergic rhinitis. Areas covered: This drug profile reviews the current body of evidence on the efficacy, safety and tolerability of the 300 IR HDM tablet, its pharmacodynamics, and its role in clinical practice. Expert commentary: Data from its clinical development program demonstrate favorable efficacy and safety in adults and adolescents with HDM-induced allergic rhinitis, irrespective of mono- or polysensitization status, or the presence of comorbid mild asthma. The 300 IR HDM tablet is effective from as early as 2 months after treatment initiation, providing allergic symptom control and a reduction in the need for symptomatic medication, while improving health-related quality of life. Clinical efficacy is maintained for 1 year after treatment is stopped.
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Affiliation(s)
- Pascal Demoly
- a Department of Pulmonology - Division of Allergy , Hôpital Arnaud de Villeneuve, University Hospital of Montpellier, Montpellier and Sorbonne Universités , UPMC Paris 06, UMR-S 1136, IPLESP, Equipe EPAR, Paris , France
| | - Yoshitaka Okamoto
- b Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School of Medicine , Chiba University , Chiba , Japan
| | - William H Yang
- c Ottawa Allergy Research Corporation , University of Ottawa Medical School , Ottawa , Canada
| | - Philippe Devillier
- d UPRES EA 220, Université de Versailles Saint-Quentin , Department of Airway Diseases, Foch Hospital , Suresnes , France
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Hubert J, Kopecky J, Sagova-Mareckova M, Nesvorna M, Zurek L, Erban T. Assessment of Bacterial Communities in Thirteen Species of Laboratory-Cultured Domestic Mites (Acari: Acaridida). JOURNAL OF ECONOMIC ENTOMOLOGY 2016; 109:1887-96. [PMID: 27122496 DOI: 10.1093/jee/tow089] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 04/01/2016] [Indexed: 05/09/2023]
Abstract
House dust mites (HDMs) and stored-product mites (SPMs) of various species inhabit human homes and stored agricultural products. These mites are carriers and hosts of microorganisms that enable their survival. The bacteriome from 13 species of SPMs and HDMs was analyzed and compared by 454 pyrosequencing of partial 16S rRNA gene amplicons. Altogether 128,052 sequences were obtained and assigned to 71 operational taxonomic units (OTUs) at the 97% identity level. The number of sequences in the OTUs between species of mites ranged from 6 to 31 in the individual mite species. We did not find any significant effect of diet or evolutionary origin of mites or their interaction on the composition of the mite bacteriome. In mite species with low bacterial diversity, the bacterial communities were dominated by potential symbiotic or parasitic bacteria, i.e., Cardinium in Dermatophagoides farinae (Hughes, 1961) and Aeroglyphus robustus (Banks 1906) and the enteric bacteria Erwinia in Blomia tropicalis Van Bronswijk, de Cock & Oshima, 1974 and Xenorhabdus in Tyroborus lini (Oudemans, 1924). Among the bacterial species identified, Staphylococcus, Bacillus, Kocuria, Brevibacterium, Corynebacterium, and Brachybacterium likely serve as food sources for the mites. The domestic acaridid mites carried high numbers of various bacteria that are potential threats to human health. These results contribute to the general understanding of the ecology of mite adaptation to human-made habitats.
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Affiliation(s)
- Jan Hubert
- Crop Research Institute, Prague, Czechia (; ; ; ; ),
| | - Jan Kopecky
- Crop Research Institute, Prague, Czechia (; ; ; ; )
| | | | | | - Ludek Zurek
- Department of Diagnostic Medicine and Pathobiology, Kansas State University, KS
| | - Tomas Erban
- Crop Research Institute, Prague, Czechia (; ; ; ; )
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Batard T, Baron-Bodo V, Martelet A, Le Mignon M, Lemoine P, Jain K, Mariano S, Horiot S, Chabre H, Harwanegg C, Marquette CA, Corgier BP, Soh WT, Satitsuksanoa P, Jacquet A, Chew FT, Nony E, Moingeon P. Patterns of IgE sensitization in house dust mite-allergic patients: implications for allergen immunotherapy. Allergy 2016; 71:220-9. [PMID: 26485347 DOI: 10.1111/all.12796] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Understanding patterns of IgE sensitization in Dermatophagoides-allergic patients living in various geographical areas is necessary to design a product suitable for worldwide allergen immunotherapy (AIT). METHODS Using a HIFI Allergy customized microarray assay, IgEs specific for 12 purified allergens from Dermatophagoides pteronyssinus or D. farinae were assessed in sera from 1302 house dust mite (HDM)-allergic patients living in various areas. Comprehensive mass spectrometric (MS) analyses were conducted to characterize HDM extracts, as well as purified bodies and feces. RESULTS Patterns of IgE reactivity to HDM allergens are comparable in all cohorts of patients analyzed, encompassing adults and 5- to 17-year-old children, as well as American, Canadian, European, and Japanese patients. Overall, >70% and >80% of HDM-allergic patients are sensitized to group 1 and group 2 allergens, respectively, from D. pteronyssinus and/or D. farinae species. Furthermore, 20-47% of patients also have IgEs to allergens from groups 4, 5, 7, 13, 15, 21, and 23. All patients have IgEs to allergens present in mite bodies and feces. MS-based analyses confirmed the presence of mite allergens recorded by IUIS in D. pteronyssinus and D. farinae extracts, with groups 2, 8, 10, 11, 14, and 20 prominent in bodies and groups 1, 6, 18, and 23 well represented in feces. CONCLUSIONS Mite-specific AIT should rely upon a mixture of D. pteronyssinus and D. farinae extracts, manufactured from both feces and bodies. Such a combination is appropriate to treat children and adult Dermatophagoides-allergic patients from Asia, Europe, and North America.
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Affiliation(s)
- T. Batard
- Research and Development; Stallergenes; Antony France
| | - V. Baron-Bodo
- Research and Development; Stallergenes; Antony France
| | - A. Martelet
- Research and Development; Stallergenes; Antony France
| | - M. Le Mignon
- Research and Development; Stallergenes; Antony France
| | - P. Lemoine
- Research and Development; Stallergenes; Antony France
| | - K. Jain
- Research and Development; Stallergenes; Antony France
| | - S. Mariano
- Research and Development; Stallergenes; Antony France
| | - S. Horiot
- Research and Development; Stallergenes; Antony France
| | - H. Chabre
- Research and Development; Stallergenes; Antony France
| | - C. Harwanegg
- Thermo Fisher Scientific ImmunoDiagnostics/Phadia Austria GmbH; Vienna Austria
| | | | | | - W. T. Soh
- Chulalongkorn University; Bangkok Thailand
| | | | - A. Jacquet
- Chulalongkorn University; Bangkok Thailand
| | - F. T. Chew
- National University of Singapore; Singapore City Singapore
| | - E. Nony
- Research and Development; Stallergenes; Antony France
| | - P. Moingeon
- Research and Development; Stallergenes; Antony France
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Choopong J, Reamtong O, Sookrung N, Seesuay W, Indrawattana N, Sakolvaree Y, Chaicumpa W, Tungtrongchitr A. Proteome, Allergenome, and Novel Allergens of House Dust Mite, Dermatophagoides farinae. J Proteome Res 2016; 15:422-30. [PMID: 26754146 DOI: 10.1021/acs.jproteome.5b00663] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Dermatophagoides farinae mite is a predominant source of indoor allergens causing high incidence of allergy worldwide. People with different genetic background respond differently to the mite components, and thus the component-resolved diagnosis (CRD) is preferred to the conventional allergy test based on crude mite extract. In this study, proteome and culprit components in the D. farinae whole body extract that sensitized the allergic patients were studied by using SDS-PAGE (1DE) and 2DE-IgE immunoblotting followed by LC-MS/MS and database search for protein identification. From the 1DE, the mite extract revealed 105 proteins that could be classified into seven functionally different groups: allergens, structural components, enzymes, enzyme inhibitor, receptor proteins, transporters, and binding/regulatory/cell signaling proteins. From the 2DE, the mite extract produced 94 spots; 63 were bound by IgE in sera of 20 D. farinae allergic patients. One more protein that was not revealed by the 2DE and protein staining reacted with IgE in 2 allergic patients. Proteins in 40 spots could be identified as 35 different types. Three of them reacted to IgE of >50% of the allergic patients, and hence they are major allergens: tropomyosin or Der f 10 (75%), aconitate hydratase (70%), and one uncharacterized protein (55%). Aconitate hydratase is a novel D. farinae major allergen unraveled in this study. Several mite minor allergens that have never been previously reported are also identified. The data have clinical applications in the component-resolved diagnosis for tailor-designed allergen-specific immunotherapy.
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Affiliation(s)
- Jintarat Choopong
- Graduate Program in Microbiology, Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand.,Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
| | - Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University , Bangkok 10400, Thailand
| | - Nitat Sookrung
- Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
| | - Watee Seesuay
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
| | - Nitaya Indrawattana
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University , Bangkok 10400, Thailand
| | - Yuwaporn Sakolvaree
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
| | - Wanpen Chaicumpa
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
| | - Anchalee Tungtrongchitr
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok 10700, Thailand
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25
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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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26
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Vidal-Quist JC, Ortego F, Lombardero M, Castañera P, Hernández-Crespo P. Allergen expression in the European house dust mite Dermatophagoides pteronyssinus throughout development and response to environmental conditions. MEDICAL AND VETERINARY ENTOMOLOGY 2015; 29:137-146. [PMID: 25565338 DOI: 10.1111/mve.12102] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 08/05/2014] [Accepted: 09/23/2014] [Indexed: 06/04/2023]
Abstract
House dust mites are a major source of allergy worldwide. While diagnosis and treatment based on mite extracts have remarkably advanced, little information exists on the expression of allergens in mites. We have studied gene expression of eight Dermatophagoides pteronyssinus (Trouessart) (Acari: Pyroglyphidae) allergens (Der p 1, 2, 3, 4, 5, 7, 10 and 21). All allergens showed higher transcription in nymphs compared with larvae or adults, with the only exception of Der p 10. The transcription of Der p 4 and Der p 10, together with the transcription and protein ratios Der p 1 to Der p 2, were higher in males than in females. One-week exposure of mite cultures to 16 or 35 °C (versus 24 °C) or low RH (44% versus 76%) significantly influenced the allergen gene transcription profile. Our results demonstrate that allergen expression is quantitatively and/or qualitatively influenced by mite development and sex, as well as by the environment. We suggest that monitoring allergen gene expression may be a useful tool to assist the optimization of mite cultures in the production of standardized allergenic extracts for clinical use.
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Affiliation(s)
- J C Vidal-Quist
- Laboratorio de Interacción Planta-Insecto, Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas - CSIC, Madrid, Spain
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27
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Chesné J, Braza F, Chadeuf G, Mahay G, Cheminant MA, Loy J, Brouard S, Sauzeau V, Loirand G, Magnan A. Prime role of IL-17A in neutrophilia and airway smooth muscle contraction in a house dust mite–induced allergic asthma model. J Allergy Clin Immunol 2015; 135:1643-1643.e3. [DOI: 10.1016/j.jaci.2014.12.1872] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/09/2014] [Accepted: 12/11/2014] [Indexed: 10/24/2022]
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28
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Erban T, Hubert J. Two-dimensional gel proteomic analysis of Dermatophagoides farinae feces. EXPERIMENTAL & APPLIED ACAROLOGY 2015; 65:73-87. [PMID: 25100296 DOI: 10.1007/s10493-014-9848-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 07/24/2014] [Indexed: 06/03/2023]
Abstract
Dermatophagoides farinae fecal allergens are a major source of immunogens in home environments; however, as the source of mite fecal allergen is considered spent growth medium extract that can only mimic the pure fecal extract. In this study, we prepared and using proteomic methods analyzed a D. farinae fecal extract for the first time. The preparation approach used D. farinae feces that were produced within 8 weeks of initiating cultivation in minimized growth media. The feces were collected via adhesion to the tissue culture flask surfaces after removing the SGM and mites. This study contains in-depth proteomic mapping of the allergenic isoforms from the D. farinae fecal extract. Despite extensive analysis, MALDI TOF/TOF spectrometry showed that only six proteins/allergens, Der f1, Der f2, Der f3, Der f6, Der f15 and ferritin, originated from D. farinae. No other analyzed proteins were exactly assigned to Dermatophagoides or to similar invertebrate species by sequence similarity. The remaining proteins were assigned mostly to yeasts or cereals (originally dietary proteins); however, many of the proteins were not successfully identified in the current NCBInr. The numerous dietary proteins identified in the feces suggest that these proteins remained highly stable after passing through the gut. Isoforms of the allergens Der f1, Der f3 and Der f15 were identified in more MWs indicating the presence of zymogens and active-enzyme forms. The identified fecal allergens accumulate in the environment during the life of the mite and represent quantitatively greater amounts of mite immunogens than those that were missed in the 2D-E. The results contribute to our understanding of D. farinae digestive physiology with regard to the enzymes/proteins present in the feces.
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Affiliation(s)
- Tomas Erban
- Biologically Active Substances in Crop Protection, Laboratory of Proteomics, Crop Research Institute, Drnovska 507/73, 16106, Praha 6-Ruzyne, Czech Republic,
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29
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Moingeon P. Progress in the development of specific immunotherapies for house dust mite allergies. Expert Rev Vaccines 2014; 13:1463-73. [PMID: 25187166 DOI: 10.1586/14760584.2014.948861] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Allergen-specific immunotherapy is used to treat patients exposed and co-sensitized to the two common house dust mites, Dermatophagoides pteronyssinus and Dermatophagoides farinae. Based on seroepidemiological studies and a detailed characterization of mite allergens, an optimal immunotherapeutic product should associate extracts from the two Dermatophagoides species, and include both bodies and fecal particles. Both subcutaneous and sublingual immunotherapies performed with aqueous mite extracts are safe and efficacious in children and adults with mite-induced rhinitis and/or asthma. Double-blind placebo-controlled studies are conducted to further document the efficacy of immunotherapeutic products, with promising results that were obtained already with sublingual tablets. Current developments of second-generation products relying upon recombinant allergens and peptides are reviewed.
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Affiliation(s)
- Philippe Moingeon
- Stallergenes SA, Research and Pharmaceutical Development, 6 rue Alexis de Tocqueville, 92160 Antony, France
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30
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Abstract
As investigations into the innate immune responses that lead to allergic sensitization become better defined, there is a need to determine how allergens could interact with pattern recognition receptors that bind non-proteinaceous moieties. Many important allergens are not covalently bound to lipid or carbohydrate, but have structures belonging to lipid, glycan and glycolipid-binding families. These include ML-domain proteins, lipopolysaccharide-binding/cell permeability-increasing proteins, von Ebner gland lipocalins, salivary lipocalins/major urinary proteins, plant pathogenesis-related proteins PR-5 and -10, uteroglobins, non-specific lipid transfer proteins, large lipid transfer proteins and proteins with chitin and other carbohydrate-binding modules. The binding expected is overviewed with regard to importance of the allergens and their ability to elicit responses proposed from experimental models. The evidence compiled showing that allergens from the same source sensitize for different types of adaptive immune responses supports the concept that individual allergens within these sources have their own distinctive interactions with innate immunity.
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31
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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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Thomas WR. Molecular mimicry as the key to the dominance of the house dust mite allergen Der p 2. Expert Rev Clin Immunol 2014; 5:233-7. [DOI: 10.1586/eci.09.5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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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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34
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Casset A, Valenta R, Vrtala S. Allergen content and in vivo allergenic activity of house dust mite extracts. Int Arch Allergy Immunol 2013; 161:287-8. [PMID: 23548663 DOI: 10.1159/000347047] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 01/10/2013] [Indexed: 11/19/2022] Open
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35
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Baron-Bodo V, Batard T, Nguyen H, Fréreux M, Horiot S, Harwanegg C, Bergmann KC, de Beaumont O, Moingeon P. Absence of IgE neosensitization in house dust mite allergic patients following sublingual immunotherapy. Clin Exp Allergy 2013; 42:1510-8. [PMID: 22994348 DOI: 10.1111/j.1365-2222.2012.04044.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The impact of sublingual immunotherapy (SLIT) on IgE neosensitization remains to be evaluated in large cohorts of patients. OBJECTIVES The aim of this study was to assess the dynamics of antibody responses induced in patients with allergic rhinitis during a 12-month treatment with sublingual tablets of house dust mites (HDM) allergen extracts. METHODS Antibody responses were assessed in relationship with neosensitization and clinical benefit in sera from 509 European house dust mite-allergic patients before and after 1 year of daily sublingual immunotherapy, using tablets containing Dermatophagoides pteronyssinus plus D farinae extracts or placebo (ClinicalTrials.gov NCT00674700). Patients were followed for one additional year after treatment cessation. IgE and IgG4 antibodies specific for mite extracts or purified group 1, 2 and 10 allergens were assessed using Immulite, Immunocap and ISAC assays. RESULTS After 1 year of SLIT, mite-specific IgE and IgG4 titres increased by 1.5-fold and fourfold, respectively, in the active, but not in the placebo group. A strong IgG4 induction occurred in a subgroup (i.e. 10-15%) of "immunoreactive" patients, without any correlation with improvement in the average adjusted symptom score. Pre-existing IgE levels to purified mite allergens were not impacted during immunotherapy, and no de novo IgE responses to group 1, 2, 10 allergens were induced in patients who were unsensitized prior to immunotherapy. Similarly, no IgE neosensitization to wheat germ or yeast components used in the mite culture medium was observed. CONCLUSIONS AND CLINICAL RELEVANCE We document in a cohort of 509 patients followed over a 2-year period that SLIT does not induce any IgE neosensitization to allergens contained in the vaccine, such as groups 1, 2 as well as the food-related group 10 allergen. This observation further corroborates the safer safety profile of SLIT over SCIT.
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Affiliation(s)
- V Baron-Bodo
- Stallergenes SA, 6 rue Alexis de Tocqueville, 92183, Antony Cedex, France
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Weghofer M, Grote M, Resch Y, Casset A, Kneidinger M, Kopec J, Thomas WR, Fernández-Caldas E, Kabesch M, Ferrara R, Mari A, Purohit A, Pauli G, Horak F, Keller W, Valent P, Valenta R, Vrtala S. Identification of Der p 23, a peritrophin-like protein, as a new major Dermatophagoides pteronyssinus allergen associated with the peritrophic matrix of mite fecal pellets. THE JOURNAL OF IMMUNOLOGY 2013; 190:3059-67. [PMID: 23460742 DOI: 10.4049/jimmunol.1202288] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The house dust mite (HDM) Dermatophagoides pteronyssinus is one of most important allergen sources and a major elicitor of allergic asthma. We screened a D. pteronyssinus expression cDNA library with IgE Abs from HDM allergic patients. A cDNA coding for a new major allergen was isolated, which showed sequence homology to peritrophins, which contain chitin-binding domains and are part of the peritrophic matrix lining the gut of arthropods. The mature Der p 23 allergen was expressed in Escherichia coli as an 8-kDa protein without its hydrophobic leader sequence and purified to homogeneity. It reacted with IgE Abs from 74% of D. pteronyssinus allergic patients (n = 347) at levels comparable to the two major HDM allergens, Der p 1 and Der p 2. Thus, Der p 23 represents a new major D. pteronyssinus allergen. Furthermore, rDer p 23 exhibited high allergenic activity as demonstrated by upregulation of CD203c expression on basophils from D. pteronyssinus allergic patients. Immunogold electron microscopy localized the allergen in the peritrophic matrix lining the midgut of D. pteronyssinus as well as on the surface of the fecal pellets. Thus, we identified a new major D. pteronyssinus allergen as peritrophin-like protein. The high allergenic activity of Der p 23 and its frequent recognition as respiratory allergen may be explained by the fact that it becomes airborne and respirable through its association with mite feces. Der p 23 may be an essential component for diagnosis and specific immunotherapy of HDM allergy.
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Affiliation(s)
- Margit Weghofer
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, A-1090 Vienna, Austria
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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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38
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Fernández-Caldas E. Towards a More Complete Standardization of Mite Allergen Extracts. Int Arch Allergy Immunol 2013; 160:1-3. [DOI: 10.1159/000341271] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Moingeon P, Batard T, Nony E, Hrabina M, Frati F. Quality Control of House Dust Mite Extracts for Allergen Immunotherapy. Int Arch Allergy Immunol 2013; 161:285-6. [DOI: 10.1159/000347045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 01/10/2013] [Indexed: 11/19/2022] Open
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40
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Cui Y. Structural biology of mite allergens. Mol Biol Rep 2012; 40:681-6. [PMID: 23054022 DOI: 10.1007/s11033-012-2108-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 10/03/2012] [Indexed: 12/28/2022]
Abstract
Mite allergens contribute to a significant proportion of human allergic symptoms, including asthma and rhinitis. The development of therapies to treat and prevent these symptoms depends largely on our understanding of the properties of these allergens. Much effort has been devoted to determining the structure and organization of mite allergens, particularly of the house dust mites, toward understanding their activities and how they elicit immunological responses in humans. Here, we review the structural biology of the major allergens from two species of house dust mites, Dermatophagoides farinae and D. pteronyssinus, as well as allergens from a storage mite, Blomia tropicalis. The knowledge gained from the structural biology of these allergens will enable progress in producing novel, more effective treatments for mite allergies based on specific immunotherapy approaches.
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Affiliation(s)
- Yubao Cui
- Department of Laboratory Medicine, Yancheng Health Vocational & Technical College, Jiefangnan Road 263, Yancheng 224006, Jiangsu Province, People's Republic of China.
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41
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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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42
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Jeong KY, Park JW, Hong CS. House dust mite allergy in Korea: the most important inhalant allergen in current and future. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2012; 4:313-25. [PMID: 23115727 PMCID: PMC3479224 DOI: 10.4168/aair.2012.4.6.313] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 04/10/2012] [Accepted: 04/16/2012] [Indexed: 12/23/2022]
Abstract
The house-dust mite (HDM), commonly found in human dwellings, is an important source of inhalant and contact allergens. In this report, the importance of HDM allergy in Korea and the characteristics of allergens from dust mite are reviewed with an emphasis on investigations performed in Korea. In Korea, Dermatophagoides farinae is the dominant species of HDM, followed by D. pteronyssinus. Tyrophagus putrescentiae is also found in Korea, but its role in respiratory allergic disease in Korea is controversial. The relatively low densities of mite populations and concentrations of mite major allergens in dust samples from Korean homes, compared to westernized countries, are thought to reflect not only different climatic conditions, but also cultural differences, such as the use of 'ondol' under-floor heating systems in Korean houses. HDM are found in more than 90% of Korean houses, and the level of exposure to HDM is clinically significant. About 40%-60% of Korean patients suffering from respiratory allergies, and more than 40% of patients suffering from atopic dermatitis, are sensitized to HDM. Mite allergens can be summarized according to their inherent auto-adjuvant activities and/or their binding affinities to the adjuvant-like substances: proteolytic enzymes, lipid binding proteins, chitin binding proteins, and allergens not associated with adjuvant-like activity. In general, allergens with a strong adjuvant-like activity or adjuvant-binding activity elicit potent IgE reactivity. In Korea, Der f 2 is the most potent allergen, followed by Der f 1. Immune responses are modulated by the properties of the allergen itself and by the adjuvant-like substances that are concomitantly administered with the antigens. Characterization of allergenic molecules and elucidation of mechanisms by which adjuvant-like molecules modulate allergic reactions, not only in Korea but also worldwide, will provide valuable information on allergic diseases, and are necessary for the development of diagnostic tools and therapeutic strategies.
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Affiliation(s)
- Kyoung Yong Jeong
- Department of Internal Medicine and Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
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Frati F, Incorvaia C, David M, Scurati S, Seta S, Padua G, Cattaneo E, Cavaliere C, Di Rienzo A, Dell'Albani I, Puccinelli P. Requirements for acquiring a high-quality house dust mite extract for allergen immunotherapy. DRUG DESIGN DEVELOPMENT AND THERAPY 2012; 6:117-23. [PMID: 22654506 PMCID: PMC3363974 DOI: 10.2147/dddt.s30908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The house dust mite is a major cause of respiratory allergy worldwide. The management of mite allergy is based on avoidance measures, drug treatment, and allergen immunotherapy, but only allergen immunotherapy is able to modify the natural history of the disease. Injectable subcutaneous immunotherapy was introduced a century ago, while sublingual immunotherapy was proposed in the 1980s and emerged in the ensuing years as an effective and safe option to subcutaneous immunotherapy. However, the quality of the extracts to be used in allergen immunotherapy is crucial for the success of treatment. The mite extract for sublingual immunotherapy known as Staloral 300 was developed to offer optimal characteristics concerning the mite culture medium, standardization, and allergen dose. Double-blind, placebo-controlled trials with Staloral 300 have provided a substantial part of the clinical evidence analyzed in a meta-analysis of the efficacy of allergen immunotherapy in mite-induced rhinitis and asthma. Safety and tolerability are very good, mild local reactions in the mouth being the most common side effect. This makes it feasible to carry out sublingual immunotherapy for the 3–5-year duration needed to achieve long-lasting tolerance to the specific allergen. The performance of Staloral 300 may provide optimal conditions for an effective and safe sublingual immunotherapy in patients with mite-induced respiratory allergy.
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Affiliation(s)
- Franco Frati
- Medical and Scientific and Regulatory Department, Stallergenes, Milan, Italy
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44
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Bordas-Le Floch V, Bussières L, Airouche S, Lautrette A, Bouley J, Berjont N, Horiot S, Huet A, Jain K, Lemoine P, Chabre H, Batard T, Mascarell L, Baron-Bodo V, Tourdot S, Nony E, Moingeon P. Expression and characterization of natural-like recombinant Der p 2 for sublingual immunotherapy. Int Arch Allergy Immunol 2012; 158:157-67. [PMID: 22286395 DOI: 10.1159/000331143] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 07/25/2011] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Recombinant allergens with a native conformation represent an alternative to natural extracts for immunotherapy and diagnostic purposes. METHODS We produced the Der p 2 mite allergen in Pichia pastoris and Escherichia coli. After purification by cation exchange chromatography, recombinant molecules were compared to their natural counterpart based upon structural (disulfide bonds, secondary structure, thermal stability) and immunological properties (antibody reactivity, basophil and T cell activation, tolerance induction in a murine sublingual immunotherapy model). RESULTS The Der p 2.0101 isoform was confirmed to be prevalent in Dermatophagoides pteronyssinus extracts. It was then produced as a secreted molecule in P. pastoris or refolded from E. coli inclusion bodies. The yeast-expressed rDer p 2 molecule exhibits a natural-like disulfide bridge distribution and secondary structure, whereas the E. coli-derived rDer p 2 presents some heterogeneity in cysteine bonds and a lower stability following thermal stress. The two recombinant as well as natural Der p 2 molecules exhibit comparable IgE recognition and activate basophil and CD4+ T cells. Sublingual immunotherapy of nDer p 2- sensitized mice using either one of the rDer p 2 molecules efficiently decreases airway hyperresponsiveness as well as Th2 responses. CONCLUSIONS Natural and recombinant Der p 2 molecules produced in P. pastoris and E. coli exhibit comparable immunological properties despite distinct structural features. Natural-like cysteine pairing is a critical parameter to identify stable, well-folded and homogenous proteins appropriate for immunotherapy and diagnostic purposes.
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45
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Avula-Poola S, Morgan MS, Arlian LG. Diet Influences Growth Rates and Allergen and Endotoxin Contents of Cultured Dermatophagoides farinae and Dermatophagoides pteronyssinus House Dust Mites. Int Arch Allergy Immunol 2012; 159:226-34. [DOI: 10.1159/000336026] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 12/19/2011] [Indexed: 11/19/2022] Open
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46
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Moingeon P, Mascarell L. Induction of tolerance via the sublingual route: mechanisms and applications. Clin Dev Immunol 2011; 2012:623474. [PMID: 22110534 PMCID: PMC3216342 DOI: 10.1155/2012/623474] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Accepted: 09/23/2011] [Indexed: 12/16/2022]
Abstract
The clinical efficacy of sublingual immunotherapy (SLIT) with natural allergen extracts has been established in IgE-dependent respiratory allergies to grass or tree pollens, as well as house dust mites. Sublingual vaccines have an excellent safety record, documented with approximately 2 billion doses administered, as of today, in humans. The oral immune system comprises various antigen-presenting cells, including Langerhans cells, as well as myeloid and plasmacytoid dendritic cells (DCs) with a distinct localisation in the mucosa, along the lamina propria and in subepithelial tissues, respectively. In the absence of danger signals, all these DC subsets are tolerogenic in that they support the differentiation of Th1- and IL10-producing regulatory CD4(+) T cells. Oral tissues contain limited numbers of mast cells and eosinophils, mostly located in submucosal areas, thereby explaining the good safety profile of SLIT. Resident oral Th1, Th2, and Th17 CD4(+) T cells are located along the lamina propria, likely representing a defence mechanism against infectious pathogens. Second-generation sublingual vaccines are being developed, based upon recombinant allergens expressed in a native conformation, possibly formulated with Th1/T reg adjuvants and/or mucoadhesive particulate vector systems specifically designed to target oral dendritic cells.
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Affiliation(s)
- Philippe Moingeon
- Département Scientifique, Stallergènes SA, 6 rue Alexis de Tocqueville, 92160 Antony, France.
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47
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Kidon MI, Chiang WC, Liew WK, Ong TC, Tiong YS, Wong KN, Angus AC, Ong ST, Gao YF, Reginald K, Bi XZ, Shang HS, Chew FT. Mite component-specific IgE repertoire and phenotypes of allergic disease in childhood: the tropical perspective. Pediatr Allergy Immunol 2011; 22:202-10. [PMID: 21332797 DOI: 10.1111/j.1399-3038.2010.01094.x] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sensitization to perennial aeroallergens correlates with the risk of persistent asthma (AS) in children. In tropical Singapore, multiple codominant species of mites abound in the indoor environment, and preferential species-specific sensitization has been associated with different phenotypes of allergic disease. We investigated the pattern of mite component-specific IgE (mcsIgE) in children with different phenotypes of clinical allergic disease in an environment with multiple mite species exposure. A prospective evaluation of newly diagnosed patients with clinical diagnosis of allergic rhinitis (AR), atopic dermatitis (AD), or AS and sensitization to one or more aeroallergens were performed. Sera were tested for specific IgE against an extensive panel of Dermatophagoides pteronyssinus and Blomia tropicalis allergens. A total of 253 children were included, mean age 7.3 yr, 79% fulfilled criteria for AR, 46% AS, 71% AD, and 31% for all three. Sensitization to one or both mites was observed in 91% of children, 89% were sensitized to D. pteronyssinus, and 70% to B. tropicalis. The most common mite allergens recognized by these atopic children were Der p 1 (64%), Der p 2 (71%), Blo t 5 (45%), Blo t 7 (44%), and Blo t 21 (56%). Specific IgE responses to an increased number of distinct mite allergens correlated with the complexity of the allergic phenotype. In multivariate analysis, an increased risk for the multi-systemic phenotype (AR + AS + AD) was associated with sensitization to an increased repertoire of mite components (three or more) (OR 4.3, 95% CI 2.1-8.8, p = 0.001) and a positive parental history of AS (OR 2.4, 95% CI 1.2-2.9, p = 0.013). A highly pleiomorphic IgE response to the prevalent indoor mites is associated with the presence of a multi-systemic allergic phenotype in childhood in a tropical environment.
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Affiliation(s)
- Mona I Kidon
- Allergy and Immunology Unit, Chaim Sheba Medical Center, Tel Hashomer, Israel.
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48
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Burazer L, Milovanovic K, Milovanovic M, Vuckovic O, Velickovic TC, Gavrovic-Jankulovic M. Impact of Dermatophagoides pteronyssinus mite body raw material on house dust mite allergy diagnosis in a Serbian population. MEDICAL AND VETERINARY ENTOMOLOGY 2011; 25:77-83. [PMID: 20819152 DOI: 10.1111/j.1365-2915.2010.00906.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
House dust mite (HDM) allergy has different clinical and immunological patterns in different geographic regions. The impact of raw material of commercial Dermatophadoides pteronyssinus (Acari: Pyroglyphidae) mite bodies on the quality of allergen extracts for allergy diagnosis in the Serbian population has not been previously evaluated. House dust mite bodies obtained from manufacturers in Europe, South America and Australia were used in the preparation of allergen extracts for in vivo diagnosis and serological analysis in a group of 14 HDM-allergic adults. In the group of mite-allergic patients, there was no statistically significant difference in skin test reactivity (Wilcoxon matched pairs test) among the three HDM body extract preparations. In a CAP inhibition assay, two extracts (A and C) achieved maximum inhibition of >90%, whereas extract B demonstrated a different inhibition slope and lower inhibition potential (80%). However, a remarkable difference in immunoglobulin E reactivity using Western blot analysis with individual patients' sera was observed in one of the preparations (extract B). These findings emphasize the need for the careful selection of starting material for the preparation of HDM diagnostic reagents intended for use in patients from geographically distinct regions as these preparations can have implications on the selection criteria for patient-tailored immunotherapy of HDM allergy.
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Affiliation(s)
- L Burazer
- Department of Allergy, Torlak Institute of Virology, Vaccines and Sera, Belgrade, Serbia
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49
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Yella L, Morgan MS, Arlian LG. Population growth and allergen accumulation of Dermatophagoides pteronyssinus cultured at 20 and 25 °C. EXPERIMENTAL & APPLIED ACAROLOGY 2011; 53:103-119. [PMID: 20838884 DOI: 10.1007/s10493-010-9394-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Accepted: 08/21/2010] [Indexed: 05/29/2023]
Abstract
The house dust mites, Dermatophagoides pteronyssinus and D. farinae are cultured commercially and in research laboratories and material is harvested from these cultures to make extracts that are used for diagnosis, immunotherapy and research. Temperature and other climatic conditions can influence population growth rates, dynamics of allergen production, and the associated endotoxin, enzyme and protein levels of the mite material harvested from these cultures. Here we determined how temperature affected these parameters. Dermatophagoides pteronyssinus was cultured at 20 and 25 °C at 75% relative humidity, and at 2-week intervals the concentrations of mites, Der p 1 and Der p 2 allergens, endotoxin, and selected enzymes were determined. Mite density increased exponentially but growth rate and final population density were greater at 25 °C compared to 20 °C. The combined allergen (Der p 1 + Der p 2) concentrations accumulated in the cultures at about the same rate at both temperatures. However, individual Der p 1 and Der p 2 accumulation rates varied independently at the two temperatures. Der p 1 accumulated faster at 20 °C whereas Der p 2 accumulated faster at 25 °C. The amount of Der p 1 in whole cultures was greater than the amount of Der p 2. The concentration of allergen for washed mites harvested from the cultures was much less than for the whole cultures. Our study demonstrated that temperature is an important factor in population growth and the dynamics of allergen production in cultured mites.
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Affiliation(s)
- Lakshmi Yella
- Department of Biological Sciences, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA
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50
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Cui YB, Cai HX, Zhou Y, Gao CX, Shi WH, Yu M, Li L. Cloning, expression, and characterization of Der f 7, an allergen of Dermatophagoides farinae from China. JOURNAL OF MEDICAL ENTOMOLOGY 2010; 47:868-876. [PMID: 20939383 DOI: 10.1603/me09180] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A full-length cDNA encoding house dust mite allergen Der f 7 from Dermatophagoides farina (Acari: Pyroglyphidae) from China was cloned, sequenced, and successfully expressed. A reference sequence (GenBank accession AY283292) was used to design polymerase chain reaction primers. Analysis revealed eight mismatched nucleotides in five Der f 7 cDNA clones, and the projected amino acid sequence contained six incompatible residues. These results suggest that the sequence of Der f 7 may be polymorphic. Further bioinformatic analysis revealed that the mature Der f 7 allergen had a molecular mass of approximately 21.88 kDa and a theoretical isoelectric point of 4.90. Der f 7 protein secondary structure was composed of a helix (56.63%), extended strand (5.10%), and random coil (38.27%). Group 7 allergens are present in Pyroglyphidae, Acaridae, and Glycyphagidae families, and homology analysis revealed a 86% similarity between Der f 7 and Der p 7. Furthermore, a phylogenetic tree constructed of group 7 allergens from different mite species revealed that Der f 7 and Der p 7 clustered with 100% bootstrap support. Bioinformatics-driven characterization of Der f 7 allergen as conducted in this study may contribute to diagnostic and therapeutic applications for dust mite allergies.
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Affiliation(s)
- Yu-bao Cui
- Department of Pathogenic Biology, Yancheng Health Vocational and Technical College, Jiangsu Yancheng 224006, PR China
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