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Letrán A, García I, Espinazo-Romeu M, Moreno-Aguilar C, Moreno F. Cut-off value of D. pteronyssinus specific IgE in double negative patients Der p 1 and Der p 2 and its clinical repercussion. Sci Rep 2021; 11:23585. [PMID: 34880341 PMCID: PMC8655041 DOI: 10.1038/s41598-021-03005-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/10/2021] [Indexed: 11/09/2022] Open
Abstract
Accessibility to more precise diagnostic techniques such as component resolved diagnostics (CRD), provides us with an important advance in diagnostic aspects as well as treatment. The subject of this study aims to better understand the profiles of sensitization to Der p 1, Der p 2 and Der p 23 and to know to what extent their use could help us in optimizing the decision-making for their treatment with Specific Immunotherapy. Cross-sectional study of subjects older than 5 years, diagnosed with allergy to HDM using skin prick test and sIgE, with symptoms of rhinitis and/or asthma. Total and specific IgE was determined to D. pteronyssinus, nDer p 1, rDer p 2 and rDer p 23 using ImmunoCAP. 240 patients were recruited (97.1% rhinitis and 46.25% rhinitis and asthma). Four different phenotypes were observed: positive or negative for sIgE nDer p 1 and/or IgE rDer p 2. 17% of these patients sIgE were double negative for Der p 1 and Der p 2 (increasing with age and with significantly lower sIgE levels than the rest of the groups). Using ROC curves, value less than 2.18 KUA/L for D. pteronyssinus sIgE gave us a sensitivity and specificity of 0.882 and 0.985, respectively, to double negative IgE nDer p 1 and IgE rDer p 2 group. Despite positive SPT and sIgE to D. pteronyssinus, 17% of the studied population is IgE nDer p 1 and IgE rDer p 2 double negative, with a cut-off value of 2.18 KU/L, which is very relevant for taking of decisions in prescription of AIT. The double positive population sIgE nDer p 1 and IgE rDer p 2 is associated with asthma compared to the other groups and this does not seem to be influenced by IgE rDer p 23.
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Affiliation(s)
- Antonio Letrán
- Servicio de Alergología e Inmunología, CM ASISA Lobatón, Cádiz, Spain
| | | | - Marisa Espinazo-Romeu
- GC01 Laboratorio de Inmunología y Alergia, Maimonides Biomedical Research Institute of Cordoba (IMIBIC)/Reina Sofia University Hospital/University of Cordoba, Avenida Menéndez Pidal, S/N, 14004, Córdoba, Spain.
- National Network ARADyAL, Health Institute Carlos III, Madrid, Spain.
| | - Carmen Moreno-Aguilar
- GC01 Laboratorio de Inmunología y Alergia, Maimonides Biomedical Research Institute of Cordoba (IMIBIC)/Reina Sofia University Hospital/University of Cordoba, Avenida Menéndez Pidal, S/N, 14004, Córdoba, Spain
- National Network ARADyAL, Health Institute Carlos III, Madrid, Spain
- Department of Immunology and Allergy, Reina Sofia University Hospital, Cordoba, Spain
| | - Francisco Moreno
- Servicio de Alergología e Inmunología, CM ASISA Lobatón, Cádiz, Spain
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Hong J, Lee PH, Lee YG, Leikauf GD, Jang AS. Augmented angiogenic transcription factor, SOX18, is associated with asthma exacerbation. J Asthma 2021; 58:1143-1154. [PMID: 32419535 DOI: 10.1080/02770903.2020.1771727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/07/2020] [Accepted: 05/16/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND Asthma characterized by airway hyperresponsiveness, inflammation, fibrosis, and angiogenesis. SRY-related HMG-box 18 (SOX18) is an important transcription factor involved in angiogenesis, tissue injury, wound-healing, and in embryonic cardiovascular and lymphatic vessels development. The role of angiogenic transcription factors, SOX18 and the related, prospero homeobox 1 (PROX1) and chicken ovalbumin upstream promoter transcription factor II (COUP-TFII), in asthma has had limited study. OBJECTIVE In this study, we aimed to elucidate the role of SOX18 in the pathogenesis of bronchial asthma. METHODS Plasma SOX18 protein was measured in control subjects, and subject with stable or exacerbated asthma. SOX18, PROX1, and COUP-TFII protein was measured by western blot, and immunohistochemistry in a murine model of ovalbumin-induced allergic asthma (OVA). SOX18, PROX1, and COUP-TFII protein was measured in lung human microvascular endothelial cells (HMVEC-L) and normal human bronchial epithelial (NHBE) cells treated with house dust mite (Der p1). RESULTS Plasma SOX18 tended to be higher in subject with asthma compared to control subjects and increased more during exacerbation as compared to stable disease. In mice, OVA challenge lead to increased lung SOX18, PROX1, COUP-TFII, mucous gland hyperplasia and submucosal collagen. In NHBE cells, SOX18, PROX1 and COUP-TFII increased following Der p1 treatment. SOX18 protein increased in HMVEC-L following Der p1 treatment. CONCLUSION These results suggest that SOX18 may be involved in asthma pathogenesis and be associated with asthma exacerbation.
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Affiliation(s)
- Jisu Hong
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Gyeonggi-do, Republic of Korea
| | - Pureun-Haneul Lee
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Gyeonggi-do, Republic of Korea
| | - Yun-Gi Lee
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Gyeonggi-do, Republic of Korea
| | - George D Leikauf
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - An-Soo Jang
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Gyeonggi-do, Republic of Korea
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Zou X, Hu H, Huang Z, Liao C, Huang L, Luo W, Jiang M, Sun B. Serum levels of specific immunoglobulin E to Dermatophagoides pteronyssinus allergen components in patients with allergic rhinitis or/and asthma. Allergy Asthma Proc 2021; 42:e40-e46. [PMID: 33404400 DOI: 10.2500/aap.2021.42.200105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background: House-dust mites (HDM) allergen is one of the most important allergens in southern China; however, studies on the Dermatophagoides pteronyssinus components are relatively lacking. Objective: This study analyzed the molecular components of D. pteronyssinus in patients with allergic asthma (AS) and/or allergic rhinitis (AR) sensitized to D. pteronyssinus, and aimed to improve HDM immunotherapy in southern China. Methods: Allergen component-resolved diagnosis detection technology was used to detect the serum levels of specific immunoglobulin E (sIgE) to D. pteronyssinus allergen components (Der p 1, 2, 3, 5, 7, 10, and 23) in patients who were sensitized to D. pteronyssinus and with AR (n = 106), AS (n = 144), or AR combined with AS (n = 134). Results: The highest positive rates of D. pteronyssinus components were Der p 1 (94.8%), followed by Der p 2 (77.6%), Der p 23 (62.5%), Der p 7 (34.6%), Der p 5 (17.7%), Der p 10 (12.2%), and Der p 3 (2.6%). Patients with AR+AS had the highest positive rates to Der p 2 (85.8%), Der p 23 (62.7%), Der p 7 (40.3%), Der p 5 (25.0%), and Der p 10 (16.4%). Der p 1 had the highest positive rate in patients with AR (95.3%). The Der p 3 positive rate in patients with AS (6.0%) was higher than that in patients with AR (0.0%, χ² = 6.872, p < 0.05) and patients with AR+AS (0.7%, χ² = 6.063, p < 0.05) Among the patients with AR+AS, 19.1% were co-sensitized to Der p 1, Der p 2, Der p 23, and Der p 7. Interestingly, only one patient with AR was exclusively sensitized to Der p 23. An optimal scale analysis showed that Der p 5, Der p 23, and Der p 7 had strong connection (Cronbach α = 93.7%). Conclusion: Der p 1 and Der p 2 were the main sensitization components of D. pteronyssinus, and patients with AS+AR had the highest positive rate for five of seven D. pteronyssinus allergen components. This research can provide suggestions for personalized HDM-specific immunotherapy in southern China.
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Wu Y, Ma L, Zhuang Z, Cai S, Zhao Z, Zhou L, Zhang J, Wang PH, Zhao J, Cui J. Main protease of SARS-CoV-2 serves as a bifunctional molecule in restricting type I interferon antiviral signaling. Signal Transduct Target Ther 2020; 5:221. [PMID: 33024073 PMCID: PMC7537955 DOI: 10.1038/s41392-020-00332-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/21/2020] [Accepted: 09/14/2020] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yaoxing Wu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China
| | - Ling Ma
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China
| | - Zhen Zhuang
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, 510182, Guangzhou, Guangdong, China
| | - Sihui Cai
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China
| | - Zhiyao Zhao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China
| | - Lingli Zhou
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China
| | - Jing Zhang
- Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Pei-Hui Wang
- Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Jincun Zhao
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, 510182, Guangzhou, Guangdong, China.
| | - Jun Cui
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, Guangdong, China.
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Panda PK, Arul MN, Patel P, Verma SK, Luo W, Rubahn HG, Mishra YK, Suar M, Ahuja R. Structure-based drug designing and immunoinformatics approach for SARS-CoV-2. Sci Adv 2020; 6:eabb8097. [PMID: 32691011 PMCID: PMC7319274 DOI: 10.1126/sciadv.abb8097] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/27/2020] [Indexed: 05/19/2023]
Abstract
The prevalence of respiratory illness caused by the novel SARS-CoV-2 virus associated with multiple organ failures is spreading rapidly because of its contagious human-to-human transmission and inadequate globalhealth care systems. Pharmaceutical repurposing, an effective drug development technique using existing drugs, could shorten development time and reduce costs compared to those of de novo drug discovery. We carried out virtual screening of antiviral compounds targeting the spike glycoprotein (S), main protease (Mpro), and the SARS-CoV-2 receptor binding domain (RBD)-angiotensin-converting enzyme 2 (ACE2) complex of SARS-CoV-2. PC786, an antiviral polymerase inhibitor, showed enhanced binding affinity to all the targets. Furthermore, the postfusion conformation of the trimeric S protein RBD with ACE2 revealed conformational changes associated with PC786 drug binding. Exploiting immunoinformatics to identify T cell and B cell epitopes could guide future experimental studies with a higher probability of discovering appropriate vaccine candidates with fewer experiments and higher reliability.
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MESH Headings
- Angiotensin-Converting Enzyme 2
- Antiviral Agents/pharmacology
- Benzamides
- Benzazepines
- Betacoronavirus/drug effects
- Betacoronavirus/immunology
- Betacoronavirus/metabolism
- Binding Sites
- COVID-19
- Coronavirus 3C Proteases
- Coronavirus Infections/immunology
- Coronavirus Infections/prevention & control
- Coronavirus Infections/virology
- Cysteine Endopeptidases/chemistry
- Cysteine Endopeptidases/immunology
- Cysteine Endopeptidases/metabolism
- Drug Design
- Drug Evaluation, Preclinical
- Epitopes, B-Lymphocyte/drug effects
- Epitopes, B-Lymphocyte/immunology
- Epitopes, T-Lymphocyte/drug effects
- Epitopes, T-Lymphocyte/immunology
- Humans
- Molecular Docking Simulation
- Pandemics/prevention & control
- Peptidyl-Dipeptidase A/chemistry
- Peptidyl-Dipeptidase A/immunology
- Peptidyl-Dipeptidase A/metabolism
- Pneumonia, Viral/immunology
- Pneumonia, Viral/prevention & control
- Pneumonia, Viral/virology
- Protein Binding
- Protein Conformation
- Protein Domains
- Protein Interaction Domains and Motifs
- SARS-CoV-2
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/metabolism
- Spiro Compounds/pharmacology
- Viral Nonstructural Proteins/chemistry
- Viral Nonstructural Proteins/immunology
- Viral Nonstructural Proteins/metabolism
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Affiliation(s)
- Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Murugan Natarajan Arul
- Department of Theoretical Chemistry and Biology, Royal Institute of Technology (KTH), AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Paritosh Patel
- School of Biotechnology, KIIT University, Bhubaneswar 751024, India
| | - Suresh K. Verma
- School of Biotechnology, KIIT University, Bhubaneswar 751024, India
| | - Wei Luo
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | | | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, DK-6400 Sønderborg, Denmark
| | - Mrutyunjay Suar
- School of Biotechnology, KIIT University, Bhubaneswar 751024, India
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
- Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology (KTH), SE-100 44 Stockholm, Sweden
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Saarinen NVV, Stone VM, Hankaniemi MM, Mazur MA, Vuorinen T, Flodström-Tullberg M, Hyöty H, Hytönen VP, Laitinen OH. Antibody Responses against Enterovirus Proteases are Potential Markers for an Acute Infection. Viruses 2020; 12:E78. [PMID: 31936473 PMCID: PMC7020046 DOI: 10.3390/v12010078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/02/2020] [Accepted: 01/07/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Enteroviruses are a group of common non-enveloped RNA viruses that cause symptoms ranging from mild respiratory infections to paralysis. Due to the abundance of enterovirus infections it is hard to distinguish between on-going and previous infections using immunological assays unless the IgM fraction is studied. METHODS In this study we show using Indirect ELISA and capture IgM ELISA that an IgG antibody response against the nonstructural enteroviral proteins 2A and 3C can be used to distinguish between IgM positive (n = 22) and IgM negative (n = 20) human patients with 83% accuracy and a diagnostic odds ratio of 30. Using a mouse model, we establish that the antibody response to the proteases is short-lived compared to the antibody response to the structural proteins in. As such, the protease antibody response serves as a potential marker for an acute infection. CONCLUSIONS Antibody responses against enterovirus proteases are shorter-lived than against structural proteins and can differentiate between IgM positive and negative patients, and therefore they are a potential marker for acute infections.
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Affiliation(s)
- Niila V. V. Saarinen
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
| | - Virginia M. Stone
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
- Karolinska Institutet, The Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska University Hospital, 14152 Stockholm, Sweden;
| | - Minna M. Hankaniemi
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
| | - Magdalena A. Mazur
- Karolinska Institutet, The Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska University Hospital, 14152 Stockholm, Sweden;
| | - Tytti Vuorinen
- Turku University Hospital, Clinical Microbiology and University of Turku, Institute of Biomedicine, 20520 Turku, Finland;
| | - Malin Flodström-Tullberg
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
- Karolinska Institutet, The Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska University Hospital, 14152 Stockholm, Sweden;
| | - Heikki Hyöty
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
| | - Vesa P. Hytönen
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
| | - Olli H. Laitinen
- Faculty of Medicine and Health Technology, Tampere University, FI-33014 Tampere, Finland; (N.V.V.S.); (V.M.S.); (M.M.H.); (M.F.-T.); (H.H.); (V.P.H.)
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Moghtaderi M, Ashraf MA, Teshnizi SH, Nabavizadeh H, Farjadian S, Fereidouni M. The level of allergens in dust samples collected from selected schools in Shiraz, Iran and its asthma-risk implications. Allergol Immunopathol (Madr) 2020; 48:90-94. [PMID: 31477397 DOI: 10.1016/j.aller.2019.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/05/2019] [Accepted: 05/10/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND Both home and school are important places where children are exposed to various indoor allergens. This study aimed to identify the profile of indoor allergens in schools and its impact on asthma development. METHODS A total of 104 classrooms from 52 schools were selected for dust collection during the fall of 2017. The levels of indoor allergens including dust mite (Der f1, Der p1), cat (Fel d1), cockroach (Bla g1) and mouse (Mus m1) were measured by enzyme linked immunosorbent assay (ELISA). The diagnosis of asthma was made in all students of the selected classes by the allergist. The collected data were analyzed using SPSS version 21.0. RESULTS Out of 2816 students in the selected classes, 180 students were involved with asthma. Students were mostly exposed to Bla g1 (83.1%), followed by Der f1 (51.5%), Mus m 1 (45.5%), Der p1 (8.9%) and Fel d1 (7.9%) in the dust collected from 101 classrooms. Although levels of all studied allergens in the settled dust of the classrooms were low, there was a relationship between Fel d1 in the classroom dust and development of asthma. CONCLUSION This study showed considerable levels of cockroach allergens in schools. Exposure to cat allergen in our schools played an important role in asthma development; further school-based investigations require evaluating the role of classroom allergen on asthma development.
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Affiliation(s)
- M Moghtaderi
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M A Ashraf
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - S H Teshnizi
- Clinical Research Development Center of Children Hospital, Hormozgan University of Medical Sciences, Iran
| | - H Nabavizadeh
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Farjadian
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Fereidouni
- Allergy and Immunology Research Center, Birjand University of Medical Sciences, Birjand, Iran
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Wang E, Liu X, Tu W, Do DC, Yu H, Yang L, Zhou Y, Xu D, Huang S, Yang P, Ran P, Gao P, Liu Z. Benzo(a)pyrene facilitates dermatophagoides group 1 (Der f 1)-induced epithelial cytokine release through aryl hydrocarbon receptor in asthma. Allergy 2019; 74:1675-1690. [PMID: 30982974 PMCID: PMC6790621 DOI: 10.1111/all.13784] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/24/2019] [Accepted: 02/18/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Environmental pollutants, which coexist with allergens, have been associated with the exacerbation of asthma. However, the underlying molecular mechanisms remain elusive. We sought to determine whether benzo(a)pyrene (BaP) co-exposure with dermatophagoides group 1 allergen (Der f 1) can potentiate Der f 1-induced asthma and its underlying mechanisms. METHODS The effect of BaP was investigated in Der f 1-induced mouse model of asthma, including airway hyper-responsiveness, allergic inflammation, and epithelial-derived cytokines. The impact of BaP on Der f 1-induced airway epithelial cell oxidative stress (ROS) and cytokine release was further analyzed. The role of aryl hydrocarbon receptor (AhR) signaling in BaP-promoted Der f 1-induced ROS, cytokine production, and allergic inflammation was also investigated. RESULTS Compared with Der f 1, BaP co-exposure with Der f 1 led to airway hyper-responsiveness and increased lung inflammation in mouse model of asthma. Increased expression of TSLP, IL-33, and IL-25 was also found in the airways of these mice. Moreover, BaP co-exposure with Der f 1 activated AhR signaling with increased expression of AhR and CYP1A1 and promoted airway epithelial ROS generation and TSLP and IL-33, but not IL-25, expression. Interestingly, AhR antagonist CH223191 or cells with AhR knockdown abrogated the increased expression of ROS, TSLP, and IL-33. Furthermore, ROS inhibitor N-acetyl-L-cysteine (NAC) also suppressed BaP co-exposure-induced expression of epithelial TSLP, IL-33, and IL-25. Finally, AhR antagonist CH223191 and NAC inhibited BaP co-exposure with Der f 1-induced lung inflammation. CONCLUSIONS Our findings suggest that BaP facilitates Der f 1-induced epithelial cytokine release through the AhR-ROS axis.
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Affiliation(s)
- Eryi Wang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Xiaoyu Liu
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Wei Tu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Danh C. Do
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
| | - Haiqiong Yu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
| | - Liteng Yang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
| | - Yufeng Zhou
- Key Laboratory of Neonatal Disease, Ministry of Health, Children's Hospital and Institute of Biomedical SciencesFudan UniversityShanghaiChina
| | - Damo Xu
- Institute of Infection, Immunity and InflammationUniversity of GlasgowGlasgowUK
| | - Shau‐Ku Huang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
- National Institute of Environmental Health SciencesNational Health Research InstitutesMiaoliTaiwan
| | - Pingchang Yang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Pixin Ran
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, The First Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Pei‐Song Gao
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
| | - Zhigang Liu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
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Bryzek D, Ciaston I, Dobosz E, Gasiorek A, Makarska A, Sarna M, Eick S, Puklo M, Lech M, Potempa B, Potempa J, Koziel J. Triggering NETosis via protease-activated receptor (PAR)-2 signaling as a mechanism of hijacking neutrophils function for pathogen benefits. PLoS Pathog 2019; 15:e1007773. [PMID: 31107907 PMCID: PMC6544335 DOI: 10.1371/journal.ppat.1007773] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/31/2019] [Accepted: 04/21/2019] [Indexed: 12/31/2022] Open
Abstract
Neutrophil-derived networks of DNA-composed extracellular fibers covered with antimicrobial molecules, referred to as neutrophil extracellular traps (NETs), are recognized as a physiological microbicidal mechanism of innate immunity. The formation of NETs is also classified as a model of a cell death called NETosis. Despite intensive research on the NETs formation in response to pathogens, the role of specific bacteria-derived virulence factors in this process, although postulated, is still poorly understood. The aim of our study was to determine the role of gingipains, cysteine proteases responsible for the virulence of P. gingivalis, on the NETosis process induced by this major periodontopathogen. We showed that NETosis triggered by P. gingivalis is gingipain dependent since in the stark contrast to the wild-type strain (W83) the gingipain-null mutant strain only slightly induced the NETs formation. Furthermore, the direct effect of proteases on NETosis was documented using purified gingipains. Notably, the induction of NETosis was dependent on the catalytic activity of gingipains, since proteolytically inactive forms of enzymes showed reduced ability to trigger the NETs formation. Mechanistically, gingipain-induced NETosis was dependent on proteolytic activation of protease-activated receptor-2 (PAR-2). Intriguingly, both P. gingivalis and purified Arg-specific gingipains (Rgp) induced NETs that not only lacked bactericidal activity but instead stimulated the growth of bacteria species otherwise susceptible to killing in NETs. This protection was executed by proteolysis of bactericidal components of NETs. Taken together, gingipains play a dual role in NETosis: they are the potent direct inducers of NETs formation but in the same time, their activity prevents P. gingivalis entrapment and subsequent killing. This may explain a paradox that despite the massive accumulation of neutrophils and NETs formation in periodontal pockets periodontal pathogens and associated pathobionts thrive in this environment. Periodontitis, or gum disease, is characterized by chronic inflammation and erosion of the tooth-supporting tissues. The condition is fuelled by bacterial accumulation on the tooth surface below the gum line that resists the host innate immune response, including massive accumulation of neutrophils. Despite possessing a formidable array of bactericidal machineries, including neutrophil extracellular traps (NETs) formation whereby neutrophils release DNA-composed fibers decorated with bactericidal proteins and peptides to efficiently trap and kill bacteria. Nevertheless, neutrophils in periodontitis are unable to clear the infection due to the presence of key periodontal pathogens, including Porphyromonas gingivalis. This bacterium secretes a variety of virulence factors, including proteases (gingipains) that allow the organism to manipulate the host immune response to benefit the entire dysbiotic microbial community. Here, we describe a unique strategy whereby P. gingivalis trigger NET formation through gingipain-dependent cleavage of Protease Activated Receptor (PAR)-2 on the neutrophil surface. Importantly, NETs formed in this way are deficient in antibacterial activity but instead, supports bacterial growth due to degradation of bactericidal components by gingipains. This finding may explain a paradox that dysbiotic bacteria flourished in periodontal pockets in spite of massive accumulation of neutrophils and abundant NETs formation.
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Affiliation(s)
- Danuta Bryzek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Izabela Ciaston
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Ewelina Dobosz
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Anna Gasiorek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Anna Makarska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Michal Sarna
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Sigrun Eick
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Magdalena Puklo
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Maciej Lech
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- Klinikum der Ludwig-Maximilians-Universität München, Medizinische Klinik und Poliklinik IV, Department of Nephrology, Munich, Germany
| | - Barbara Potempa
- Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, University of Louisville, Louisville, Kentucky, United States of America
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, University of Louisville, Louisville, Kentucky, United States of America
- * E-mail: (JP); (JK)
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- * E-mail: (JP); (JK)
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10
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Zhang Z, Cai Z, Hou Y, Hu J, He Y, Chen J, Ji K. Enhanced sensitivity of capture IgE‑ELISA based on a recombinant Der f 1/2 fusion protein for the detection of IgE antibodies targeting house dust mite allergens. Mol Med Rep 2019; 19:3497-3504. [PMID: 30896856 PMCID: PMC6472038 DOI: 10.3892/mmr.2019.10050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 03/06/2019] [Indexed: 12/20/2022] Open
Abstract
The detection of allergen‑specific immunoglobulin (Ig)E is an important method for the diagnosis of IgE‑mediated allergic diseases. The sensitivity of the indirect IgE‑ELISA method against allergen extracts is limited by interference from high IgG titers and low quantities of effectual allergen components in extracts. To overcome these limitations, a novel capture IgE‑ELISA based on a recombinant Der f 1/Der f 2 fusion protein (rDer f 1/2) was developed to enhance the sensitivity to IgEs that bind allergens from the house dust mite (HDM) species Dermatophagoides farina. pET28‑Der f 1/2 was constructed and expressed in Escherichia coli BL21 (DE3) pLysS. The purified fusion protein was evaluated by IgE western blotting, IgE dot blotting and indirect IgE‑ELISA. Capture‑ELISA was performed by coating wells with omalizumab and incubating in series with sera, biotinylated Der f 1/2, horseradish peroxidase‑conjugated streptavidin and 3,3,5,5‑tetramethylbenzidine. The relative sensitivities of indirect‑ELISA and capture‑ELISA for HDM allergen‑specific IgE binding were determined; sera from non‑allergic individuals were used as the control group. rDer f 1/2 was expressed in the form of inclusion bodies comprising refolded protein, which were then purified. It exhibited increased IgE‑specific binding (24/28, 85.8%) than rDer f 1 (21/28, 75.0%) or rDer f 2 (22/28, 78.6%) with HDM‑allergic sera. Furthermore, in a random sample of HDM‑allergic sera (n=71), capture‑ELISA (71/71, 100%) was more sensitive than indirect‑ELISA (68/71, 95.8%) for the detection of HDM‑specific IgEs (P<0.01), indicating that this novel method may be useful for the diagnosis of HDM allergy.
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Affiliation(s)
- Zhen Zhang
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Zelang Cai
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Yibo Hou
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Jiayun Hu
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Yongshen He
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Jiajie Chen
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Kunmei Ji
- Department of Biochemistry and Molecular Biology, Health Science Center of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
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11
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Zhang J, Chen J, Zuo J, Newton GK, Stewart MR, Perrior TR, Garrod DR, Robinson C. Allergen Delivery Inhibitors: Characterisation of Potent and Selective Inhibitors of Der p 1 and Their Attenuation of Airway Responses to House Dust Mite Allergens. Int J Mol Sci 2018; 19:E3166. [PMID: 30326568 PMCID: PMC6214017 DOI: 10.3390/ijms19103166] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 12/21/2022] Open
Abstract
Group 1 allergens of house dust mites (HDM) are globally significant triggers of allergic disease. They are considered as initiator allergens because their protease activity enables the development of allergy to a spectrum of unrelated allergens from various sources. This initiator-perpetuator function identifies Group 1 HDM allergens as attractive drug design targets for the first small-molecule approach directed towards a non-human, root cause trigger of allergic disease. The purpose of this study was to: (i) identify exemplar inhibitors of these allergens using Der p 1 as a design template, and (ii) characterise the pharmacological profiles of these compounds using in vitro and in vivo models relevant to allergy. Potent inhibitors representing four different chemotypes and differentiated by mechanism of action were investigated. These compounds prevented the ab initio development of allergy to the full spectrum of HDM allergens and in established allergy they inhibited the recruitment of inflammatory cells and blunted acute allergic bronchoconstriction following aerosol challenge with the full HDM allergen repertoire. Collectively, the data obtained in these experiments demonstrate that the selective pharmacological targeting of Der p 1 achieves an attractive range of benefits against exposure to all HDM allergens, consistent with the initiator-perpetuator function of this allergen.
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Affiliation(s)
- Jihui Zhang
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, UK.
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Jie Chen
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, UK.
| | - Jie Zuo
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, UK.
- BOE Technology Center, BOE Technology Group Co., Ltd., Beijing 100176, China.
| | - Gary K Newton
- Domainex Ltd., Chesterford Research Park, Little Chesterford, Saffron Walden, Essex CB10 1XL, UK.
| | - Mark R Stewart
- Domainex Ltd., Chesterford Research Park, Little Chesterford, Saffron Walden, Essex CB10 1XL, UK.
| | - Trevor R Perrior
- Domainex Ltd., Chesterford Research Park, Little Chesterford, Saffron Walden, Essex CB10 1XL, UK.
| | - David R Garrod
- Faculty of Biology Medicine and Health, University of Manchester, Manchester M13 9PL, UK.
| | - Clive Robinson
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, UK.
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12
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Norbury LJ, Basałaj K, Zawistowska-Deniziak A, Sielicka A, Wilkowski P, Wesołowska A, Smooker PM, Wędrychowicz H. Intranasal delivery of a formulation containing stage-specific recombinant proteins of Fasciola hepatica cathepsin L5 and cathepsin B2 triggers an anti-fecundity effect and an adjuvant-mediated reduction in fluke burden in sheep. Vet Parasitol 2018; 258:14-23. [PMID: 30105973 DOI: 10.1016/j.vetpar.2018.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/09/2018] [Accepted: 05/12/2018] [Indexed: 12/16/2022]
Abstract
Fasciola hepatica infection continues to be a major problem in the agriculture sector, particularly in sheep and cattle. Cathepsin L and B proteases are major components of the excretory/secretory material of the parasite, and their roles in several important aspects of parasite invasion and survival has led to their use as targets in rational vaccine design. Previous studies in rats demonstrated that the use of stage-specific antigens, cathepsin B2 and cathepsin L5, as part of a multivalent vaccine, was able to confer significant protection against challenge. In the present study, recombinant versions of cathepsin L5 and cathepsin B2 produced in yeast were used in combination to vaccinate sheep. Intramuscular and intranasal forms of administration were applied, and sheep were subsequently challenged with 150 F. hepatica metacercariae. Intramuscular vaccination was able to induce a strong systemic antibody response against both antigens, but failed to confer significant protection. Conversely, no elevated antibody response was detected against the vaccine antigens following nasal vaccination; however, a reduction in parasite egg viability (>92%) and a statistically significant (p = 0.006), predominantly adjuvant-mediated reduction in worm burdens was observed.
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Affiliation(s)
- Luke J Norbury
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland; School of Science, Royal Melbourne Institute of Technology University, Bundoora, Victoria 3083, Australia.
| | - Katarzyna Basałaj
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Anna Zawistowska-Deniziak
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Alicja Sielicka
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Przemysław Wilkowski
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Agnieszka Wesołowska
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Peter M Smooker
- School of Science, Royal Melbourne Institute of Technology University, Bundoora, Victoria 3083, Australia
| | - Halina Wędrychowicz
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
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13
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Laitinen OH, Svedin E, Kapell S, Hankaniemi MM, Larsson PG, Domsgen E, Stone VM, Määttä JAE, Hyöty H, Hytönen VP, Flodström-Tullberg M. New Coxsackievirus 2A pro and 3C pro protease antibodies for virus detection and discovery of pathogenic mechanisms. J Virol Methods 2018; 255:29-37. [PMID: 29425680 DOI: 10.1016/j.jviromet.2018.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 12/16/2022]
Abstract
Enteroviruses (EVs), such as the Coxsackie B-viruses (CVBs), are common human pathogens, which can cause severe diseases including meningitis, myocarditis and neonatal sepsis. EVs encode two proteases (2Apro and 3Cpro), which perform the proteolytic cleavage of the CVB polyprotein and also cleave host cell proteins to facilitate viral replication. The 2Apro cause direct damage to the infected heart and tools to investigate 2Apro and 3Cpro expression may contribute new knowledge on virus-induced pathologies. Here, we developed new antibodies to CVB-encoded 2Apro and 3Cpro; Two monoclonal 2Apro antibodies and one 3Cpro antibody were produced. Using cells infected with selected viruses belonging to the EV A, B and C species and immunocytochemistry, we demonstrate that the 3Cpro antibody detects all of the EV species B (EV-B) viruses tested and that the 2Apro antibody detects all EV-B viruses apart from Echovirus 9. We furthermore show that the new antibodies work in Western blotting, immunocyto- and immunohistochemistry, and flow cytometry to detect CVBs. Confocal microscopy demonstrated the expression kinetics of 2Apro and 3Cpro, and revealed a preferential cytosolic localization of the proteases in CVB3 infected cells. In summary, the new antibodies detect proteases that belong to EV species B in cells and tissue using multiple applications.
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Affiliation(s)
- Olli H Laitinen
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Emma Svedin
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Sebastian Kapell
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Minna M Hankaniemi
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33520, Finland; Fimlab Laboratories, 33520 Tampere, Finland
| | - Pär G Larsson
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Erna Domsgen
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Virginia M Stone
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - Juha A E Määttä
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33520, Finland; Fimlab Laboratories, 33520 Tampere, Finland
| | - Heikki Hyöty
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33520, Finland; Fimlab Laboratories, 33520 Tampere, Finland
| | - Vesa P Hytönen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33520, Finland; Fimlab Laboratories, 33520 Tampere, Finland
| | - Malin Flodström-Tullberg
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital, Stockholm, 141 86, Sweden; Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33520, Finland.
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14
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Hesse L, van Ieperen N, Habraken C, Petersen AH, Korn S, Smilda T, Goedewaagen B, Ruiters MH, van der Graaf AC, Nawijn MC. Subcutaneous immunotherapy with purified Der p1 and 2 suppresses type 2 immunity in a murine asthma model. Allergy 2018; 73:862-874. [PMID: 29318623 PMCID: PMC5947840 DOI: 10.1111/all.13382] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2017] [Indexed: 01/02/2023]
Abstract
BACKGROUND Allergen-specific immunotherapy can induce long-term suppression of allergic symptoms, reduce medication use, and prevent exacerbations of allergic rhinitis and asthma. Current treatment is based on crude allergen extracts, which contain immunostimulatory components such as β-glucans, chitins, and endotoxin. Use of purified or recombinant allergens might therefore increase efficacy of treatment. AIMS Here, we test application of purified natural group 1 and 2 allergens from Dermatophagoides pteronyssinus (Der p) for subcutaneous immunotherapy (SCIT) treatment in a house dust mite (HDM)-driven mouse model of allergic asthma. MATERIALS AND METHODS HDM-sensitized mice received SCIT with crude HDM extract, a mixture of purified Der p1 and 2 (DerP1/2), or placebo. Upon challenges, we measured specific immunoglobulin responses, allergen-induced ear swelling response (ESR), airway hyperresponsiveness (AHR), and inflammation in bronchoalveolar lavage fluid (BAL) and lung tissue. RESULTS ESR measurement shows suppression of early allergic response in HDM-SCIT- and DerP1/2-SCIT-treated mice. Both HDM-SCIT and DerP1/2-SCIT are able to suppress AHR and eosinophilic inflammation. In contrast, only DerP1/2-SCIT is able to significantly suppress type 2 cytokines in lung tissue and BAL fluid. Moreover, DerP1/2-SCIT treatment is uniquely able suppress CCL20 and showed a trend toward suppression of IL-33, CCL17 and eotaxin levels in lung tissue. DISCUSSION Taken together, these data show that purified DerP1/2-SCIT is able to not only suppress AHR and inflammation, but also has superior activity toward suppression of Th2 cells and HDM-induced activation of lung structural cells including airway epithelium. CONCLUSIONS We postulate that treatment with purified natural major allergens derived from HDM will likely increase clinical efficacy of SCIT.
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Affiliation(s)
- L. Hesse
- Experimental Pulmonary and Inflammatory Research (EXPIRE)Department of Pathology & Medical BiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Groningen Research Institute of Asthma and COPD (GRIAC)University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - N. van Ieperen
- Experimental Pulmonary and Inflammatory Research (EXPIRE)Department of Pathology & Medical BiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Groningen Research Institute of Asthma and COPD (GRIAC)University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - C. Habraken
- Experimental Pulmonary and Inflammatory Research (EXPIRE)Department of Pathology & Medical BiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Groningen Research Institute of Asthma and COPD (GRIAC)University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - A. H. Petersen
- Department of Pathology & Medical BiologyMedical Biology SectionUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - S. Korn
- Citeq Biologics BVGroningenThe Netherlands
| | - T. Smilda
- Citeq Biologics BVGroningenThe Netherlands
| | | | - M. H. Ruiters
- Department of Pathology & Medical BiologyMedical Biology SectionUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | | | - M. C. Nawijn
- Experimental Pulmonary and Inflammatory Research (EXPIRE)Department of Pathology & Medical BiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Groningen Research Institute of Asthma and COPD (GRIAC)University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
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15
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Veerapen VP, van Zyl AR, Wigdorovitz A, Rybicki EP, Meyers AE. Novel expression of immunogenic foot-and-mouth disease virus-like particles in Nicotiana benthamiana. Virus Res 2018; 244:213-217. [PMID: 29196195 DOI: 10.1016/j.virusres.2017.11.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/06/2017] [Accepted: 11/27/2017] [Indexed: 01/07/2023]
Abstract
Foot-and-mouth disease (FMD) is a highly contagious disease of cloven-hoofed animals and is endemic in Africa, parts of South America and southern Asia. The causative agent, FMD virus (FMDV) is a member of the genus Aphthovirus, family Picornaviridae. Vaccines currently used against FMDV are chemically inactivated virus strains which are produced under high-level biocontainment facilities, thus raising their cost. The development of recombinant FMDV vaccines has focused predominantly on FMDV virus-like particle (VLP) subunit vaccines for which promising results have been achieved. These VLPs are attractive candidates because they avoid the use of live virus in production facilities, but conserve the complete repertoire of conformational epitopes of the virus. Recombinant FMDV VLPs are formed by the expression and assembly of the three structural proteins VP0, VP1 and VP3. This can be attained by co-expression of the three individual structural capsid proteins or by co-expression of the viral capsid precursor P1-2A together with the viral protease 3C. The latter proteolytically cleaves P1-2A into the respective structural proteins. These VLPS are produced in mammalian or insect cell culture systems, which are expensive and can be easily contaminated. Plants, such as Nicotiana benthamiana, potentially provide a more cost-effective and very highly scalable platform for recombinant protein and VLP production. In this study, P1-2A was transiently expressed in N. benthamiana alone, without the 3C protease. Surprisingly, there was efficient processing of the P1-2A polyprotein into its component structural proteins, and subsequent assembly into VLPs. The yield was ∼0.030μg per gram of fresh leaf material. Partially purified VLPs were preliminarily tested for immunogenicity in mice and shown to stimulate the production of FMDV-specific antibodies. This study, has important implications for simplifying the production and expression of potential vaccine candidates against FMDV in plants, in the absence of 3C expression.
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Affiliation(s)
- Varusha Pillay Veerapen
- Biopharming Research Unit, Department of Molecular and cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa.
| | - Albertha R van Zyl
- Biopharming Research Unit, Department of Molecular and cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa.
| | - Andrés Wigdorovitz
- Instituto de Virología, Centro de Investigación en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina.
| | - Edward P Rybicki
- Biopharming Research Unit, Department of Molecular and cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa; Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa.
| | - Ann E Meyers
- Biopharming Research Unit, Department of Molecular and cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa.
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16
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Peixoto S, Soares J, Monteiro T, Carvalho M, Santos M, Simões C, Quaresma M. [Evaluation of sensitization to Der p 1 and Der p 2 in a pediatric population of the North of Portugal]. An Pediatr (Barc) 2017; 89:162-169. [PMID: 29290503 DOI: 10.1016/j.anpedi.2017.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 10/13/2017] [Accepted: 10/16/2017] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION In Portugal, data on the role of Der p 1 and Der p 2 in patients with house dust mite (HDM) allergy are scarce. Allergen-specific immunotherapy (sIT) is the only treatment that improves symptoms, reduces the need for pharmacological therapy and modifies the natural history of the disease. With this study, the authors aim to understand the local epidemiology and to clarify if the molecular assay of major allergens is advantageous in deciding and/or modifying the decision to initiate sIT in children with clinical indication which are sensitized to Dermatophagoides pteronyssinus. METHODS Retrospective study with analysis of patients with asthma and/or rhinitis. STUDY PERIOD January/2013-December/2016. INCLUSION CRITERIA 1) positive prick-test to Dermatophagoides pteronyssinus; and 2) clinically relevant disease under treatment. Assay Der p 1 and Der p 2 values ≥0.35 kUA/L were considered positive. Statistical significance was set at P<.05. RESULTS The clinical files of 279 patients. Mean ages 9.55 years (min.4-max.17). Asthma was present in 199 children (71.3%) and rhinitis in 245 (87.8%). Der p 1 and Der p 2 was <0.35kUA/L in 29 (10,4%) patients. The value of Der p 1/Der p 2 correlated with the size of the prick-test papule, the value of the eosinophils and the total IgE. CONCLUSIONS Der p 1 and Der p 2 are dominant allergens in our population and there may be benefits in determining these molecular allergen levels in patients with a positive prick-test and a clinical indication for sIT prior to a decision of initiating sIT or not.
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Affiliation(s)
- Sara Peixoto
- Departamento de Pediatría, Centro Hospitalar de Trás-os-Montes e Alto Douro (CHTMAD), Vila Real, Portugal.
| | - Joana Soares
- Departamento de Pediatría, Centro Hospitalar de Trás-os-Montes e Alto Douro (CHTMAD), Vila Real, Portugal
| | - Tânia Monteiro
- Departamento de Pediatría, Centro Hospitalar de Trás-os-Montes e Alto Douro (CHTMAD), Vila Real, Portugal
| | - Marisa Carvalho
- Departamento de Pediatría, Centro Hospitalar de Trás-os-Montes e Alto Douro (CHTMAD), Vila Real, Portugal
| | - Marinela Santos
- Departamento de Psiquiatría y Salud Mental, CHTMAD, Vila Real, Portugal
| | - Carla Simões
- Departamento de Patología Clínica, CHTMAD, Vila Real, Portugal
| | - Márcia Quaresma
- Departamento de Pediatría, Centro Hospitalar de Trás-os-Montes e Alto Douro (CHTMAD), Vila Real, Portugal
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Thomas RG, Rivera Reyes BM, Gaston BM, Rivera Acosta NB, Bederman IR, Smith LA, Sutton MT, Wang B, Hunt JF, Bonfield TL. Conjugation of nitrated acetaminophen to Der p1 amplifies peripheral blood monocyte response to Der p1. PLoS One 2017; 12:e0188614. [PMID: 29228007 PMCID: PMC5724819 DOI: 10.1371/journal.pone.0188614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 11/12/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND An association of acetaminophen use and asthma was observed in the International Study of Asthma and Allergies in Childhood study. However there are no clear mechanisms to explain an association between acetaminophen use and immunologic pathology. In acidic conditions like those in the stomach and inflamed airway, tyrosine residues are nitrated by nitrous and peroxynitrous acids. The resulting nitrotyrosine is structurally similar to 2,4-dinitrophenol and 2,4-dinitrochlorobenzene, known haptens that enhance immune responses by covalently binding proteins. Nitrated acetaminophen shares similar molecular structure. OBJECTIVE We hypothesized the acetaminophen phenol ring undergoes nitration under acidic conditions, producing 3-nitro-acetaminophen which augments allergic responses by acting as a hapten for environmental allergens. METHODS 3-nitro-acetaminophen was formed from acetaminophen in the presence of acidified nitrite, purified by high performance liquid chromatography, and assayed by gas-chromatography mass spectrometry. Purified 3-nitro-acetaminophen was reacted with Dermatophagoides pteronyssinus (Der p1) and analyzed by mass spectrometry to identify the modification site. Human peripheral blood mononuclear cells proliferation response was measured in response to 3-nitro-acetaminophen and to 3-nitro-acetaminophen-modified Der p1. RESULTS Acetaminophen was modified by nitrous acid forming 3-nitro-acetaminophen over a range of different acidic conditions consistent with airway inflammation and stomach acidity. The Der p1 protein-hapten adduct creation was confirmed by liquid chromatography-mass spectrometry proteomics modifying cysteine 132. Peripheral blood mononuclear cells exposed to 3-nitro-acetaminophen-modified Der p1 had increased proliferation and cytokine production compared to acetaminophen and Der p1 alone (n = 7; p < 0.05). CONCLUSION These data suggests 3-nitro-acetaminophen formation and reaction with Der p1 provides a mechanism by which stomach acid or infection-induced low airway pH in patients could enhance the allergic response to proteins such as Der p1.
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Affiliation(s)
- Ryan G. Thomas
- Department of Pediatrics, Division of Pulmonology, University Hospitals Cleveland Medical Center, Rainbow Babies and Children’s Hospital, Cleveland, Ohio, United States of America
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Brenda M. Rivera Reyes
- Department of Pediatrics, Division of Pulmonology, University Hospitals Cleveland Medical Center, Rainbow Babies and Children’s Hospital, Cleveland, Ohio, United States of America
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Benjamin M. Gaston
- Department of Pediatrics, Division of Pulmonology, University Hospitals Cleveland Medical Center, Rainbow Babies and Children’s Hospital, Cleveland, Ohio, United States of America
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Nelki B. Rivera Acosta
- Department of Pediatrics, Division of Pulmonology, University Hospitals Cleveland Medical Center, Rainbow Babies and Children’s Hospital, Cleveland, Ohio, United States of America
| | - Ilya R. Bederman
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Laura A. Smith
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Morgan T. Sutton
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
| | - Benlian Wang
- Center of Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, Ohio, United States of America
| | - John F. Hunt
- Airbase Therapeutics, Charlottesville, Virginia, United States of America
| | - Tracey L. Bonfield
- Department of Pediatrics, Division of Pulmonology, Case Western Reserve University, Cleveland, United States of America
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18
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Puckette M, Clark BA, Smith JD, Turecek T, Martel E, Gabbert L, Pisano M, Hurtle W, Pacheco JM, Barrera J, Neilan JG, Rasmussen M. Foot-and-Mouth Disease (FMD) Virus 3C Protease Mutant L127P: Implications for FMD Vaccine Development. J Virol 2017; 91:e00924-17. [PMID: 28878081 PMCID: PMC5660475 DOI: 10.1128/jvi.00924-17] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/23/2017] [Indexed: 01/23/2023] Open
Abstract
The foot-and-mouth disease virus (FMDV) afflicts livestock in more than 80 countries, limiting food production and global trade. Production of foot-and-mouth disease (FMD) vaccines requires cytosolic expression of the FMDV 3C protease to cleave the P1 polyprotein into mature capsid proteins, but the FMDV 3C protease is toxic to host cells. To identify less-toxic isoforms of the FMDV 3C protease, we screened 3C mutants for increased transgene output in comparison to wild-type 3C using a Gaussia luciferase reporter system. The novel point mutation 3C(L127P) increased yields of recombinant FMDV subunit proteins in mammalian and bacterial cells expressing P1-3C transgenes and retained the ability to process P1 polyproteins from multiple FMDV serotypes. The 3C(L127P) mutant produced crystalline arrays of FMDV-like particles in mammalian and bacterial cells, potentially providing a practical method of rapid, inexpensive FMD vaccine production in bacteria.IMPORTANCE The mutant FMDV 3C protease L127P significantly increased yields of recombinant FMDV subunit antigens and produced virus-like particles in mammalian and bacterial cells. The L127P mutation represents a novel advancement for economical FMD vaccine production.
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Affiliation(s)
- Michael Puckette
- U.S. Department of Homeland Security Science and Technology Directorate, Plum Island Animal Disease Center, Greenport, New York, USA
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, Tennessee, USA
| | - Benjamin A Clark
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, Tennessee, USA
| | - Justin D Smith
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, Tennessee, USA
| | - Traci Turecek
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
| | - Erica Martel
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, Tennessee, USA
| | - Lindsay Gabbert
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
| | - Melia Pisano
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
| | - William Hurtle
- U.S. Department of Homeland Security Science and Technology Directorate, Plum Island Animal Disease Center, Greenport, New York, USA
| | - Juan M Pacheco
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, Tennessee, USA
| | - José Barrera
- Leidos, Inc., Plum Island Animal Disease Center, Greenport, New York, USA
| | - John G Neilan
- U.S. Department of Homeland Security Science and Technology Directorate, Plum Island Animal Disease Center, Greenport, New York, USA
| | - Max Rasmussen
- U.S. Department of Homeland Security Science and Technology Directorate, Plum Island Animal Disease Center, Greenport, New York, USA
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Yin SC, Liao EC, Ye CX, Chang CY, Tsai JJ. Effect of mite allergenic components on innate immune response: Synergy of protease (Group 1 & 3) and non-protease (Group 2 & 7) allergens. Immunobiology 2017; 223:443-448. [PMID: 29398016 DOI: 10.1016/j.imbio.2017.10.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 10/14/2017] [Indexed: 01/23/2023]
Abstract
The major mite allergenic components of protease allergens (group 1,3) and non-protease allergens (group 2,7) derived from Dermatophagoides peronyssinus (Dp) and D. farinae (Df) are reported to be capable of sensitizing 80-90% of mite-allergic patients. Although protease and non-protease allergens have been demonstrated to trigger innate and adaptive immune responses through epithelium activation, the simultaneous or sequential effects of both groups of allergens has not been reported. Since all allergens are present in the mite crude extracts, it is important to determine whether these allergens can synergistically trigger the immune responses to cause airway inflammation. A total of 60 house dust mite (HDM)-allergic asthmatic patients were recruited to analyze their serum-specific IgE response to both groups of allergens. Recombinant protease allergen (Der p1 and Der p3) and non-protease allergens (Der p2 and Der p7) were used to activate the human airway epithelium cell (Beas-2B). The cells were analyzed for mRNA expression of IL-6/IL-8 and the culture supernatants were analyzed for neutrophil chemotactic activity (NCA). The results showed 48/60 (80%) HDM-allergic patients were sensitized to all allergenic components of Der p1, Der p2, Der f1, and Der f2. Most of the allergic patients were sensitized to both groups of allergens simultaneously. The associations of Der p1 with Der p2 were 83.3% (50/60) and Der f1 with Der f2 were 80% (48/60). When Beas-2B cells were cultured with Der p2 in conjunction with Der p1 and Der p3, the results showed that there was increased expression of IL-6/IL-8 in comparison with culture with allergen alone. There was only a trivial effect on IL-6/IL-8 expression when Der p2 was co-cultured with Der p7. Similar findings were obtained in the NCA measurement. When Beas-2B was cultured with Der p2 in conjunction with Der p1 and Der p3, there was increased NCA in comparison with culture with allergen alone. There were also trivial effects when Der p2 was co-cultured with Der p7. The allergens (Der p2 and Der p3)-induced IL-6/IL-8 expression and NCA released from Beas-2B could be downregulated by dexamethasone and transcription factor inhibitor SP600125. The allergenic components derived from Dp and Df can sensitize allergic patients simultaneously and activate epithelium through protease allergens (group 1, 3) and non-protease allergen (group 2) synergistically.
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Affiliation(s)
- Sui-Chu Yin
- Center for Translational Medicine, Department of Medical Research, Taichung Veterans General Hospital, Taiwan
| | - En-Chih Liao
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan
| | - Chi-Xin Ye
- Center for Translational Medicine, Department of Medical Research, Taichung Veterans General Hospital, Taiwan; Section of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Asian University Hospital, Taichung, Taiwan
| | - Ching-Yun Chang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jaw-Ji Tsai
- Center for Translational Medicine, Department of Medical Research, Taichung Veterans General Hospital, Taiwan; Section of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Asian University Hospital, Taichung, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.
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20
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Turturice BA, Ranjan R, Nguyen B, Hughes LM, Andropolis KE, Gold DR, Litonjua AA, Oken E, Perkins DL, Finn PW. Perinatal Bacterial Exposure Contributes to IL-13 Aeroallergen Response. Am J Respir Cell Mol Biol 2017; 57:419-427. [PMID: 28443674 PMCID: PMC5650087 DOI: 10.1165/rcmb.2017-0027oc] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/25/2017] [Indexed: 12/22/2022] Open
Abstract
There is a high prevalence of aeroallergen sensitivity in asthmatic populations, and seroreactivity to aeroallergens early in infancy is associated with increased risk of developing asthma later in life. In addition to allergen sensitivity, asthma development has been associated with differential microbial exposure and infection in early life. We have previously shown that cord blood mononuclear cells respond to common aeroallergens (i.e., house dust mite [Der f1] and cockroach [Bla g2]) as assayed by lymphoproliferation and cytokine (IL-13 and IFN-γ) production. We hypothesized that there is a relationship between perinatal microbial exposure and response to specific aeroallergens. To test this hypothesis, we isolated DNA from cord blood serum samples with known lymphoproliferative and cytokine responses to Bla g2 and Der f1. Bacterial 16S ribosomal DNA amplicon libraries were generated and analyzed using high throughput sequencing of cord blood serum samples. In our analysis, we identified major compositional differences, including diversity and abundance of specific taxa, between groups whose IL-13 response to Der f1 and Bla g2 differed. We demonstrate a strong association between the ratio of Acinetobacter to Proteobacteria and IL-13 production and the probability of IL-13 production after allergen exposure. IL-13 concentrations in serum were also significantly correlated with the diversity of bacterial DNA. Together, these results underscore the relationship between immune responses to allergens and bacterial exposure during perinatal development.
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Affiliation(s)
- Benjamin A. Turturice
- Department of Microbiology and Immunology
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
| | - Ravi Ranjan
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
| | - Brian Nguyen
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
| | | | | | - Diane R. Gold
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; and
| | - Augusto A. Litonjua
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Emily Oken
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - David L. Perkins
- Division of Nephrology, Department of Medicine, and
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois
| | - Patricia W. Finn
- Department of Microbiology and Immunology
- Division of Pulmonary, Critical Care, Sleep, and Allergy, and
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21
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Tian M, Zhou Y, Zhang W, Cui Y. Der p 1 and Der p 2 specific immunoglobulin E measurement for diagnosis of Dermatophagoides pteronyssinus allergy: A systematic review and meta-analysis. Allergy Asthma Proc 2017; 38:333-342. [PMID: 28814355 DOI: 10.2500/aap.2017.38.4073] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND A clinical history of allergic symptoms and a skin-prick test with house-dust mite crude extracts are standard diagnostic procedures for Dermatophagoides pteronyssinus allergy. Specific immunoglobulin E (IgE) responses to Der p 1 and Der p 2 allergens have been used for the diagnosis of D. pteronyssinus allergy; however, evaluation of the diagnostic performance of Der p 1 and Der p 2 specific IgE (sIgE) produced inconsistent findings. We sought to evaluate the diagnostic accuracy of Der p 1 sIgE and Der p 2 sIgE measurement in the diagnosis of D. pteronyssinus allergy by performing a systematic review and meta-analysis of previously published studies. METHODS Several medical literature electronic data bases were searched for related literature published through August 1, 2016. A bivariate model was used to pool estimates of sensitivity, specificity, diagnostic odds ratio, and area under the summary receiver operating curves as the main diagnostic measures. RESULTS Eight studies, which involved 1095 patients, were included in our analysis. The pooled estimates of sensitivity, specificity, and diagnostic odds ratio for Der p 1 were 0.84, 0.97, and 166.57, respectively. The combined results for Der p 2 were a sensitivity of 0.87, specificity of 1.00, and a diagnostic odds ratio of 17342.35. The areas under the summary receiver operating curves for Der p 1 sIgE and Der p 2 sIgE were 0.94 and 0.98, respectively. CONCLUSION Our results supported the use of Der p 1 and Der p 2 sIgE in the diagnosis of D. pteronyssinus allergy. Both displayed good diagnostic performance and would be useful in a clinical setting in the accurate diagnosis of dust mite allergy.
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22
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Zhao X, Jin B, Yang B, Yan W, Wu X, Jiang C, Cheng S. Gadolinium chloride ameliorates acute lung injury associated with severe acute pancreatitis in rats by regulating CYLD/NF-κB signaling. Biochem Biophys Res Commun 2017; 492:255-261. [PMID: 28823916 DOI: 10.1016/j.bbrc.2017.08.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 08/16/2017] [Indexed: 11/18/2022]
Abstract
The present study was embarked on an investigation of the mechanisms behind the effects of Gadolinium chloride (GdCl3) on lung injury associated with severe acute pancreatitis (SAP) in rats. Rats were randomly distributed into three groups: sham operation group (SO), SAP group and SAP treated with GdCl3 group (SAP + GdCl3). Retrograde injection of 5% sodium taurocholate into the biliopancreatic duct was adopted to induce SAP. Lung tissue specimens were harvested for histological study, wet-to-dry weight ratio calculation and myeloperoxidase examination. Meanwhile, bronchoalveolar lavage fluid was analyzed for TNF-α and IL-1β activity and proteins content. Then the apoptosis ratio of alveolar macrophages (AMs) was detected. NF-κB activation and cylindromatosis (CYLD) expression in AMs were measured respectively. Results showed that GdCl3 treatment notably ameliorated lung injury induced by SAP, and simultaneously, the apoptosis ratio of AMs was significantly promoted. The NF-κB activation was obviously inhibited when CYLD expression was markedly up-regulated in AMs of SAP + GdCl3. Negative correlation was analyzed between CYLD and NF-κB in both SAP and SAP + GdCl3. These data demonstrate that GdCl3 ameliorates lung injury secondary to SAP in rats mainly by up-regulating CYLD expression and inhibiting NF-κB activation in AMs, which may play a vital role in lung injury.
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Affiliation(s)
- Xiuhao Zhao
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, PR China
| | - Bei Jin
- Department of Pediatric Surgery, Central Hospital of Handan City, Hebei, PR China
| | - Bin Yang
- Department of Vascular Surgery, Jining No.1 People's Hospital, Shandong, PR China
| | - Wenmao Yan
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, PR China
| | - Xianjia Wu
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, PR China
| | - Cuinan Jiang
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, PR China
| | - Shi Cheng
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, PR China.
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Bozek A, Starczewska-Dymek L, Jarzab J. Prolonged effect of allergen sublingual immunotherapy for house dust mites in elderly patients. Ann Allergy Asthma Immunol 2017; 119:77-82. [PMID: 28668244 DOI: 10.1016/j.anai.2017.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/20/2017] [Accepted: 05/12/2017] [Indexed: 11/17/2022]
Abstract
BACKGROUND The prolonged effect of allergen immunotherapy is unknown, especially in older patients. OBJECTIVE To analyze the 3-year effect of sublingual allergen-specific immunotherapy (SLIT) to house dust mites in elderly patients with allergic rhinitis. METHODS Forty-seven elderly patients (65.78 ± 4.89 years old) underwent SLIT to house dust mites and were monitored for 3 years and compared with a placebo group. SLIT was performed with the use of oral Staloral 300 SR Der p and Der f 50/50% extract (Stallergens Greer, London, United Kingdom) or placebo. Symptoms and medication score, represented by the average adjusted symptom score (AAdSS), serum level of immunoglobulin (Ig) G4 to Dermatophagoides pteronyssinus, Dermatophagoides farinae, Der p 1, and Der p 2, and quality of life, were assessed immediately after SLIT and 3 years later. RESULTS The AAdSS was significantly decreased after SLIT, and the level remained low during the 3 years after SLIT compared with placebo. Serum-specific IgG4 against D pteronyssinus, D farinae, Der p 1, and Der p 2 increased during the SLIT trial in the study group. For the 3 years of observation after SLIT, there were no significant changes of specific IgG4 levels against the analyzed allergens compared with results just after SLIT. Quality of life based on the Rhinoconjunctivitis Quality of Life Questionnaire score was significantly decreased in patients who received SLIT, from 1.48 (95% confidence interval 1.33-1.79) to 0.98 (95% confidence interval 0.67-1.07; P < .05) compared with 0.94 (95% confidence interval 0.55-1.04) 3 years after SLIT. CONCLUSION The prolonged positive effect after SLIT to house dust mites was observed in elderly patients with allergic rhinitis. Further trials are needed to confirm this effect. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01605760.
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Affiliation(s)
- Andrzej Bozek
- Clinical Department of Internal Disease, Dermatology and Allergology in Zabrze, Medical University of Silesia in Katowice, Katowice, Poland.
| | | | - Jerzy Jarzab
- Clinical Department of Internal Disease, Dermatology and Allergology in Zabrze, Medical University of Silesia in Katowice, Katowice, Poland
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Teng F, Sun J, Wang N, Yu L, Cui Y. [Screening of specific IgE-binding epitopes of dust mite allergens using short peptide array]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2017; 33:1128-1132. [PMID: 28871956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective To screen the possible linear epitopes of major and mid-potency allergens in Dermatophagoides farinae (Der f1, Der f2, Der f4, Der f5 and Der f7). Methods Short peptides were synthesized on the basis of the amino acid sequences in active fraction of Der f1, Der f2, Der f4, Der f5 and Der f7. Each peptide had eight amino acids in length and seven of them were overlapped with each other. Put these peptides to the chip to build microarrays that would have immunoreaction with human serum IgE. Then the chips were scanned to analyze the data. Results A total of 1128 short peptides from the above five groups of allergens were synthesized, and the microarray chips were constructed. Six serum samples from children who were allergic to Dermatophagoides farinae were mixed and added to the microarray chips. The chips were scanned and analyzed, and the results showed that Der f1 had four epitopes (46-53aa, 71-78aa, 99-110aa and 179-186aa), that Der f2 had three epitopes (15-22aa, 80-89aa and 106-113aa), that Der f 4 had six epitopes (69-82aa, 107-116aa, 225-232aa, 261-268aa, 355-365aa and 483-496aa), that Der f5 had one epitope (102-109aa), and Der f7 had three epitopes (32-39aa, 52-64aa and 100-107aa). Conclusion We identified the linear epitopes of Der f1, Der f2, Der f4, Der f5 and Der f7.
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Affiliation(s)
- Feixiang Teng
- Faculty of Basic Medicine, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Jinxia Sun
- Faculty of Basic Medicine, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Nan Wang
- Faculty of Basic Medicine, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Lili Yu
- Faculty of Basic Medicine, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Yubao Cui
- Department of Clinical Laboratory, Yancheng Third People's Hospital, Yancheng 224001, China. *Corresponding author, E-mail:
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Miller RL, Zhang H, Jezioro J, De Planell Saguer M, Lovinsky-Desir S, Liu X, Perzanowski M, Divjan A, Phipatanakul W, Matsui EC. Reduced mouse allergen is associated with epigenetic changes in regulatory genes, but not mouse sensitization, in asthmatic children. Environ Res 2017; 156:619-624. [PMID: 28454014 PMCID: PMC5503684 DOI: 10.1016/j.envres.2017.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 03/06/2017] [Accepted: 04/20/2017] [Indexed: 06/07/2023]
Abstract
Chronic exposure to mouse allergen may contribute greatly to the inner-city asthma burden. We hypothesized that reducing mouse allergen exposure may modulate the immunopathology underlying symptomatic pediatric allergic asthma, and that this occurs through epigenetic regulation. To test this hypothesis, we studied a cohort of mouse sensitized, persistent asthmatic inner-city children undergoing mouse allergen-targeted integrated pest management (IPM) vs education in a randomized controlled intervention trial. We found that decreasing mouse allergen exposure, but not cockroach, was associated with reduced FOXP3 buccal DNA promoter methylation, but this was unrelated to mouse specific IgE production. This finding suggests that the environmental epigenetic regulation of an immunomodulatory gene may occur following changing allergen exposures in some highly exposed cohorts. Given the clinical and public health importance of inner-city pediatric asthma and the potential impact of environmental interventions, further studies will be needed to corroborate changes in epigenetic regulation following changing exposures over time, and determine their impact on asthma morbidity in susceptible children.
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Affiliation(s)
- Rachel L Miller
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, PH8E-101B, 630 W. 168th St., New York City, NY 10032, USA; Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Columbia University Medical Center, PH8E-101B, 630 W. 168th St., New York City, NY 10032, USA; Department of Environmental Health Sciences, Columbia University, 722 W 168th St, 11th Floor, New York City, NY, 10032, USA.
| | - Hanjie Zhang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, PH8E-101B, 630 W. 168th St., New York City, NY 10032, USA
| | - Jacqueline Jezioro
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, PH8E-101B, 630 W. 168th St., New York City, NY 10032, USA
| | - Mariangels De Planell Saguer
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Columbia University Medical Center, PH8E-101B, 630 W. 168th St., New York City, NY 10032, USA
| | - Stephanie Lovinsky-Desir
- Division of Pulmonary, Department of Pediatrics, Columbia University Medical Center, 3959 Broadway, CHC 7-701, New York City, NY 10032, USA
| | - Xinhua Liu
- Department of Biostatistics, Columbia University Medical Center, 722 W 168 St, 6 Floor, New York City, NY, 10032, USA
| | - Matthew Perzanowski
- Department of Environmental Health Sciences, Columbia University, 722 W 168th St, 11th Floor, New York City, NY, 10032, USA
| | - Adnan Divjan
- Department of Environmental Health Sciences, Columbia University, 722 W 168th St, 11th Floor, New York City, NY, 10032, USA
| | - Wanda Phipatanakul
- Division of Pediatric Allergy/Immunology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115, USA
| | - Elizabeth C Matsui
- Division of Pediatric Allergy/Immunology, Johns Hopkins School of Medicine, CMSC 1102, 600 N. Wolfe Street, Baltimore, MD 21287, USA
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Bao ZJ, Fan YM, Cui YF, Sheng YF, Zhu M. Effect of PM2.5 mediated oxidative stress on the innate immune cellular response of Der p1 treated human bronchial epithelial cells. Eur Rev Med Pharmacol Sci 2017; 21:2907-2912. [PMID: 28682426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the effect of stimulation of Human Bronchial Epithelial Cells (HBEC) by Der p1 and PM2.5 on the expression of innate immune cell factors to find new therapeutic targets for treatment of bronchial asthma. MATERIALS AND METHODS The Der p1 antigen exposure model in the HEBC line, 16HBE-14o, was established in vitro. PM2.5 at a concentration of 50 µM/cm2, was added to these cells for 0.5 h, 1 h, 2 h and 3 h. Cells were treated with the following reagents for the indicated times: 300 ng/mL Der p1 for 21 h, 50 µM/cm2 PM2.5 for 3 h, 10 mM Nac for 3 h and PM2.5 contamination for 3 h. The experiment was divided into five groups: control (group A), Der p1 exposure group (group B), PM2.5 treated group (group C), PM2.5+Der p1 exposure group (group D), Nac+PM2.5+Der p1 exposure group (group E). ELISA method was adopted to test the expression levels of malondialdehyde, IL-25, IL-33 and thymic stromal lymphopoietin (TSLP), and Real-time RT-PCT was used to measure IL-25, IL-33 and TSLP mRNA. RESULTS The protein and mRNA levels of malondialdehyde, IL-25, IL-33 and TSLP in group D were significantly higher than those in the other groups, while the protein and mRNA levels of malondialdehyde, IL-25, IL-33 and TSLP in group E were significantly lower than those in group D (p<0.05). CONCLUSIONS PM2.5 can enhance the Der p1 antigen-induced HBEC innate immune response through the expression of IL-25, IL-33 and TSLP, which may exacerbate the occurrence rate of bronchial asthma.
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Affiliation(s)
- Z-J Bao
- Tuberculosis Department of Hangzhou RedCross Hospital, Hangzhou City, Zhejiang, China.
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Cheng Q, Yang CY, Guo BY, Wei X, Liu M. Analysis of mechanism of PM2.5 and house dust mite antigen Der p1 in attack stage of child asthma. Eur Rev Med Pharmacol Sci 2017; 21:2458-2462. [PMID: 28617540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE We analyzed the influence of PM2.5 and house dust mite antigen Der p1 on the treatment of child asthma attack. PATIENTS AND METHODS A total of 96 children with asthma attack were included into the study. The patients were randomly divided into the PM2.5 group, the house dust mite antigen group, the synergistic group and the control group (n= 24 in each group). RESULTS The PM2.5 concentration in the PM2.5 group was twice higher than standard level (≤ the average value of PM2.5 in local air). All cases were given with same treatment, and the treatment effects were compared and analyzed. It was found that the asthma control rate in the control group was significantly higher than that in the PM2.5 group and the house dust mite antigen group, and the synergistic group was the lowest. The control time in the synergistic group was significantly longest, followed by the PM2.5 group and the house dust mite antigen group, and the control group was significantly short (p<0.05). After the intervention, the FVC, FEV1, and PEF levels were all increased. Those in control group were significantly higher than those of PM2.5 group and Dermatophagoides pteronyssinus group. Indicators in the collaborative group were the lowest. Differences were statistically significant (p<0.05). The differences in the PM2.5 group and Dermatophagoides pteronyssinus group were not statistically significant. The contents of serum IL-25, TSLP, and malondialdehyde after treatment of the control group significantly lowered while the other three groups showed a significant higher (p<0.05). CONCLUSIONS The PM2.5 and house dust mite antigen Der p1 can influence the treating effects of child asthma attack by an inflammatory reaction and oxidative stress.
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Affiliation(s)
- Q Cheng
- Department of Paediatrics, Liaocheng People's Hospital, Liaocheng, Shandong, China.
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Stempin CC, Rojas Marquez JD, Ana Y, Cerban FM. GRAIL and Otubain-1 are Related to T Cell Hyporesponsiveness during Trypanosoma cruzi Infection. PLoS Negl Trop Dis 2017; 11:e0005307. [PMID: 28114324 PMCID: PMC5289611 DOI: 10.1371/journal.pntd.0005307] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 02/02/2017] [Accepted: 01/06/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Trypanosoma cruzi infection is associated with severe T cell unresponsiveness to antigens and mitogens and is characterized by decreased IL-2 synthesis. In addition, the acquisition of the anergic phenotype is correlated with upregulation of "gene related to anergy in lymphocytes" (GRAIL) protein in CD4 T cells. We therefore sought to examine the role of GRAIL in CD4 T cell proliferation during T. cruzi infection. METHODOLOGY/PRINCIPAL FINDINGS Balb/c mice were infected intraperitoneally with 500 blood-derived trypomastigotes of Tulahuen strain, and spleen cells from control non-infected or infected animals were obtained. CD4 T cell proliferation was assessed by CFSE staining, and the expression of GRAIL in splenic T cells was measured by real-time PCR, flow cytometry and Western blot. We found increased GRAIL expression at the early stages of infection, coinciding with the peak of parasitemia, with these findings correlating with impaired proliferation and poor IL-2 and IFN-γ secretion in response to plate-bound antibodies. In addition, we showed that the expression of GRAIL E3-ubiquitin ligase in CD4 T cells during the acute phase of infection was complemented by a high expression of inhibitory receptors such as PD-1 and CTLA-4. We demonstrated that GRAIL expression during infection was modulated by the mammalian target of the rapamycin (mTOR) pathway, since addition of IL-2 or CTLA-4 blockade in splenocytes from mice 21 days post infection led to a reduction in GRAIL expression. Furthermore, addition of IL-2 was able to activate the mTOR pathway, inducing Otubain-1 expression, which mediated GRAIL degradation and improved T cell proliferation. CONCLUSIONS We hypothesize that GRAIL expression induced by the parasite may be maintained by the increased expression of inhibitory molecules, which blocked mTOR activation and IL-2 secretion. Consequently, the GRAIL regulator Otubain-1 was not expressed and GRAIL maintained the brake on T cell proliferation. Our findings reveal a novel association between increased GRAIL expression and impaired CD4 T cell proliferation during Trypanosoma cruzi infection.
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Affiliation(s)
- Cinthia C. Stempin
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende y Haya de la Torre, Ciudad Universitaria, Córdoba, Argentina
| | - Jorge D. Rojas Marquez
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende y Haya de la Torre, Ciudad Universitaria, Córdoba, Argentina
| | - Yamile Ana
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende y Haya de la Torre, Ciudad Universitaria, Córdoba, Argentina
| | - Fabio M. Cerban
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), CONICET, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende y Haya de la Torre, Ciudad Universitaria, Córdoba, Argentina
- * E-mail:
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Stemeseder T, Schweidler B, Doppler P, Klinglmayr E, Moser S, Lueftenegger L, Himly M, Lang R, Zumbach J, Oostingh GJ, Hawranek T, Bathke AC, Gadermaier G. Exposure to Indoor Allergens in Different Residential Settings and Its Influence on IgE Sensitization in a Geographically Confined Austrian Cohort. PLoS One 2017; 12:e0168686. [PMID: 28045938 PMCID: PMC5207653 DOI: 10.1371/journal.pone.0168686] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 12/05/2016] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Exposure to indoor allergens is crucial for IgE sensitization and development of allergic symptoms. Residential settings influence the allergen amount in house dust and hence allergic sensitization. Within this study, we investigated allergen exposure and molecule-based IgE levels in a geographically confined region and evaluated the impact of housing, pets and cleaning. METHODS 501 adolescents from Salzburg, Austria participated in this cross-sectional study. House dust samples were examined regarding major mite, cat, dog, and mold allergens using a multiplex assay. Serum samples of participants were analyzed for specific IgE to Der p 1, Der p 2, Fel d 1, Can f 1 and Alt a 1 using the multiplex array ImmunoCAP ISAC. Information on allergies, living areas, dwelling form (house, flat, farm), pets, and household cleanliness were obtained by a questionnaire. RESULTS In investigated house dust samples, the concentration of cat allergen was highest while the prevalence of mold allergens was very low. Participants showed IgE sensitization to Der p 1 (13.2%), Der p 2 (18.2%), Fel d 1 (14.4%), Can f 1 (2.4%) and Alt a 1 (2.0%). In alpine regions, lower mite allergen concentrations were detected which correlated with reduced IgE levels. A trend for increased sensitization prevalence from rural to alpine to urban regions was noted. Living on farms resulted in lower sensitization prevalence to mite and cat allergens, even though exposure to mites was significantly elevated. The presence of cats was associated with a lower sensitization rate and IgE levels to cat and mite allergens, and less frequent allergic diseases. Cleaning did not impact allergen concentrations, while IgE reactivity to mites and allergic diseases were more pronounced when living in cleaner homes. CONCLUSION Allergen exposure to indoor allergens was influenced by setting of homes. Living in a farm environment and having a cat at home showed a protective effect for IgE sensitization and allergies. This cross-sectional study in combination with hereditary and lifestyle factors enables development of risk schemes for a more efficient management and potential prevention of allergic diseases.
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Affiliation(s)
- Teresa Stemeseder
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Bettina Schweidler
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Patrick Doppler
- Department of Mathematics, University of Salzburg, Salzburg, Austria
| | - Eva Klinglmayr
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Stephanie Moser
- School of Education, University of Salzburg, Salzburg, Austria
- TUM School of Education, Technical University of Munich, Munich, Germany
| | - Lisa Lueftenegger
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
- Biomedical Sciences, Salzburg University of Applied Sciences, Puch/Salzburg, Austria
| | - Martin Himly
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Roland Lang
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Joerg Zumbach
- Department of Mathematics, University of Salzburg, Salzburg, Austria
| | - Gertie J. Oostingh
- Biomedical Sciences, Salzburg University of Applied Sciences, Puch/Salzburg, Austria
| | - Thomas Hawranek
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Arne C. Bathke
- Department of Mathematics, University of Salzburg, Salzburg, Austria
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Zhu Z, Wang G, Yang F, Cao W, Mao R, Du X, Zhang X, Li C, Li D, Zhang K, Shu H, Liu X, Zheng H. Foot-and-Mouth Disease Virus Viroporin 2B Antagonizes RIG-I-Mediated Antiviral Effects by Inhibition of Its Protein Expression. J Virol 2016; 90:11106-11121. [PMID: 27707918 PMCID: PMC5126369 DOI: 10.1128/jvi.01310-16] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/25/2016] [Indexed: 12/26/2022] Open
Abstract
The role of retinoic acid-inducible gene I (RIG-I) in foot-and-mouth disease virus (FMDV)-infected cells remains unknown. Here, we showed that RIG-I inhibits FMDV replication in host cells. FMDV infection increased the transcription of RIG-I, while it decreased RIG-I protein expression. A detailed analysis revealed that FMDV leader proteinase (Lpro), as well as 3C proteinase (3Cpro) and 2B protein, decreased RIG-I protein expression. Lpro and 3Cpro are viral proteinases that can cleave various host proteins and are responsible for several of the viral polyprotein cleavages. However, for the first time, we observed 2B-induced reduction of host protein. Further studies showed that 2B-mediated reduction of RIG-I is specific to FMDV, but not other picornaviruses, including encephalomyocarditis virus, enterovirus 71, and coxsackievirus A16. Moreover, we found the decreased protein level of RIG-I is independent of the cleavage of eukaryotic translation initiation factor 4 gamma, the induction of cellular apoptosis, or the association of proteasome, lysosome, and caspase pathways. A direct interaction was observed between RIG-I and 2B. The carboxyl-terminal amino acids 105 to 114 and amino acids 135 to 144 of 2B were essential for the reduction of RIG-I, while residues 105 to 114 were required for the interaction. These data suggest the antiviral role of RIG-I against FMDV and a novel antagonistic mechanism of FMDV that is mediated by 2B protein. IMPORTANCE This study demonstrated that RIG-I could suppress FMDV replication during virus infection. FMDV infection increased the transcriptional expression of RIG-I, while it decreased RIG-I protein expression. FMDV 2B protein interacted with RIG-I and induced reduction of RIG-I. 2B-induced reduction of RIG-I was independent of the induction of the cleavage of eukaryotic translation initiation factor 4 gamma or cellular apoptosis. In addition, proteasome, lysosome, and caspase pathways were not involved in this process. This study provides new insight into the immune evasion mediated by FMDV and identifies 2B as an antagonistic factor for FMDV to evade the antiviral response.
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Affiliation(s)
- Zixiang Zhu
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Guoqing Wang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Fan Yang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Weijun Cao
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Ruoqing Mao
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoli Du
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiangle Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Chuntian Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Dan Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Keshan Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hongbing Shu
- Collaborative Innovation Center for Viral Immunology, Medical Research Institute, Wuhan University, Wuhan, China
| | - Xiangtao Liu
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Haixue Zheng
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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Liu HM, Ferrington DA, Baumann CW, Thompson LV. Denervation-Induced Activation of the Standard Proteasome and Immunoproteasome. PLoS One 2016; 11:e0166831. [PMID: 27875560 PMCID: PMC5119786 DOI: 10.1371/journal.pone.0166831] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 11/05/2016] [Indexed: 01/07/2023] Open
Abstract
The standard 26S proteasome is responsible for the majority of myofibrillar protein degradation leading to muscle atrophy. The immunoproteasome is an inducible form of the proteasome. While its function has been linked to conditions of atrophy, its contribution to muscle proteolysis remains unclear. Therefore, the purpose of this study was to determine if the immunoproteasome plays a role in skeletal muscle atrophy induced by denervation. Adult male C57BL/6 wild type (WT) and immunoproteasome knockout lmp7-/-/mecl-1-/- (L7M1) mice underwent tibial nerve transection on the left hindlimb for either 7 or 14 days, while control mice did not undergo surgery. Proteasome activity (caspase-, chymotrypsin-, and trypsin- like), protein content of standard proteasome (β1, β5 and β2) and immunoproteasome (LMP2, LMP7 and MECL-1) catalytic subunits were determined in the gastrocnemius muscle. Denervation induced significant atrophy and was accompanied by increased activities and protein content of the catalytic subunits in both WT and L7M1 mice. Although denervation resulted in a similar degree of muscle atrophy between strains, the mice lacking two immunoproteasome subunits showed a differential response in the extent and duration of proteasome features, including activities and content of the β1, β5 and LMP2 catalytic subunits. The results indicate that immunoproteasome deficiency alters the proteasome’s composition and activities. However, the immunoproteasome does not appear to be essential for muscle atrophy induced by denervation.
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Affiliation(s)
- Haiming M. Liu
- Department of Physical Medicine and Rehabilitation, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Deborah A. Ferrington
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Cory W. Baumann
- Department of Physical Medicine and Rehabilitation, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - LaDora V. Thompson
- Department of Physical Medicine and Rehabilitation, University of Minnesota, Minneapolis, Minnesota, United States of America
- * E-mail:
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Xie Y, Gao P, Li Z. A Recombinant Adenovirus Expressing P12A and 3C Protein of the Type O Foot-and-Mouth Disease Virus Stimulates Systemic and Mucosal Immune Responses in Mice. Biomed Res Int 2016; 2016:7849203. [PMID: 27478836 PMCID: PMC4958421 DOI: 10.1155/2016/7849203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/30/2016] [Accepted: 06/06/2016] [Indexed: 11/27/2022]
Abstract
Foot-and-mouth disease (FMD) is a highly contagious livestock disease of cloven-hoofed animals which causes severe economic losses. The replication-deficient, human adenovirus-vectored FMD vaccine has been proven effective against FMD. However, the role of T-cell-mediated antiviral responses and the mucosae-mediated antiviral responses induced by the adenovirus-vectored FMD vaccine was rarely examined. Here, the capsid protein precursor P1-2A and viral protease 3C of the type O FMDV were expressed in replicative-deficient human adenovirus type 5 vector. BALB/c mice immunized intramuscularly and intraperitoneally with recombinant adenovirus rAdv-P12A3C elicited higher FMDV-specific IgG antibodies, IFN-γ, and IL-4 cytokines than those in mice immunized with inactivated FMDV vaccine. Moreover, BALB/c mice immunized with recombinant adenovirus rAdv-P12A3C by oral and intraocular-nasal immunization induced high FMDV-specific IgA antibodies. These results show that the recombinant adenovirus rAdv-P12A3C could resist FMDV comprehensively. This study highlights the potential of rAdv-P12A3C to serve as a type O FMDV vaccine.
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Affiliation(s)
- Yinli Xie
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Peng Gao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
| | - Zhiyong Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
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Changklungmoa N, Phoinok N, Yencham C, Sobhon P, Kueakhai P. Vaccine potential of recombinant cathepsinL1G against Fasciola gigantica in mice. Vet Parasitol 2016; 226:124-31. [PMID: 27514897 DOI: 10.1016/j.vetpar.2016.07.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/29/2016] [Accepted: 07/08/2016] [Indexed: 11/18/2022]
Abstract
In this study, we characterized and investigated the vaccine potential of FgCatL1G against Fasciola gigantica infection in mice. Recombinant mature FgCatL1G (rmFgCatL1G) was expressed in Escherichia coli BL21. The vaccination was performed in Imprinting Control Region (ICR) mice (n=10) by subcutaneous injection with 50μg of rmFgCatL1G combined with Freund's adjuvant. Two weeks after the second boost, mice were infected with 15 metacercariae by the oral route. The percents of protection of rmFgCatL1G vaccine were estimated to be 56.5% and 58.3% when compared with non vaccinated-infected and adjuvant-infected controls, respectively. Antibodies in the immune sera of vaccinated mice were shown by immunoblot to react with the native FgCatL1s in the extract of all stages of parasites and rmFgCatL1H, recombinant pro - FgCatL1 (rpFgCatL1). By immunohistochemistry, the immune sera also reacted with FgCatL1s in the caecal epithelial cells of the parasites. The levels of IgG1 and IgG2a in the immune sera, which are indicative of Th2 and Th1 immune responses, were also increased with IgG1 predominating. The levels of serum glutamic oxaloacetic transaminase (SGOT) and serum glutamic pyruvic transaminase (SGPT) in rmFgCatL1G-immunized group showed no significant difference from the control groups, but pathological lesions of livers in rmFgCatL1G-immunized group showed significant decrease when compared to the control groups. This study indicates that rmFgCatL1G has a vaccine potential against F. gigantica in mice, and this potential will be tested in larger livestock animals.
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Affiliation(s)
- Narin Changklungmoa
- Faculty of Allied Health Sciences, Burapha University, Long-Hard Bangsaen Road, Mueang District, Chonburi 20131, Thailand
| | - Natthacha Phoinok
- Faculty of Allied Health Sciences, Burapha University, Long-Hard Bangsaen Road, Mueang District, Chonburi 20131, Thailand
| | - Chonthicha Yencham
- Faculty of Allied Health Sciences, Burapha University, Long-Hard Bangsaen Road, Mueang District, Chonburi 20131, Thailand
| | - Prasert Sobhon
- Faculty of Allied Health Sciences, Burapha University, Long-Hard Bangsaen Road, Mueang District, Chonburi 20131, Thailand; Department of Anatomy, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok 10400, Thailand
| | - Pornanan Kueakhai
- Faculty of Allied Health Sciences, Burapha University, Long-Hard Bangsaen Road, Mueang District, Chonburi 20131, Thailand.
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Washington MA. A20 modulation: a potential biological threat that can be mitigated by immunohistochemistry. MLO Med Lab Obs 2016; 48:16-17. [PMID: 26983294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Maelfait J, Roose K, Vereecke L, Mc Guire C, Sze M, Schuijs MJ, Willart M, Ibañez LI, Hammad H, Lambrecht BN, Beyaert R, Saelens X, van Loo G. A20 Deficiency in Lung Epithelial Cells Protects against Influenza A Virus Infection. PLoS Pathog 2016; 12:e1005410. [PMID: 26815999 PMCID: PMC4731390 DOI: 10.1371/journal.ppat.1005410] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 12/31/2015] [Indexed: 12/24/2022] Open
Abstract
A20 negatively regulates multiple inflammatory signalling pathways. We here addressed the role of A20 in club cells (also known as Clara cells) of the bronchial epithelium in their response to influenza A virus infection. Club cells provide a niche for influenza virus replication, but little is known about the functions of these cells in antiviral immunity. Using airway epithelial cell-specific A20 knockout (A20AEC-KO) mice, we show that A20 in club cells critically controls innate immune responses upon TNF or double stranded RNA stimulation. Surprisingly, A20AEC-KO mice are better protected against influenza A virus challenge than their wild type littermates. This phenotype is not due to decreased viral replication. Instead host innate and adaptive immune responses and lung damage are reduced in A20AEC-KO mice. These attenuated responses correlate with a dampened cytotoxic T cell (CTL) response at later stages during infection, indicating that A20AEC-KO mice are better equipped to tolerate Influenza A virus infection. Expression of the chemokine CCL2 (also named MCP-1) is particularly suppressed in the lungs of A20AEC-KO mice during later stages of infection. When A20AEC-KO mice were treated with recombinant CCL2 the protective effect was abrogated demonstrating the crucial contribution of this chemokine to the protection of A20AEC-KO mice to Influenza A virus infection. Taken together, we propose a mechanism of action by which A20 expression in club cells controls inflammation and antiviral CTL responses in response to influenza virus infection. Influenza viruses are a major public health threat. Each year, the typical seasonal flu epidemic affects millions of people with sometimes fatal outcomes, especially in high risk groups such as young children and elderly. The sporadic pandemic outbreaks can have even more disastrous consequences. The protein A20 is an important negative regulator of antiviral immune responses. We show that the specific deletion of A20 in bronchial epithelial cells improves the protection against influenza virus infections. This increased protection correlates with a dampened pulmonary cytotoxic T cell response and a strongly suppressed expression of the chemokine CCL2 during later stages of infection.
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Affiliation(s)
- Jonathan Maelfait
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kenny Roose
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Lars Vereecke
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Conor Mc Guire
- Medical Biotechnology Center, VIB, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Mozes Sze
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Martijn J Schuijs
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Monique Willart
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Lorena Itati Ibañez
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Hamida Hammad
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Bart N Lambrecht
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Xavier Saelens
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Geert van Loo
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Zhan XD, Wu H, Hu HM, Li CP. [Research on dust mite allergen gathered from filters of air-conditioners]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2015; 27:612-633. [PMID: 27097480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To discuss the relation between the dust mite allergen (Der) in air-conditioner filters and the asthma attack. METHODS The dust samples were collected from the filters of air-conditioners in dining rooms, shopping malls, hotels and households, respectively. The concentrations of Der f 1 and Der p1 were detected by ELISA, and the dust mite immune activities were determined by dot-ELISA. RESULTS The concentrations of Der f 1 in the dining rooms, shopping malls, hotels and households were 1.52, 1.24, 1.31 µg/g and 1.46 µg/g respectively, and the concentrations of Der p 1 were 1.23, 1.12, 1.16 µg/ g and 1.18 µg, respectively. One hour after the running of air-conditioners, the concentrations of Der f 1 and Der p 1 in the air were higher than those before the running of air-conditioners, and the differences were significant (P < 0.05). Additionally, the dot-ELISA results revealed that the allergen extracted from the dust was capable of reacting with IgE from the sera of asthma mice allergic to dust mites. CONCLUSION Der f 1 and Der p 1 appear abundantly in the filters of air-conditioners in domestic houses in Wuhu City, and the allergens can induce asthma.
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Bodoki L, Nagy-Vincze M, Griger Z, Betteridge Z, Szöllősi L, Jobanputra R, Dankó K. Rare myositis-specific autoantibody associations among Hungarian patients with idiopathic inflammatory myopathy. Acta Reumatol Port 2015; 40:337-347. [PMID: 26922197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Idiopathic inflammatory myopathies are systemic, chronic autoimmune diseases characterized by symmetrical, proximal muscle weakness. Homogeneous groups present with similar symptoms. The response to therapy and prognosis could be facilitated by myositis-specific autoantibodies, and in this way, give rise to immunoserological classification. The myositis-specific autoantibodies are directed against specific proteins found in the cytoplasm or in the nucleus of the cells. To date, literature suggests the rarity of the co-existence of two myositis-specific autoantibodies. In this study the authors highlight rare associations of myositis-specific autoantibodies. Three hundred and thirty-seven Hungarian patients with polymyositis or dermatomyositis were studied. Their clinical findings were noted retrospectively. Specific blood tests identified six patients with the rare co-existence of myositis-specific autoantibodies, anti-Jo-1 and anti-SRP, anti-Jo-1 and anti-Mi-2, anti-Mi-2 and anti-PL-12, anti-Mi-2 and anti-SRP, and anti-SRP and anti-PL-7, respectively. This case review aims to identify the clinical importance of these rare associations and their place within the immunoserological classification.
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Moon KY, Lee PH, Kim BG, Park CS, Leikauf GD, Jang AS. Claudin 5 in a murine model of allergic asthma: Its implication and response to steroid treatment. J Allergy Clin Immunol 2015; 136:1694-1696.e5. [PMID: 26409663 DOI: 10.1016/j.jaci.2015.08.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/28/2015] [Accepted: 08/03/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Kuk-Young Moon
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Pureun-Haneul Lee
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Byeong-Gon Kim
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Choon-Sik Park
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - George D Leikauf
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pa
| | - An-Soo Jang
- Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
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Yi MH, Kim HP, Jeong KY, Kim CR, Kim TY, Yong TS. House dust mite allergen Der f 1 induces IL-8 in human basophilic cells via ROS-ERK and p38 signal pathways. Cytokine 2015; 75:356-64. [PMID: 26194066 DOI: 10.1016/j.cyto.2015.07.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 06/17/2015] [Accepted: 07/09/2015] [Indexed: 12/15/2022]
Abstract
Der f 1, a major house dust mite allergen and member of the papain-like cysteine protease family, can provoke immune responses with its proteolytic activity. To understand the role of Der f 1 in inflammatory immune responses, we studied the mechanism of the regulation of interleukin (IL)-8 expressions in human basophilic cell KU812 by proteolytically active recombinant Der f 1. Not only production of IL-8 mRNA was induced but also the DNA binding activity of activator protein-1 (AP-1) and phosphorylation of NF-κB p65 were increased in Der f 1-treated KU812. Furthermore, Der f 1 induction of IL-8 expression was sensitive to pharmacological inhibition of ERK and p38 mitogen activated protein kinase (MAPK) pathways. Der f 1 also activated ERK and p38 MAPK phosphorylation and rapidly induced reactive oxygen species (ROS) production. The antioxidant N-acetyl-cysteine (NAC) inhibited phosphorylation of ERK, but not p38, suggesting that secretion of IL-8 in KU812 cells treated with Der f 1 is dependent on ROS, ERK MAPK and p38 MAPK. We describe the mechanism of Der f 1-induced IL-8 secretion from human basophilic cells, which are thought to be important for allergic inflammation independent of IgE antibodies. These findings improve our understanding of the inflammatory immune response in human basophils to protease allergens.
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Affiliation(s)
- Myung-hee Yi
- Department of Environmental Medical Biology and Arthropods of Medical Importance Resource Bank, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Hyoung-Pyo Kim
- Department of Environmental Medical Biology and Arthropods of Medical Importance Resource Bank, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyoung Yong Jeong
- Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Chung-Ryul Kim
- Department of Environmental Medical Biology and Arthropods of Medical Importance Resource Bank, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Microbiology, Ajou University School of Medicine, Suwon 443-721, Republic of Korea
| | - Tae Yun Kim
- Department of Environmental Medical Biology and Arthropods of Medical Importance Resource Bank, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Tai-Soon Yong
- Department of Environmental Medical Biology and Arthropods of Medical Importance Resource Bank, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Beerli RR, Hell T, Merkel AS, Grawunder U. Sortase Enzyme-Mediated Generation of Site-Specifically Conjugated Antibody Drug Conjugates with High In Vitro and In Vivo Potency. PLoS One 2015; 10:e0131177. [PMID: 26132162 PMCID: PMC4488448 DOI: 10.1371/journal.pone.0131177] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/31/2015] [Indexed: 01/16/2023] Open
Abstract
Antibody drug conjugates (ADCs) have recently been proven to be highly potent anti-tumor drugs, typically exceeding the efficacy of conventional monoclonal antibodies (mAbs). ADCs are currently produced by chemical conjugation of a small-molecule toxin to the mAb through lysine or cysteine side chains. This leads to heterogeneous mixtures of ADCs in which variable numbers of drugs are conjugated to individual antibodies and in which the site of conjugation cannot be defined. Consequently, there is currently significant interest in further development of drug conjugation technologies, with a particular focus on site-specific payload conjugation. Here, we present an enzymatic conjugation platform based on the S. aureus sortase A-mediated transpeptidation reaction, allowing the efficient generation of ADCs with toxins conjugated to pre-defined sites at pre-defined drug-to-antibody ratios. For this, two modifications were introduced: first, immunoglobulin heavy (IgH) and light (IgL) chains were modified at their C-termini by addition of the sortase A recognition motif LPETG, and second, the small molecule tubulin polymerization inhibitors monomethylauristatin E (MMAE) and maytansine were modified by addition of a pentaglycine peptide, thus making them suitable substrates for sortase A-mediated transpeptidation. We demonstrate efficient generation and characterization of the anti-CD30 ADC Ac10-vcPAB-MMAE, an enzymatically conjugated counterpart of brentuximab vedotin (Adcetris), as well as several anti-HER-2 ADCs including trastuzumab-maytansine, the counterpart of trastuzumab emtansine (Kadcyla). ADCs generated in this manner were found to display in vitro cell killing activities indistinguishable from the classic conjugates. Further, when tested in vivo in a HER-2-overexpressing ovarian cancer xenograft mouse model, enzymatically generated trastuzumab-maytansine was found to lead to complete regression of established tumors, similar to Kadcyla.
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MESH Headings
- Ado-Trastuzumab Emtansine
- Aminoacyltransferases/chemistry
- Aminoacyltransferases/immunology
- Animals
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal, Humanized/chemistry
- Antibodies, Monoclonal, Humanized/immunology
- Antibodies, Monoclonal, Humanized/pharmacology
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/immunology
- Antineoplastic Agents/pharmacology
- Bacterial Proteins/chemistry
- Bacterial Proteins/immunology
- Brentuximab Vedotin
- Cysteine Endopeptidases/chemistry
- Cysteine Endopeptidases/immunology
- Female
- Humans
- Immunoconjugates/chemistry
- Immunoconjugates/immunology
- Immunoconjugates/pharmacology
- Ki-1 Antigen/antagonists & inhibitors
- Ki-1 Antigen/genetics
- Ki-1 Antigen/immunology
- Maytansine/analogs & derivatives
- Maytansine/chemistry
- Maytansine/immunology
- Maytansine/pharmacology
- Mice
- Mice, Nude
- Oligopeptides/chemistry
- Oligopeptides/immunology
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/immunology
- Ovarian Neoplasms/pathology
- Protein Engineering
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Staphylococcus aureus/chemistry
- Staphylococcus aureus/enzymology
- Trastuzumab
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Roger R. Beerli
- NBE-Therapeutics AG, Hochbergerstrasse, Basel, Switzerland
- * E-mail:
| | - Tamara Hell
- NBE-Therapeutics AG, Hochbergerstrasse, Basel, Switzerland
| | - Anna S. Merkel
- NBE-Therapeutics AG, Hochbergerstrasse, Basel, Switzerland
| | - Ulf Grawunder
- NBE-Therapeutics AG, Hochbergerstrasse, Basel, Switzerland
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Lim FL, Hashim Z, Than LTL, Md Said S, Hisham Hashim J, Norbäck D. Asthma, Airway Symptoms and Rhinitis in Office Workers in Malaysia: Associations with House Dust Mite (HDM) Allergy, Cat Allergy and Levels of House Dust Mite Allergens in Office Dust. PLoS One 2015; 10:e0124905. [PMID: 25923543 PMCID: PMC4414577 DOI: 10.1371/journal.pone.0124905] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 03/08/2015] [Indexed: 11/18/2022] Open
Abstract
A prevalence study was conducted among office workers in Malaysia (N= 695). The aim of this study was to examine associations between asthma, airway symptoms, rhinitis and house dust mites (HDM) and cat allergy and HDM levels in office dust. Medical data was collected by a questionnaire. Skin prick tests were performed for HDM allergens (Dermatophagoides pteronyssinus, Dermatophagoides farinae) and cat allergen Felis domesticus. Indoor temperature and relative air humidity (RH) were measured in the offices and vacuumed dust samples were analyzed for HDM allergens. The prevalence of D. pteronyssinus, D. farinae and cat allergy were 50.3%, 49.0% and 25.5% respectively. Totally 9.6% had doctor-diagnosed asthma, 15.5% had current wheeze and 53.0% had current rhinitis. The Der p 1 (from D. pteronyssinus) and Der f 1 (from D. farinae) allergens levels in dust were 556 ng/g and 658 ng/g respectively. Statistical analysis was conducted by multilevel logistic regression, adjusting for age, gender, current smoking, HDM or cat allergy, home dampness and recent indoor painting at home. Office workers with HDM allergy had more wheeze (p= 0.035), any airway symptoms (p= 0.032), doctor-diagnosed asthma (p= 0.005), current asthma (p= 0.007), current rhinitis (p= 0.021) and rhinoconjuctivitis (p< 0.001). Cat allergy was associated with wheeze (p= 0.021), wheeze when not having a cold (p= 0.033), any airway symptoms (p= 0.034), doctor-diagnosed asthma (p= 0.010), current asthma (p= 0.020) and nasal allergy medication (p= 0.042). Der f 1 level in dust was associated with daytime breathlessness (p= 0.033) especially among those with HDM allergy. Der f 1 levels were correlated with indoor temperature (p< 0.001) and inversely correlated with RH (p< 0.001). In conclusion, HDM and cat allergies were common and independently associated with asthma, airway symptoms and rhinitis. Der f 1 allergen can be a risk factor for daytime breathlessness.
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Affiliation(s)
- Fang Lee Lim
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Zailina Hashim
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
- * E-mail:
| | - Leslie Thian Lung Than
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Salmiah Md Said
- Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Jamal Hisham Hashim
- United Nations University-International Institute for Global Health (UNU-IIGH), Kuala Lumpur, Malaysia
- Department of Community Health, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Dan Norbäck
- Uppsala University, Department of Medical Science, Occupational and Environmental Medicine, University Hospital, Uppsala, Sweden
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Orlova AS, Liupina IV, Abaturova SB, Sharova NP. [Features of immune proteasome expression in the development of rat central nervous system]. Bioorg Khim 2015; 40:703-11. [PMID: 25895367 DOI: 10.1134/s1068162014060119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Formation of the central nervous system in ontogeny and function in adult mammals are controlled by universal ubiquitin-proteasome proteolytic system. The aim of this work was to study the dynamics of expression of immune proteasomes in comparison with the dynamics of ChLA and CLA proteasome and expression of the transcription factor Zif268 in the structures of the brain (cortex, hippocampus, and brainstem) in embryonic (E19, E21 days of embryonic development) and early postnatal (P1, P3, P4, P5, P7, P15 days of post-natal development) development in rats. ChLA and CLA in clarified homogenates of rat brain structures were determined by hydrolysis of fluorogenic commercial oligopeptides Suc-LLVY-AMC and Z-LLG-AMC, respectively. In the cortex and hippocampus of the brain was observed upregulation of immune subunits LMP7 during the active formation of biochemical mediatory structure and efferent neuronal projections at the period P7-P15. In the cerebral cortex during this period ChLA and CLA also are increased. In all structures of the brain the LMP2 immune subunits content was significantly increased at the period P7-P15. Contents of proteolytic constitutive subunit β1 in all structures decreased by P4 compare to P1 levels and was increased on P15 relative to the P1 levels. However, the level of expression of proteolytic constitutive subunit β5 increased in cortex, hippocampus and brainstem from E21 and reached maximum values on P3, P5 and P1, respectively with a sharp decrease to P7 in all studied structures. In all structures expression of LM P2 immune subunits and β1 constitutive subunits increased simultaneously with LMP7 immune subunits and sharply on P15. Also shown a positive correlation of increased expression regulator PA28 and constitutive β5 subunits in the hippocampus during the period P3-P5 and in the brainstem at the period P1-P5. The peculiarity of the studied brain regions during P7-P15 of rat early development is a correlation of expression of immune subunits LMP2 and LMP7 proteasome and ChLA with the expression of the transcription factor Zif268. Probably immune proteasome plays an important role in the regulation of key biochemical processes in the early ontogenesis of the central nervous system and are necessary for the emergence and realization of synaptic plasticity in the brain structures studied in rats.
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Xu HF, Zhu HB, Xu PF, Li CP, Wang KX. [Effect of immunotherapy of recombinant chimeric epitopes of major allergen group 1 from Dermatophagoides farina on asthma of mice]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2015; 27:49-52. [PMID: 26094414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the effect of immunotherapy of recombinant chimeric epitopes of major allergen group 1 from Dermatophagoides farina on asthma of mice. METHODS Forty mice were randomly divided into 4 groups: a negative control group, an asthma group, an immunotherapy group of Der f 1, and an immunotherapy group of Der f lA. On the 1st, 7th and 14th day, the mice in the asthma group, immunotherapy group of Der f 1, and immunotherapy group of Der f 1A were injected intraperitoneally with the extract of D. farina 3 times to sensitize; and on the 21st day, the atomized inhalation was carried out for 7 days. In the control group, phosphate buffer solution (PBS) was applied for sensitization and inhalation. In the immunotherapy groups, Der f 1 and Der f 1A were applied to carry out the specific immunotherapy respectively for 30 min before the inhalation. Then, the leukocytes in the bronchoalveolar lavage fluid (BALF) were numbered and the pathological sections of lung tissues were observed; IL-5 and IFN-γ in BALF and spleen cell culture supernatants (SCCS) as well as the specific IgE, IgG2a in the sera were detected. RESULTS Compared with the asthma group, the lung inflammation of mice in the immunotherapy groups was lightened, and the total numbers of leukocytes in BALF were significantly reduced; IL-5 was significantly reduced and IFN-γ was significantly increased in BALF and SCCS of mice in the immunotherapy groups; and the specific IgE was significantly reduced and IgG2a was significantly increased in the sera of mice in the immunotherapy groups (all P< 0.01). CONCLUSION The recombinant chimeric epitopes of major allergen group 1 from D. farina could effectively relieve the symptom of asthma in mice, so as to provide the evidence for specific immunotherapy.
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Zhao B, Jiang Y, Diao J, Li N, Lu W, Li C. [Construction of a vector encoding T-cell epitopes of Dermatophagoides pteronyssinus major allergen group 1 as a vaccine delivered by MHC class II pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2015; 35:174-178. [PMID: 25736108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To construct a vector encoding T-cell epitopes of major allergen group 1 of Dermatophagoides pteronyssinus as a vaccine delivered by MHC class II pathway. METHODS The nucleotide sequences of the 3 target genes were synthesized, including TAT, IhC and the recombinant fragment of Der p 1 encoding 3 T-cell epitopes. After amplification of the 3 target fragments by PCR and digestion with corresponding restriction endonucleases, the recombinant gene TAT-IhC-Der p 1-3T was ligated using T4 DNA ligase and inserted into the prokaryotic expression vector pET28a(+) to construct the recombinant plasmid pET-28a(+)-TAT-IhC-Der p 1-3T, which was confirmed by digestion with restriction endonucleases and sequencing. The recombinant vector was transformed into E. coli strain BL21 (DE3) and induced with IPTG, and the induced protein TAT-IhC-Der p 1-3T was detected by SDS-PAGE. After purification, the recombinant protein was confirmed by Western blotting and its allergenicity tested using IgE-binding assay. RESULTS The recombinant plasmid pET-28a-TAT-IhC-Der p 1-3T was successfully constructed as confirmed by restriction endonuclease digestion and sequencing and the expression of the recombinant protein TAT-IhC-Der p 1-3T was induced in E. coli. Western blotting verified successfull purification of the target protein, which showed a stronger IgE-binding ability than Der p 1. CONCLUSION We successfully constructed a recombinant expression vector pET-28a-TAT-IhC-Der p 1-3T expressing a T-cell epitope vaccine delivered by MHC II pathway with strong IgE-binding ability, which provides a basis for further study on specific immunotherapy via MHC class II pathway.
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Affiliation(s)
- Beibei Zhao
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, China.E-mail:
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Call EK, Goh YJ, Selle K, Klaenhammer TR, O'Flaherty S. Sortase-deficient lactobacilli: effect on immunomodulation and gut retention. Microbiology (Reading) 2015; 161. [PMID: 25500495 PMCID: PMC4811640 DOI: 10.1099/mic.0.000007-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Surface proteins of probiotic microbes, including Lactobacillus acidophilus and Lactobacillus gasseri, are believed to promote retention in the gut and mediate host-bacterial communications. Sortase, an enzyme that covalently couples a subset of extracellular proteins containing an LPXTG motif to the cell surface, is of particular interest in characterizing bacterial adherence and communication with the mucosal immune system. A sortase gene, srtA, was identified in L. acidophilus NCFM (LBA1244) and L. gasseri ATCC 33323 (LGAS_0825). Additionally, eight and six intact sortase-dependent proteins were predicted in L. acidophilus and L. gasseri, respectively. Due to the role of sortase in coupling these proteins to the cell wall, ΔsrtA deletion mutants of L. acidophilus and L. gasseri were created using the upp-based counterselective gene replacement system. Inactivation of sortase did not cause significant alteration in growth or survival in simulated gastrointestinal juices. Meanwhile, both ΔsrtA mutants showed decreased adhesion to porcine mucin in vitro. Murine dendritic cells exposed to the ΔsrtA mutant of L. acidophilus or L. gasseri induced lower levels of pro-inflammatory cytokines TNF-α and IL-12, respectively, compared with the parent strains. In vivo co-colonization of the L. acidophilus ΔsrtA mutant and its parent strain in germ-free 129S6/SvEv mice resulted in a significant one-log reduction of the ΔsrtA mutant population. Additionally, a similar reduction of the ΔsrtA mutant was observed in the caecum. This study shows for the first time that sortase-dependent proteins contribute to gut retention of probiotic microbes in the gastrointestinal tract.
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Affiliation(s)
- Emma K Call
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Yong Jun Goh
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Kurt Selle
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Todd R Klaenhammer
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Sarah O'Flaherty
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
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Zeng G, Luo W, Zheng P, Wei N, Huang H, Sun B, Zhao X. Component-Resolved Diagnostic Study of Dermatophagoides Pteronyssinus Major Allergen Molecules in a Southern Chinese Cohort. J Investig Allergol Clin Immunol 2015; 25:343-351. [PMID: 26727763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Little is known about component-resolved diagnosis (CRD) for Dermatophagoides pteronyssinus (Der p) sensitization in the Chinese population. We aimed to evaluate sensitization to Der p components in southern China. METHODS Two-hundred immunotherapy-naïve patients with asthma and/or rhinitis positive to specific IgE (sIgE) against Der p extract, along with 20 Der p-negative nonallergic healthy controls, were tested for sIgE against Der p 1, Der p 2, and Der p 10 using ImmunoCAP 100. Seventy-five were further examined with the ImmunoCAP Immuno Solid-phase Allergen Chip (ISAC). Der p 10-positive patients were also tested for sIgE against crude extracts of cockroach, moth, and shrimp. RESULTS In total, 183 (91.5%) of the 200 patients were sensitized to Der p 1 and/or Der p 2. The proportion of positive results and the median level of s1gE against Der p 1 were higher in children than in adults. Der p 1 and Der p 2 correlated with Der p in sIgE levels. ImmunoCAP ISAC demonstrated 100% specificity and 84% sensitivity in detecting Der p 1, Der p 2, and Der p 10 compared with ImmunoCAP 100. Sensitization to Der p 10 correlated well with sIgE to shrimp, moths, cockroaches, Pen m 1, Bla g 7, and Ani s 3. CONCLUSIONS The detection of Der p 1 and Der p 2 provided a good reflection of atopy to Der p in a Chinese cohort. Sensitization to Der p 10 may result from cross-reactivity with seafood and cockroaches in coastal southern China. ImmunoCAP ISAC may be a useful tool for CRD, with comparable performance to ImmunoCAP 100.
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Hand LE, Usan P, Cooper GJS, Xu LY, Ammori B, Cunningham PS, Aghamohammadzadeh R, Soran H, Greenstein A, Loudon ASI, Bechtold DA, Ray DW. Adiponectin induces A20 expression in adipose tissue to confer metabolic benefit. Diabetes 2015; 64:128-36. [PMID: 25190567 PMCID: PMC4396702 DOI: 10.2337/db13-1835] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Obesity is a major risk factor for metabolic disease, with white adipose tissue (WAT) inflammation emerging as a key underlying pathology. We detail that mice lacking Reverbα exhibit enhanced fat storage without the predicted increased WAT inflammation or loss of insulin sensitivity. In contrast to most animal models of obesity and obese human patients, Reverbα(-/-) mice exhibit elevated serum adiponectin levels and increased adiponectin secretion from WAT explants in vitro, highlighting a potential anti-inflammatory role of this adipokine in hypertrophic WAT. Indeed, adiponectin was found to suppress primary macrophage responses to lipopolysaccharide and proinflammatory fatty acids, and this suppression depended on glycogen synthase kinase 3β activation and induction of A20. Attenuated inflammatory responses in Reverbα(-/-) WAT depots were associated with tonic elevation of A20 protein and ex vivo shown to depend on A20. We also demonstrate that adipose A20 expression in obese human subjects exhibits a negative correlation with measures of insulin sensitivity. Furthermore, bariatric surgery-induced weight loss was accompanied by enhanced WAT A20 expression, which is positively correlated with increased serum adiponectin and improved metabolic and inflammatory markers, including C-reactive protein. The findings identify A20 as a mediator of adiponectin anti-inflammatory action in WAT and a potential target for mitigating obesity-related pathology.
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Affiliation(s)
- Laura E Hand
- Faculty of Life Sciences, University of Manchester, Manchester, U.K
| | - Paola Usan
- Faculty of Medical and Health Sciences, University of Manchester, Manchester, U.K
| | - Garth J S Cooper
- Faculty of Medical and Health Sciences, University of Manchester, Manchester, U.K. School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Lance Y Xu
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Basil Ammori
- Centre for Advanced Discovery and Experimental Therapeutics, University of Manchester, Manchester, U.K
| | | | - Reza Aghamohammadzadeh
- Centre for Advanced Discovery and Experimental Therapeutics, University of Manchester, Manchester, U.K
| | - Handrean Soran
- Centre for Advanced Discovery and Experimental Therapeutics, University of Manchester, Manchester, U.K
| | - Adam Greenstein
- Centre for Advanced Discovery and Experimental Therapeutics, University of Manchester, Manchester, U.K
| | | | - David A Bechtold
- Faculty of Life Sciences, University of Manchester, Manchester, U.K.
| | - David W Ray
- Faculty of Medical and Health Sciences, University of Manchester, Manchester, U.K.
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Karakoc-Aydiner E, Eifan AO, Baris S, Gunay E, Akturk E, Akkoc T, Bahceciler NN, Barlan IB. Long-Term Effect of Sublingual and Subcutaneous Immunotherapy in Dust Mite-Allergic Children With Asthma/Rhinitis: A 3-Year Prospective Randomized Controlled Trial. J Investig Allergol Clin Immunol 2015; 25:334-342. [PMID: 26727762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Specific allergen immunotherapy is the only treatment modality that might change the natural course of allergic diseases in childhood. We sought to prospectively compare the long-term clinical and immunological effects of sublingual (SLIT) and subcutaneous (SCIT) immunotherapy compared with pharmacotherapy alone. METHODS In this single-center, prospective randomized controlled trial, 48 children with mild persistent asthma with/without rhinitis, monosensitized to house dust mites (HDMs) were followed for 3 years. At baseline and years 1 and 3 of follow-up, patients were evaluated and compared for total rhinitis (TRSS) and asthma (TASS) symptom scores, total symptom scores (TSS), total medication scores (TMS), safety profiles, skin-nasal-bronchial reactivity, and immunological parameters. RESULTS A significant reduction was observed in TASS for both HDM-SCIT and HDM-SLIT at year 3 of treatment compared with baseline and controls (P<.05 for both), with significant improvement in rhinitis symptoms for both groups compared with controls (P=.01 for both). TSS decreased significantly in both HDM-SCIT and HDM-SLIT at year 3 compared with baseline (P=.007 and P=.04, respectively) and controls (P<.01 for both). A significant reduction in TMS was observed in HDM-SCIT and HDM-SLIT compared with baseline and controls (P=.01 in all cases), with a reduction in skin reactivity to HDM (P<.05). Finally, a significant increase in allergen specific IgG4 was observed in the SCIT group at year 3 compared with baseline, the SLIT group, and controls (P<.001 in all cases). CONCLUSIONS HDM-sensitized asthmatic children treated for at least 3 years with either SCIT or SLIT showed sustained clinical improvement.
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Escribese MM, Gómez-Casado C, Barber D, Diaz-Perales A. Immune Polarization in Allergic Patients: Role of the Innate Immune System. J Investig Allergol Clin Immunol 2015; 25:251-258. [PMID: 26310039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Allergens come into contact with the immune system as components of a very diverse mixture. The most common sources are pollen grains, food, and waste. These sources contain a variety of immunomodulatory components that play a key role in the induction of allergic sensitization. The way allergen molecules bind to the cells of the immune system can determine the immune response. In order to better understand how allergic sensitization is triggered, we review the molecular mechanisms involved in the development of allergy and the role of immunomodulators in allergen recognition by innate cells.
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Minami T, Fukutomi Y, Lidholm J, Yasueda H, Saito A, Sekiya K, Tsuburai T, Maeda Y, Mori A, Taniguchi M, Hasegawa M, Akiyama K. IgE Abs to Der p 1 and Der p 2 as diagnostic markers of house dust mite allergy as defined by a bronchoprovocation test. Allergol Int 2015; 64:90-5. [PMID: 25572562 DOI: 10.1016/j.alit.2014.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/13/2014] [Accepted: 08/17/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Limited information is available regarding the clinical usefulness of measuring the levels of IgE to allergen components from house dust mites (HDMs) in the diagnosis of genuine HDM allergy. METHODS To evaluate the diagnostic usefulness of measuring levels of serum IgE antibodies (Abs) to allergen components from Dermatophagoides pteronyssinus (DP) as a predictor of immediate asthmatic response (IAR) to bronchoprovocation, we studied 55 DP-sensitized asthmatic patients who underwent a bronchoprovocation test using crude DP extract. The levels of IgE Abs to crude DP, nDer p 1, rDer p 2, and rDer p 10 in patients who showed IAR (n = 41) were compared with those in patients who showed no IAR (n = 14). RESULTS While the frequencies of positivity for IgE Abs to nDer p 1 and rDer p 2 among the entire study population were 89 and 86%, respectively, all patients with IAR tested positive for both of them with high IgE concentrations. The areas under the receiver operating characteristic curves for IgE to nDer p 1 and rDer p 2 as predictors of IAR were 0.913 and 0.906, respectively. The specificity of IgE to nDer p 1 and rDer p 2 was higher than IgE to crude DP even at low cut-off points. CONCLUSIONS IgE to nDer p 1 and/or rDer p 2 was highly predictive of allergen-induced IAR. These findings validate the clinical usefulness of measuring the levels of IgE to nDer p 1 and rDer p 2 as a diagnostic tool for genuine HDM allergy.
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Affiliation(s)
- Takafumi Minami
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Yuma Fukutomi
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan.
| | | | - Hiroshi Yasueda
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Akemi Saito
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Kiyoshi Sekiya
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Takahiro Tsuburai
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Yuji Maeda
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Akio Mori
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Masami Taniguchi
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Maki Hasegawa
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Kazuo Akiyama
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
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