1
|
Sio YY, Victoria Nanong GA, Lim JA, Matta SA, Say YH, Teh KF, Wong YR, Rawanan Shah SM, Reginald K, Chew FT. Sensitization to oil palm pollen associates with risks and severity of allergic diseases. World Allergy Organ J 2024; 17:100853. [PMID: 38235258 PMCID: PMC10792632 DOI: 10.1016/j.waojou.2023.100853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/11/2023] [Accepted: 11/25/2023] [Indexed: 01/19/2024] Open
Abstract
Background Elaeis guineensis (Ela g, oil palm) pollen is one of the most predominant species of inhalant allergens in the tropical Southeast Asia region; however, its association with the manifestation of allergic diseases remains largely unexplored. This study aimed to determine the sensitization pattern of oil palm pollen and associate this with the risk and severity of allergic diseases. Methods Participants were recruited as a part of the Singapore and Malaysia cross-sectional genetic and epidemiological study (SMCSGES). Two independent cohorts were recruited: n = 564 serum samples were collected and serological assessment was performed against a panel of 16 crude inhalant allergens including house dust mite, pet, insect, pollen, and fungal allergens; n = 13 652 Singapore/Malaysia Chinese young adults were recruited and skin prick test was used to assess oil palm sensitization, which was tested for its association with the risk and severity of asthma, allergic rhinitis (AR), and atopic dermatitis (AD). Results The sensitization rate of oil palm pollen is 9.6% in the n = 564 Singapore/Malaysia cohort. In the n = 13 652 Singapore/Malaysia Chinese cohort, oil palm sensitization significantly associates with increased risks of asthma (p = 1.34x10-4), AR (p = 2.91x10-13), and AD (p = 6.95x10-7). Asthmatic patients with oil palm sensitization have increased risks of wheezing (p = 0.00995), nocturnal cough (p = 0.0122), and exacerbations (p = 0.00139) in the past 12 months. AR patients with oil palm sensitization also have an increased risk of developing moderate-to-severe symptoms (p = 0.00113). Conclusions We have identified significant associations of oil palm sensitization with increased risks, exacerbations, and the severity of symptoms of allergic diseases in the tropical Southeast Asian region (Singapore/Malaysia).
Collapse
Affiliation(s)
- Yang Yie Sio
- Department of Biological Sciences, National University of Singapore, Singapore
| | | | - Jie Ann Lim
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Sri Anusha Matta
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Yee-How Say
- Department of Biological Sciences, National University of Singapore, Singapore
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Perak, Malaysia
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Keng Foo Teh
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Yi Ru Wong
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Smyrna Moti Rawanan Shah
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Kavita Reginald
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Malaysia
| | - Fook Tim Chew
- Department of Biological Sciences, National University of Singapore, Singapore
| |
Collapse
|
2
|
Yang YS, Xu ZQ, Zhu W, Zhu DX, Jiao YX, Zhang LS, Hou YB, Wei JF, Sun JL. Molecular and immunochemical characterization of profilin as major allergen from Platanus acerifolia pollen. Int Immunopharmacol 2022; 106:108601. [DOI: 10.1016/j.intimp.2022.108601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/10/2022] [Accepted: 01/30/2022] [Indexed: 01/03/2023]
|
3
|
Mares-Mejía I, García-Ramírez B, Torres-Larios A, Rodríguez-Hernández A, Osornio-Hernández AI, Terán-Olvera G, Ortega E, Rodríguez-Romero A. Novel murine mAbs define specific and cross-reactive epitopes on the latex profilin panallergen Hev b 8. Mol Immunol 2020; 128:10-21. [PMID: 33045539 DOI: 10.1016/j.molimm.2020.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 09/10/2020] [Accepted: 09/25/2020] [Indexed: 01/06/2023]
Abstract
The production of specific antibodies able to recognize allergens from different sources or block interactions between allergens and antibodies mediating allergic reactions is crucial for developing successful tools for diagnostics and therapeutics. Panallergens are highly conserved proteins present in widely different species, implicated in relevant cross-reactions. The panallergen latex profilin (Hev b 8) has been associated with the latex-food-pollen syndrome. We generated five monoclonal IgGs and one IgE from murine hybridomas against recombinant Hev b 8 and evaluated their interaction with this allergen using ELISA and biolayer interferometry (BLI). Affinity purified mAbs exhibited high binding affinities towards rHev b 8, with KD1 values ranging from 10-10 M to 10-11 M. Some of these antibodies also recognized the recombinant profilins from maize and tomato (Zea m 12 and Sola l 1), and the ash tree pollen (Fra e 2). Competition ELISA demonstrated that some mAb pairs could bind simultaneously to rHev b 8. Using BLI, we detected competitive, non-competitive, and partial-competition interactions between pairs of mAbs with rHev b 8, suggesting the existence of at least two non-overlapping epitopes on the surface of this allergen. Three-dimensional models of the Fv of 1B4 and 2D10 IgGs and docking simulations of these Fvs with rHev b 8 revealed these epitopes. Furthermore, these two mAbs inhibited the interaction of polyclonal IgE and IgG4 antibodies from profilin-allergic patients with rHev b 8, indicating that the mAbs and the antibodies present in sera from allergic patients bind to overlapping epitopes on the allergen. These mAbs can be useful tools for immune-localization studies, immunoassay development, or standardization of allergenic products.
Collapse
Affiliation(s)
- Israel Mares-Mejía
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Benjamín García-Ramírez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Alfredo Torres-Larios
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Annia Rodríguez-Hernández
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Ana Isabel Osornio-Hernández
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Gabriela Terán-Olvera
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico
| | - Enrique Ortega
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico.
| | - Adela Rodríguez-Romero
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Cd. Universitaria, Coyoacán, Ciudad de México, 04510, Mexico.
| |
Collapse
|
4
|
Cudowska B, Kapingidza AB, Pawłowicz M, Pampuch A, Hyduke N, Pote S, Schlachter CR, Lebensztejn DM, Chruszcz M, Kowal K. Production and Use of Recombinant Profilins Amb a 8, Art v 4, Bet v 2, and Phl p 12 for Allergenic Sensitization Studies. Molecules 2020; 25:molecules25020369. [PMID: 31963206 PMCID: PMC7024262 DOI: 10.3390/molecules25020369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 01/05/2023] Open
Abstract
Four recombinant (r) allergens (rAmb a 8.0101, rArt v 4.0101, rBet v 2.0101, and rPhl p 12.0101) were successfully produced and used for sensitization studies. The allergens belong to the profilin family which is one of the most numerous allergen families. These four proteins represent allergens originating from pollen of weeds (rAmb a 8.0101 and rArt v 4.0101), tree (rBet v 2.0101) and grass (rPhl p 12.0101). The recombinant allergens were characterized using various biochemical and biophysical methods and tested for their ability to bind patient-derived antibodies. One hundred patients aged 2 to 50 years sensitized to pollen and plant-derived food allergens (IgE > 0.35 kU/L) were included. Sensitization to individual allergen sources and components of birch and timothy pollens was evaluated using multiparameter immunoblots. The presence of IgE to pollen-derived recombinant profilins rAmb a 8.0101, rArt v 4.0101, rBet v 2.0101, and rPhl p 12.0101 in serum was evaluated using ELISA method. The presence of IgE against pollen profilins was detected in 20 out of 100 studied patients. High correlation was seen between IgE ELISA results with individual pollen profilins. In summary, it was shown that the recombinant versions of the four allergenic profilins can be used for sensitization studies and for component-resolved allergy diagnostics.
Collapse
Affiliation(s)
- Beata Cudowska
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, 15-276 Bialystok, Poland; (B.C.); (M.P.); (D.M.L.)
| | - A. Brenda Kapingidza
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA; (A.B.K.); (N.H.); (S.P.); (C.R.S.)
| | - Magdalena Pawłowicz
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, 15-276 Bialystok, Poland; (B.C.); (M.P.); (D.M.L.)
| | - Agnieszka Pampuch
- Department of Allergology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland;
| | - Noah Hyduke
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA; (A.B.K.); (N.H.); (S.P.); (C.R.S.)
| | - Swanandi Pote
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA; (A.B.K.); (N.H.); (S.P.); (C.R.S.)
| | - Caleb R. Schlachter
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA; (A.B.K.); (N.H.); (S.P.); (C.R.S.)
| | - Dariusz M. Lebensztejn
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, 15-276 Bialystok, Poland; (B.C.); (M.P.); (D.M.L.)
| | - Maksymilian Chruszcz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA; (A.B.K.); (N.H.); (S.P.); (C.R.S.)
- Correspondence: (M.C.); (K.K.); Tel.: +1-803-777-7399 (M.C.); +48-85-6865153 (K.K.)
| | - Krzysztof Kowal
- Department of Allergology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland;
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, 15-276 Bialystok, Poland
- Correspondence: (M.C.); (K.K.); Tel.: +1-803-777-7399 (M.C.); +48-85-6865153 (K.K.)
| |
Collapse
|
5
|
Iliopoulou A, Petrodimopoulou M, Konstantakopoulou M, Pasioti M, Papadopoulou A, Mikos N, Kompoti E, Korakianitis I, Kontogianni M, Pitsios C. Profilin sensitization and its clinical relevance to a population of atopic adults in Greece. REVUE FRANCAISE D ALLERGOLOGIE 2018. [DOI: 10.1016/j.reval.2017.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
6
|
Saha B, Bhattacharya SG. Charting novel allergens from date palm pollen (Phoenix sylvestris) using homology driven proteomics. J Proteomics 2017; 165:1-10. [PMID: 28535932 DOI: 10.1016/j.jprot.2017.05.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 05/05/2017] [Accepted: 05/17/2017] [Indexed: 11/19/2022]
Abstract
Pollen grains from Phoenix sylvestris (date palm), a commonly cultivated tree in India has been found to cause severe allergic diseases in an increasing percentage of hypersensitive individuals. To unearth its allergenic components, pollen protein were profiled by two-dimensional gel electrophoresis followed by immunoblotting with date palm pollen sensitive patient sera. Allergens were identified by MALDI-TOF/TOF employing a layered proteomic approach combining conventional database dependent search and manual de novo sequencing followed by homology-based search as Phoenix sylvestris is unsequenced. Derivatization of tryptic peptides by acetylation has been demonstrated to differentiate the 'b' from the 'y' ions facilitating efficient de novo sequencing. Ten allergenic proteins were identified, out of which six showed homology with known allergens while others were reported for the first time. Amongst these, isoflavone reductase, beta-conglycinin, S-adenosyl methionine synthase, 1, 4 glucan synthase and beta-galactosidase were commonly reported as allergens from coconut pollen and presumably responsible for cross-reactivity. One of the allergens had IgE binding epitope recognized by its glycan moiety. The allergenic potency of date palm pollen has been demonstrated using in vitro tests. The identified allergens can be used to develop vaccines for immunotherapy against date palm pollen allergy. THE SIGNIFICANCE OF THE STUDY Identification of allergenic proteins from sources harboring them is essential in developing therapeutic interventions. This is the first comprehensive study on the identification of allergens from Phoenix sylvestris (date palm) pollen, one of the major aeroallergens in India using a proteomic approach. Proteomic methods are being increasingly used to identify allergens. However, since many of these proteins arise from species which are un-sequenced, it becomes difficult to interpret those using conventional proteomics. Date palm being an unsequenced species, the IgE-reactive proteins have been identified using a stratified proteomic workflow incorporating manual de novo sequencing and homology-based proteomics. This study also gives an insight into the presence of glycan nature of the IgE binding epitopes. Five proteins have been found to be common with coconut pollen allergens and presumably responsible for cross-reactivity. These can be used in diagnostics to differentiate patient cohorts allergic to both coconut and date palm pollen from true date palm pollen allergic subjects. This would also determine better specific immunotherapy regimes between the two cohorts. The allergens identified herein have potential towards vaccine development in date palm pollen allergy as well as in enriching the existing catalogue of allergenic proteins.
Collapse
Affiliation(s)
- Bodhisattwa Saha
- Division of Plant Biology, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Swati Gupta Bhattacharya
- Division of Plant Biology, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India.
| |
Collapse
|
7
|
Purification and immunochemical characterization of Pla l 2, the profilin from Plantago lanceolata. Mol Immunol 2017; 83:100-106. [DOI: 10.1016/j.molimm.2017.01.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/18/2017] [Accepted: 01/19/2017] [Indexed: 11/22/2022]
|
8
|
McKenna OE, Asam C, Araujo GR, Roulias A, Goulart LR, Ferreira F. How relevant is panallergen sensitization in the development of allergies? Pediatr Allergy Immunol 2016; 27:560-8. [PMID: 27129102 PMCID: PMC5006871 DOI: 10.1111/pai.12589] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/27/2016] [Indexed: 12/21/2022]
Abstract
Panallergens comprise various protein families of plant as well as animal origin and are responsible for wide IgE cross-reactivity between related and unrelated allergenic sources. Such cross-reactivities include reactions between various pollen sources, pollen and plant-derived foods as well as invertebrate-derived inhalants and foodstuff. Here, we provide an overview on the most clinically relevant panallergens from plants (profilins, polcalcins, non-specific lipid transfer proteins, pathogenesis-related protein family 10 members) and on the prominent animal-derived panallergen family, tropomyosins. In addition, we explore the role of panallergens in the sensitization process and progress of the allergic disease. Emphasis is given on epidemiological aspects of panallergen sensitization and clinical manifestations. Finally, the issues related to diagnosis and therapy of patients sensitized to panallergens are outlined, and the use of panallergens as predictors for cross-reactive allergy and as biomarkers for disease severity is discussed.
Collapse
Affiliation(s)
- Olivia E McKenna
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Claudia Asam
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Galber R Araujo
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria.,Laboratory of Nanobiotechnology, Institute of Genetics and Biochemistry, Federal University of Uberlandia, Uberlandia, Brazil
| | - Anargyros Roulias
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Luiz R Goulart
- Laboratory of Nanobiotechnology, Institute of Genetics and Biochemistry, Federal University of Uberlandia, Uberlandia, Brazil.,Department of Medical Microbiology and Immunology, University of California, Davis, CA, USA
| | - Fatima Ferreira
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| |
Collapse
|
9
|
Major allergen from Amaranthus palmeri pollen is a profilin: Isolation, partial characterisation and IgE recognition. Allergol Immunopathol (Madr) 2016; 44:160-6. [PMID: 26316420 DOI: 10.1016/j.aller.2015.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/01/2015] [Accepted: 05/07/2015] [Indexed: 01/24/2023]
Abstract
BACKGROUND Pollens represent a rich source of proteins that are also potential elicitors of IgE-mediated pollen allergy. Sensitisation to panallergens could play an important role in diagnosis and specific immunotherapy, because these molecules are present in different plant pollens and plant foods and have marked structural similarity in different species. Profilins are one of the most common panallergens to be studied because they are responsible for a large number of sensitisations and are clearly related to cross-reactivity and co-sensitisation. This study aimed to isolate and characterise a new allergen of Amaranthus palmeri pollen and to determine its allergenicity. METHODS A. palmeri pollen profilin was purified using poly-l-proline-Sepharose affinity chromatography followed by anion exchanger chromatography. Identification of purified protein was carried out by mass spectrometry. Specific IgE was estimated in sera of patients with positive skin prick test to A. palmeri pollen extract, by enzyme-linked immunosorbent assay (ELISA). PRINCIPAL FINDINGS Purified protein appeared as a single band at 14 kDa in SDS-PAGE gel. Mass spectrometric analysis of the gel band identified two highly conserved peptides corresponding to allergenic profilins from pollen of other plants. Sera from about 60% of allergic patients have IgE that recognises the purified A. palmeri protein. CONCLUSION A 14 kDa protein of A. palmeri pollen was purified and identified as allergenic profilin, which was recognised by sera from pollen allergic patients.
Collapse
|
10
|
Asero R, Tripodi S, Dondi A, Di Rienzo Businco A, Sfika I, Bianchi A, Candelotti P, Caffarelli C, Povesi Dascola C, Ricci G, Calamelli E, Maiello N, Miraglia Del Giudice M, Frediani T, Frediani S, Macrì F, Moretti M, Dello Iacono I, Patria MF, Varin E, Peroni D, Comberiati P, Chini L, Moschese V, Lucarelli S, Bernardini R, Pingitore G, Pelosi U, Tosca M, Cirisano A, Faggian D, Plebani M, Verga C, Matricardi PM. Prevalence and Clinical Relevance of IgE Sensitization to Profilin in Childhood: A Multicenter Study. Int Arch Allergy Immunol 2015; 168:25-31. [PMID: 26528861 DOI: 10.1159/000441222] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 09/16/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Little is known about the prevalence and clinical relevance of hypersensitivity to the plant panallergen profilin in children. OBJECTIVES The present study aimed to investigate prevalence, risk factors and clinical relevance of profilin sensitization in a large cohort of Italian children of different ages living in different geographic areas. METHODS Children with pollen allergy enrolled by 16 pediatric outpatient clinics sited in three main geographic areas of Italy were studied. SPT were carried out with commercial pollen extracts and a commercial purified date palm pollen profilin. IgE specific for allergenic pollen molecules, Phl p 12 (grass profilin) and Pru p 3 (peach lipid transfer protein) were tested by ImmunoCAP FEIA. RESULTS IgE to Phl p 12 (≥0.35 kU/l) was observed in 296 of the 1,271 participants (23%), including 17 of the 108 (16%) preschool children. Profilin SPT was positive (≥3 mm) in 320/1,271 (25%) participants. The two diagnostic methods were concordant in 1,151 (91%, p < 0.0001) cases. Phl p 12 IgE prevalence declined from northern to southern Italy and was directly associated with IgE to Phl p 1 and/or Phl p 5 and Ole e 1. Among children with IgE to Phl p 12, OAS was provoked by kiwi, melon, watermelon, banana, apricot and cucumber. CONCLUSIONS Profilin sensitization is very frequent among pollen-allergic children, occurs at a very young age and contributes to the development of childhood OAS with a typical pattern of offending foods. Pediatricians should always consider IgE sensitization to profilin while examining pollen-allergic children, even if they are at preschool age.
Collapse
Affiliation(s)
- Riccardo Asero
- Allergology Service, San Carlo Clinic, Paderno Dugnano, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Asam C, Hofer H, Wolf M, Aglas L, Wallner M. Tree pollen allergens-an update from a molecular perspective. Allergy 2015; 70:1201-11. [PMID: 26186076 PMCID: PMC5102629 DOI: 10.1111/all.12696] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2015] [Indexed: 12/30/2022]
Abstract
It is estimated that pollen allergies affect approximately 40% of allergic individuals. In general, tree pollen allergies are mainly elicited by allergenic trees belonging to the orders Fagales, Lamiales, Proteales, and Pinales. Over 25 years ago, the gene encoding the major birch pollen allergen Bet v 1 was the first such gene to be cloned and its product characterized. Since that time, 53 tree pollen allergens have been identified and acknowledged by the WHO/IUIS allergen nomenclature subcommittee. Molecule‐based profiling of allergic sensitization has helped to elucidate the immunological connections of allergen cross‐reactivity, whereas advances in biochemistry have revealed structural and functional aspects of allergenic proteins. In this review, we provide a comprehensive overview of the present knowledge of the molecular aspects of tree pollen allergens. We analyze the geographic distribution of allergenic trees, discuss factors pivotal for allergic sensitization, and describe the role of tree pollen panallergens. Novel allergenic tree species as well as tree pollen allergens are continually being identified, making research in this field highly competitive and instrumental for clinical applications.
Collapse
Affiliation(s)
- C. Asam
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - H. Hofer
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - M. Wolf
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - L. Aglas
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - M. Wallner
- Department of Molecular Biology University of Salzburg Salzburg Austria
| |
Collapse
|
12
|
Vieira T, Cunha L, Neves E, Falcão H. Diagnostic usefulness of component-resolved diagnosis by skin prick tests and specific IgE to single allergen components in children with allergy to fruits and vegetables. Allergol Immunopathol (Madr) 2014; 42:127-35. [PMID: 23266139 DOI: 10.1016/j.aller.2012.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 09/27/2012] [Accepted: 09/28/2012] [Indexed: 10/27/2022]
Abstract
INTRODUCTION The accurate identification of sensitizing proteins in patients allergic to plant-derived foods is extremely important, allowing a correct dietary advice. We aimed to evaluate the diagnostic usefulness of skin prick tests (SPT) and specific IgE (sIgE) with single molecular allergen components in children with allergy to fruits and vegetables. METHODS Twenty children underwent SPT with a palm profilin (Pho d 2, 50 μg/mL); a Mal d 1-enriched apple extract (2 μg/mL) (PR-10 allergen); and a peach Lipid Transfer Protein (LTP) (Pru p 3, 30 μg/mL). Detection of sIgE to rBet v 1, rBet v 2, Phl p 12 and Pru p 3 was also measured. RESULTS Allergy to multiple fruits and vegetables was observed in 11 (55%) children. Sensitization by SPT to Pho d 2, Mal d 1, and Pru p 3 occurred in 5, 7, and 8 cases, respectively. LTP sensitization appeared to be associated with peach allergy but not with severe reactions, and profilins sensitization to melon and tomato allergy. Kiwi sensitization (12 cases), the plant-derived food that caused more allergic reactions, seemed mostly species-specific. The concordance of SPT extracts and sIgE to the corresponding pan-allergens was high for profilins (k=0.857) and LTP (k=0.706), while for PR-10 allergens it was absent (k=0.079). CONCLUSIONS Pan-allergen sensitization in children with allergy to fruits and vegetables was common and often multiple. There was no association of severe reactions to LTP sensitization. The introduction of routine SPT to pan-allergens can be a simple and feasible way of improving diagnostic and therapeutic efficacy.
Collapse
|
13
|
Núñez R, Carballada F, Lombardero M, Jimeno L, Boquete M. Profilin as an Aeroallergen by Means of Conjunctival Allergen Challenge with Purified Date Palm Profilin. Int Arch Allergy Immunol 2012; 158:115-9. [DOI: 10.1159/000330822] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Accepted: 07/11/2011] [Indexed: 11/19/2022] Open
|
14
|
Tehrani M, Sankian M, Assarehzadegan MA, Falak R, Noorbakhsh R, Moghadam M, Jabbari F, Varasteh A. Identification of a new allergen from Amaranthus retroflexus pollen, Ama r 2. Allergol Int 2011; 60:309-16. [PMID: 21430432 DOI: 10.2332/allergolint.10-oa-0279] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Accepted: 11/17/2010] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Pollinosis from Amaranthus retroflexus pollen is a common cause of respiratory allergy in Iran with a high positive rate (68.8%) among Iranian allergic patients. The aim of the present study was to evaluate the allergenicity of the A. retroflexus pollen profilin. METHODS Using sera from twelve patients allergic to A. retroflexus pollen, IgE-binding proteins from the A. retroflexus pollen extract was identified by immunoblotting. The cDNA of A. retroflexus pollen profilin was amplified, then cloned into the pET-21b (+) vector, expressed in Escherichia coli, and finally purified by metal affinity chromatography. The IgE-binding capacity of the recombinant protein was then analyzed by the ELISA, immunoblotting, and inhibition assays, as well as by the skin prick test (SPT). RESULTS Immunoblotting results indicated a 14.6kDa protein with IgE-reactivity to 33% (4/12) among A. retroflexus pollen-allergic patients. Nucleotide sequencing of the cDNA revealed an open reading frame of 399 bp encoding for 133 amino acid residues which was belonged to the profilin family and designated as Ama r 2. A recombinant Ama r 2 (rAma r 2) was then produced in E. coli as a soluble protein which showed a strong IgE-reactivity via ELISA confirmed by the SPT. Inhibition experiments revealed high IgE cross-reactivities with the profilins from other plants. CONCLUSIONS The profilin from the A. retroflexus pollen, Ama r 2, was firstly identified as an allergen. Moreover, rAma r 2 was produced in E. coli as a soluble immunoreactive protein with an IgE-reactivity similar to that of its natural counterpart.
Collapse
Affiliation(s)
- Mohsen Tehrani
- Immunology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Iran
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Huertas A, López-Sáez M, Carnés J. Clinical profile of a Mediterranean population sensitised to date palm pollen (Phoenix dactylifera). A retrospective study. Allergol Immunopathol (Madr) 2011; 39:145-9. [PMID: 21354689 DOI: 10.1016/j.aller.2010.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 05/26/2010] [Accepted: 06/02/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Date palm pollen allergy is frequently associated with polysensitisation. Observational studies have suggested that date-palm-sensitised individuals could be included in a distinct group of polysensitised patients. The objectives of the study were to analyse the clinical characteristics of a group of patients diagnosed of date-palm pollen allergy and to compare them with pollen allergic patients without date-palm sensitisation. METHODS Forty-eight palm-pollen sensitised individuals were classified as Group A. A control group of 48 patients sensitised to pollens but without palm-pollen allergy were included as Group B. All individuals were skin prick tested with a common battery of aeroallergens. Information about age, sex, family history of atopy, respiratory symptoms, food allergy and sensitisation to other pollens were considered variables of the study. Specific IgE and the allergogram to date-palm pollen were determined in a subgroup of Group A. RESULTS Significant differences in the family history of atopy and number of sensitisations were observed. Both parameters were significantly higher in Group A. Group A showed high prevalence of asthma and higher level of sensitisation to foods (p < 0.05). Significant differences were obtained for sensitisation to epithelia and pollens. Pho d 2 was the most commonly recognised allergen (83.3%) in the palm-pollen allergic group. CONCLUSIONS Date-palm pollen allergic patients constitute a homogeneous group characterised for showing bronchial asthma, sensitisation to food allergens and polysensitisation. These results suggest that the reasons for sensitisation to date-palm pollen remain to be elucidated, but could relate to the existence of as yet non-identified pan-allergens.
Collapse
|
16
|
Ruiz-García M, García Del Potro M, Fernández-Nieto M, Barber D, Jimeno-Nogales L, Sastre J. Profilin: a relevant aeroallergen? J Allergy Clin Immunol 2011; 128:416-8. [PMID: 21458043 DOI: 10.1016/j.jaci.2011.03.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Revised: 02/14/2011] [Accepted: 03/04/2011] [Indexed: 10/18/2022]
|
17
|
|
18
|
Santos A, Van Ree R. Profilins: mimickers of allergy or relevant allergens? Int Arch Allergy Immunol 2011; 155:191-204. [PMID: 21293140 DOI: 10.1159/000321178] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Profilins are ubiquitous proteins, present in all eukaryotic cells and identified as allergens in pollen, latex and plant foods. The highly conserved structure justifies the cross-reactive nature of IgE antibodies against plant profilins and their designation as pan-allergens. Primary sensitization to profilin seems to arise from pollen sensitization with later development of cross-reactive IgE antibodies against plant food (and possibly latex) profilins. The role of profilin in inducing allergic symptoms needs to be evaluated and raises important issues in allergy diagnosis due to cross-reactivity. IgE cross-reactivity among profilins is associated with multiple pollen sensitization and with various pollen-food syndromes. In respiratory allergy, sensitization to pollen to which the patient has virtually no environmental exposure has been identified as a manifestation of profilin sensitization. As a food allergen, profilin usually elicits mild reactions, such as oral allergy syndrome, is not modified by processing and is especially important in allergy to some fruits, such as melon, watermelon, banana, tomato, citrus fruit and persimmon. Purified natural and recombinant profilins for in vitro and in vivo allergy tests are helpful in the diagnostic work-up. Herein we review the current state of knowledge about the allergen profilin and its implications in the diagnosis and treatment of allergic diseases. We conclude that, although its role in triggering allergic symptoms is still controversial, profilin is undoubtedly a relevant allergen. As a pan-allergen, profilin is associated with multiple pollen sensitization and pollen-food-latex syndromes that the allergist has to be aware of in order to accomplish an accurate diagnosis and successful treatment of allergic diseases.
Collapse
Affiliation(s)
- Alexandra Santos
- Departments of Experimental Immunology and Otorhinolaryngology, Amsterdam Medical Center, University of Amsterdam, Amsterdam, The Netherlands. alexandrafigueirasantos @ gmail.com
| | | |
Collapse
|
19
|
Varasteh AR, Moghadam M, Vahedi F, Kermani T, Sankian M. Cloning and expression of the allergen Cro s 2 profilin from saffron (Crocus sativus). Allergol Int 2009; 58:429-35. [PMID: 19628979 DOI: 10.2332/allergolint.09-oa-0088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2009] [Accepted: 03/13/2009] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Profilin is a panallergen that is recognized by IgE in allergic patients. Allergy to saffron (Crocus sativus) pollen has been described in people exposed to its pollen. Saffron contains a profilin that may cause allergic reactions in atopic subjects. The aim of this study was to describe the cloning, expression and purification of saffron profilin from pollen. METHODS Cloning of saffron profilin was performed by polymerase chain reaction using specific primers from saffron pollen RNA. Expression was carried out in Escherichia coli BL21 (DE3) using a vector pET-102- TOPO. A recombinant fusion protein was expressed and the recombinant profilin was purified by metal precipitation. Immunological characterization was performed by immunoblotting experiments. RESULTS The 34kDa- recombinant saffron profilin, Cro s 2, as a fusion protein was purified. Immunoblotting tested with the sera of allergic patients showed a specific reaction with the recombinant Cro s 2 band. CONCLUSIONS The sequence of Cro s 2 showed a high degree of identity and similarity to other plant profilins and the recombinant saffron profilin, Cro s 2, may be used for target-specific diagnosis and structural analyses and investigation of cross reactivity of Cro s 2 with other plant profilins.
Collapse
Affiliation(s)
- Abdol-Reza Varasteh
- Immunobiochemistry Lab, Immunology Research Center, Avicenna Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | | | | | |
Collapse
|
20
|
Bernstein IL, Li JT, Bernstein DI, Hamilton R, Spector SL, Tan R, Sicherer S, Golden DBK, Khan DA, Nicklas RA, Portnoy JM, Blessing-Moore J, Cox L, Lang DM, Oppenheimer J, Randolph CC, Schuller DE, Tilles SA, Wallace DV, Levetin E, Weber R. Allergy diagnostic testing: an updated practice parameter. Ann Allergy Asthma Immunol 2008; 100:S1-148. [PMID: 18431959 DOI: 10.1016/s1081-1206(10)60305-5] [Citation(s) in RCA: 291] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
21
|
Weber RW. Cross-reactivity of pollen allergens: impact on allergen immunotherapy. Ann Allergy Asthma Immunol 2007; 99:203-11; quiz 212-3, 231. [PMID: 17910323 DOI: 10.1016/s1081-1206(10)60654-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To provide guidelines for the rational formulation of allergen immunotherapy extracts based on knowledge of pollen allergen and epitope cross-reactivity. DATA SOURCES A PubMed search was performed for articles published from 1966 to 2007 using the keywords pollen, allergen, and cross-reactivity. Older literature was found through cross-referencing of older articles and older reviews on pollen cross-reactivity. STUDY SELECTION Articles that dealt with crude pollen extracts and characterized allergens that addressed cross-reactivity were selected for inclusion in this review. RESULTS In addition to unique allergens, several families of botanic proteins have similarities that allow them to act as pan-allergens. Although frequently these are minor allergens, in some circumstances they may also be major allergens. Recent studies have investigated nonspecific lipid transfer proteins, calcium-binding proteins, pathogenesis-related protein families, and profilins. Calcium-binding proteins and nonspecific lipid transfer proteins are responsible for pollen-fruit interactions and pollen cross-reactivity. Clarification of pollen allergen enzymatic activity helps explain the ubiquitous nature of these proteins. CONCLUSION Characterization of specific pollen allergens and their protein families has provided insight into cross-reactivity. Clarification of these relationships allows for consolidation or substitution in formulation of inhalant extracts.
Collapse
Affiliation(s)
- Richard W Weber
- National Jewish Medical & Research Center, University of Colorado Health Sciences Center, Denver, Colorado, USA.
| |
Collapse
|
22
|
Mistrello G, Harfi H, Roncarolo D, Kwaasi A, Zanoni D, Falagiani P, Panzani R. Date Palm Pollen Allergoid: Characterization of Its Chemical-Physical and Immunological Properties. Int Arch Allergy Immunol 2007; 145:224-30. [PMID: 17914274 DOI: 10.1159/000109291] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Accepted: 06/18/2007] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Date palm (DP) pollen can cause allergic symptoms in people living in different countries. Specific immunotherapy with allergenic extracts by subcutaneous route is effective to cure allergic people. However, the risk of side effects has led to explore safer therapeutic modalities. The aim of our work was to evaluate IgE cross-reactivity between DP and autochthonous palm (European fan palm, EFP) pollen extracts, to chemically modify DP extract with potassium cyanate in order to obtain an allergoid, and to characterize it. METHODS By radioallergosorbent test inhibition, immunoblotting (IB) and skin prick test, in vitro and in vivo allergenic activities of native and modified DP extracts were compared. By SDS-PAGE and IB, we compared the protein profile and IgE-binding capacity of both native and modified DP, as well as of EFP extracts. By IB inhibition, IgE cross-reactivity of native DP and EFP extracts was evaluated. By ELISA, the capacity of modified DP-induced IgG to react with native DP extract was determined. RESULTS Radioallergosorbent test inhibition, IB and skin prick test results demonstrated that modified DP was significantly less allergenic than native DP extract. The SDS-PAGE profile showed that potassium cyanate treatment of DP extract did not alter the molecular weight of its components. In addition, no difference was observed between native DP and EFP extracts. Subsequent IB inhibition data evidenced the existence of a strong IgE cross-reactivity between native DP and EFP extracts. ELISA results indicated that the administration of modified DP in mice was able to induce specific IgG also recognizing native DP extract. CONCLUSIONS Modified DP extract (allergoid) seems to be a good candidate for immunotherapy of patients affected by specific allergy.
Collapse
|
23
|
Song JJ, Zhang HY, Liu ZG, Ran PX. Cloning of the panallergen profilin from lychee fruit and its cross-reactivity with birch pollen profilin Bet v 2. FOOD AGR IMMUNOL 2007. [DOI: 10.1080/09540100701616290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
24
|
Song J, Zhang H, Liu Z, Ran P. Mango profilin: cloning, expression and cross-reactivity with birch pollen profilin Bet v 2. Mol Biol Rep 2007; 35:231-7. [PMID: 17417721 DOI: 10.1007/s11033-007-9075-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Accepted: 02/26/2007] [Indexed: 11/30/2022]
Abstract
Mango can cause severe anaphylactic reactions. Profilin has been assumed partly responsible for the cross-reactivity between mango fruit and other allergens but has not been finally clarified. In this study, two isoforms of mango fruits profilin were amplified by RT-PCR and 3'RACE from total RNA. Each mango profilin cDNA includes an open reading frame coding for 131 amino acids. The deduced amino acid sequence of the corresponding protein show high identity with other allergenic profilins. Expression of the recombinant mango profilin was carried out in Escherichia coli BL21(DE3) using vector PET28a and the purification of the recombinant protein was performed via affinity chromatography with Ni+ coupled to sepharose. IgE reactivity of recombinant mango profilin was investigated by immunoblot and 8 of 18 mango-allergic patients tested presented specific IgE-antibodies to recombinant mango profilin. IgE-inhibition and ELISA inhibition experiments were performed to analyze mango profilin cross-reactivity with profilins from birch pollen and high cross-reactivities have been found.
Collapse
Affiliation(s)
- Juanjuan Song
- College of life science, Shenzhen University, Shenzhen, 518060, China
| | | | | | | |
Collapse
|
25
|
Weber RW. Cross-reactivity of pollen allergens: recommendations for immunotherapy vaccines. Curr Opin Allergy Clin Immunol 2006; 5:563-9. [PMID: 16264339 DOI: 10.1097/01.all.0000191240.28255.ab] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW This review will summarize recent research on pollen allergen and epitope cross-reactivity. Knowledge of these relationships aids in the rational formulation of allergen immunotherapy vaccines. RECENT FINDINGS There has been further clarification of panallergens and their roles as both major and minor allergens. Recent studies have targeted non-specific lipid transfer proteins and calcium-binding proteins (polcalcins), as well as pathogenesis-related protein families and profilins. Polcalcins and non-specific lipid transfer proteins are responsible for pollen-fruit interactions as well as pollen cross-reactivity, in some cases, but not all, accounting for major allergenicity. Delineation of the enzymatic activity of certain allergens explains the ubiquitous nature of these pollen proteins. SUMMARY Characterization of specific pollen allergens and their protein families has provided insight into the grounds for cross-reactivity. Continuing clarification of these relationships will allow the substitution and consolidation of inhalant extracts as described in the conclusion.
Collapse
Affiliation(s)
- Richard W Weber
- National Jewish Medical and Research Center, University of Colorado Health Sciences Center, Denver, Colorado, USA.
| |
Collapse
|
26
|
Abstract
Among pollen allergens, grass pollen allergens are some of the most frequent contributors to allergic symptoms. Substantial progress has been made since the 1960s in the identification and characterization of the grass allergens. Members of this group belong to the Poaceae family, and have been classified into 13 distinct groups based on their structure, and their biological and immunologic properties. The major contributors to allergy and, hence, most studied among the grass allergens, are those belonging to groups 1 and 5. This review is focused on the structure and immunobiology of the grass allergens and highlights how recent advances in the field have contributed to superior diagnosis and immunotherapy for allergy to grass pollens.
Collapse
Affiliation(s)
- Shyam S Mohapatra
- Department of Internal Medicine, Division of Allergy and Immunology and the James A. Haley Veterans Hospital, University of South Florida, College of Medicine, 12901 Bruce B. Downs Boulevard, Tampa, FL 33612, USA.
| | | | | |
Collapse
|