Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis
Background: Shellfish allergy is one of the major causes of life-threatening allergic reactions to food. The shrimp species Pandalus borealis is the commercially most important coldwater shrimp species, and its protein extract is commonly used in shrimp allergy diagnostics. However, the DNA sequence...
Published in: | International Archives of Allergy and Immunology |
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crskarger:10.1159/000339740 2024-06-09T07:48:35+00:00 Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis Myrset, Heidi R. Barletta, Bianca Di Felice, Gabriella Egaas, Eliann Dooper, Maaike M.B.W. 2012 http://dx.doi.org/10.1159/000339740 https://www.karger.com/Article/Pdf/339740 en eng S. Karger AG https://www.karger.com/Services/SiteLicenses https://www.karger.com/Services/SiteLicenses International Archives of Allergy and Immunology volume 160, issue 3, page 221-232 ISSN 1018-2438 1423-0097 journal-article 2012 crskarger https://doi.org/10.1159/000339740 2024-05-15T13:31:30Z Background: Shellfish allergy is one of the major causes of life-threatening allergic reactions to food. The shrimp species Pandalus borealis is the commercially most important coldwater shrimp species, and its protein extract is commonly used in shrimp allergy diagnostics. However, the DNA sequence of its major allergen, tropomyosin, designated Pan b 1, was not previously described. Our aim was to identify the cDNA sequence of Pan b 1 and to generate a recombinant protein with similar structure and allergenicity as the natural protein. Methods: P. borealis shrimps were caught in the Oslofjord (Norway). cDNA from Pan b 1 was generated, an N-terminal histidine tag was added, and the protein was expressed in Escherichia coli. The recombinant Pan b 1 was characterized by structural and IgE-binding studies and investigated further with basophil activation tests (BATs) and skin prick tests (SPTs) on Norwegian shrimp-allergic individuals. Results: The open reading frame encoded 284 amino acids that shared 97–100% identity with other shrimp tropomyosins. Mass spectroscopy of natural Pan b 1 confirmed the protein’s molecular mass and indicated the absence of posttranslational modifications. Circular dichroism spectroscopy revealed virtually identical spectra between recombinant and natural Pan b 1, which together with native PAGE and size exclusion chromatography results indicated a similar structure. Furthermore, immunoblot and ELISA studies as well as BATs and SPTs showed equivalent results of recombinant and natural Pan b 1. Conclusion: A recombinant tropomyosin from P. borealis was generated that can be used in diagnostics and further studies on tropomyosin allergenicity and specific immunotherapy. Article in Journal/Newspaper northern shrimp Pandalus borealis Karger Norway International Archives of Allergy and Immunology 160 3 221 232 |
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English |
description |
Background: Shellfish allergy is one of the major causes of life-threatening allergic reactions to food. The shrimp species Pandalus borealis is the commercially most important coldwater shrimp species, and its protein extract is commonly used in shrimp allergy diagnostics. However, the DNA sequence of its major allergen, tropomyosin, designated Pan b 1, was not previously described. Our aim was to identify the cDNA sequence of Pan b 1 and to generate a recombinant protein with similar structure and allergenicity as the natural protein. Methods: P. borealis shrimps were caught in the Oslofjord (Norway). cDNA from Pan b 1 was generated, an N-terminal histidine tag was added, and the protein was expressed in Escherichia coli. The recombinant Pan b 1 was characterized by structural and IgE-binding studies and investigated further with basophil activation tests (BATs) and skin prick tests (SPTs) on Norwegian shrimp-allergic individuals. Results: The open reading frame encoded 284 amino acids that shared 97–100% identity with other shrimp tropomyosins. Mass spectroscopy of natural Pan b 1 confirmed the protein’s molecular mass and indicated the absence of posttranslational modifications. Circular dichroism spectroscopy revealed virtually identical spectra between recombinant and natural Pan b 1, which together with native PAGE and size exclusion chromatography results indicated a similar structure. Furthermore, immunoblot and ELISA studies as well as BATs and SPTs showed equivalent results of recombinant and natural Pan b 1. Conclusion: A recombinant tropomyosin from P. borealis was generated that can be used in diagnostics and further studies on tropomyosin allergenicity and specific immunotherapy. |
format |
Article in Journal/Newspaper |
author |
Myrset, Heidi R. Barletta, Bianca Di Felice, Gabriella Egaas, Eliann Dooper, Maaike M.B.W. |
spellingShingle |
Myrset, Heidi R. Barletta, Bianca Di Felice, Gabriella Egaas, Eliann Dooper, Maaike M.B.W. Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
author_facet |
Myrset, Heidi R. Barletta, Bianca Di Felice, Gabriella Egaas, Eliann Dooper, Maaike M.B.W. |
author_sort |
Myrset, Heidi R. |
title |
Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
title_short |
Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
title_full |
Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
title_fullStr |
Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
title_full_unstemmed |
Structural and Immunological Characterization of Recombinant Pan b 1, a Major Allergen of Northern Shrimp, Pandalus borealis |
title_sort |
structural and immunological characterization of recombinant pan b 1, a major allergen of northern shrimp, pandalus borealis |
publisher |
S. Karger AG |
publishDate |
2012 |
url |
http://dx.doi.org/10.1159/000339740 https://www.karger.com/Article/Pdf/339740 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
northern shrimp Pandalus borealis |
genre_facet |
northern shrimp Pandalus borealis |
op_source |
International Archives of Allergy and Immunology volume 160, issue 3, page 221-232 ISSN 1018-2438 1423-0097 |
op_rights |
https://www.karger.com/Services/SiteLicenses https://www.karger.com/Services/SiteLicenses |
op_doi |
https://doi.org/10.1159/000339740 |
container_title |
International Archives of Allergy and Immunology |
container_volume |
160 |
container_issue |
3 |
container_start_page |
221 |
op_container_end_page |
232 |
_version_ |
1801380349768368128 |