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Takei M, Nin C, Iizuka T, Pawlikowski M, Selva MA, Chantran Y, Nakajima Y, Zheng J, Aizawa T, Ebisawa M, Sénéchal H, Poncet P. Capsicum Allergy: Involvement of Cap a 7, a New Clinically Relevant Gibberellin-Regulated Protein Cross-Reactive With Cry j 7, the Gibberellin-Regulated Protein From Japanese Cedar Pollen. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2022; 14:328-338. [PMID: 35557497 PMCID: PMC9110916 DOI: 10.4168/aair.2022.14.3.328] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/01/2022] [Accepted: 02/21/2022] [Indexed: 11/20/2022]
Abstract
The Capsicum genus belongs to the Solanaceae family. Bell or chili peppers are consumed worldwide, but allergy to Capsicum is rare. It is involved in the celery-birch-mugwort-spice syndrome and cross-reactivities were reported with latex. Several allergens have been described, but only 2 are referenced in the World Health Organization/International Union of Immunological Societies allergen data bank, a thaumatin-like protein and a profilin. A patient allergic to bell/chili pepper, peach, orange and Japanese cedar pollen was clinically and biologically analyzed including direct and competitive immunoblots and basophil activation tests (BATs) with allergenic source extracts and recombinant gibberellin-regulated proteins (GRPs). The patient was shown to be sensitized to Cap a 7, the GRP of Capsicum annuum newly described herein. Cross-reactivities were demonstrated between various GRPs from bell/chili pepper, peach, orange and Japanese cedar pollen either in native form in the different extracts or as recombinant allergens. A similar immunoglobulin E reactivity was found also in Capsicum chinense and against snakin-1, the GRP from potato. The patient showed a positive BAT with recombinant Cry j 7, Pru p 7 and Cap a 7, but not with recombinant snakin-1. Despite the ubiquitous nature of GRPs in plants and the immunochemical cross-reactivity observed between different GRPs, clinically relevant sensitization to this protein family seems restricted to some allergenic sources, often associated with Cupressaceae pollen allergy, and to some patients, therefore reflecting very specific and peculiar mechanisms of conditional sensitization.
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Affiliation(s)
- Mari Takei
- Department of Allergy, Clinical Research Center of Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Charles Nin
- Allergy & Environment Research Team, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Tomona Iizuka
- Science Protein Laboratory, Hokkaido University, Sapporo, Japan
| | - Marine Pawlikowski
- Allergy & Environment Research Team, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Marie-Ange Selva
- Immunology Department, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Yannick Chantran
- Immunology Department, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Yurie Nakajima
- Science Protein Laboratory, Hokkaido University, Sapporo, Japan
| | - Jingkang Zheng
- Science Protein Laboratory, Hokkaido University, Sapporo, Japan
| | - Tomoyasu Aizawa
- Science Protein Laboratory, Hokkaido University, Sapporo, Japan
| | - Motohiro Ebisawa
- Department of Allergy, Clinical Research Center of Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Hélène Sénéchal
- Allergy & Environment Research Team, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Pascal Poncet
- Allergy & Environment Research Team, Armand Trousseau Children Hospital, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
- Immunology Department, Institut Pasteur, Paris, France.
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Jin Y, Goodman RE, Tetteh AO, Lu M, Tripathi L. Bioinformatics analysis to assess potential risks of allergenicity and toxicity of HRAP and PFLP proteins in genetically modified bananas resistant to Xanthomonas wilt disease. Food Chem Toxicol 2017; 109:81-89. [PMID: 28830835 DOI: 10.1016/j.fct.2017.08.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 11/17/2022]
Abstract
Banana Xanthomonas wilt (BXW) disease threatens banana production and food security throughout East Africa. Natural resistance is lacking among common cultivars. Genetically modified (GM) bananas resistant to BXW disease were developed by inserting the hypersensitive response-assisting protein (Hrap) or/and the plant ferredoxin-like protein (Pflp) gene(s) from sweet pepper (Capsicum annuum). Several of these GM banana events showed 100% resistance to BXW disease under field conditions in Uganda. The current study evaluated the potential allergenicity and toxicity of the expressed proteins HRAP and PFLP based on evaluation of published information on the history of safe use of the natural source of the proteins as well as established bioinformatics sequence comparison methods to known allergens (www.AllergenOnline.org and NCBI Protein) and toxins (NCBI Protein). The results did not identify potential risks of allergy and toxicity to either HRAP or PFLP proteins expressed in the GM bananas that might suggest potential health risks to humans. We recognize that additional tests including stability of these proteins in pepsin assay, nutrient analysis and possibly an acute rodent toxicity assay may be required by national regulatory authorities.
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Affiliation(s)
- Yuan Jin
- University of Nebraska-Lincoln, Food Allergy Research and Resource Program, 1901 North 21st Street, P.O. Box 886207, Lincoln, NE 68588-6207, USA
| | - Richard E Goodman
- University of Nebraska-Lincoln, Food Allergy Research and Resource Program, 1901 North 21st Street, P.O. Box 886207, Lincoln, NE 68588-6207, USA
| | - Afua O Tetteh
- University of Nebraska-Lincoln, Food Allergy Research and Resource Program, 1901 North 21st Street, P.O. Box 886207, Lincoln, NE 68588-6207, USA
| | - Mei Lu
- University of Nebraska-Lincoln, Food Allergy Research and Resource Program, 1901 North 21st Street, P.O. Box 886207, Lincoln, NE 68588-6207, USA
| | - Leena Tripathi
- International Institute of Tropical Agriculture, P.O. Box 30709, Nairobi, Kenya.
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