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Cloning, expression and characterization of mugwort pollen allergen Art v 2, a pathogenesis-related protein from family group 1.
Mol Immunol. 2007 Jul; 44(15):3653-60.MI

Abstract

Mugwort (Artemisia vulgaris) belongs to the Compositae family, and is one of the main causes of allergy in late summer and autumn. The aim of the study was to characterize the allergen Art v 2 from mugwort pollen. Skin prick tests, performed in 19 patients allergic to mugwort and 10 control patients, showed an Art v 2 sensitization prevalence of 58%, whereas none false-positives were detected among control patients. Art v 2 was purified by standard chromatography and binding to Concanavalin A column and had an apparent molecular mass of 33 and 20 kDa, calculated by gel permeation and SDS-PAGE under denaturing conditions, respectively, showing that the allergen is composed of two identical subunits. Art v 2-encoding cDNA was amplified by PCR using degenerate primers based on reported partial amino acid sequences. Cloned cDNA encoding Art v 2 contains 140 bp that codify for a polypeptide of 15.8 kDa, with a predicted pI value of 5.2, and one potential N-glycosylation site. Protein homology search demonstrated that Art v 2 share 55-42% identical residues with pathogenesis-related protein PR-1 of tomato, potato, rape, wheat and rice. Homology was also found to Ves v 5 (41% identical residues). Bacterial-expressed recombinant Art v 2 was recognized only by 21% of mugwort-allergic patients. In conclusion, Art v 2 from mugwort is the first weed pollen allergen that belongs to the pathogenesis-related protein PR-1 and its recombinant form could help molecular diagnosis of mugwort associated allergy.

Authors+Show Affiliations

Research and Development Department, Bial-Arístegui, Alameda Urquijo, 27, 48008 Bilbao, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17521730

Citation

Arilla, M C., et al. "Cloning, Expression and Characterization of Mugwort Pollen Allergen Art V 2, a Pathogenesis-related Protein From Family Group 1." Molecular Immunology, vol. 44, no. 15, 2007, pp. 3653-60.
Arilla MC, Ibarrola I, Puente Y, et al. Cloning, expression and characterization of mugwort pollen allergen Art v 2, a pathogenesis-related protein from family group 1. Mol Immunol. 2007;44(15):3653-60.
Arilla, M. C., Ibarrola, I., Puente, Y., Daza, J. C., Martínez, A., & Asturias, J. A. (2007). Cloning, expression and characterization of mugwort pollen allergen Art v 2, a pathogenesis-related protein from family group 1. Molecular Immunology, 44(15), 3653-60.
Arilla MC, et al. Cloning, Expression and Characterization of Mugwort Pollen Allergen Art V 2, a Pathogenesis-related Protein From Family Group 1. Mol Immunol. 2007;44(15):3653-60. PubMed PMID: 17521730.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cloning, expression and characterization of mugwort pollen allergen Art v 2, a pathogenesis-related protein from family group 1. AU - Arilla,M C, AU - Ibarrola,I, AU - Puente,Y, AU - Daza,J C, AU - Martínez,A, AU - Asturias,J A, Y1 - 2007/05/22/ PY - 2007/02/13/received PY - 2007/04/12/revised PY - 2007/04/13/accepted PY - 2007/5/25/pubmed PY - 2007/7/31/medline PY - 2007/5/25/entrez SP - 3653 EP - 60 JF - Molecular immunology JO - Mol. Immunol. VL - 44 IS - 15 N2 - Mugwort (Artemisia vulgaris) belongs to the Compositae family, and is one of the main causes of allergy in late summer and autumn. The aim of the study was to characterize the allergen Art v 2 from mugwort pollen. Skin prick tests, performed in 19 patients allergic to mugwort and 10 control patients, showed an Art v 2 sensitization prevalence of 58%, whereas none false-positives were detected among control patients. Art v 2 was purified by standard chromatography and binding to Concanavalin A column and had an apparent molecular mass of 33 and 20 kDa, calculated by gel permeation and SDS-PAGE under denaturing conditions, respectively, showing that the allergen is composed of two identical subunits. Art v 2-encoding cDNA was amplified by PCR using degenerate primers based on reported partial amino acid sequences. Cloned cDNA encoding Art v 2 contains 140 bp that codify for a polypeptide of 15.8 kDa, with a predicted pI value of 5.2, and one potential N-glycosylation site. Protein homology search demonstrated that Art v 2 share 55-42% identical residues with pathogenesis-related protein PR-1 of tomato, potato, rape, wheat and rice. Homology was also found to Ves v 5 (41% identical residues). Bacterial-expressed recombinant Art v 2 was recognized only by 21% of mugwort-allergic patients. In conclusion, Art v 2 from mugwort is the first weed pollen allergen that belongs to the pathogenesis-related protein PR-1 and its recombinant form could help molecular diagnosis of mugwort associated allergy. SN - 0161-5890 UR - https://www.unboundmedicine.com/medline/citation/17521730/Cloning_expression_and_characterization_of_mugwort_pollen_allergen_Art_v_2_a_pathogenesis_related_protein_from_family_group_1_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0161-5890(07)00162-9 DB - PRIME DP - Unbound Medicine ER -