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Monoclonal antibodies to recombinant Der f 2 and development of a two-site ELISA sensitive to major Der f 2 isoallergen in Korea

 K.Y. Jeong  ;  H.S. Jin  ;  S.H. Oh  ;  C.S. Hong  ;  H.I. Ree  ;  I.Y. Lee  ;  T.S. Yong 
 ALLERGY, Vol.57(1) : 29-34, 2002 
Journal Title
Issue Date
Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology* ; Antibody Specificity ; Antigens, Dermatophagoides ; Bedding and Linens ; Dust/analysis ; Enzyme-Linked Immunosorbent Assay ; Glycoproteins/analysis* ; Glycoproteins/chemistry ; Glycoproteins/genetics ; Glycoproteins/immunology* ; Korea ; Mites/immunology ; Molecular Sequence Data ; Protein Isoforms/analysis* ; Recombinant Proteins/chemistry ; Recombinant Proteins/immunology ; Sensitivity and Specificity
Der f 2 ; Dermatophagoides farinae ; ELISA ; house dust mite
Background: Der f 2 is a major sensitizing allergen in patients allergic to house dust mites worldwide. Isoforms of Der f 2 have been reported and are known to have different antigenicities. The aim of this study was to facilitate antigenic analysis and to develop an improved method for the detection of Der f 2 isoallergen, which is prevalent in Korea. Methods: A two-site ELISA was developed with monoclonal antibodies (mAbs) which were produced against recombinant Der f 2 (rDer f 2) and applied to assess Der f 2 in bedding samples. Results: A major isoform of Der f 2, found in Korea, was found to have amino acid variations especially at position 100 from lysine to glutamic acid, which is known to reduce significantly the binding affinity of mAbs when used to assess group 2 allergens. The detection limit of the developed two-site ELISA was determined to be about 8 ng/ml with rDer f 2 and 1 µg/ml with Dermatophagoides farinae crude extract. The average amount of Der f 2 in dust obtained from bedding samples from 89 homes in Seoul was estimated to be 25.61 ± 10.70 µg/g dust. Conclusions:  Assays using mAbs for rDer f 2 could be useful for the assessment of environmental allergen exposure and mAbs could be used to further characterize the isoallergens of Der f 2.
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1. College of Medicine (의과대학) > Dept. of Environmental Medical Biology (환경의생물학교실) > 1. Journal Papers
Yonsei Authors
Yong, Tai Soon(용태순) ORCID logo https://orcid.org/0000-0002-3445-0769
Jeong, Kyoung Yong(정경용) ORCID logo https://orcid.org/0000-0001-9887-1426
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