Mapping Human Monoclonal IgE Epitopes on the Major Dust Mite Allergen Der p 2.
Mapping Human Monoclonal IgE Epitopes on the Major Dust Mite Allergen Der p 2.
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DOI:
10.4049/jimmunol.2000295
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发表时间:
2020-10-15
期刊:
影响因子:
--
通讯作者:
Pomés A
中科院分区:
文献类型:
--
作者:
Mueller GA;Glesner J;Daniel JL;Zhang J;Hyduke N;Richardson CM;DeRose EF;Chapman MD;Peebles RS Jr;A Smith S;Pomés A
IgE antibodies drive the symptoms of allergic disease upon crosslinking allergens on mast cells or basophils. If the IgE binding sites on the allergens could be identified, it may be useful for creating new forms of immunotherapy. However, direct knowledge of the human IgE epitopes is limited due to the very low frequency of IgE-producing B cells in blood. A new hybridoma technology using human B cells from house dust mite allergic patients was used to identify four Der p 2-specific human IgE monoclonal antibodies (hIgE mAbs). Their relative binding sites were assessed and compared by immunoassays with three previously studied murine IgG (mIgG) mAbs. Immunoassays showed that the recognition of Der p 2 by the first three hIgE was inhibited by a single mIgG, but the fourth hIgE recognized a different epitope from all the other mAbs. The functional ability of the hIgE that bind different epitopes to crosslink Der p 2 was demonstrated in a mouse model of passive systemic anaphylaxis. NMR analyses of Der p 2 in complex with IgG and IgE antibodies were used to identify specific residues in the epitopes. The combination of immunoassays to distinguish overlapping epitopes and NMR analyses to identify specific residues involved in Ab binding provided the first epitope mapping of human IgE monoclonal antibodies to an allergen. The technologies developed here will be useful in high resolution mapping of human epitopes on other antigens, and the design of improved therapeutics.
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影响因子:
2.1
作者:
Ichikawa, Saori;Takai, Toshiro;Hatanaka, Hideki
通讯作者:
Hatanaka, Hideki
影响因子:
4.8
作者:
Ichikawa, S;Hatanaka, H;Inagaki, F
通讯作者:
Inagaki, F
影响因子:
4.8
作者:
Mueller, GA;Smith, AM;Benjamin, DC
通讯作者:
Benjamin, DC
DOI:
10.1111/cea.12680
发表时间:
2016-02
期刊:
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology
影响因子:
--
作者:
Mueller GA;Randall TA;Glesner J;Pedersen LC;Perera L;Edwards LL;DeRose EF;Chapman MD;London RE;Pomés A
通讯作者:
Pomés A
影响因子:
14.2
作者:
Johansson, S. G. O.
通讯作者:
Johansson, S. G. O.