T-cell epitopes of Phl p 1, major pollen allergen of timothy grass (Phleum pratense): Evidence for crossreacting and non-crossreacting T-cell epitopes.

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Presentation transcript:

T-cell epitopes of Phl p 1, major pollen allergen of timothy grass (Phleum pratense): Evidence for crossreacting and non-crossreacting T-cell epitopes within grass group I allergens Siegfried Schenka, Heimo Breitenedera, Markus Susanib, Nader Najafiana, Sylvia Laffera, Michael Duchênea, Rudolf Valentaa, Gottfried Fischerc, Otto Scheinera, Dietrich Krafta, Christof Ebnera Journal of Allergy and Clinical Immunology Volume 96, Issue 6, Pages 986-996 (December 1995) DOI: 10.1016/S0091-6749(95)70237-7 Copyright © 1995 Mosby, Inc. Terms and Conditions

FIG. 1 IgE immunoblot experiments. Reactivity of patients' plasma with nitrocellulose-blotted aqueous extract from timothy grass (Phleum pratense) pollen and with purified recombinant Phl p 1 (2*r Phl p 1: Phl p 1-dimer). Numbers 1-9. patients' plasma: R.H., K.H., G.Z., N.O., L.V., E.C., H.E.R., P.S., H.N.; B, buffer control; N, normal human serum pool. Journal of Allergy and Clinical Immunology 1995 96, 986-996DOI: (10.1016/S0091-6749(95)70237-7) Copyright © 1995 Mosby, Inc. Terms and Conditions

FIG. 2 IgE immunoblot experiments. Reactivity of patients' plasma with aqueous extracts from ryegrass (Lolium perenne), Kentucky bluegrass (Poa pratensis), cocksfoot grass (Dactylis glomerata), and rye (Secale cereale). Numbers 1-9, patients' plasma: R.H., K.H., G.Z., N.O., L.V., E.C., H.E.R., P.S., H.N.; B, buffer control; N, normal human serum pool. Journal of Allergy and Clinical Immunology 1995 96, 986-996DOI: (10.1016/S0091-6749(95)70237-7) Copyright © 1995 Mosby, Inc. Terms and Conditions

FIG. 3 Schematic presentation of synthetic peptides overlapping for three amino acids and spanning the complete sequence of Phl p 1. Peptides inducing proliferation in TCL and TCC of nine individuals allergic to Phl p 1 are indicated. Journal of Allergy and Clinical Immunology 1995 96, 986-996DOI: (10.1016/S0091-6749(95)70237-7) Copyright © 1995 Mosby, Inc. Terms and Conditions

FIG. 4 TCR Vβ gene usage and proliferative responses of five selected TCC reactive with Phl p 1 epitope AA 73-84 to peptides synthesized according to corresponding regions on Lol p 1 and Sec c 1. (cpm, Counts per minute after [3H]-thymidine uptake.) Journal of Allergy and Clinical Immunology 1995 96, 986-996DOI: (10.1016/S0091-6749(95)70237-7) Copyright © 1995 Mosby, Inc. Terms and Conditions

FIG. 5 TCR Vβ gene usage and proliferative responses of four selected TCC reactive with Phl p 1 epitope AA 100-111 to peptides synthesized according to corresponding regions on Lol p 1 and Sec c 1. (cpm, Counts per minute after [3H]-thymidine uptake.) Journal of Allergy and Clinical Immunology 1995 96, 986-996DOI: (10.1016/S0091-6749(95)70237-7) Copyright © 1995 Mosby, Inc. Terms and Conditions