Phadia Ab

Jonas Lidholm

Lars Mattsson

Thomas Lundgren

Henrik Everberg

Rudolf Valenta

Paolo Colombo

Dietrich Kraft

Peter Valent

Wolfgang R Sperr

Kerstin Westritschnig

Susanne Spitzauer

Pirjo Lehtonen

Sabine Stumvoll

Verena Niederberger

Ulrica Olsson

Håkan Larsson

Asa Marknell Dewitt

Domenico Geraci

Giovanni Duro

Verena Vienna General Hospital Niederberger

Peter Vienna General Hospital Valent

Susanne c/o Vienna General Hospital Spitzauer

Wolfgang Vienna General Hospital Sperr

Rudolf Vienna General Hospital Valenta

The invention relates to a novel horse allergen consisting of a heterodimeric protein having a first peptide chain and a second peptide chain together having an overall sequence identity of at least 70% with the combined sequences of SEQ ID NO:3 and SEQ ID NO: 4, as well as a single chain protein having an overall sequence identity of at least 70%, such as 75%, 80%, 85%, 90%, 95%, or 98%, with the combined amino acid sequences according to SEQ ID NO: 3 and SEQ ID NO: 4. The invention further relates to the use of the protein in methods of diagnosis and therapy of Type I allergy, and kits and compositions for use in such methods.

Allergen

Methods for producing an allergen composition, methods for in vitro diagnosis of type I allergy, and diagnostic kits for performing diagnosis employ Bos d 23k allergen of SEQ ID NO: 4, or the mature protein thereof, or a variant or fragment of the Bos d 23k allergen or the mature protein sharing epitopes for antibodies with the Bos d 23k allergen or the mature protein. Methods for treatment of a Type I allergy to a mammal and pharmaceutical compositions employ a Bos d 23k allergen of SEQ ID NO: 4, or the mature protein thereof, or a variant or fragment of the Bos d 23k allergen or the mature protein sharing epitopes for antibodies with the Bos d 23k allergen or the mature protein, wherein the Bos d 23k allergen, the mature protein, the variant or the fragment is modified to abrogate or attenuate its IgE binding response.

Recombinantly produced allergens

A method for performing in vitro diagnosis of type 1 allergy, comprises contacting an immunoglobulin-containing body fluid sample from a patient suspected of having Type 1 allergy with an immobilized horse allergen immobilized on a solid support, and detecting the presence, in the sample, of IgE antibodies specifically binding to the horse allergen, wherein the presence of such IgE antibodies specifically binding to the horse allergen is indicative of Type 1 allergy. A method for treatment of Type 1 allergy comprises administering to an individual susceptible to such treatment, the horse allergen, or a form of the horse allergen that is modified to abrogate or attenuate its IgE binding response. The horse allergen may be produced via a vector and a host cell comprising the vector.

Horse allergen and methods

Methods for treatment of a Type I allergy in a mammal comprise administering to an individual in need of such treatment a polypeptide of SEQ ID NO: 1 or the mature protein, amino acids 25-260, of the polypeptide of SEQ ID NO: 1, or a fragment of the polypeptide or the mature protein, which fragment shares epitopes for antibodies with the polypeptide or the mature protein, respectively, or a hypoallergenic form thereof that is modified to abrogate or attenuate its IgE binding response. Diagnostic kits comprise the polypeptide of SEQ ID NO: 1 or the mature protein, amino acids 25-260, of the polypeptide of SEQ ID NO: 1, immobilized on a solid support.

Prostate kallikrein allergen

Methods for in vitro diagnosis of type I allergy comprises the steps of contacting an immunoglobulin-containing body fluid sample from a patient suspected of having type I allergy with a variant or fragment of the mature protein, amino acids 25-260, of the polypeptide of SEQ ID NO: 1, which variant or fragment shares epitopes for antibodies with the mature protein, amino acids 25-260, of the polypeptide of SEQ ID NO: 1; and detecting the presence, in the sample, of IgE antibodies specifically binding to the variant or fragment. The presence of such IgE antibodies specifically binding to the variant or fragment is indicative of a type I allergy in the patient.

The present invention refers to the field of allergy. More specifically, the invention relates to the identification of new allergens from mammals and to diagnosis and treatment of allergy towards mammals. In particular the invention relates to a recombinantly produced canine allergen, Can f 4, or bovine allergen, Bos d 23k, or variants or fragments thereof sharing epitopes with the wildtype allergen, and the use thereof for the manufacture of a diagnostic composition as well as methods for in vitro diagnosis and treatment of allergy.

Prostatic kallikrein for the manufacture of a diagnostic or pharmaceutical composition for diagnosis/treatment of type 1 allergy, especially allergy to dogs.

An isolated horse allergen is disclosed which is a secretoglobin having a molecular weight of 15 kDa under non-reducing conditions and comprising a first peptide chain having a molecular weight of about 5 kDa and a second peptide chain having a molecular weight of about 10 kDa linked together, and variants and fragments thereof sharing epitopes for antibodies therewith. The use of the allergen in diagnosis and therapy is also disclosed as well as a diagnostic kit and a pharmaceutical composition containing the allergen.

The present invention relates to a novel allergen from timothy grass () pollen, Phl p11 as disclosed in SEQ ID NO:2, and use thereof as a reagent and in a diagnositic kit as well as for immunotherapy.

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Knivsta, Sweden

Jonas Lidholm