Epha2 t-cell epitope agonists and uses therefor

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/12 (2006.01) A61K 38/08 (2006.01) A61K 38/17 (2006.01) A61P 35/00 (2006.01) A61P 37/02 (2006.01) C07K 14/705 (2006.01) C12N 15/85 (2006.01) G01N 33/566 (2006.01) G01N 33/574 (2006.01) C12N 9/10 (2006.01) C12N 15/54 (2006.01)

Patent

CA 2533789

EphA2 T-cell epitope agonists are provided herein. The agonists include peptides corresponding to specific fragments of human EphA2 protein containing one or more T-cell epitopes, and conservative derivatives thereof. The EphA2 T- ~cell epitope agonists are useful in an assay, such as an ELISPOT assay, that may be used to determine and/or quantify a patient's immune responsiveness to EphA2. The agonists also are useful in methods of modulating a patient's immune reactivity to EphA2, which has substantial utility as a treatment for cancers that overexpress EphA2, such as renal cell carcinoma (RCC). The EphA2 agonists also can be used to vaccinate a patient against EphA2, by in vivo orex vivo methods.

La présente invention concerne des agonistes d'épitope de cellule T EphA2. Les agonistes comprennent des peptides correspondant à des fragments spécifiques de protéine EphA2 humaine contenant un ou plusieurs épitopes de cellule T et des dérivés classiques correspondants. Les agonistes d'épitope de cellule T EphA2 sont utiles dans un dosage, tel que le dosage ELISPOT, qui peut être utilisé pour déterminer et/ou quantifier la faculté de réponse immunitaire à EphA2. Les agonistes sont également utiles dans des méthodes de modulation de la réactivité du système immunitaire du patient à EphA2, ce qui présente une utilité substantielle en tant que traitement pour les cancers avec surexpression de EphA2, tels que l'hypernéphrome. Les agonistes EphA2 peuvent également être utilisés pour vacciner un patient contre EphA2, au moyen de méthodes in vivo ou ex vivo.

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