Partial peptide of survivin presented on mhc class ii...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/09 (2006.01) A61K 38/00 (2006.01) A61K 39/00 (2006.01) A61P 35/00 (2006.01) A61P 37/04 (2006.01) C07K 7/08 (2006.01) C07K 16/32 (2006.01)

Patent

CA 2719964

The object aims to provide: a novel tumor antigen; a novel therapeutic agent useful in a method for treating a malignant neoplasm by utilizing the tumor antigen; and a tumor antigen which can be used as the therapeutic agent. Thus, disclosed are: a novel tumor antigen which has an epitope capable of inducing a Th1 cell which is a CD4-positive T cell specific to Survivin; and use of the tumor antigen. Specifically disclosed is a polypeptide which comprises an amino acid sequence depicted in SEQ ID NO:17 or the like and has an activity to cause the production of a cytokine by a Th cell that is a cell specific to Survivin. The peptide can induce a Th cell that is specific to Survivin and can cause the production of a cytokine by the Sur/Th cell when the peptide is incubated together with an antigen-presenting cell and a CD4-positive T cell.

L'invention concerne un nouvel antigène tumoral, un nouvel agent thérapeutique utile dans un procédé de traitement d'un néoplasme malin employant l'antigène tumoral, et un antigène tumoral qui peut être utilisé comme agent thérapeutique. Ainsi, l'invention concerne un nouvel antigène tumoral qui comprend un épitope capable d'induire une cellule Th1 qui est une cellule T CD4-positive spécifique de la survivine, et l'utilisation de l'antigène tumoral. Elle concerne spécifiquement un polypeptide qui comprend une séquence d'acides aminés présentée dans SEQ ID NO:17 ou une séquence similaire et qui a une activité provoquant la production d'une cytokine par une cellule Th qui est une cellule spécifique de la survivine. Le peptide peut induire une cellule Th qui est spécifique de la survivine et peut provoquer la production d'une cytokine par la cellule Sur/Th cell lorsque le peptide est incubé avec une cellule présentant l'antigène et une cellule T CD4-positive.

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