Compositions and methods for enhanced tumor cell immunity in...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 5/10 (2006.01) A61K 31/70 (2006.01) A61K 35/12 (2006.01) A61K 38/19 (2006.01) A61K 39/00 (2006.01) A61K 48/00 (2006.01) C07K 14/495 (2006.01) C12N 15/11 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2195334

The invention provides a method of preventing or reducing the severity of a cancer in a subject by stimulating the subject's immune response against the cancer. The invention provides, for example, a method of stimulating an immune response in a subject by administering to the subject tumor cells that are substantially similar to the subject's cancer cells and that are genetically modified to reduce or inhibit the expression of one or more immunosuppressive agents. The invention also provides a method of preventing or reducing the severity of cancer in a subjet by stimulating the subject's immune response against the cancer by administering to the subject tumor cells that are substantially similar to the subject's cancer cells and that are genetically modified to prevent the expression of an immunosuppressive agent and, in combination with the genetically modified tumor cells, an immunostimulatory agent. The invention further provides compositions useful for practicing the claimed methods.

Cette invetnion se rapporte à un procédé qui sert à prévenir ou à réduire la gravité d'un cancer chez un sujet, en stimulant la réponse immunitaire dudit sujet contre le cancer. Cette invention se rapporte par exemple à un procédé qui permet de stimuler une réponse immunitaire chez un sujet, en administrant audit sujet des cellules tumorales qui sont sensiblement similaires aux cellules cancéreuses du sujet et qui sont génétiquement modifiées pour réduire ou inhiber l'expression d'un ou de plusieurs agents immunosuppresseurs. Cette invention décrit également un procédé qui permet de prévenir ou de réduire la gravité d'un cancer chez un sujet, en stimulant la réponse immunitaire dudit sujet contre le cancer, en administrant audit sujet des cellules tumorales qui sont sensiblement similaires aux cellules cancéreuses dudit sujet et qui sont génétiquement modifiées pour prévenir l'expression d'un agent immunosuppresseur, et en administrant, en combinaison avec les cellules tumorales génétiquement modifiées, également un agent immunostimulateur. Cette invention décrit en outre des compositions permettant de mettre en pratique les procédés révendiqués.

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