Composition comprising tumor cells and extracts and method...

A - Human Necessities – 61 – K

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A61K 39/00 (2006.01) A61K 39/385 (2006.01) C12N 5/09 (2010.01)

Patent

CA 2328507

The present invention is directed to compositions containing hapten-modified tumor cells and extracts and method of treating cancer by administering a therapeutically effective amount of a composition containing a tumor cell or tumor cell extract to a subject in need of such treatment. The tumor cells and extracts of the invention and compositions thereof are capable of eliciting T lymphocytes that have a property of infiltrating a mammalian tumor, eliciting an inflammatory immune response to a mammalian tumor, eliciting a delayed-type hypersensitivity response to a mammalian tumor and/or stimulating T lymphocytes in vitro. The invention also relates to an effective vaccination schedule useful for inducing an antitumor response in a mammalian patient suffering from cancer by inducing at least one of the following: tumor necrosis, tumor regression, tumor inflammation, tumor infiltration by activated T lymphocytes, delayed-type hypersensitivity response, and prolongation of patient survival.

La présente invention concerne des compositions contenant des cellules tumorales et des extraits de tumeurs modifiés par des haptènes, ainsi que des méthodes de traitement du cancer consistant à administrer une quantité thérapeutiquement efficace d'une composition renfermant une cellule tumorale ou un extrait de cellule tumorale à un sujet nécessitant un tel traitement. Les cellules tumorales et les extraits de tumeurs de l'invention, ainsi que les compositions les renfermant sont capables d'éliciter des lymphocytes T capables d'infiltrer une tumeur de mammifère, de susciter une réponse immunitaire inflammatoire contre la tumeur du mammifère, de susciter une réaction d'hypersensibilité du type à retardement par rapport à la tumeur du mammifère, et/ou de stimuler les lymphocytes T in vitro. L'invention concerne également un échéancier de vaccinations efficace, utile pour induire une réponse chez un patient mammifère souffrant d'un cancer par induction d'au moins un élément ci-après : nécrose tumorale, régression tumorale, inflammation tumorale, infiltration tumorale par lymphocytes T activés, réponse d'hypersensibilité de type à retardement, et prolongation de la survie d'un patient.

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