Hapten-modified tumor cell membranes, and methods of making...

A - Human Necessities – 61 – K

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A61K 39/00 (2006.01) A61K 39/385 (2006.01)

Patent

CA 2320969

The present invention is directed to isolated tumor cell membranes, compositions thereof, methods of making the membranes and compositions, and methods of treating cancer. The compositions of the present invention include a composition prepared from a tumor cell which is hapten modified. The tumor cell membranes and compositions of the invention have the properties, when administered to a mammal suffering from a malignant tumor of the same type as said tumor cell, of eliciting T lymphocytes that infiltrate the tumor of the mammal, of eliciting an inflammatory immune response against the tumor of the mammal, and of eliciting a delayed-type hypersensitivity response to the tumor of the mammal. The membranes and compositions of the invention also stimulate T cells in vitro. The methods of the present invention are directed to treating cancer comprising administering a therapeutically effective amount of a tumor cell membrane. The present invention is also directed to a method of making a hapten-modified tumor cell membrane and dosage forms containing the membranes.

L'invention se rapporte à des membranes de cellules tumorales isolées, à des compositions à base de ces dernières, à des procédés de fabrication de ces membranes et compositions et à des procédés de traitement du cancer. Les compositions de la présente invention comprennent une composition préparée à partir d'une cellule tumorale qui a été modifiée par des haptènes. Les membranes de cellules tumorales et les compositions de la présente invention possèdent des propriétés qui leur permettent, lorsqu'elles sont administrées à un mammifère souffrant d'une tumeur maligne du même type que ladite cellule tumorale, d'éliciter les lymphocytes T qui infiltrent la tumeur du mammifère, de susciter une réaction immunitaire inflammatoire contre la tumeur du mammifère et de susciter une réaction d'hypersensibilité du type à retardement par rapport à la tumeur du mammifère. Les membranes et compositions de la présente invention stimulent également les cellules T in vitro. Les procédés de cette invention visant à traiter le cancer comprennent l'administration d'une quantité thérapeutiquement efficace d'une membrane de cellules tumorales. La présente invention concerne également un procédé de fabrication d'une membrane cellule tumorale modifiée par des haptènes et des formes posologiques comprenant ces membranes.

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