Methods for enhanced antigen presentation on...

A - Human Necessities – 01 – N

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A01N 63/00 (2006.01) C07H 21/04 (2006.01) C12N 5/06 (2006.01) C12N 5/10 (2006.01) C12N 15/63 (2006.01) C12N 15/86 (2006.01)

Patent

CA 2322750

The present invention provides compositions and methods for immunotherapy, and in particular for inducing an immune response against an antigen in a patient. Thus, in one aspect, this invention provides genetically modified antigen- presenting cells which are more potent presenters of exogenous peptide than parental antigen-presenting cells. Compositions comprising these genetically modified cells and a carrier, such as pharmaceutically acceptable carrier, are further provided by this invention. The genetically modified antigen- presenting cells of this invention can be used in adoptive immunotherapy or to expand a substantially pure population of immune effector cells. Methods for expansion of the substantially pure population of cells are also provided by this invention.

La présente invention concerne des compositions et des méthodes d'immunothérapie, destinées en particulier à induire une réponse immunitaire contre un antigène, chez un patient. Dans un aspect, cette invention concerne des cellules génétiquement modifiées présentatrices de l'antigène, qui constituent des présentatrices plus puissantes d'un peptide exogène que les cellules mères présentatrices de l'antigène. L'invention concerne également des compositions renfermant ces cellules génétiquement modifiées, ainsi qu'un excipient, par exemple un excipient pharmaceutiquement acceptable. Ces cellules génétiquement modifiées présentatrices de l'antigène peuvent notamment être utilisées en immunothérapie adoptive, ou pour accroître une population sensiblement pure de cellules immunitaires effectrices. L'invention concerne enfin des méthodes permettant accroître une population sensiblement pure de cellules.

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