Cancer treatment combining lymphodepleting agent with ctls...

A - Human Necessities – 61 – K

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A61K 38/19 (2006.01) A61K 31/7076 (2006.01) A61K 35/14 (2006.01) A61K 38/17 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2643337

In a cancer treatment combining cell therapy with chemotherapy, autologous CD8+ T cells are obtained from a patient, activated ex vivo by contacting them with xenogenic antigen presenting cells loaded with selected peptide antigen, thereby generating antigen- specific activated cytotoxic T lymphocytes. Such activated CTLs are administered to the patient in conjunction with a lymphodepletion and CTL maintenance regimen comprising a non-myeloblative but lymphdepleting agent, such as cladribine or denileukin diftitox, and interleukin-2 and interferon-.alpha.-2b stimulatory cytokines.

Dans un traitement du cancer associant une thérapie cellulaire et une thérapie chimique, on utilise des cellules CD8+ T autologues prélevées sur le patient activées ex vivo en les mettant en contact avec des cellules contenant des antigènes xénogéniques chargées avec des antigènes peptidiques sélectionnés de manière à produire des lymphocytes T cytotoxiques (CTL) activés spécifiques desdits antigènes. Les CTLs activés sont administrés en association avec une lymphodéplétion et un régime d'entretien des CTL sans agent myéloblatif, mais avec un agent lymphodépléteur tel que la cladribine ou le dénileukine diftitox, de interleukine 2, et des cytokines stimulatrices de l'interféron-.alpha.-2b.

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