Compositions and methods for restoring immune responsiveness...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/00 (2006.01) C12N 5/0783 (2010.01) A61K 35/14 (2006.01) A61K 39/00 (2006.01) C07K 16/28 (2006.01) A61K 35/12 (2006.01)

Patent

CA 2474186

The present invention relates generally to methods for stimulating, activating, and maintaining or increasing the polyclonality of expressed TCRs in a population of T cells. In the various embodiments, cells are stimulated with a surface, wherein the surface has attached thereto one or more agents that ligate a cell surface moiety of at least a portion of the T cells and stimulates at least a portion of the T cells, yielding enhanced proliferation, cell signal transduction, and/or cell surface moiety aggregation. In certain aspects methods for stimulating a population of cells such as T-cells, by cell surface moiety ligation are provided by contacting the population of cells with a surface, that has attached thereto one or more agents that ligate a cell surface moiety thereby inducing cell stimulation, cell surface moiety aggregation, and/or receptor signaling enhancement. Also provided are methods for producing T-cells for the use in diagnostics and the treatment of a variety of indications, including cancer, viral infection, and immune related disorders. Compositions of cells having increased polyclonality produced by these processes are further provided.

L'invention concerne généralement des procédés de stimulation, d'activation et de maintien ou d'augmentation de la polyclonalité de récepteurs de lymphocytes T exprimée dans une population de lymphocytes T. Dans différents modes de réalisation, des cellules sont stimulées au moyen d'une surface sur laquelle sont fixés un ou plusieurs agents qui se lient à une partie de surface cellulaire d'au moins une partie des lymphocytes T et stimule au moins une partie de ces lymphocytes, amenant une augmentation de la prolifération, de la transduction du signal cellulaire, et/ou de l'aggrégation de surface cellulaire. L'invention concerne aussi, dans certains aspects, des procédés de stimulation d'une population de cellules, telles que des lymphocytes T, par adhésion de surface cellulaires consistant à mettre en contact la population de cellules avec une surface sur laquelle sont fixés un ou plusieurs agents qui se lient à une partie de surface cellulaire induisant ainsi une augmentation de la stimulation cellulaire, de l'aggrégation de surface cellulaire et/ou de la signalisation des récepteurs. L'invention concerne aussi des procédés de production de lymphocytes T destinés à des diagnostics et au traitement de différentes indications comprenant cancer, infection virale et troubles immunologiques. Elle concerne enfin des compositions de cellules possédant une polyclonalité améliorée produites au moyen de ces procédés.

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