Universal chimera bank

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/00 (2006.01) C12N 5/071 (2010.01) A01N 1/02 (2006.01) A61K 35/12 (2006.01) A61K 35/14 (2006.01) A61K 39/395 (2006.01) A61K 45/06 (2006.01) C07K 16/28 (2006.01)

Patent

CA 2486759

A method is provided for obtaining mixed donor-recipient chimeric cells, comprising the steps of (a) administering to an allograft recipient a short- term immunosuppressive regimen that depletes about 50% to about 99.9% of recipient T cells circulating in the peripheral blood of the recipient; (b) implanting an allograft from a donor into the recipient; (c) allowing the development of mixed donor-recipient chimeric cells in the recipient after completion of the immunosuppressive regimen; and (d) harvesting the chimeric cells from the recipient. The invention further provides method for compiling a library of chimeric cells and using the library to select of chimeric cells for the induction of tolerance to an allograft in a na~ve or previously transplanted recipient.

L'invention concerne un procédé permettant d'obtenir des cellules chimères mélangées donneur-receveur comprenant les étapes suivantes : (a) administrer un régime immunosuppresseur à court terme à un receveur d'allogreffe qui épuise de 50 à 99 % des lymphocytes T du receveur, ces derniers circulant dans le sang périphérique du receveur ; (b) implanter une allogreffe d'un donneur chez un receveur ; (c) permettre le développement de cellules chimères mélangées donneur-receveur chez le receveur après achèvement du régime immunosuppresseur ; (d) récolter les cellules chimères du receveur. L'invention concerne également un procédé permettant de compiler une bibliothèque de cellules chimères et d'utiliser ladite bibliothèque de cellules chimères pour l'induction de tolérance à une allogreffe chez un receveur naïf ou transplanté antérieurement.

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