Materials and methods for altering an immune response to...

A - Human Necessities – 61 – K

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A61K 35/12 (2006.01) C12N 5/071 (2010.01) A61K 35/14 (2006.01) A61L 27/38 (2006.01) A61P 37/06 (2006.01) C12N 11/00 (2006.01)

Patent

CA 2605080

Disclosed herein are materials and methods for modulating an immunologically adverse response to an exogenous or endogenous immunogen, including a cell, tissue, or organ associated immunogen. An implantable material comprising cells, such as but not limited to endothelial cells, anchored or embedded in a biocompatible matrix can modulate an adverse immune or inflammatory reaction to exogenous or endogenous immunogens, including response to non-syngeneic or syngeneic cells, tissues or organs, exogenous immunogens or stimuli, as well as ameliorate an autoimmune condition. The implantable material can be provided prior to, coincident with, or subsequent to occurrence of the immune response or inflammatory reaction. The implantable material can induce immunological acceptance in a transplant patient, reduce graft rejection and reduce donor antigen immunogenicity.

L'invention concerne des matériaux et des méthodes permettant de moduler une réponse contraire au plan immunologique à un agent immunogène exogène ou endogène, y compris un agent immunogène associé à des cellules, tissus ou organes immunogènes. Un matériau implantable comprenant notamment, mais pas uniquement, des cellules endothéliales ancrées ou nichées dans une matrice biocompatible peut moduler une réaction immunitaire ou inflammatoire contraire à des agents immunogènes exogènes ou endogènes, notamment une réponse à des cellules, tissus ou organes non syngenéiques ou syngénéiques, à des agents ou des stimuli immunogènes exogènes, et améliorer un état auto-immun. Le matériau implantable peut être utilisé avant, pendant ou après la survenue d'une réponse immunitaire ou d'une réaction inflammatoire. Ce matériau implantable peut induire une acceptation immunologique chez un patient transplanté, réduire les risques de rejet de la greffe et atténuer l'immuno-génicité antigénique du donneur.

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