Method of direct selection of antigen-specific t cells

C - Chemistry – Metallurgy – 12 – N

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Details

C12N 5/0783 (2010.01) A61K 35/14 (2006.01) C12Q 1/02 (2006.01) G01N 33/483 (2006.01) G01N 33/569 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2330678

The invention provides a method for convenient analysis and cell separation of antigen-specific T cells based on one or more products secreted by these cells in response to antigen stimulation. The T cells are provided with a capture moiety for the product, which can then be used directly as a label in some instances, or the bound product can be further labeled via label moieties that bind specifically to the product and that are labeled with traditional labeling materials such as fluorophores, radioactive isotopes, chromophores or magnetic particles. The labeled cells are then separated using standard cell sorting techniques based on these labels. Such techniques include flow cytometry, magnetic gradient separation, centrifugation, and the like.

La présente invention concerne un procédé destiné à faciliter l'analyse et la séparation de cellules T antigènes-spécifiques, basé sur un ou plusieurs produits sécrétés par ces cellules en réponse à une stimulation antigénique. Les cellules T contiennent un groupe fonctionnel de capture pour le produit, peuvent être, dans certains cas, directement utilisées comme marqueur ; il est aussi possible de marquer le produit lié, à l'aide de groupes marqueurs qui se lient spécifiquement au produit et qui sont marqués à l'aide de matériaux traditionnels tels que des fluorophores, des isotopes radioactifs, des chromophores ou des particules magnétiques. Les cellules marquées sont alors séparées au moyen de techniques de triage de cellules standards qui font intervenir le marquage. De telles techniques comprennent la cytométrie de flux, la séparation sous gradient magnétique, la centrifugation et d'autres techniques du même genre.

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