Co-expression of gia protein and gi protein coupled receptor...

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G01N 33/50 (2006.01) C07K 14/705 (2006.01) C12N 15/00 (2006.01) C12N 15/10 (2006.01) C12N 15/12 (2006.01) G01N 33/52 (2006.01)

Patent

CA 2324080

A method for detecting compounds that bind to a Gi protein coupled receptor which comprises the steps of culturing a cell in a medium under conditions wherein Gia protein and a Gi protein coupled receptor are co-expressed, contacting the cell with a test compound, and assaying the cell for a cellular response to the compound, the response being an increase in the cytoplasmic calcium concentration, where the cell has been transfected with a gene encoding aGi protein coupled receptor and a gene coding for Gia protein capable of coupling to said Gi protein coupled receptor. Cells useful in such methods, and methods for making such cells, are also provided.

Technique permettant de détecter les composés qui se lient à un récepteur couplé à la protéine G¿i?, qui comprend les étapes suivantes: on cultive une cellule dans un milieu, dans des conditions où la protéine G¿ia? et un récepteur couplé à la protéine G¿i? sont coexprimés, on met en contact la cellule avec un composé à tester et on recherche dans la cellule une réponse cellulaire audit composé, la réponse étant une augmentation de la concentration cytoplasmique du calcium. La cellule a été transfectée avec un gène codant pour un récepteur couplé à la protéine G¿i? et par un gène codant pour une protéine G¿ia? capable de se coupler avec ledit récepteur couplé à la protéine G¿i?. L'invention concerne également les cellules utiles pour ces techniques et les techniques permettant de produire lesdites cellules.

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