An in vitro method of evaluating the effects of a substance

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/02 (2006.01) G01N 33/50 (2006.01) G01N 33/566 (2006.01) G01N 33/74 (2006.01)

Patent

CA 2120604

An in vitro method of evaluating the antagonistic versus agonistic effects of a receptor-binding test substance on a selected type of cells containing endogenous intra-cellular hormone receptors, is disclosed. Said test substance, and separately a reference substance, known to be either an antagonist or an agonist, are incubated with said selected type of cells, and the magnitude of the selected cellular response resulting from hormone/receptor interaction, is analyzed. In case the method is performed on at least two selected types of cells which derive from different kinds of tissues, it is possible to evaluate the pattern of antagonistic versus agonistic effects of the selected test substance on said kinds of tissues.

L'invention décrit un procédé in vitro d'évaluation des effets antagonistes par rapport aux effets agonistes d'une substance d'essai de fixation à un récepteur sur un type sélectionné de cellules contenant des récepteurs d'hormones intracellulaires endogènes. On fait incuber avec ledit type sélectionné de cellules ladite substance d'essai, ainsi que, séparément, une substance de référence, connue pour être soit antagoniste soit agoniste, et on analyse l'intensité de la réaction cellulaire sélectionnée résultant de l'interaction entre l'hormone et le récepteur. Dans le cas où on met le procédé en application sur au moins deux types sélectionnés de cellules provenant de différents types de tissus, il est possible d'évaluer les effets antagonistes par rapport aux effets agonistes de la substance d'essai sélectionnée sur lesdits types de tissus.

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