Screening method of agents for increasing insulin content

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/02 (2006.01) A61K 45/00 (2006.01) A61P 3/10 (2006.01) C07K 14/72 (2006.01) C12Q 1/66 (2006.01) G01N 33/15 (2006.01) G01N 33/50 (2006.01) G01N 33/74 (2006.01)

Patent

CA 2489405

It is intended to disclose a tool of screening an insulin production promoter and/or an insulin content enhancer which comprises a G protein-coupled receptor showing an activity of promoting insulin production when activated or cells expressing this polypeptide. It is also intended to disclose a method of screening an insulin production promoter and/or an insulin content enhancer which comprises the step of contacting the above-described cells or cell membrane thereof with a test substance and the step of analyzing whether or not the above-described polypeptide is activated thereby. The screening tool and the screening method are useful in screening a substance which enhances the insulin content and, therefore, is usable in preventing and/or treating diabetes. It is further intended to disclose a novel insulin content enhancer which contains as the active ingredient a substance obtained by the screening as described above.

L'invention concerne un outil permettant de cribler un promoteur de la production d'insuline et/ou un amplificateur de la teneur en insuline. Cet outil comprend un récepteur couplé à la protéine G, lequel récepteur présente une activité promotrice de la production d'insuline lorsqu'il est activé ou lorsque des cellules expriment ce polypeptide. Cette invention concerne également un procédé permettant de cribler un promoteur de la production d'insuline et/ou un amplificateur de la teneur en insuline. Ce procédé comprend l'étape consistant à mettre en contact les cellules susmentionnées, ou la membrane cellulaire de celles-ci, avec une substance d'essai; et l'étape consistant à déterminer si ledit polypeptide est activé ou non. L'outil de criblage et le procédé de criblage décrit dans cette invention servent au criblage d'une substance qui amplifie la teneur en insuline et, de ce fait, ils peuvent être utilisés pour prévenir et/ou traiter des diabètes. En outre, cette invention concerne un nouvel amplificateur de la teneur en insuline contenant, en tant que principe actif, une substance obtenue par le procédé de criblage susmentionné.

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