Method of screening cell death inhibitor

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/02 (2006.01) A61K 38/17 (2006.01) C07K 14/47 (2006.01) C12N 5/10 (2006.01) C12N 15/12 (2006.01) C12P 21/02 (2006.01) G01N 33/50 (2006.01) G01N 33/566 (2006.01)

Patent

CA 2463596

It is intended to provide a method of screening a substance which inhibits cell death induced by the activation of PAPR, in particular, a substance which is useful as a remedy and/or a preventive for rheumatoid arthritis, nerve cell death in brain ischemia, heart cell death after arteriosclerosis reperfusion, autoimmune disruption of pancreatic islet b-cells, cell death following shock or inflammatory reaction due to immune cell death. Also, novel proteins and novel genes encoding the same are provided. The above screening method involves the step of bringing a test substance into contact with cells expressing LTRPC2 protein under conditions allowing the activation of the LTRPC2 protein, and the step of analyzing the inhibition of the activation of the LTRPC2 protein. The above-described novel proteins are rat and mouse LTRPC2 proteins, while the above novel genes are rat and mouse LTRPC2 genes.

La présente invention concerne un procédé de criblage d'une substance qui inhibe la mort cellulaire induite par l'activation de PAPR, notamment une substance qui est utile en tant que remède et/ou en tant que préventif pour la polyarthrite rhumatoïde, la mort des cellules nerveuses liée à l'ischémie cérébrale, la mort des cellules cardiaques après une reperfusion, le dérèglement auto-immun des cellules .beta. des îlots pancréatiques, la mort cellulaire à la suite d'un choc ou d'une réaction inflammatoire due à la mort des cellules immunitaires. Le procédé de criblage selon l'invention comprend une étape qui consiste à mettre en contact une substance de test avec des cellules exprimant la protéine LTRPC2 dans des conditions permettant l'activation de la protéine LTRPC2 et une étape qui consiste à analyser l'inhibition de l'activation de la protéine LTRPC2. Les nouvelles protéines présentées ci-avant sont des protéines LTRPC2 de rat et de souris et les nouveaux gènes sont des gènes LTRPC2 de rat et de souris.

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