Methods for identifying compounds for motion sickness,...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) A61K 38/00 (2006.01) A61K 49/00 (2006.01) A61P 27/00 (2006.01) C07K 14/435 (2006.01) C07K 16/18 (2006.01) C12N 15/12 (2006.01) G01N 33/50 (2006.01)

Patent

CA 2392963

The present invention provides a method of identifying a compound that modulates a mammalian vestibular system. The method consists of administering a test compound to an invertebrate, and measuring a geotactic behavior of the invertebrate, where a compound tht modulates the geotactic behavior of said invertebrate is characterized as a compound that modulates a mammalian vestibular system. The invention also provides a method of identifying a gene that modulates a mammalian vestibular system consisting of obtaining a first and a second strain of an invertebrate; subjecting the first and second invertebrate strains to conditions in which the first strain exhibits a geotactic behavior different than a geotactic behavior exhibited by the second strain; measuring gene expression levels in the first and second strains, and identifying one or more genes that are differentially expressed in the first strain relative to the second strain, whereby a mammalian gene having substantially the same nucleic acid sequence as the one or more differentially expressed genes modulates the mammalian vestibular system.

L'invention concerne un procédé d'identification d'un composé modulant le système vestibulaire mammifère, consistant à administrer un composé à expérimenter à un invertébré et à mesurer le comportement géotactique de l'invertébré, un composé modulant ce comportement géotactique étant caractérisé en tant que composé modulant le système vestibulaire mammifère. L'invention concerne également un procédé d'identification d'un gène modulant un système vestibulaire mammifère, ce procédé comprenant les étapes consistant à obtenir une première et une seconde souche d'un invertébré, à soumettre ces première et seconde souches à des conditions dans lesquelles la première souche démontre un comportement géotactique différent de celui démontré par la seconde souche, à mesurer les taux d'expression génique dans ces première et seconde souches, et à identifier au moins un gène, exprimé dans la première souche d'une manière différente de celle où il est exprimé dans la seconde souche, de sorte qu'un gène mammifère possédant sensiblement la même séquence d'acides nucléiques que le gène exprimé de manière différente, module le système vestibulaire mammifère.

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