Differential gene expression in specific regions of the...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) C12N 5/10 (2006.01)

Patent

CA 2371212

The present invention provides nucleic acid molecules that can function as PCR primers for the detection of contactin mRNA in a sample. Such nucleic acid molecules can be labeled and can be provided in a kit. The present invention also includes a method of detecting the presence of a neurodegenerative disease such as multiple sclerosis, including providing a sample from a patient and measuring the amount of contactin protein or contactin mRNA expressed in the sample. The present invention further provides a method for identifying which patents having a neurodegenerative disease are likely to respond to a treatment for a neurodegenerative disease. The present invention further includes compositions of matter that include an isolated cell or a cell in culture that expresses an increased or decreased amount of contactin as compared to a control cell. The present invention also includes a method for screening compounds for the activity of reducing or enhancing the expression of contactin and compositions or compounds, including pharmaceutical compositions, identified by this method. Also included are methods of treating a neurodegenerative disease using such compositions or compounds. The present invention also includes methods of identifying pharmaceutical targets for compounds that modulate contactin expression or activity and targets identified by such methods.

L'invention concerne des molécules d'acide nucléique fonctionnant en tant qu'amorces de réaction PCR, dans la détection d'ARNm contactine, dans un échantillon. Il est possible de marquer ces molécules d'acide nucléique et de les préparer dans une trousse. L'invention concerne également un procédé de détection d'une maladie neurodégénérative, telle que la sclérose en plaques, ce procédé consistant à prélever un échantillon sur un patient, et à mesurer la quantité de protéine contactine ou d'ARNm contactine exprimée dans l'échantillon. L'invention concerne encore un procédé d'identification de patients souffrant d'une maladie neurodégénérative et susceptibles de répondre au traitement d'une telle maladie, de même que des compositions de matière comprenant une cellule isolée ou une cellule placée dans un culture qui exprime une quantité accrue ou diminuée de contactine par rapport à une cellule témoin. L'invention concerne aussi un procédé de criblage de composés, servant à mettre en évidence leur activité de réduction ou d'augmentation de l'expression de la contactine, ainsi que des compositions ou composés, notamment des compositions pharmaceutiques, identifiés à l'aide de ce procédé. On décrit encore des méthodes de traitement d'une maladie neurodégénérative à l'aide de tels composés ou compositions, ainsi que des procédés d'identification de cibles pharmaceutiques destinées à des composés modulant l'expression ou l'activité de la contactine, ainsi que des cibles identifiées à l'aide de tels procédés.

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