Qualitative differential screening

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/68 (2006.01)

Patent

CA 2323231

The invention concerns a method for identifying and/or cloning nucleic acid regions representing qualitative differences associated with alternative splicing events and/or with insertions, deletions located in RNA transcribed genome regions, between two physiological situations, comprising either hybridisation of RNA derived from the test situation with cDNA's derived from the reference situation and/or reciprocally, or double-strand hybridisation of cDNA derived from the test situation with cDNA's derived from the reference situation; and identifying and/or cloning nucleic acids representing qualitative differences. The invention also concerns compositions or banks of nucleic acids representing qualitative differences between two physiological situations, obtainable by the above method, and their use as probe, for identifying genes or molecules of interest, or still for example in methods of pharmacogenomics, and profiling of molecules relative to their therapeutic and/or toxic effects. The invention further concerns the use of dysregulation of splicing RNA as markers for predicting molecule toxicity and/or efficacy, and as markers in pharmacogenomics.

L'invention concerne un procédé d'identification et/ou de clonage de régions d'acides nucléiques représentatives de différences qualitatives associées à des événements d'épissages alternatifs et/ou à des insertions, délétions se trouvant dans des régions du génome transcrites en ARN, entre deux situations physiologiques, comprenant soit l'hybridation d'ARN provenant de la situation test avec les ADNc provenant de la situation de référence et/ou réciproquement, soit l'hybridation d'ADNc double-brin provenant de la situation test avec les ADNc provenant de la situation de référence et l'identification et/ou le clonage d'acides nucléiques représentatifs des différences qualitatives. L'invention concerne également des compositions ou banques d'acides nucléiques représentatifs de différences qualitatives entre deux situations physiologiques, susceptibles d'être obtenues par le procédé décrit ci-dessus, ainsi que leur utilisation comme sonde, pour l'identification de gènes ou molécules d'intérêt, ou encore par exemple dans des méthodes de pharmacogénomique, et de profilage de molécules vis à vis de leurs effets thérapeutiques et/ou toxiques. L'invention concerne aussi l'utilisation des dysrégulations de l'épissage des ARN comme marqueurs de prédiction de la toxicité et/ou de l'efficacité de molécules, ainsi que comme marqueurs de pharmacogénomique.

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