Transcriptional regulator of genes involved in the control...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/12 (2006.01) A61K 31/7088 (2006.01) A61K 35/12 (2006.01) A61K 38/17 (2006.01) A61K 45/06 (2006.01) A61K 48/00 (2006.01) A61P 35/00 (2006.01) C07K 14/47 (2006.01) C12N 5/10 (2006.01) C12N 15/79 (2006.01) C12P 21/00 (2006.01) C12Q 1/02 (2006.01) C12Q 1/68 (2006.01) G01N 33/574 (2006.01)

Patent

CA 2448384

Constitutive expression of the tumor suppressor genes p53 and IRF1 (interferon regulatory factor 1) is required for the maintenance of the cellular growth control during genotoxic damage or abberant proliferation. A transcriptional regulatory element within the promoter region of both the p53 and IRF-1 genes which binds a positive transcription factor, denoted GAAP-1 or GAAP-2 (IRF1 p53 common sequence binding factor). The invention relates to the identification and cloning of the GAAP-1 or GAAP-2 cDNA and to the identification of the encoded protein corresponding to the 75kDa product of the alternatively sliced PRDII-BF1 messenger RNA precursor.

L'expression constitutive des gènes supresseurs de tumeur p53 et IRF1 (facteur régulateur d'interféron 1) est nécessaire pour maintenir la régulation de la croissance cellulaire au cours de phénomènes de détérioration génotoxique ou de prolifération aberrante. L'invention concerne un élément régulateur transcriptionnel situé dans la région promotrice à la fois des gènes p53 et IRF-1, qui se fixe à un facteur de transcription positive, figurant sous l'appellation GAAP-1 ou GAAP-2 (facteur de liaison de séquence commune IRF1 p53). L'invention concerne l'identification et le clonage de l'ADN complémentaire GAAP-1 ou GAAP-2 et l'identification de la protéine codée correspondant au produit 75 kDa du précurseur d'ARN messager PRDII-BF1 qui est sinon coupé.

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