Oligonucleotides for regulating the gene coding for...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/11 (2006.01) A61K 31/7088 (2006.01) A61P 19/02 (2006.01) A61P 37/00 (2006.01) C12Q 1/68 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2440956

The invention relates to oligonucleotides which can directly or indirectly modulate expression of the gene coding for the necrosis factor of alpha tumors (TNF.alpha.) in different species or genes controlled thereby. Said oligonucleotides are characterized in that they comprise a constant part - GGGGNGGG -, wherein N = T,A or U, oriented from 5' to 3' or from 3' to 5', which is complementary to a target sequence; and two variable parts, situated on each side of the constant part, enabling the oligonucleotides to interact in a specific manner either directly or indirectly with the target in the gene TNF.alpha. of the species considered, whereby the base at each of the ends which is adjacent to the constant part is a purine. The invention can be used in diagnosis and therapy and as search tools.

L'invention vise des oligonucléotides capables de moduler directement ou indirectement l'expression du gène codant pour le facteur nécrosant des tumeurs alpha (TNF.alpha.) dans différentes espèces et ou de gènes sous son contrôle. Ces oligonucléotides sont caractérisés en ce qu'ils comportent: une partie constante - GGGGNGGG -, oú N = T,A ou U, orientée de 5' vers 3' ou de 3' vers 5', complémentaire d'une séquence cible; deux parties variables, situées de part et d'autre de la partie constante, conférant aux oligonucléotides une spécifité d'interaction directe ou indirecte avec la cible dans le gène TNF.alpha. de l'espèce considérée, dont la base à chacune des extrémités, adjacente à la partie constante, est une purine. Applications en diagnostic et en thérapeutique, et comme outils de recherches.

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