Antiviral transgenic plants, vectors, cells and methods

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/82 (2006.01) A01H 1/00 (2006.01) A01H 5/00 (2006.01) C12N 5/10 (2006.01) C12N 9/22 (2006.01) C12N 15/54 (2006.01) C12N 15/55 (2006.01)

Patent

CA 2183461

Isolated 2-5A-dependent RNases, an inteferon-induced enzyme which is activated by 5'-phosphorylated, 2',5'-linked oligoadenylates (2-5A) and implicated in both the molecular mechanisms of interferon action and in the fundamental control of RNA stability in mammalian cells, and encoding sequences therefor are disclosed. The expression cloning and analysis of murine and human 2-5A-dependent RNases is also disclosed. In addidon, recombinant nucleotide sequences, recombinant vectors, recombinant cells and antiviral plants which express, for example, 2-5A-dependent RNase, 2-5A synthetase and/or double-stranded RNA dependent protein kinase (PKR), or other amino acid sequences which have activity that interferes with or inhibits viral replication are disclosed.

L'invention se rapporte à des RNases isolées, dépendantes de 2-5A, à une enzyme induite par l'interféron qui est activée par des oligoadénylates (2-5A) à liaison 2',5', phosphorylées en 5', et impliquée à la fois dans les mécanismes moléculaires de l'action de l'interféron et dans la régulation de base de la stabilité de l'ARN dans des cellules mammaliennes, ainsi qu'à des séquences de codage de celles-ci. L'invention se rapporte également au clonage et à l'analyse d'expression des RNases murines et humaines dépendant de 2-5A, et, de plus, à des séquences nucléotidiques de recombinaison, des vecteurs de recombinaison, des cellules de recombinaison et des plantes antivirales qui expriment, par exemple, la RNase dépendant de 2-5A, la synthétase 2-5A et/ou la protéine kinase dépendant de l'ARN double brin (PKR), ou d'autres séquences d'acides aminés qui ont une activité interférant avec la réplication virale ou l'inhibant.

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