Viral variants with altered susceptibility to nucleoside...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 7/00 (2006.01) A61K 39/00 (2006.01) C07K 14/02 (2006.01) C12N 7/01 (2006.01) C12Q 1/70 (2006.01)

Patent

CA 2475446

The present invention relates generally to viral variants exhibiting reduced sensitivity to particular agents and/or reduced interactivity with immunological reagents. More particularly, the present invention is directed to hepatitis B virus (HBV) variants exhibiting complete or partial resistance to nucleoside analogs and/or reduced interactivity with antibodies to viral surface components including reduced sensitivity to these antibodies. The present invention further contemplates assays for detecting such viral variants, which assays are useful in monitoring anti-viral therapeutic regimens and in developing new or modified vaccines directed against viral agents and in particular HBV variants. The present invention also contemplates the use of the viral variants to screen for agents capable of inhibiting infection, replication and/or release of the virus.

La présente invention concerne globalement des variants viraux présentant une sensibilité réduite à des agents spécifiques et/ou une interactivité réduite par rapport à des réactifs immunologiques. L'invention concerne plus précisément des variants du virus de l'hépatite B (HBV) présentant une résistance complète ou partielle à des analogues nucléosidiques et/ou une interactivité réduite par rapport à des anticorps de composants de surface viraux ayant une sensibilité réduite à ces anticorps. La présente invention concerne également des analyses permettant de détecter ces variants viraux, ces analyses étant utiles pour mettre au point des schémas posologiques thérapeutiques antiviraux et pour élaborer des vaccins nouveaux ou modifiés dirigés contre des agents viraux et, plus particulièrement, contre les variants du HBV. La présente invention concerne également l'utilisation des variants viraux pour cribler des agents capables d'inhiber l'infection, la réplication et/ou la libération du virus.

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