Hcv variants

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/51 (2006.01) C07H 21/00 (2006.01) C07H 21/04 (2006.01) C07K 14/18 (2006.01) C12N 5/10 (2006.01) C12N 7/01 (2006.01) C12N 15/63 (2006.01) C12N 15/85 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2409873

HCV variants are described. The variants include polynucleotides comprising non-naturally occurring HCV sequences and HCV variants that have a transfection efficiency and ability to survive subpassage greater than HCV that have wild-type polyprotein coding regions. Expression vectors comprising the above polynucleotides and HCV variants are also described, as are the provision of cells and host cells comprising the expression vectors. Methods for identifying a cell line that is permissive for infection with HCV are also provided, as are vaccines comprising the above polynucleotides in a pharmaceutically acceptable carrier. Additionally, methods for inducing immunoprotection to HCV in a primate are described, as are methods for testing a compound for inhibiting HCV replication.

La présente invention concerne des variantes du VHC (virus de l'hépatite C). Ces variantes incluent des polynucléotides comprenant des séquences de VHC n'existant pas naturellement et des variantes du VHC qui ont une efficacité et aptitude à la transfection leur permettant de survivre à un sous-passage supérieur à ceux des VHC à région codant les polyprotéines de type sauvage. L'invention concerne également, d'une part des vecteurs d'expression comprenant ces polynucléotides, et d'autre part des variantes de VHC, ainsi que des cas de cellules et de cellules hôtes comprenant ces vecteurs d'expression. L'invention concerne en outre des procédés pour l'identification d'une lignée cellulaire qui laisse passer l'infection par le VHC, mais également des vaccins comprenant ces polynucléotides sous une forme pharmaceutiquement admise. L'invention concerne enfin des procédés permettant l'induction d'une immunoprotection contre le VHC chez un primate, et des procédés pour tester un composé destiné à inhiber la réplication du VHC.

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