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Efficient cell culture system for hepatitis C virus genotype 7a: Patent #: 8,506,969

Publikation: Patent

Genotype 7a has been identified recently, thus not much is known about the biology of this new, major HCV genotype. The present inventors developed hepatitis C virus 7a/2a intergenotypic recombinants in which the JFH1 structural genes (Core, E1 and E2), p7 and the complete NS2 were replaced by the corresponding genes of the genotype 7a strain QC69 and characterized them in Huh7.5 cells. Sequence analysis of 7a/JFH1 recombinants recovered after viral passage in Huh7.5 cells following 4 independent transfection experiments revealed adaptive mutations in Core, E2, NS2, NS5A and NS5B. In reverse genetic studies the importance of these mutations for improved growth kinetics was shown. Adapted 7a/JFH1 viruses showed growth kinetics, infectivity and RNA titers comparable to a previously developed 3a/JFH1 reference virus. Conclusion: The developed 7a/JFH1 viruses provide a robust in vitro tool for research in HCV genotype 7, including vaccine studies and functional analyses
OriginalsprogEngelsk
IPCA61K 39/12 (20060101); A61K 39/29 (20060101); C12Q 1/70 (20060101); C12N 15/00 (20060101); C12N 5/071 (20100101); C12N 1/20 (20060101)
PatentnummerWO2010/017819
Journaliseringsdato18/02/2010
LandDanmark
Prioritetsdato31/07/2009
PrioritetsnummerPCT/DK2009/050193
StatusUdgivet - 13 aug. 2013

ID: 140393144