Compounds and methods for inhibiting hepatitis C virus...

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving virus or bacteriophage

Reexamination Certificate

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C424S149100, C530S350000

Reexamination Certificate

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07465537

ABSTRACT:
The inventors have discovered that an ATPase-deficient dominant-negative mutant NS3 protein of hepatitis C virus inhibits activity of the wild-type NS3 protein and inhibits replication of hepatitis C virus (HCV). The solved crystal structure of a multi-enzyme NS3 complex on a DNA substrate is also provided. The inventors have tested a peptide matching the sequence of a portion of NS3 that interacts with another NS3 molecule for inhibiting HCV replication. The peptide inhibits HCV replication. Accordingly, the invention provides a method of inhibiting HCV replication in cells infected with HCV involving transforming the cells with a vector expressing a dominant-negative mutant NS3 gene. The invention also provides a method of inhibiting HCV replication in cells infected with HCV involving administering to the cells a dominant-negative mutant NS3 protein. The invention also provides peptides and agents that inhibit HCV replication and methods of identifying agents that inhibit HCV replication.

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