Self-replicating RNA molecule from hepatitis C virus
US6956117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2840/206
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A unique HCV RNA molecule is provided having an enhanced efficiency of establishing cell culture replication. Novel adaptive mutations have been identified within the HCV non-structural region that improves the efficiency of establishing persistently replicating HCV RNA in cell culture. This self-replicating polynucleotide molecule contains, contrary to all previous reports, a 5′-NTR that can be either an A as an alternative to the G already disclosed and therefore provides an alternative to existing systems comprising a self-replicating HCV RNA molecule. The G->A mutation gives rise to HCV RNA molecules that, in conjunction with mutations in the HCV non-structural region, such as the G(2042)C/R mutations, possess greater efficiency of transduction and/or replication. These RNA molecules when transfected in a cell line are useful for evaluating potential inhibitors of HCV replication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.