Summary.
Cucumber mosaic virus (CMV) is a three component isodiametric plant virus which is common worldwide and has an extremely wide host range. A pseudorecombinant was made, derived from the RNA3 component of the CMV-S strain, carrying the coat protein (CP) gene, and the RNA1,2 components of the CMV-D strain. This system developed mild mosaic and vein clearing in Xanthi tobacco three weeks after inoculation. The CP gene was then engineered in three different positions, to encode a Hepatitis C virus (HCV) epitope. The selected peptide was the so-called R9 mimotope, a synthetic surrogate derived from a consensus profile of many hypervariable region 1 (HVR1) sequences of the putative HCV envelope protein E2. Serum samples from 60 patients with chronic hepatitis C displayed a significant immunoreactivity to crude plant extracts infected with the chimeric CMV. These results suggest that further investigation should be made into a possible vaccine function for the CMV-HCV mimotope system.
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Natilla, A., Piazzolla, G., Nuzzaci, M. et al. Cucumber mosaic virus as carrier of a hepatitis C virus-derived epitope. Arch Virol 149, 137–154 (2003). https://doi.org/10.1007/s00705-003-0190-x
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DOI: https://doi.org/10.1007/s00705-003-0190-x