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Reverse genetics for crimean-congo hemorrhagic fever virus.
Umeå University, Faculty of Medicine, Department of Clinical Microbiology. Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Virology.
2003 (English)In: Journal of Virology, ISSN 0022-538X, E-ISSN 1098-5514, Vol. 77, no 10, 5997-6006 p.Article in journal (Refereed) Published
Abstract [en]

The widespread geographical distribution of Crimean-Congo hemorrhagic fever (CCHF) virus (more than 30 countries) and its ability to produce severe human disease with high mortality rates (up to 60%) make CCHF a major public health concern worldwide. We describe here the successful establishment of a reverse genetics technology for CCHF virus, a member of the genus Nairovirus, family BUNYAVIRIDAE: The RNA polymerase I (pol I) system was used to generate artificial viral RNA genome segments (minigenomes), which contained different reporter genes in antisense (virus RNA) or sense (virus-complementary RNA) orientation flanked by the noncoding regions of the CCHF virus S segment. Reporter gene expression was observed in different eukaryotic cell lines following transfection and subsequent superinfection with CCHF virus, confirming encapsidation, transcription, and replication of the pol I-derived minigenomes. The successful transfer of reporter gene activity to fresh cells demonstrated the generation of recombinant CCHF viruses, thereby confirming the packaging of the pol I-derived minigenomes into progeny viruses. The system offers a unique opportunity to study the biology of nairoviruses and to develop therapeutic and prophylactic measures against CCHF infections. In addition, we demonstrated for the first time that the human pol I system can be used to develop reverse genetics approaches for viruses in the family BUNYAVIRIDAE: This is important since it might facilitate the manipulation of bunyaviruses with cell and host tropisms restricted to primates.

Place, publisher, year, edition, pages
2003. Vol. 77, no 10, 5997-6006 p.
Identifiers
URN: urn:nbn:se:umu:diva-41885PubMedID: 12719591OAI: oai:DiVA.org:umu-41885DiVA: diva2:407986
Available from: 2011-04-01 Created: 2011-04-01 Last updated: 2017-12-11

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