Abstract

We will attempt to (1) permanently express different influenza A virus genes (gene complexes) in eukaryotic cells via bovine papilloma virus vectors. This system will allow us to study the functional interaction of viral proteins and to establish an effective complementation system for the isolation of novel influenza A virus mutants. A major effort will be directed towards (2) rescuing cloned viral cDNA into infectious virus. This approach would allow--for the first time--site-specific alterations in the genome of a negative strand RNA virus and the generation of specific mutants including those to be used as viral vaccine strains. We also plan to (3) explore the nucleophilic signals of the influenza A NS1 and NS2 proteins in order to arrive at an understanding of the requirements necessary for intracellular migration of these proteins. We will (4) continue structural work on influenza virus genes and plan to clone and sequence the remaining genes of an influenza C virus. Finally, (5) work will continue with respect to the precise measurements of mutation rates of influenza A, B and C viruses, and we hope to compare these values with that obtained for an RNA tumor virus. These studies should allow us to compare a fundamental genetic property among different virus classes and to correlate error rate of viral polymerases with variability of viruses in nature.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Method to Extend Research in Time (MERIT) Award (R37)
Project #
5R37AI018998-09
Application #
3480997
Study Section
Experimental Virology Study Section (EVR)
Project Start
1982-05-01
Project End
1992-04-30
Budget Start
1990-05-01
Budget End
1991-04-30
Support Year
9
Fiscal Year
1990
Total Cost
Indirect Cost

  Institution

Name
Mount Sinai School of Medicine
Department
Type
Schools of Medicine
DUNS #
City
New York
State
NY
Country
United States
Zip Code
10029

  Publications

O'Neill, R E; Talon, J; Palese, P (1998) The influenza virus NEP (NS2 protein) mediates the nuclear export of viral ribonucleoproteins. EMBO J 17:288-96
O'Neill, R E; Jaskunas, R; Blobel, G et al. (1995) Nuclear import of influenza virus RNA can be mediated by viral nucleoprotein and transport factors required for protein import. J Biol Chem 270:22701-4
Piccone, M E; Fernandez-Sesma, A; Palese, P (1993) Mutational analysis of the influenza virus vRNA promoter. Virus Res 28:99-112
Li, X; Palese, P (1992) Mutational analysis of the promoter required for influenza virus virion RNA synthesis. J Virol 66:4331-8
Luo, G; Palese, P (1992) Genetic analysis of influenza virus. Curr Opin Genet Dev 2:77-81
Luo, G; Bergmann, M; Garcia-Sastre, A et al. (1992) Mechanism of attenuation of a chimeric influenza A/B transfectant virus. J Virol 66:4679-85
Bergmann, M; Garcia-Sastre, A; Palese, P (1992) Transfection-mediated recombination of influenza A virus. J Virol 66:7576-80
Lin, D A; Roychoudhury, S; Palese, P et al. (1991) Evolutionary relatedness of the predicted gene product of RNA segment 2 of the tick-borne Dhori virus and the PB1 polymerase gene of influenza viruses. Virology 182:1-7
Luo, G X; Luytjes, W; Enami, M et al. (1991) The polyadenylation signal of influenza virus RNA involves a stretch of uridines followed by the RNA duplex of the panhandle structure. J Virol 65:2861-7
Muster, T; Subbarao, E K; Enami, M et al. (1991) An influenza A virus containing influenza B virus 5' and 3' noncoding regions on the neuraminidase gene is attenuated in mice. Proc Natl Acad Sci U S A 88:5177-81

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