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Title:
RECOMBINANT PARAINFLUENZA VIRUS VACCINES ATTENUATED BY DELETION OR ABLATION OF THE C, D OR V GENES
Document Type and Number:
WIPO Patent Application WO2001003744
Kind Code:
A3
Abstract:
Recombinant parainfluenza virus (PIV) are provided in which expression of the C, D and/or V translational open reading frame(s) (ORFs) is reduced or ablated to yield novel PIV vaccine candidates. Expression of the C, D and/or V ORF(s) is reduced or ablated by modifying a recombinant PIV genome or antigenome, for example by introduction of a stop codon, by a mutation in an RNA editing site, by a mutation that alters the amino acid specified by an initiation codon, or by a frame shift mutation in the targeted ORF(s). Alternatively, the C, D and/or V ORF(s) is deleted in whole or in part to render the protein(s) encoded thereby partially or entirely non-functional or to disrupt protein expression altogether. C, D and/or V ORF(s) deletion and knock out mutants possess highly desirable phenotypic characteristics for vaccine development. These deletion and knock out mutations changes specify one or more desired phenotypic changes in the resulting virus or subviral particle. Vaccine candidates are generated that show a change in viral growth characteristics, attenuation, plaque size, and/or a change in cytopathogenicity, among other novel phenotypes. A variety of additional mutations and nucleotide modifications are provided within the C, D and/or V ORF(s) deletion or ablation mutant PIV of the invention to yield desired phenotypic and structural effects.

Inventors:
DURBIN ANNA P (US)
COLLINS PETER L (US)
MURPHY BRIAN R (US)
Application Number:
PCT/US2000/018523
Publication Date:
September 13, 2001
Filing Date:
July 06, 2000
Export Citation:
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Assignee:
US GOV HEALTH & HUMAN SERV (US)
DURBIN ANNA P (US)
COLLINS PETER L (US)
MURPHY BRIAN R (US)
International Classes:
C12N15/09; A61K9/12; A61K39/102; A61K48/00; A61P31/16; C07K14/115; C12N7/00; C12N7/04; A61K39/00; (IPC1-7): C12N15/45; C07K14/115; C12N7/04; A61K39/155; C12N15/11
Domestic Patent References:
WO1998013501A21998-04-02
Other References:
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