Infectious enveloped RNA virus antigenic chimeras.
Random insertion mutagenesis has been used to construct infectious Sindbis virus structural protein chimeras containing a neutralization epitope from a heterologous virus, Rift Valley fever virus. Insertion sites, permissive for recovery of chimeric viruses with growth properties similar to the parental virus, were found in the virion E2 glycoprotein and the secreted E3 glycoprotein. For the E2 chimeras, the epitope was expressed on the virion surface and stimulated a partially protective immune response to Rift Valley fever virus infection in vivo. Besides providing a possible approach for developing live attenuated vaccine viruses, insertion of peptide ligands into virion surface proteins may ultimately allow targeting of virus infection to specific cell types.
Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110-1093.
S D
SD
London
A L
AL
Schmaljohn
J M
JM
Dalrymple
C M
CM
Rice
D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D000914:Antibodies, Viral / Q000276:immunology; D000954:Antigens, Surface / Q000235:genetics / Q000276:immunology; D000956:Antigens, Viral / Q000737:chemistry / Q000235:genetics*; D001483:Base Sequence; D002678:Chimera; D003001:Cloning, Molecular; D004252:DNA Mutational Analysis; D000939:Epitopes; D007114:Immunization; D008562:Membrane Glycoproteins / Q000235:genetics / Q000276:immunology; D051379:Mice; D008969:Molecular Sequence Data; D009500:Neutralization Tests; D012295:Rift Valley Fever / Q000517:prevention & control; D012296:Rift Valley fever virus / Q000235:genetics / Q000276:immunology*; D012845:Sindbis Virus / Q000235:genetics* / Q000276:immunology
D000911:Antibodies, Monoclonal; D000914:Antibodies, Viral; D000954:Antigens, Surface; D000956:Antigens, Viral; D000939:Epitopes; D008562:Membrane Glycoproteins