Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Virus or component thereof
Patent
1994-03-07
1995-10-24
Mosher, Mary E.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Virus or component thereof
4352351, 4352402, A61K 39215, C12N 700, C12N 506, C12N 510
Patent
active
054608155
ABSTRACT:
One aspect of the present invention comprises a vaccine for the prevention of disease caused by feline infectious peritonitis virus (FIPV). Such vaccine comprises FIP viral precursor immunogens derived from in vitro produced cells persistently infected with FIPV. Preferred in the production of viral immunogens forming the vaccine of the present invention is the Crandall Feline Kidney (CrFK) cell line. Thus, a second aspect of the invention comprises FIP-infected Crandall Feline Kidney cell line, deposited at the American Type Culture Collection (ATCC), Rockville, MD, on Sep. 23, 1992, and granted Accession No. CRL11137. A third aspect of the invention relates to a method of producing FIP viral precursor immunogens, which comprises culturing in vitro FIP-persistent infected cells in a serum-containing growth medium, subsequently transferring and maintaining said cultured cells in a serum-free medium under conditions and for a time adequate to accumulate FIP viral precursor immunogens shed from said cells, and then separating the cells from the supernatant containing the vital precursor immunogens. The supernatant containing the FIP viral precursor immunogens is blended with a pharmaceutically-acceptable adjuvant in order to form the FIP vaccine disclosed herein.
REFERENCES:
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Harry Vennema et al., "Primary Structure of the Membrane and Nucleocapsid Protein Genes of Feline Infectious Peritonitis Virus and Immunogenicity of Recombinant . . . ", Virology, Dec. 1990, pp. 1-9.
Harry Vennema, "The Proteins of Feline Infectious Peritonitis Coronavirus: Their Biosynthesis and Involvement in Pathogenesis", Dec. 1, 1961, pp. 5-139.
Gerber, J. D. et al. (90) Vaccine 8: 536-542.
Mosher Mary E.
Parhelion Corporation
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