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    • 44. 发明授权
    • Feline infectious peritonitis vaccine and method of preparation
    • 猫传染性腹膜炎疫苗及其制备方法
    • US5460815A
    • 1995-10-24
    • US206268
    • 1994-03-07
    • Richard G. Olsen
    • Richard G. Olsen
    • C12P21/00A61K39/00A61K39/215A61P31/12C07K14/165C12N5/10C12N7/04C12R1/91C12N5/06C12N7/00
    • C07K14/005A61K39/12A61K39/215A61K2039/5252A61K2039/542A61K2039/552A61K2039/55566A61K39/00C12N2770/20022C12N2770/20034
    • 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.
    • 本发明的一个方面包括用于预防猫感染性腹膜炎病毒(FIPV)引起的疾病的疫苗。 这种疫苗包含衍生自体外产生的细胞的FIP病毒前体免疫原,其持续感染FIPV。 形成本发明的疫苗的病毒免疫原的生产中优选的是Crandall Feline Kidney(CrFK)细胞系。 因此,本发明的第二方面包括于1992年9月23日保藏于美国典型培养物保藏中心(ATCC),Rockville,MD的FIP感染的Crandall Feline肾细胞系,并授予加入号CRL11137。 本发明的第三方面涉及一种生产FIP病毒前体免疫原的方法,其包括在含血清的生长培养基中体外培养FIP-持续感染的细胞,随后在条件下将所述培养的细胞转移并保持在无血清培养基中 并且足够的时间积累从所述细胞脱落的FIP病毒前体免疫原,然后从含有重要前体免疫原的上清液中分离细胞。 将含有FIP病毒前体免疫原的上清液与药学上可接受的佐剂混合以形成本文公开的FIP疫苗。