Recombinant Rabies Virus Compositions
    8.
    发明申请
    Recombinant Rabies Virus Compositions 有权
    重组狂犬病病毒组合物

    公开(公告)号:US20080003657A1

    公开(公告)日:2008-01-03

    申请号:US11571842

    申请日:2005-07-12

    IPC分类号: C12N7/01 C07H21/04

    摘要: Recombinant rabies viruses in which the arginine residue of the glycoprotein (G) at amino acid position 333 is exchanged, renders these viruses nonpathogenic for immunocompetent mammals regardless of the route of infection. Some of these recombinant rabies viruses after several serial virus passages in newborn mice can become pathogenic for adult mice. The reversion to the pathogenic phenotype is associated with a thymidine to adenosine mutation (TôA) at position 639 of the G gene, which results in an asparagine to lysine exchange at position 194 of G. The codon at position 637-639 was changed by site directed mutagenesis to replace asparagine at position 194 by an amino acid that minimized the possibility for an AsnôLys exchange at amino acid position 194 of G and prevents reversion to a pathogenic form of the virus.

    摘要翻译: 在氨基酸位置333处交换糖蛋白(G)的精氨酸残基的重组狂犬病毒使得这些病毒对于免疫活性的哺乳动物是非致病性的,而不管感染途径如何。 新生小鼠中几种连续病毒传代后的这些重组狂犬病病毒中的一些可能成为成年小鼠致病的。 对病原性表型的逆转与G基因位置639处的胸苷与腺苷突变(TôA)相关,其导致在G的194位的天冬酰胺至赖氨酸交换。位置637-639的密码子被位点 定向诱变用194位氨基酸替代位置194处的天门冬酰胺,其最小化在G的氨基酸位置194处的AsnôLys交换的可能性,并防止逆转到病毒的病原形式。