METHOD OF MAKING HERPES SIMPLEX TYPE 1 MUTANTS AND MUTANTS SO PRODUCED
    4.
    发明公开
    METHOD OF MAKING HERPES SIMPLEX TYPE 1 MUTANTS AND MUTANTS SO PRODUCED 失效
    单纯疱疹病毒突变体的HERGESTELLUNG而这样产生突变体

    公开(公告)号:EP0833900A1

    公开(公告)日:1998-04-08

    申请号:EP96916677.0

    申请日:1996-05-28

    申请人: MERCK & CO., INC.

    IPC分类号: C12N9 C12N15

    CPC分类号: C12N9/503 C12N15/102

    摘要: A method for introducing a mutation into a desired site in Herpes Simplex Virus Type 1 uses a set of starting vectors, where each starting vector has a fragment of the substantially complete HSV-1 genome and also DNA which overlaps with a sequential genomic fragment contained in other starting vectors, so that upon co-transfection of a host cell, replication of viral DNA, and recombination, a mutated replicable virus is formed. The starting vector containing a gene which is to be mutated is replaced by replacement vectors. The replacement vectors contain a copy of the mutated gene and overlapping DNA, and genomic DNA which was present in the starting vector. A host cell is transformed with the replacement vectors and the remaining starting vectors under conditions allowing replication of viral DNA and recombination to form a replicating mutated virus. In preferred embodiments, the protease gene is mutated.