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    • 8. 发明授权
    • Yeast mutants useful for indentifying immunosupressants
    • 酵母突变体可用于鉴定免疫抑制剂
    • US5324659A
    • 1994-06-28
    • US923082
    • 1992-07-31
    • Stephen A. ParentLeonardo E. BrizuelaGary L. ChrebetKeith A. Bostian
    • Stephen A. ParentLeonardo E. BrizuelaGary L. ChrebetKeith A. Bostian
    • C12N1/16C12N15/01C12Q1/02C12R1/865G01N33/50
    • C12R1/85C12N15/01G01N33/5008Y10S435/942
    • Disclosed is a process utilizing yeast mutants for identifying active FK-506 type immunosuppressants. The process utilizes Saccharomyces cerevisiae mutants containing an fkr1, fkr2, fkr3 mutant gene or mixture thereof, which are resistant to FK-506 but sensitive to rapamycin. These mutants can be used in a diagnostic procedure for identifying FK-506 and FK-506 type immunosuppressants and in screening assays for compounds and fermentation broths which exhibit FK-506 type immunosuppressive activity. Specifically disclosed are the new yeast mutants, Saccharomyces cerevisiae YKF093, (Merck Culture Collection No. MY 2088) ATCC No. 74055, containing an fkr3 mutant gene, Saccharomyces cerevisiae YKF 012, (Merck Culture Collection No. MY 2096) ATCC No. 74061, which contains an fkr1 mutant gene, Saccharomyces cerevisiae YFK 014, (Merck Culture Collection No. MY 2097) ATCC No. 74062 and YFK-023-17A (Merck Culture Collection No. MY 2098) ATCC No. 74063, both which contain an fkr2 mutant gene and are useful in identifying active FK-506 type immunosuppressants.
    • 公开了利用酵母突变体鉴定活性FK-506型免疫抑制剂的方法。 该方法利用含有fKr1,fkr2,fkr3突变基因或其混合物的酿酒酵母突变体,其对FK-506具有抗性,但对雷帕霉素敏感。 这些突变体可用于鉴定FK-506和FK-506型免疫抑制剂的诊断程序,并用于展示FK-506型免疫抑制活性的化合物和发酵肉汤的筛选试验。 具体公开的是含有fkr3突变基因,酿酒酵母YKF 012(Merck Culture Collection No. MY 2096)ATCC No.74061的新酵母突变体,酿酒酵母YKF093(Merck Culture Collection No. MY 2088)ATCC No.74055 ,其含有fkr1突变基因,酿酒酵母YFK 014(Merck Culture Collection No. MY 2097)ATCC No.74062和YFK-023-17A(Merck Culture Collection No. MY 2098)ATCC No.74063,它们都含有 fkr2突变基因,可用于鉴定活性FK-506型免疫抑制剂。