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    • 8. 发明授权
    • Methods for detection of mutagens using luminescence gene
    • 使用发光基因检测诱变剂的方法
    • US5702883A
    • 1997-12-30
    • US326949
    • 1994-10-21
    • Takao ImaedaMasana Hirai
    • Takao ImaedaMasana Hirai
    • C07K14/47C12N15/53C12Q1/02C12Q1/68C07H21/04C12Q1/66
    • C07K14/47C12Q1/025C12Q1/6897
    • A method for detecting or quantitating a mutagenic substance in a sample includes culturing a host microorganism transformed with a recombinant gene comprising an SOS gene and genes expressing luciferase activity and optionally genes expressing an enzyme which catalyzes the production of a substrate for luciferase, positioned downstream of the SOS gene, in a medium to which the sample is added; and measuring a luminescence generated by expression of the gene expressing luciferase activity. The method is sensitive, accurate and non-time consuming; and gene systems used for said method, i.e., a recombinant gene comprising an SOS gene expressed when a DNA is damaged and a gene expressing luciferase activity positioned downstream of the SOS gene, and a host microorganism transformed with said recombinant gene. Preferably the recombinant gene further comprises a gene expressing an enzyme which catalyses the production of a substrate for the luciferase in the down stream of the SOS gene.
    • 用于检测或定量样品中的致突变物质的方法包括培养用包含SOS基因的重组基因和表达荧光素酶活性的基因转化的宿主微生物,以及任选地表达催化产生荧光素酶底物的酶的基因,所述基因位于下游 在添加样品的培养基中的SOS基因; 并测定通过表达荧光素酶活性的基因的表达产生的发光。 该方法灵敏,准确,无耗时; 以及用于所述方法的基因系统,即包含DNA受损时表达的SOS基因的重组基因和位于SOS基因下游的表达荧光素酶活性的基因以及用所述重组基因转化的宿主微生物。 优选地,重组基因还包含表达在SOS基因的下游中催化萤光素酶底物的产生的基因的基因。