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A TRANSGENIC MOUSE FOR MEASUREMENT AND CHARACTERIZATION OF MUTATION INDUCTION IN VIVO

机译:用于体内突变诱变的测量和鉴定的转基因小鼠

摘要

A new strain of mouse is used for determining mutagenic damage caused in vivo by the administration of a known or suspected mutagen. A transgenic mouse, constructed by microinjection of a specially engineered DNA vector into a fertilized mouse egg, carries in the DNA of each of its cells several copies of the injected vector DNA, which is passed on to subsequent generations by normal breeding. The vector DNA carries a target gene for scoring mutations, special DNA sequences permitting the in vitro rescue of the vector from the mouse genomic DNA, and an E. coli origin of replication and ampicillin resistance gene for the selection and propagation of the vector in E. coli. After a mouse has been treated with a possible mutagen, its DNA is isolated from various tissues. The vector DNA is rescued from the genomic DNA and introduced into E. coli where mutations in the target gene can be detected and quantitated.
机译:一种新的小鼠品系用于确定通过施用已知或怀疑的诱变剂在体内引起的诱变损害。通过将经过特殊工程改造的DNA载体显微注射到受精小鼠卵中而构建的转基因小鼠,其每个细胞的DNA都带有几份注射的载体DNA拷贝,通过正常繁殖传给后代。载体DNA带有用于突变标记的目标基因,允许从小鼠基因组DNA体外拯救载体的特殊DNA序列以及用于在E中选择和繁殖载体的大肠杆菌复制起点和氨苄青霉素抗性基因大肠杆菌用可能的诱变剂治疗小鼠后,从各种组织中分离出其DNA。从基因组DNA中拯救出载体DNA,并将其引入大肠杆菌,在大肠杆菌中可以检测和定量目标基因的突变。

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