Mutagenesis of a shuttle vector plasmid in mammalian cells.
نویسندگان
چکیده
منابع مشابه
Rearrangement and mutagenesis of a shuttle vector plasmid after passage in mammalian cells.
A shuttle vector plasmid that contains sequences from simian virus 40, pBR322, and a bacterial marker gene, galactokinase, has been constructed. After replication in cells permissive for virus progeny, plasmid DNA was introduced into a galactokinase-deficient bacterial strain and the relative frequency of colonies with plasmids but without galactokinase activity was determined. This assay showe...
متن کاملStrategies to analyse mutagenesis in mammalian cells using simian virus 40 or shuttle vectors.
The use of exogeneous DNA probes, which replicate extrachromosomally, is proposed in order to study spontaneous and induced mutagenesis in mammalian cells. Simian virus 40 has already proved to be very useful, since it has provided much important information in this field. Recently, several shuttle vectors have been designed for this purpose; however, it seems that these molecules have high spo...
متن کاملMutagenic events induced by 4-hydroxyequilin in supF shuttle vector plasmid propagated in human cells.
Increased incidence of breast, ovarian and endometrial cancers are observed in women receiving estrogen replacement therapy (ERT). Equilin and equilenin are the major components of the widely prescribed drug used for ERT. These equine estrogens are metabolized primarily to 4-hydroxyequilin (4-OHEQ) and 4-hydroxyequilenin, respectively, which are autoxidized to react with DNA, resulting in the v...
متن کاملGlyoxal, a major product of DNA oxidation, induces mutations at G:C sites on a shuttle vector plasmid replicated in mammalian cells.
Glyoxal is a major product of DNA oxidation in which Fenton-type oxygen free radical-forming systems are involved. To determine the mutation spectrum of glyoxal in mammalian cells and to compare the spectrum with those observed in other experimental systems, we analyzed mutations in a bacterial suppressor tRNA gene (supF) in the shuttle vector plasmid pMY189. We treated pMY189 with glyoxal and ...
متن کاملChemically induced mutagenesis in a shuttle vector with a low-background mutant frequency.
We have developed a recombinant DNA shuttle vector that permits the molecular analysis of mutations induced in human cells by chemical or physical mutagens. The vector is able to replicate as a plasmid in Escherichia coli and in Epstein-Barr virus (EBV)-transformed human lymphoblastoid cell lines and contains the herpes simplex virus type 1 thymidine kinase gene (HSV tk) as the target for mutag...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Molecular and Cellular Biology
سال: 1984
ISSN: 0270-7306,1098-5549
DOI: 10.1128/mcb.4.3.435