Relative frequencies of homologous recombination between plasmids introduced into DNA repair-deficient and other mammalian somatic cell lines - PubMed (original) (raw)
Comparative Study
doi: 10.1007/BF01232460.
Affiliations
- PMID: 2218721
- DOI: 10.1007/BF01232460
Comparative Study
Relative frequencies of homologous recombination between plasmids introduced into DNA repair-deficient and other mammalian somatic cell lines
W P Wahls et al. Somat Cell Mol Genet. 1990 Jul.
Abstract
Twelve mammalian somatic cell lines, some of them DNA damage-sensitive mutants paired with their respective wild-type parental lines, were assayed for their ability to catalyze extrachromosomal, intermolecular homologous recombination between pSV2neo plasmid recombination substrates. All of the somatic cell lines analyzed are capable of catalyzing homologous recombination; however, there is a wide range of efficiencies with which they do so. Five human cell lines display a fourfold range of recombination frequencies, and six hamster cell lines vary almost 20-fold. Linearizing one of the recombination substrates stimulates recombination in all but one of the cell lines. Two of the three paired mutant cell lines display a threefold reduction in their ability to catalyze homologous recombination when compared to their respective parental cell lines, indicating that the mutations that render them sensitive to DNA damaging agents might also play a role in homologous recombination.
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