Abstract
8-oxo-7,8-dihydroguanine (8-oxoG) is a potent mutagenic lesion that forms at elevated levels in cellular DNA and is repaired with low efficiency in human cells. Unlike its human counterpart, the Drosophila S3 ribosomal/repair protein is endowed with a vigorous 8 oxoG repair activity that is associated to β,δ-elimination AP lyase activity. We have recently observed that pure GST-tagged Drosophila S3 protein can significantly accelerate the in vitro repair of 8 oxoG performed by human and mouse cell extracts [Cappelli et al., unpublished data]. In this work, we have transfected Chinese hamster cells with mammalian expression vectors containing the Drosophila S3 cDNA. The cells synthesized both S3 mRNA and protein but no improved repair of 8 oxoguanine was observed. Factors important for the proper expression of Drosophila genes in mammalian cells are discussed.
Original language | English |
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Pages (from-to) | 113-121 |
Number of pages | 9 |
Journal | Teratogenesis Carcinogenesis and Mutagenesis |
Issue number | SUPPL. 1 |
Publication status | Published - 2003 |
ASJC Scopus subject areas
- Oncology
- Genetics
- Genetics(clinical)
- Toxicology
- Health, Toxicology and Mutagenesis