doi: 10.1016/0027-5107(78)90130-6.
Caffeine inhibition of prereplication repair of mitomycin C-induced DNA damage in human peripheral lymphocytes
- PMID: 714073
- DOI: 10.1016/0027-5107(78)90130-6
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Caffeine inhibition of prereplication repair of mitomycin C-induced DNA damage in human peripheral lymphocytes
Mutat Res.
1978 Sep.
Abstract
Caffeine increases the number of sister-chromatid exchanges (SCE) induced by mitomycin C (MMC) in human peripheral lymphocytes in culture. This enhancement decreases when the treated cells are held in medium before phytohemagglutinin (PHA) stimulation, or when caffeine is added to cultures some time after PHA stimulation but prior to DNA synthesis. There thus appears to be a caffeine-sensitive prereplication repair system, presumably an excision mechanism, capable of repairing a fraction of the MMC-induced DNA lesions.
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