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- W1981569087 abstract "Polycyclic aromatic hydrocarbons (PAHs) are environmental pollutants, formed during incomplete burning of coal, oil and gas. Several PAHs have carcinogenic and mutagenic potencies, but these compounds must be activated in order to exert their mutagenic effects. One of the principal pathways proposed for metabolic activation of PAHs involves the cytochrome P450 enzymes. The DNA damaging potential of cytochrome P450-activated PAHs is generally associated with their bay and fjord regions, and the DNA repair response of PAHs containing such regions has been thoroughly studied. However, little is known about the repair of DNA damage resulting from metabolites from PAHs without bay and fjord regions. We have investigated the six-ringed PAH anthanthrene (dibenzo[def,mno]chrysene), which does not posses bay or fjord motifs. We analyzed the repair profile of human cell extracts and of cell cultures in response to DNA damage induced by cytochrome P450-activated anthanthrene. In cell extracts, functional nucleotide excision repair (NER) and mismatch repair (MMR) activities were necessary to trigger a response to anthanthrene metabolite-induced DNA damage. In cell cultures, NER was responsible for the repair of anthanthrene metabolite-induced DNA damage. However, when the NER pathway was inactivated, a residual repair pathway performed the DNA repair." @default.
- W1981569087 created "2016-06-24" @default.
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- W1981569087 date "2009-02-01" @default.
- W1981569087 modified "2023-10-09" @default.
- W1981569087 title "Repair of DNA damage induced by anthanthrene, a polycyclic aromatic hydrocarbon (PAH) without bay or fjord regions" @default.
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- W1981569087 doi "https://doi.org/10.1016/j.cbi.2008.10.056" @default.
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