Significant Formation of 8-Hydroxydeoxyguanosine in Photoirradiation of “Photo-Fenton Reagent” with Calf Thymus DNA and L 5178Y cells

Abstract
A significant formation of 8-hydroxydeoxyguanosine (8-OHdG) was observed in photoirradiation of “photo-Fenton reagent” (1) with calf thymus DNA in maximum yield of 1.1%. The ten-fold enhancement of the formation of 8-OHdG compared to the control level was observed in photoirradiation of L5178Y cells with 1. The 8-OHdG formation well corresponds to the site specific DNA-cleaving activity of 1 upon photoirradiation.