TY - JOUR
T1 - Kinetics of ultraviolet induced DNA excision repair in rat and human fibroblasts
AU - Vijg, J.
AU - Mullaart, E.
AU - van der Schans, G. P.
AU - Lohman, P. H.M.
AU - Knook, D. L.
PY - 1984
Y1 - 1984
N2 - To obtain more information on the well-documented low excision-repair capacity of rodent cells in comparison with human cells, we have studied this form of DNA repair in UV-irradiated human and rat skin fibroblasts. For this purpose, we have determined (i) unscheduled DNA synthesis (UDS), using autoradiography, (ii) the number and size of repaired sites with the bromodeoxyuridine (BrdU) photolysis assay and (iii) the removal of Micrococcus luteus UV-endonuclease susceptible sites (ESS). We found rat cells to be quite capable of performing DNA-repair synthesis, as demonstrated by both UDS and BrdU photolysis, whereas they almost completely lacked the capacity to remove pyrimidine dimers, as indicated by the persistence of ESS. This discrepancy will be discussed in terms of the types of mechanisms by which mammalian cells may recognize and remove UV-induced photoproducts.
AB - To obtain more information on the well-documented low excision-repair capacity of rodent cells in comparison with human cells, we have studied this form of DNA repair in UV-irradiated human and rat skin fibroblasts. For this purpose, we have determined (i) unscheduled DNA synthesis (UDS), using autoradiography, (ii) the number and size of repaired sites with the bromodeoxyuridine (BrdU) photolysis assay and (iii) the removal of Micrococcus luteus UV-endonuclease susceptible sites (ESS). We found rat cells to be quite capable of performing DNA-repair synthesis, as demonstrated by both UDS and BrdU photolysis, whereas they almost completely lacked the capacity to remove pyrimidine dimers, as indicated by the persistence of ESS. This discrepancy will be discussed in terms of the types of mechanisms by which mammalian cells may recognize and remove UV-induced photoproducts.
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U2 - 10.1016/0167-8817(84)90007-5
DO - 10.1016/0167-8817(84)90007-5
M3 - Article
C2 - 6493261
AN - SCOPUS:0021225015
SN - 0167-8817
VL - 132
SP - 129
EP - 138
JO - Mutation Research DNA Repair Reports
JF - Mutation Research DNA Repair Reports
IS - 3-4
ER -