DNA damage by the glycation products of glyceraldehyde 3-phosphate and lysine.
In order to evaluate whether base modifications, apurinic/apyrimidinic site formation, strand breaks, or a combination of these lesions results from the interaction of glycation products with DNA, plasmid DNA was first reacted with these products, and then subjected to digestion with endonuclease III and endonuclease IV of Escherichia coli. Analysis of the differential effects of digestions with these enzymes by electrophoresis on agarose gels demonstrated that reactive glycation products produce both base modification and apurinic/apyrimidinic sites in DNA, in addition to the strand breaks observed after incubation with glycation products alone. These types of DNA damage may occur in specific diabetic cells where elevated levels of glycating sugars are associated with pathologic dysfunction.
Mullokandov
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EA
Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, NY 10461.
Franklin
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WA
Brownlee
M
M
D004249:DNA Damage; D043603:DNA-(Apurinic or Apyrimidinic Site) Lyase; D043224:Deoxyribonuclease (Pyrimidine Dimer); D043223:Deoxyribonuclease IV (Phage T4-Induced); D004706:Endodeoxyribonucleases / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D029968:Escherichia coli Proteins; D017127:Glycation End Products, Advanced; D005986:Glyceraldehyde 3-Phosphate; D008239:Lysine; D010957:Plasmids
D029968:Escherichia coli Proteins; D017127:Glycation End Products, Advanced; D005986:Glyceraldehyde 3-Phosphate; D004706:Endodeoxyribonucleases; D043223:Deoxyribonuclease IV (Phage T4-Induced); C468972:endonuclease IV, E coli; D043224:Deoxyribonuclease (Pyrimidine Dimer); C106403:NTH protein, E coli; D043603:DNA-(Apurinic or Apyrimidinic Site) Lyase; D008239:Lysine