A comparison of the gene expression profiles of CRL-1807 colonocytes exposed to endogenous AAPH-generated peroxides and exogenous peroxides from heated oil

Eugene P. Halligan, Damon Anthony Lowes, Nalini Mistry, Rosamund Dove, Marcus Cooke, Mark Evans, Joseph Lunec

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3 Citations (Scopus)


Oxidation of PUFAs in the diet has the potential to be genotoxic and hence carcinogenic. Such carcinogenic processes originate within stem cells of the colon. These cells appear to be predisposed to the carcinogenic process. In colon cells (CRL-1807) exposed to chemical reactions simulating exogenous and endogenous peroxidation reactions, we have observed that undifferentiated cells could mount an effective recombinational repair/TCR response to an endogenous peroxidative DNA damage insult, but not to an external exogenous peroxidative insult as one would encounter from a dietary source. This may suggest that defects in such specific DNA repair may play a role in tumour development in undifferentiated colonocytes exposed to a diet-derived lipid peroxides.

Original languageEnglish
Pages (from-to)86-90
Number of pages5
JournalRedox Report Communications in Free Radical Research
Issue number1-2
Publication statusPublished - Feb 2007


  • colonocytes
  • DNA repair
  • dietary lipid peroxides
  • colon cancer
  • colorectal adenocarcinoma
  • cells
  • cancer

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