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Damage of DNA and proteins by major lipid peroxidation products in genome stability

Winczura, Alicja and Zdżalik, Daria and Tudek, Barbara (2012) Damage of DNA and proteins by major lipid peroxidation products in genome stability. Free Radical Research, 46 (4). pp. 442-459.



Oxidative stress and lipid peroxidation (LPO) accompanying infections and chronic inflammation may induce several human cancers. LPO products are characterized by carbohydrate chains of different length, reactive aldehyde groups and double bonds, which make these molecules reactive to nucleic acids, proteins and cellular thiols. LPO-derived adducts to DNA bases form etheno-type and propano-type exocyclic rings, which have profound mutagenic potential, and are elevated in several cancer-prone diseases. Adducts of long chain LPO products to DNA bases inhibits transcription. Elimination from DNA of LPO-induced lesions is executed by several repair systems: base excision repair (BER), direct reversal by AlkB family proteins, nucleotide excision repair (NER) and recombination. Modifications of proteins with LPO products may regulate cellular processes like apoptosis, cell signaling and senescence. This review summarizes consequences of LPO products presence in cell, particularly 4-hydroxy-2-nonenal in terms of genomic stability.

Item Type:Article
Subjects:Q Science > Q Science (General)
Divisions:Department of Molecular Biology
ID Code:500
Deposited By: Prof. Barbara Tudek
Deposited On:14 Apr 2014 12:10
Last Modified:14 Apr 2014 12:10

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