Epigenetic regulation of DNA repair machinery in Helicobacter pylori-induced gastric carcinogenesis.

Abstract:

:Although thousands of DNA damaging events occur in each cell every day, efficient DNA repair pathways have evolved to counteract them. The DNA repair machinery plays a key role in maintaining genomic stability by avoiding the maintenance of mutations. The DNA repair enzymes continuously monitor the chromosomes to correct any damage that is caused by exogenous and endogenous mutagens. If DNA damage in proliferating cells is not repaired because of an inadequate expression of DNA repair genes, it might increase the risk of cancer. In addition to mutations, which can be either inherited or somatically acquired, epigenetic silencing of DNA repair genes has been associated with carcinogenesis. Gastric cancer represents the second highest cause of cancer mortality worldwide. The disease develops from the accumulation of several genetic and epigenetic changes during the lifetime. Among the risk factors, Helicobacter pylori (H. pylori) infection is considered the main driving factor to gastric cancer development. Thus, in this review, we summarize the current knowledge of the role of H. pylori infection on the epigenetic regulation of DNA repair machinery in gastric carcinogenesis.

journal_name

World J Gastroenterol

authors

Santos JC,Ribeiro ML

doi

10.3748/wjg.v21.i30.9021

subject

Has Abstract

pub_date

2015-08-14 00:00:00

pages

9021-37

issue

30

eissn

1007-9327

issn

2219-2840

journal_volume

21

pub_type

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