| Epigenetic disorder mechanisms are one of the causes of cancer. The most important of
these changes is the DNA methylation, which leads to the spread of Helicobacter pylori
and inflammatory processes followed by induction of DNA methylation disorder.
Mutations and epigenetic changes are the two main agents of neoplasia.
Epithelial cells infection by H. pylori associated with activating several intracellular
pathways including: MAPK, NF‐κB, Wnt/β‐catenin, and PI3K are affects a variety of
cells and caused to an increase in the production of inflammatory cytokines, changes
in apoptosis, proliferation, differentiation, and ultimately leads to the transformation
of epithelial cells into oncogenic. The arose of free radicals impose the DNA cytosine
methylation, and NO can increase the activity of DNA methyltransferase.
H. pylori infection causes an environment that mediates inflammation and signaling
pathways that probably caused to stomach tumorigenicity. The main processes that
change by decreasing or increasing the expression of various microRNAs expressions
include immune responses, apoptosis, cell cycle, and autophagy. In this review will be
describe a probably H. pylori roles in infection and mechanisms that have contribution in
epigenetic changes in the promoter of genes |