Review
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastrointest Oncol. Mar 15, 2014; 6(3): 55-66
Published online Mar 15, 2014. doi: 10.4251/wjgo.v6.i3.55
Figure 3
Figure 3 Role of pro-oxidant intestinal bacteria in colorectal cancer. Enterococcus faecalis (E. faecalis) an intestinal bacteria with the unique ability to generate superoxide radicals. Intestinal microfold cells (M-cells) may transport E. faecalis from the intestinal lumen to macrophages in the subepithelial dome where macrophage cyclooxygenase-2 (COX-2) and lipid peroxidation can generate 4-hydroxynonenal (4-HNE), which promotes DNA damage/chromosomal instability to nearby epithelial cells[20].