Abstract
Cyclooxigenase-2 (COX-2) is an inducible enzyme for prostaglandin biosynthesis which plays a key role in inflammatory responses. The expression of COX-2 is induced in most cancer tissues, and plays a key role in tumourigenesis through the production of inflammatory mediator, prostaglandin E2 (PGE2). We investigated the role of COX-2/PGE2 pathway-associated inflammation in gastric tumourigenesis using Gan mice, which develop gastric tumours through the activation of both the COX-2/PGE2 pathway and oncogenic Wnt signalling. Notably, the induction of the COX-2/PGE2 pathway induces chronic inflammation in the stomach, which leads to the generation of the inflammatory tumour microenvironment. We found that macrophage-derived tumour necrosis factor-α (TNF-α) hyperactivates the Wnt activation level of the adjacent tumour epithelial cells. Wnt signalling is important for the maintenance of stemness in gastrointestinal stem cells, and activation of Wnt signalling causes tumour formation. Moreover, TNF-α induces the expression of Noxo1 in tumour cells (a component of the NADPH oxidase 1 [NOX1] complex), resulting in the activation of reactive oxygen species (ROS) signalling. NOX1-derived ROS have been shown to be important for cancer stem cell ability. Accordingly, in tumour tissues, the COX-2/PGE2 pathway promotes gastric tumourigenesis through the generation of the inflammatory microenvironment; where TNF-α activates the NOX1 complex in tumour cells, resulting in the maintenance of stemness. Thus the inhibition of the inflammatory pathways from COX-2/PGE2 to NOX1/ROS will be an effective strategy for preventing gastric cancer development.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Adachi Y, Shibai Y, Mitsushita J et al (2008) Oncogenic Ras upregulates NADPH oxidase 1 gene expression through MEK-ERK-dependent phosphorylation of GATA-6. Oncogene 27:4921–4932
Barker N, Huch M, Kujala P et al (2011) Lgr5+ve stem cells drive self-renewal in the stomach and build long-lived gastric units in vitro. Cell Stem Cell 6:25–36
Block K, Gorin Y (2012) Aiding and abetting roles of NOX oxidases in cellular transformation. Nat Rev Cancer 12:627–637
Cancer Genome Atlas Network (2014) Comprehensive molecular characterization of gastric adenocarcinoma. Nature 513:202–209
Cooks T, Pateras I, Tarcic O et al (2013) Mutant p53 prolongs NF-kB activation and promotes chronic inflammation and inflammation-associated colorectal cancer. Nat Cell Biol 23:634–646
Fletcher BS, Kujubu DA, Perrin DM et al (1992) Structure of the mitogen-inducible TIS10 gene and demonstration that the TIS10-encoded protein is a functional prostaglandin G/H synthase. J Biol Chem 267:4338–4344
Gregorieff A, Clevers H (2005) Wnt signaling in the intestinal epithelium: from endoderm to cancer. Genes Dev 19:877–890
Greten FR, Eckmann L, Greten TF et al (2004) IKKβ links inflammation and tumorigenesis in a mouse model of colitis-associated cancer. Cell 118:285–296
Grivennikov SI, Greten FR, Karin M (2010) Immunity, inflammation and cancer. Cell 140:883–899
Hanahan D, Weinberg RA (2011) Hallmarks of cancer: the next generation. Cell 144:646–674
Itzkovitz S, Lyubimova A, Blat IC et al (2011) Single-molecule transcript counting of stem-cell markers in the mouse intestine. Nat Cell Biol 14:106–114
Maeda Y, Echizen K, Oshima H et al (2016) Myeloid differentiation factor 88 signaling in bone marrow-derived cells promotes gastric tumorigenesis by generation of inflammatory microenvironment. Cancer Prev Res 9:253–263
McCarthy CJ, Crofford LJ, Greenson J et al (1999) Cyclooxygenase-2 expression in gastric antral mucosa before and after eradiation of Helicobacter pylori infection. Am J Gastroenterol 94:1218–1223
Myant KB, Cammareri P, McGhee EJ et al (2013) ROS production and NF-kB activation triggered by RAC1 facilitate WNT-driven intestinal stem cell proliferation and colorectal cancer initiation. Cell Stem Cell 12:761–773
Nakanishi M, Montrose DC, Clark P et al (2008) Genetic deletion of mPGES-1 suppresses intestinal tumorigenesis. Cancer Res 68:3251–3259
Oguma K, Oshima H, Aoki M et al (2008) Activated macrophages promote Wnt signaling through tumor necrosis factor-a in gastric tumor cell. EMBO J 27:1671–1681
Oguma K, Oshima H, Oshima M (2010) Inflammation, tumor necrosis factor and Wnt promotion in gastric cancer development. Future Oncol 6:515–526
Oshima M, Taketo MM (2002) COX selectivity and animal models for colon cancer. Curr Pharm Des 8:1021–1034
Oshima M, Oshima H, Kitagawa K et al (1995) Loss of Apc heterozygosity and abnormal tissue building in nascent intestinal polyps in mice carrying a truncated Apc gene. Proc Natl Acad Sci U S A 92:4482–4486
Oshima M, Dinchuk JE, Kargman SL et al (1996) Suppression of intestinal polyposis in Apc Δ716 knockout mice by inhibition of cyclooxygenase 2 (COX-2). Cell 87:803–809
Oshima H, Oshima M, Inaba K et al (2004) Hyperplastic gastric tumors induced by activated macrophages in COX-2/mPGES-1 transgenic mice. EMBO J 23:1669–1678
Oshima H, Oshima M, Matsunaga A et al (2005) Hyperplastic gastric tumors with spasmolytic polypeptide-expressing metaplasia caused by tumor necrosis factor-α-dependent inflammation in cyclooxygenase-2/microsomal prostaglandin E synthase-1 transgenic mice. Cancer Res 65:9147–9151
Oshima H, Matsunaga A, Fujimura T et al (2006) Carcinogenesis in mouse stomach by simultaneous activation of the Wnt signaling and prostaglandin E2 pathway. Gastroenterology 131:1086–1095
Oshima H, Oguma K, Du YC et al (2009) Prostaglandin E2, Wnt and BMP in gastric tumor mouse models. Cancer Sci 100:1779–1785
Oshima H, Hioki K, Popivanova BK et al (2011) Prostaglandin E2 signaling and bacterial infection recruit tumor-promoting macrophages to mouse gastric tumors. Gastroenterology 140:596–607
Oshima H, Ishikawa T, Yoshida GJ et al (2014) TNF-α/TNFR1 signaling promotes gastric tumorigenesis through induction on NOXO1 and Gna14 in tumor cells. Oncogene 33:3820–3829
Rakoff-Nahoum S, Medzhitov R (2007) Regulation of spontaneous intestinal tumorigenesis though the adaptor protein MyD88. Science 317:124–127
Scheeren FA, Kuo AH, van Weele LJ et al (2014) A cell-intrinsic role for TLR2-MYD88 in intestinal and breast epithelia and oncogenesis. Nat Cell Biol 16:1238–1248
Schwitalla S, Fingerle AA, Cammareri P et al (2013) Intestinal tumorigenesis initiated by dedifferentiation and acquisition of stem-cell-like properties. Cell 152:25–38
Sonoshita M, Takaku K, Sasaki N et al (2001) Acceleration of intestinal polyposis through prostaglandin receptor EP2 in Apc(Delta716) knockout mice. Nat Med 7:1048–1051
Taketo MM (2006) Wnt signaling and gastrointestinal tumorigenesis in mouse models. Oncogene 25:7522–7530
Thun MJ, Namboodiri MM, Heath CW Jr et al (1991) Aspirin use and reduced risk of fatal colon cancer. N Engl J Med 325:1593–1596
Tye H, Kennedy CL, Najdovska M et al (2012) STAT3-driven upregulation of TLR2 promotes gastric tumorigenesis independent of tumor inflammation. Cancer Cell 22:466–478
Wang D, Dubois RN (2010a) Eicosanoids and cancer. Nat Rev Cancer 10:181–193
Wang D, Dubois RN (2010b) The role of COX-2 in intestinal inflammation and colorectal cancer. Oncogene 29:781–788
Weis VG, Goldenring JR (2009) Current understanding of SPEM and its standing in the preneoplastic process. Gastric Cancer 12:189–197
Zhu Z, Aref AR, Cohoon TJ et al (2014) Inhibition of KRAS-driven tumorigenicity by interruption of an autocrine cytokine circuit. Cancer Dicov 4:452–465
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer Japan
About this chapter
Cite this chapter
Oshima, H., Echizen, K., Maeda, Y., Oshima, M. (2016). The Role of Chronic Inflammation in the Promotion of Gastric Tumourigenesis. In: Miyasaka, M., Takatsu, K. (eds) Chronic Inflammation. Springer, Tokyo. https://doi.org/10.1007/978-4-431-56068-5_14
Download citation
DOI: https://doi.org/10.1007/978-4-431-56068-5_14
Published:
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-56066-1
Online ISBN: 978-4-431-56068-5
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)