Details

Autor(en) / Beteiligte

• Ohnuma, Shinobu
• Yang, Wang Dang
• Suzuki, Hideyuki
• Kanehara, Keigo
• Karasawa, Hideaki
• Kohyama, Atsushi
• Watanabe, Kazuhiro
• Miura, Koh
• Kamei, Takashi
• Naitoh, Takeshi
• Unno, Michiaki

Titel

Abstract 352: The effect of anti-TNF-alpha Ab in AOM/DSS-induced colitic cancer mouse model

Ist Teil von

• Cancer research (Chicago, Ill.), 2019-07, Vol.79 (13_Supplement), p.352-352

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Abstract Aim: To reveal whether anti TNF-α antibody (Ab) induces colon carcinogenesis or not in colitic cancer models. Methods: The effects of TNF-α and anti TNF-α Ab were analyzed with cell-proliferation, migration, and invasion assays in human colon cancer cell lines, in vitro. Then, the effects of anti TNF-α Ab, infliximab (10 mg/kg, i.p.) were investigated with drug-induced colitis-associated colon cancer model by azoxymethane (AOM: 10 mg/kg, i.p.)/dextran sodium sulfate (DSS: 2.5%, oral) in vivo. Results: 50 ng/ml of TNF-α inhibited cell proliferation, migration, and invasion of HCT8 and COLO205, however, anti TNF-α Ab offset the TNF-α mediated-inhibition in vitro. Infliximab significantly attenuated the development of colon cancers in AOM/DSS treated mice. The microarray analyses revealed that mast cell related genes (mast cell protease1, mast cell protease 2, chymase 1, etc) were down-regulated in cancer tissues of the infliximab-treated AOM/DSS mice. The results of microarray were validated by real-time RT-PCR. Finally, the number of mast cells were also reduced in those mice. Conclusions: Mast cell may have a pivotal role in the development of colitic cancer. Anti TNF-α Ab may prevent colitic cancer in the patients with inflammatory bowel diseases. Citation Format: Shinobu Ohnuma, Wang Dang Yang, Hideyuki Suzuki, Keigo Kanehara, Hideaki Karasawa, Atsushi Kohyama, Kazuhiro Watanabe, Koh Miura, Takashi Kamei, Takeshi Naitoh, Michiaki Unno. The effect of anti-TNF-alpha Ab in AOM/DSS-induced colitic cancer mouse model [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 352.