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Carcinogenesis in Mouse Stomach by Simultaneous Activation of the Wnt Signaling and Prostaglandin E2 Pathway
http://hdl.handle.net/2297/2853
http://hdl.handle.net/2297/28537be5f175-287f-4786-a2dd-028e568e1c57
| 名前 / ファイル | ライセンス | アクション |
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CA-PR-OOSHIMA-H-02.pdf (765.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-10-05 | |||||
| タイトル | ||||||
| タイトル | Carcinogenesis in Mouse Stomach by Simultaneous Activation of the Wnt Signaling and Prostaglandin E2 Pathway | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Oshima, Hiroko
× Oshima, Hiroko× Matsunaga, Akihiro× Fujimura, Takashi× Tsukamoto, Tetsuya× Taketo, Makoto Mark× Oshima, Masanobu |
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| 提供者所属 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 金沢大学がん研究所附属がん幹細胞研究センター | |||||
| 書誌情報 |
Gastroenterology 巻 131, 号 4, p. 1086-1095, 発行日 2006-01-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0016-5085 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1053/j.gastro.2006.07.014 | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Background & Aims: Accumulating evidence indicates that prostaglandin E2 (PGE2), a downstream product of cyclooxygenase 2 (COX-2), plays a key role in gastric tumorigenesis. The Wnt pathway is also suggested to play a causal role in gastric carcinogenesis. However, the molecular mechanism remains poorly understood of how the Wnt and PGE2 pathways contribute to gastric tumorigenesis. To investigate the role of Wnt and PGE2 in gastric cancer, we have generated transgenic mice that activate both pathways and examined their phenotypes. Methods: We constructed K19-Wnt1 transgenic mice expressing Wnt1 in the gastric mucosa using the keratin 19 promoter. We then crossed K19-Wnt1 mice with another transgenic line, K19-C2mE, to obtain K19-Wnt1/C2mE compound transgenic mice. The K19-C2mE mice express COX-2 and microsomal prostaglandin E synthase-1 (mPGES-1) in the stomach, showing an increased gastric PGE2 level. We examined the gastric phenotypes of both K19-Wnt1 and K19-Wnt1/C2mE mice. Results: K19-Wnt1 mice had a significant suppression of epithelial differentiation and developed small preneoplastic lesions consisting of undifferentiated epithelial cells with macrophage accumulation. Importantly, additional expression of COX-2 and mPGES-1 converted the preneoplastic lesions in the K19-Wnt1 mice into dysplastic gastric tumors by 20 weeks of age. Notably, we found mucous cell metaplasia in the glandular stomach of the K19-Wnt1/C2mE mice as early as 5 weeks of age, before the dysplastic tumor development. Conclusions: Wnt signaling keeps the gastric progenitor cells undifferentiated. Simultaneous activation of both Wnt and PGE2 pathways causes dysplastic gastric tumors through the metaplasia-carcinoma sequence. © 2006 American Gastroenterological Association (AGA) Institute. | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
