Role of Clostridium perfringens Enterotoxin on YAP Activation in Colonic Sessile Serrated Adenoma/ Polyps with Dysplasia. 11

• 資料種別: 博士論文
• タイトル: Role of Clostridium perfringens Enterotoxin on YAP Activation in Colonic Sessile Serrated Adenoma/ Polyps with Dysplasia.
• 巻次・部編番号: 21 11
• 著者・編者: Fujiwara-Tani, Rina; Fujii, Kiyomu; Mori, Shiori; Kishi, Shingo; Sasaki, Takamitsu; Ohmori, Hitoshi; Nakashima, Chie; Kawahara, Isao; Nishiguchi, Yukiko; Mori, Takuya; Sho, Masayuki; Kondoh, Masuo; Luo, Yi; Kuniyasu, Hiroki
• 著者標目: Fujiwara-Tani, Rina; Fujii, Kiyomu; Mori, Shiori; Kishi, Shingo; Sasaki, Takamitsu; Ohmori, Hitoshi; Nakashima, Chie; Kawahara, Isao; Nishiguchi, Yukiko; Mori, Takuya; Sho, Masayuki; Kondoh, Masuo; Luo, Yi; Kuniyasu, Hiroki
• 出版事項: MDPI
• 出版年月日等: 2020-05-28; 21 11
• 出版年（W3CDTF）: 2020-05-28
• 並列タイトル等: 大腸 Sessile Serrated Adenoma/Polyps with Dysplasia における YAP 活性化に対する Clostridium perfringens のエンテロトキシンの役割
• タイトル（掲載誌）: International journal of molecular sciences
• 掲載ページ: Article No.3840-
• ISSN（掲載誌）: 14220067
• 授与機関名: 奈良県立医科大学
• 授与年月日: 2022-03-15
• 授与年月日（W3CDTF）: 2022-03-15
• 報告番号: 甲第819号
• 学位: 博士（医学）
• 博論授与番号: 甲第819号
• 本文の言語コード: eng
• 件名標目: clostridium perfringens enterotoxin; claudin-4; YAP; Hippo signal; SSA/P
• 対象利用者: 一般
• 一般注記: type:Thesis; Sessile serrated adenoma/polyp with dysplasia (SSA/P-D) is an SSA/P with cellular dysplasia and has a higher risk of progressing to colon carcinogenesis. Previously, we reported that tight junction impairment by Clostridium perfringens enterotoxin (CPE) leads to activation of the transcriptional co-activator yes-associated protein (YAP) in oral squamous cell carcinoma. Here, we investigated whether CPE activates YAP to promote the malignant progression of SSA/P. E-cadherin expression was lower in the 12 cases with SSA/P-D examined than that in normal mucosa, SSA/P, or tubular adenoma (TA). Furthermore, intracellular translocation of claudin-4 (CLDN4) and nuclear translocation of YAP were observed. The CPE gene was detected in DNA extracted from SSA/P-D lesions, but not in SSA/P or TA. Treatment of the rat intestinal epithelial cell line IEC6 with low-dose CPE resulted in intracellular translocation of CLDN4 to the cytoplasmic membrane. Cytoplasmic CLDN4 showed co-precipitation with transcriptional co-activator with PDZ-binding motif, zonula occludens (ZO)-1, large tumor suppressor, and mammalian Ste20-like. Additionally, YAP co-precipitated with ZO-2 under CPE treatment led to decreased YAP phosphorylation and nuclear translocation. YAP activation promoted increase in nuclear TEA domain family member level, expression of cyclin D1, snail, vimentin, CD44, NS and decrease in E-cadherin levels, thereby inducing stemness and epithelial-mesenchymal-transition (EMT). The Hippo complex with the incorporation of CLDN4 increased stability. Upon low-dose CPE treatment, HT29 cells with BRAFᵛ⁶⁰⁰ᴱ gene mutation showed increased growth, enhanced invasive potential, stemness, and induced EMT phenotype, whereas HCT116 cells, which carry KRASᴳ¹³ᴰ gene mutation, did not show such changes. In an examination of 10 colorectal cancers, an increase in EMT and stemness was observed in CPE (+) and BRAF mutation (+) cases. These findings suggest that C. perfringens might enhance the malignant transformation of SSA/P-D via YAP activation. Our findings further highlight the importance of controlling intestinal flora using probiotics or antibiotics.; 博士（医学）・甲第819号・令和4年3月15日; © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).; identifier:International journal of molecular sciences Vol.21 No.11 Article No.3840 (2020 May); identifier:14220067; identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/4002; identifier:International journal of molecular sciences, 21(11): Article No.3840
• 国立国会図書館永続的識別子: info:ndljp/pid/12296698; https://dl.ndl.go.jp/pid/12296698
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• 収集根拠: 博士論文（自動収集）
• 受理日（W3CDTF）: 2022-06-05T18:01:14+09:00
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 関連情報（URI）: https://doi.org/10.3390/ijms21113840
• 掲載誌（URI）: http://hdl.handle.net/10564/4002
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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