2016 Fiscal Year Annual Research Report
Hypotonic stimulation enhances cellular uptake and cytocidal effect of anticancer drug in gastric cancer cells
Project/Area Number |
26461988
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Research Institution | Kyoto Prefectural University of Medicine |
Principal Investigator |
塩崎 敦 京都府立医科大学, 医学(系)研究科(研究院), 助教 (40568086)
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Co-Investigator(Kenkyū-buntansha) |
大辻 英吾 京都府立医科大学, 医学(系)研究科(研究院), 教授 (20244600)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Keywords | 胃癌 / 浸透圧 / 抗癌剤 |
Outline of Annual Research Achievements |
胃癌細胞株を用い、低浸透圧刺激による細胞内PTX取り込み・抗腫瘍作用への増強効果をin vitroで解析した。接着状態での取り込みはプレートリーダーで、浮遊状態での解析は、フローサイトメトリーで行った。両状態で、胃癌細胞株を各種低浸透圧環境下に、Oregon greenで蛍光標識されたPTXで処理したところ、低浸透圧レベルに依存して、細胞内PTX濃度が上昇することを確認した。浸透圧の細胞増殖への影響は浮遊状態で特に顕著であり、低浸透圧刺激+PTX群の細胞増殖が最も抑制された。PTXの膜輸送体の発現を解析したが、浸透圧変化に伴う遺伝子発現変化は認められず、脂質二重層を介する取り込み増強効果が示唆された。 また、ヌードマウス腹膜播種モデルを用い、播種結節へのPTX取り込みをMVX10 MacroView ・蛍光顕微鏡で解析した。浸透圧の低下に伴い、蛍光標識されたPTXの播種結節への取り込みが結節辺縁より上昇することが確認できた。 一方で、胃癌細胞株における低浸透圧殺細胞効果が、K+チャンネル阻害剤により調節性容積減少(RVD)の抑制を介して増強されることを明らかにした。また、癌細胞への温熱刺激における、水輸送体のAutophagyを介する制御機序の解明(Int J Oncol. 2017)や、水輸送体の制御を介してRVDを抑制し、低浸透圧殺細胞効果が増強されることも示した(J Cancer. 2016)。同時に、消化器癌におけるAE1 (Oncotarget. 2017)、NHE1(Oncotarget. 2017)、TRPM7 (Anticancer Res. 2017)等の細胞生理学的因子や、アポトーシス阻害因子(Dig Dis Sci. 2017)の機能解析を行った。更に、癌幹細胞に特異的に発現するイオンチャネルを同定した(J Gastroenterol. 2017)。
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Research Products
(37 results)
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[Journal Article] Esophageal cancer stem cells are suppressed by tranilast, a TRPV2 channel inhibitor.2017
Author(s)
Shiozaki A, Kudou M, Ichikawa D, Fujiwara H, Shimizu H, Ishimoto T, Arita T, Kosuga T, Konishi H, Komatsu S, Okamoto K, Marunaka Y, Otsuji E.
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Journal Title
J Gastroenterol
Volume: 印刷中
Pages: 印刷中
DOI
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Expression and role of anion exchanger 1 in esophageal squamous cell carcinoma.2017
Author(s)
Shiozaki A, Kudou M, Ichikawa D, Shimizu H, Arita T, Kosuga T, Konishi H, Komatsu S, Fujiwara H, Okamoto K, Kishimoto M, Marunaka Y, Otsuji E.
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Journal Title
Oncotarget
Volume: 8
Pages: 17921-17935
DOI
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Heat shock exerts anticancer effects on liver cancer via autophagic degradation of aquaporin 5.2017
Author(s)
Kudou M, Shiozaki A, Kosuga T, Shimizu H, Ichikawa D, Konishi H, Morimura R, Komatsu S, Ikoma H, Fujiwara H, Okamoto K, Marunaka Y, Otsuji E.
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Journal Title
Int J Oncol
Volume: 50
Pages: 1857-1867
DOI
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Transient Receptor Potential Melastatin 7 as an Independent Prognostic Factor in Human Esophageal Squamous Cell Carcinoma.2017
Author(s)
Nakashima S, Shiozaki A, Ichikawa D, Hikami S, Kosuga T, Konishi H, Komatsu S, Fujiwara H, Okamoto K, Kishimoto M, Konishi E, Otsuji E.
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Journal Title
Anticancer Res
Volume: 37
Pages: 1161-1167
DOI
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Na+/H+ exchanger 1 has tumor suppressive activity and prognostic value in esophageal squamous cell carcinoma.2017
Author(s)
Ariyoshi Y, Shiozaki A, Ichikawa D, Shimizu H, Kosuga T, Konishi H, Komatsu S, Fujiwara H, Okamoto K, Kishimoto M, Marunaka Y, Otsuji E.
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Journal Title
Oncotarget
Volume: 10
Pages: 2209-2223
DOI
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Inhibition of Regulatory Volume Decrease Enhances the Cytocidal Effect of Hypotonic Shock in Hepatocellular Carcinoma.2016
Author(s)
Kudou M, Shiozaki A, Kosuga T, Ichikawa D, Konishi H, Morimura R, Komatsu S, Ikoma H, Fujiwara H, Okamoto K, Hosogi S, Nakahari T, Marunaka Y, Otsuji E.
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Journal Title
J Cancer
Volume: 7
Pages: 1524-1533
DOI
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Roles of anion exchanger 1 in esophageal squamous cell in carcinoma.2016
Author(s)
Shiozaki A, Kudou M, Ichikawa D, Shimizu H, Kosuga T, Konishi H, Komatsu S, Okamoto K, Fujiwara H, Yamagishi H, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] AE2, Anion exchanger 2, as an independent prognostic factor in human esophageal squamous cell carcinoma.2016
Author(s)
Kobayashi T, Shiozaki A, Ichikawa D, Hikami S, Kosuga T, Konishi H, Komatsu S,Fujiwara H, Okamoto K, Kishimoto M, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] The efficacy and clinical safety of additional surgical resection after endoscopic submucosal dissection for esophageal cancer.2016
Author(s)
Kudo M, Shiozaki A, Fujiwara H, Konishi H, Arita T, Kosuga T, Morimura R, Murayama Y, Komatsu S, Kuriu Y, Ikoma H, Nakanishi M, Ichikawa D, Okamoto K, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] Prognostic significance of the sodium iodide symporter expression in human esophageal squamous cell carcinoma.2016
Author(s)
Yamazato Y, Shiozaki A, Ichikawa D, Ariyoshi Y, Iitaka D, Kosuga T, Konishi H, Fujiwara H, Okamoto K, Kishimoto M, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
Kyoto
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] Transient receptor potential melastatin 7 channel as an independent prognostic factor in human esophageal squamous cell carcinoma.2016
Author(s)
Nakashima S, Shiozaki A, Ichikawa D, Hikami S, Kosuga T, Konishi H, Komatsu S, Fujiwara H, Okamoto K, Yamagishi H, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] Heat shock induces anticancer effects via regulation of aquaporin5.2016
Author(s)
Kosuga T, Shiozaki A, Kudou M, Shimizu H, Ichikawa D, Komatsu S, Konishi H, Arita T, Morimura R, Ikoma H, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] Expression and role of sodium iodide symporter in gastric cancer.2016
Author(s)
Ariyoshi Y, Shiozaki A, Ichikawa D, Kosuga T, Konishi H, Komatsu S, Fujiwara H, Okamoto K, Kishimoto M, Marunaka Y, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] TRPV2, a potential novel target for anti-cancer therapy against esophageal cancer stem cells.2016
Author(s)
Kudou M, Shiozaki A, Ichikawa D, Shimizu H, Arita T, Kosuga T, Konishi H, Morimura R, Murayama Y, Komatsu S, Ikoma H, Kuiru Y, Nakanishi M, Fujiwara H, Okamoto K, Yamagishi H, Otsuji E.
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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[Presentation] Function of Na+/H+ exchanger 1 and its clinical significance in esophageal squamous cell carcinoma.2016
Author(s)
Ariyoshi Y, Shiozaki A, Ichikawa D, Arita T, Kosuga T, Konishi H, Morimura R, Murayama Y, Komatsu S, Ikoma H, Kuriu Y, Nakanishi M, Fujiwara H, Okamoto K, Kishimoto M, Marunaka Y, Yamagishi H, Otsuji E
Organizer
40th World Congress of the International College of Surgeons
Place of Presentation
国立京都国際会館(京都市)
Year and Date
2016-10-23 – 2016-10-26
Int'l Joint Research
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