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タンパク質メチル化修飾に基づく除菌後胃癌発生危険因子の同定と発生メカニズムの解明

Research Project

Project/Area Number 22K16024
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionOita University

Principal Investigator

平下 有香  大分大学, 医学部, 病院特任助教 (70771955)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2024: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsタンパク質メチル化 / オルガノイド / 化生 / 除菌後胃癌 / 発癌リスク / ヘリコバクターピロリ
Outline of Research at the Start

H. pylori 除菌治療が普及し胃癌予防の効果が期待される一方、除菌後胃癌症例の報告も増え、除菌後胃粘膜の発癌リスクが残っていることが明らかとなった。申請者はこれまでに、除菌後胃癌症例の粘膜深部および化生上皮に特異的に一部のタンパク質メチル化修飾が検出され発癌リスクと相関を認めることを見出した。本研究では、タンパク質メチル基転移酵素とそれにより引き起こされるタンパク質メチル化修飾が、除菌後胃粘膜における化生変化や発癌にどのように関与するかを明らかにすることで、除菌後胃癌のリスク因子の同定と発生メカニズムの解明を目指す。

Outline of Annual Research Achievements

H.pylori 除菌治療が普及し胃癌予防の効果が期待される一方、除菌後胃癌症例の報告も増え、除菌後胃粘膜の発癌リスクが残っていることが明らかとなった。除菌症例が増加している本邦では、どのような症例において除菌後胃癌の発生リスクが高いのか、除菌後胃粘膜に特化したリスク因子の同定は重要な課題であるといえる。申請者はこれまでに、除菌後胃癌症例の粘膜深部および化生上皮に特異的にeEF1Aタンパク質メチル化修飾が検出され発癌リスクと相関を認めることを見出した。
本研究では、タンパク質メチル基転移酵素とそれにより引き起こされるタンパク質メチル化修飾が、H.pylori除菌後胃粘膜における化生変化や発癌にどのように関与するかを網羅的に解析をおこない、H.pylori除菌後胃癌のリスク因子の同定と発生メカニズムの解明に取り組んでいる。
2022年度はH.pylori未感染、除菌治療後(胃癌未発症)、除菌後胃癌症例より採取した組織を用いた遺伝子発現アレイを行った。しかし有意なメチル基転移酵素やシグナル経路の同定・抽出には至らなかった。2023年度では症例数を増やして発現アレイ解析を行うことで、統計学的に有意なシグナル伝達経路の特定に至った。これらのシグナル伝達経路の活性に関わるメチル基転移酵素を抽出し、解析の対象とする方針とした。2024年では胃粘膜より採取した胃底腺組織及び幽門腺組織よりそれぞれ胃粘膜オルガノイドの樹立を行い、抽出した因子が胃粘膜の化生や修復、そして発癌にどのように関わっているのか機能解析を行い、除菌後胃癌発生のメカニズムの解明につなげてゆく。

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

2023年度までに除菌後胃癌や化生発生に関わる因子の抽出まではできており、胃粘膜オルガノイドの樹立も成功しているものの、特にRT-PCRで検出される分化マーカーのバラつきが大きく条件の見直しが必要である。

Strategy for Future Research Activity

2024年度では症例数を増やし、また細胞数や培養液や日数など検討し、ばらつきの少ない条件設定を定めた上で機能解析を進めてゆく必要がある。

Report

(2 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (16 results)

All 2023 2022

All Journal Article (14 results) (of which Peer Reviewed: 12 results,  Open Access: 8 results) Presentation (2 results)

  • [Journal Article] Differences in clinical features and morphology between differentiated and undifferentiated gastric cancer after Helicobacter pylori eradication2023

    • Author(s)
      Kodama M, Mizukami K, Hirashita Y, Okimoto T, Wada Y, Fukuda M, Ozaka S, Kudo Y, Ito K, Ogawa R, Okamoto K, Fukuda K, Murakami K
    • Journal Title

      PLos One

      Volume: 18 Issue: 3 Pages: 0282341-0282341

    • DOI

      10.1371/journal.pone.0282341

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of clusterin expression in the refractory response of pancreatic cancer cells to a MEK inhibitor.2023

    • Author(s)
      Amada K, Hijiya N, Ikarimoto S, Yanagihara K, Hanada T, Hidano S, Kurogi S, Tsukamoto Y, Nakada C, Kinoshita K, Hirashita Y, Uchida T, Shin T, Yada K, Hirashita T, Kobayashi T, Murakami K, Inomata M, Shirao K, Aoki M, Takekawa M, Moriyama M.
    • Journal Title

      Cancer Sci.

      Volume: 114 Issue: 5 Pages: 2189-2202

    • DOI

      10.1111/cas.15735

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficient Establishment of Bile-Derived Organoids From Patients With Biliary Cancer.2023

    • Author(s)
      Kinoshita K, Tsukamoto Y, Hirashita Y, Fuchino T, Kurogi S, Uchida T, Nakada C, Matsumoto T, Okamoto K, Motomura M, Fukuchi S, Sagami R, Nagai T, Gotoh Y, Fukuda K, Ogawa R, Mizukami K, Okimoto T, Kodama M, Murakami K, Moriyama M, Hijiya N.
    • Journal Title

      Lab Invest.

      Volume: 103 Issue: 6 Pages: 100105-100105

    • DOI

      10.1016/j.labinv.2023.100105

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of the improvement in gastric mucosal tissue after Helicobacter pylori eradication between young and elderly people2023

    • Author(s)
      Mizukami Kazuhiro、Kodama Masaaki、Fukuda Masahide、Hirashita Yuka、Tsutsumi Koshiro、Fukuda Kensuke、Ogawa Ryo、Okamoto Kazuhisa、Okimoto Tadayoshi、Murakami Kazunari
    • Journal Title

      Arab Journal of Gastroenterology

      Volume: 24 Issue: 2 Pages: 98-103

    • DOI

      10.1016/j.ajg.2023.01.005

    • Related Report
      2023 Research-status Report
  • [Journal Article] Glucose metabolic upregulation via phosphorylation of S6 ribosomal protein affects tumor progression in distal cholangiocarcinoma2023

    • Author(s)
      Fujinaga Atsuro、Hirashita Teijiro、Hirashita Yuka、Sakai Kumiko、Kawamura Masahiro、Masuda Takashi、Endo Yuichi、Ohta Masayuki、Murakami Kazunari、Inomata Masafumi
    • Journal Title

      BMC Gastroenterology

      Volume: 23 Issue: 1 Pages: 157-157

    • DOI

      10.1186/s12876-023-02815-2

    • Related Report
      2023 Research-status Report
  • [Journal Article] Tocilizumab-induced mucosal injury in the terminal ileum mimicking intestinal Behcet’s disease: A case report2023

    • Author(s)
      Ozaka Sotaro、Fukuda Masahide、Takahashi Haruhiko、Tsutsumi Koshiro、Iwao Masao、Hirashita Yuka、Fukuda Kensuke、Okamoto Kazuhisa、Arakawa Mie、Ogawa Ryo、Endo Mizuki、Mizukami Kazuhiro、Kamiyama Naganori、Kobayashi Takashi、Kodama Masaaki、Murakami Kazunari
    • Journal Title

      Medicine

      Volume: 102 Issue: 25 Pages: e34118-e34118

    • DOI

      10.1097/md.0000000000034118

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Patient-Derived Ex Vivo Cultures and Endpoint Assays with Surrogate Biomarkers in Functional Testing for Prediction of Therapeutic Response2023

    • Author(s)
      Tsukamoto Yoshiyuki、Hirashita Yuka、Shibata Tomotaka、Fumoto Shoichi、Kurogi Shusaku、Nakada Chisato、Kinoshita Keisuke、Fuchino Takafumi、Murakami Kazunari、Inomata Masafumi、Moriyama Masatsugu、Hijiya Naoki
    • Journal Title

      Cancers

      Volume: 15 Issue: 16 Pages: 4104-4104

    • DOI

      10.3390/cancers15164104

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association of immune‐related expression profile with sensitivity to chemotherapy in esophageal squamous cell carcinoma2023

    • Author(s)
      Tsukamoto Yoshiyuki、Kurogi Shusaku、Fujishima Hajime、Shibata Tomotaka、Fumoto Shoichi、Nishiki Kohei、Suzuki Kosuke、Etoh Tsuyoshi、Shiraishi Norio、Fuchino Takafumi、Hirashita Yuka、Nakada Chisato、Uchida Tomohisa、Inomata Masafumi、Moriyama Masatsugu、Hijiya Naoki
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 11 Pages: 4459-4474

    • DOI

      10.1111/cas.15942

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overexpression of VSNL1 Enhances Cell Proliferation in Colorectal Carcinogenesis2023

    • Author(s)
      Aiba Takayuki、Hijiya Naoki、Akagi Tomonori、Tsukamoto Yoshiyuki、Hirashita Yuka、Kinoshita Keisuke、Uchida Tomohisa、Nakada Chisato、Kurogi Shusaku、Ueda Yoshitake、Shiroshita Hidefumi、Shiraishi Norio、Murakami Kazunari、Inomata Masafumi、Moriyama Masatsugu
    • Journal Title

      Pathobiology

      Volume: 91 Issue: 2 Pages: 121-131

    • DOI

      10.1159/000533877

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of long-term serological and histological changes after eradication of <i>Helicobacter pylori</i>2022

    • Author(s)
      Fukuda Kensuke、Kodama Masaaki、Mizukami Kazuhiro、Okamoto Kazuhisa、Ogawa Ryo、Hirashita Yuka、Fukuda Masahide、Togo Kazumi、Matsunari Osamu、Okimoto Tadayoshi、Murakami Kazunari
    • Journal Title

      Journal of Clinical Biochemistry and Nutrition

      Volume: 71 Issue: 2 Pages: 151-157

    • DOI

      10.3164/jcbn.21-164

    • ISSN
      0912-0009, 1880-5086
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Changes of Short-Chain Fatty Acids and Their Receptors in an Obese Rat Model After Sleeve Gastrectomy2022

    • Author(s)
      Fujinaga Atsuro、Ohta Masayuki、Endo Yuichi、Nakanuma Hiroaki、Kawamura Masahiro、Hirashita Yuka、Kawasaki Takahide、Masuda Takashi、Hirashita Teijiro、Gotoh Koro、Inomata Masafumi
    • Journal Title

      Obesity Surgery

      Volume: 32 Issue: 8 Pages: 2649-2657

    • DOI

      10.1007/s11695-022-06130-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced phosphorylation of c-Jun by cisplatin treatment as a potential predictive biomarker for cisplatin response in combination with patient-derived tumor organoids.2022

    • Author(s)
      Tsukamoto Y, Kurogi S, Shibata T, Suzuki K, Hirashita Y, Fumoto S, Yano S, Yanagihara K, Nakada C, Mieno F, Kinoshita K, Fuchino T, Mizukami K, Ueda Y, Etoh T, Uchida T, Hanada T, Takekawa M, Daa T, Shirao K, Hironaka S, Murakami K, Inomata M, Hijiya N, Moriyama M.
    • Journal Title

      Lab Invest.

      Volume: 102 (12) Issue: 12 Pages: 1355-1366

    • DOI

      10.1038/s41374-022-00827-2

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Use of a novel endoscopic overtube with bilateral tool channels for endoscopic resection of experimental lesions and repair of intestinal defects in the right colon: preclinical trial2022

    • Author(s)
      Urakawa Shinya、Hirashita Teijiro、Hirashita Yuka、Matsuo Kentaro、Lowenfeld Lea、Milsom Jeffrey W.
    • Journal Title

      Surgical Endoscopy

      Volume: 37 Issue: 2 Pages: 1593-1600

    • DOI

      10.1007/s00464-022-09637-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Potential association of eEF1A dimethylation at lysine 55 in the basal area of Helicobacter pylori-eradicated gastric mucosa with the risk of gastric cancer: a retrospective observational study2022

    • Author(s)
      Hirashita Yuka、Fukuda Masahide、Kodama Masaaki、Tsukamoto Yoshiyuki、Okimoto Tadayoshi、Mizukami Kazuhiro、Kawahara Yoshinari、Wada Yasuhiro、Ozaka Sotaro、Togo Kazumi、Kinoshita Keisuke、Fuchino Takafumi、Fukuda Kensuke、Okamoto Kazuhisa、Ogawa Ryo、Matsunari Osamu、Honda Koichi、Murakami Kazunari
    • Journal Title

      BMC Gastroenterology

      Volume: 22 Issue: 1 Pages: 490-490

    • DOI

      10.1186/s12876-022-02521-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] H.pylori除菌後胃粘膜におけるジメチル化eEF1A蓄積の意義の検討2023

    • Author(s)
      平下有香
    • Organizer
      第29回日本ヘリコバクター学会学術集会
    • Related Report
      2023 Research-status Report
  • [Presentation] H. pylori除菌治療による胃粘膜S6タンパクリン酸化変化とその意義についての検討2022

    • Author(s)
      平下 有香
    • Organizer
      第30回日本消化器関連学会週間(福岡)
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2024-12-25  

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