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2023 Fiscal Year Annual Research Report

Identification of alterations in non-coding RNA and development of novel therapeutic strategy for BRAF-mutated colorectal cancer

Research Project

Project/Area Number 21K07169
Research InstitutionTohoku University

Principal Investigator

高橋 雅信  東北大学, 医学系研究科, 准教授 (00447161)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsBRAF / 大腸がん / Mcl1 / miRNA
Outline of Annual Research Achievements

本研究の目的は、①BRAF変異大腸癌におけるMcl1阻害薬の治療応用、②BRAF変異大腸癌発がんにおけるmiRNA群やlncRNA群の同定と関連する標的遺伝子群を含めた新規治療標的分子の同定、であった。
申請者らは、BRAF変異大腸がん特異的に、miR-193a-3pががん抑制的に働くことをin vitroの解析にて初めて明らかにし既に報告している(Takahashi H et al., BMC Cancer 2017;17:723)。さらに申請者らは、miR-193a-3pの癌細胞内過剰発現が、BRAF阻害薬による殺細胞性効果を高めること、またその効果増強の機構に、miR-193a-3pの標的であり抗アポトーシスタンパク質の1つであるMcl1の抑制が密接に関与していることを見出した(Hiraide S et al. Cancer Sci. 2021 112:3856-3870.)。Mcl1阻害薬のBRAF阻害薬+MEK阻害薬+抗EGFR抗体への細胞増殖抑制増強効果を各種培養がん細胞株を用いてin vitro, in vivo での実験を行った。一部での細胞株では有効性を示したが、全ての細胞株では有効性を認めなかった。
また、BRAF変異大腸がんにおけるBRAF阻害薬+MEK阻害薬+抗EGFR抗体の治療効果を増強しうるMcl1以外の新規標的分子を探索するため、CRISPER-CAS9技術を用いたin vitroでの遺伝子スクリーニングの実験を行い、6つの遺伝子をその標的候補として見出した。今後、in vitro, in vivo でのproof of conceptを確立すべく、より詳細の分子解析を予定している。

  • Research Products

    (8 results)

All 2024 2023

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (1 results)

  • [Journal Article] Efficacy of adding levofloxacin to gemcitabine and nanoparticle-albumin-binding paclitaxel combination therapy in patients with advanced pancreatic cancer: study protocol for a multicenter, randomized phase 2 trial (T-CORE2201)2024

    • Author(s)
      Imai Hiroo、Sakamoto Yasuhiro、Takahashi Shin、Shibata Hiroyuki、Sato Atsushi、Otsuka Kazunori、Amagai Kenji、Takahashi Masanobu、Yamaguchi Takuhiro、Ishioka Chikashi
    • Journal Title

      BMC Cancer

      Volume: 24 Pages: 262

    • DOI

      10.1186/s12885-024-11973-9

    • Peer Reviewed / Open Access
  • [Journal Article] Management of patients with presumed germline pathogenic variant from tumor-only genomic sequencing: A retrospective analysis at a single facility2023

    • Author(s)
      Kawamura Maako、Shirota Hidekazu、Niihori Tetsuya、Komine Keigo、Takahashi Masanobu、et al.
    • Journal Title

      Journal of Human Genetics

      Volume: 68 Pages: 399~408

    • DOI

      10.1038/s10038-023-01133-5

    • Peer Reviewed
  • [Journal Article] Phase II study of biweekly cetuximab plus mFOLFOX6 or mFOLFIRI as second-line treatment for metastatic colorectal cancer and exploratory analysis of associations between DNA methylation status and the efficacy of the anti-EGFR antibody: T-CORE12012023

    • Author(s)
      Takahashi Shin、Ouchi Kota、Sakamoto Yasuhiro、Mori Takahiro、Shimodaira Hideki、Takahashi Masahiro、Ohori Hisatsugu、Kudo Chieko、Takahashi Yoshikazu、Imai Hiroo、Akiyama Shoko、Takahashi Masanobu、et al.
    • Journal Title

      Journal of Gastrointestinal Oncology

      Volume: 14 Pages: 676~691

    • DOI

      10.21037/jgo-22-862

    • Peer Reviewed / Open Access
  • [Journal Article] Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with metastatic colorectal cancer2023

    • Author(s)
      Yoshino T.、Cervantes A.、Bando H.、other 24 authors.、Takahashi M.、et al.
    • Journal Title

      ESMO Open

      Volume: 8 Pages: 101558~101558

    • DOI

      10.1016/j.esmoop.2023.101558

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] TP53 Gain-of-Function Mutation is a Poor Prognostic Factor in High-Methylated Metastatic Colorectal Cancer2023

    • Author(s)
      Wakayama Shonosuke、Ouchi Kota、Takahashi Shin、Yamada Yasuhide、Komatsu Yoshito、Shimada Ken、Yamaguchi Tatsuro、Shirota Hidekazu、Takahashi Masanobu、Ishioka Chikashi
    • Journal Title

      Clinical Colorectal Cancer

      Volume: 22 Pages: 327~338

    • DOI

      10.1016/j.clcc.2023.06.001

    • Peer Reviewed / Open Access
  • [Journal Article] Depth of response may predict clinical outcome in patients with recurrent/metastatic head and neck cancer treated with pembrolizumab-containing regimens2023

    • Author(s)
      Saijo Ken、Imai Hiroo、Ouchi Kota、Sasaki Keiju、Yoshida Yuya、Kawamura Yoshifumi、Taniguchi Sakura、Kasahara Yuki、Komine Keigo、Shirota Hidekazu、Takahashi Masanobu、Ishioka Chikashi
    • Journal Title

      Frontiers in Oncology

      Volume: 13 Pages: 1230731

    • DOI

      10.3389/fonc.2023.1230731

    • Peer Reviewed / Open Access
  • [Journal Article] FOLFIRI Chemotherapy for Patients With Metastatic Urachal Carcinoma2023

    • Author(s)
      TANIGUCHI SAKURA HIRAIDE、KOMINE KEIGO、TAKENAGA NORIKO、YOSHIDA YUYA、SASAKI KEIJU、KAWAMURA YOSHIFUMI、KASAHARA YUKI、OUCHI KOTA、IMAI HIROO、SAIJO KEN、SHIROTA HIDEKAZU、TAKAHASHI MASANOBU、ISHIOKA CHIKASHI
    • Journal Title

      Anticancer Research

      Volume: 43 Pages: 5699~5704

    • DOI

      10.21873/anticanres.16775

    • Peer Reviewed
  • [Presentation] Tretinoin enhances the efficacy of combined BRAF, MEK, and EGFR inhibition in BRAFV600E colorectal cancer cells2024

    • Author(s)
      吉田 裕也, 高橋 雅信, 沼倉 龍之助, 谷口 桜, 小峰 啓吾, 石岡 千加史
    • Organizer
      第82回日本癌学会学術総会

URL: 

Published: 2024-12-25  

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