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Elucidation of the physiological significance of PTK6 family kinases and their application to pathological analysis

Research Project

Project/Area Number 21K07117
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionMicrobial Chemistry Research Foundation (2022-2023)
The University of Tokyo (2021)

Principal Investigator

Kikuchi Ippei  公益財団法人微生物化学研究会, 微生物化学研究所, 研究員 (80772376)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsチロシンキナーゼ / がん / 粘膜免疫 / ゲノム編集 / 回腸 / 遺伝子改変マウス / シグナル伝達 / リン酸化
Outline of Research at the Start

本研究の概要は、いまだ生体内機能が解明されていないチロシンキナーゼファミリーであるPTK6ファミリーキナーゼに着目し、CRISPR/Casゲノム編集によって申請者が最近作製したPTK6ファミリーキナーゼ三重欠損マウスの解析を行うことで、PTK6ファミリーキナーゼが生体内で果たす生理学的役割を明らかにする研究である。さらに、マウスにおける腸疾患モデルを用いることで、病態形成におけるPTK6ファミリーキナーゼの役割を理解し、新たな治療戦略の創出を目指す。

Outline of Final Research Achievements

In this study, we generated PFK triple-knockout mice by simultaneously disrupting three PTK6 family kinases (PFKs) using genome editing. As a result, the PFK triple-knockout mice exhibited abnormalities in intestinal epithelial homeostasis in the ileum, the terminal part of the small intestine. Additionally, these mice showed activation of mucosal immune responses and dysbiosis of the gut microbiota in the ileum. Furthermore, phylogenetic analysis revealed that PFKs and the gastrointestinal tract may have co-evolved, suggesting that the robustness of ileal functions, which are crucial for nutrient absorption and mucosal immunity in higher vertebrates, was acquired through this co-evolution.

Academic Significance and Societal Importance of the Research Achievements

本研究では、これまで生理的機能が全く不明であったPTK6ファミリーキナーゼの生体内機能と病態との関連を調べた。その結果、PTK6ファミリーキナーゼは小腸の末端部位である回腸における組織恒常性や粘膜免疫の調節に必須の役割を担うことを明らかにした。本研究の成果は、回腸が好発部位である炎症性腸疾患「クローン病」や自己免疫疾患などの疾患に対する新たな治療法開発に役立つことが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (3 results)

All 2023 2022 Other

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

  • [Journal Article] Coevolution of the ileum with Brk/Ptk6 family kinases confers robustness to ileal homeostasis2023

    • Author(s)
      Ippei Kikuchi, Yusuke Iwashita, Atsushi Takahshi-Kanemitsu, Michinori Koebis, Atsu Aiba, Masanori Hatakeyama
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 676 Pages: 190-197

    • DOI

      10.1016/j.bbrc.2023.07.051

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Ptk6 family kinases play a specific role in the maintenance of ileal mucosal homeostasis in the alimentary tract2022

    • Author(s)
      Ippei Kikuchi, Masanori Hatakeyama
    • Organizer
      12th AACR-JCA Joint Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 微生物化学研究所ホームページ

    • URL

      https://www.bikaken.or.jp/

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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