• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Biliary homeostasis regulated by extracellular vesicles and its dysregulation resulting in liver diseases

Research Project

Project/Area Number 19H03632
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionYamagata University

Principal Investigator

Ueno Yoshiyuki  山形大学, 医学部, 教授 (70282126)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Keywords胆汁 / 細胞外小胞 / 胆汁うっ滞 / 胆管癌 / 原発性硬化性胆管炎 / 胆管上皮細胞 / 胆汁酸 / 基底膜側 / 類洞側 / 細胞外ベジクール / 原発性胆汁性胆管炎 / マイクロRNA
Outline of Research at the Start

「胆道系の恒常性維持は、胆汁中のEVに含まれる分子を介した伝達システムを用いた胆道を構成する細胞同士のクロストークにより成立されているのではないか?」という中心仮説を立て、それを示すために「①肝細胞由来のEVと胆管上皮細胞由来のEVは異なる成分を持つ、②それぞれのEV中の分子は下流の胆管上皮細胞に対して異なる細胞生物学的意味を持つ、③胆汁うっ滞性肝疾患ではEVに含まれる因子がさらに周囲の胆管上皮細胞の病態形成に影響する」という論点を立てた。本研究ではこの3つの命題を解明するためにin vitroおよびin vivoの実験系を構築してアプローチする。

Outline of Final Research Achievements

(1) To establish a method for separating EV from bile sample, we conducted joint research with Miraka Research Institute, developed a therapeutic drug, and devised the optimum method for separation from bile. This method revealed that bile samples of human bile stasis liver disease have different compositions and biomarkers for each disease. (2) Separated EV is added from the lumen side of cultured bile duct epithelial cells, and changes in the cells are examined. Clarified. Furthermore, (3) it was found that the basal EV has a fibrosis-enhancing effect that has a more fibrotic-enhancing effect than the normal state in a human disease (human PSC in vitro model stimulated with interferon and bile acid).

Academic Significance and Societal Importance of the Research Achievements

本研究により、より効率が高く純度の高い胆汁中EVの分離法が開発された。本法を用いることにより、新たな疾患バイオマーカーや、創薬につながるデリバリー法の開発が可能となることが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (2 results)

All 2021 2020

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Utility of Claudin-3 in extracellular vesicles from human bile as biomarkers of cholangiocarcinoma.2021

    • Author(s)
      Ikeda C, Haga H, Makino N, Inuzuka T, Kurimoto A, Ueda T, Matsuda A, Kakizaki Y, Ishizawa T, Kobayashi T, Sugahara S, Tsunoda M, Suda K, Ueno Y.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 1195-1195

    • DOI

      10.1038/s41598-021-81023-y

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Patent(Industrial Property Rights)] 胆管がんのバイオマーカー2020

    • Inventor(s)
      池田千咲他
    • Industrial Property Rights Holder
      池田千咲他
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Acquisition Date
      2021
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi