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

Development of liquid biopsy using exosomes released from patient-derived colorectal adenoma organoid

Research Project

Project/Area Number 19K17421
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Moroi Rintaro  東北大学, 大学病院, 助教 (90803594)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords大腸癌 / 大腸腺腫 / オルガノイド / リキッドバイオプシー / エクソソーム
Outline of Research at the Start

1.大腸腺腫・早期癌オルガノイド培養細胞株を作成し、エクソソームを抽出する。
2.大腸腺腫・早期癌由来のエクソソームmiRNA・蛋白のプロファイルを明らかとする
3.同一患者で、腫瘍摘出前後の血清エクソソームの変化と、腫瘍から分泌されるエクソソ
ーム内miRNA、蛋白を比較検証し、リキッドバイオプシーの候補miRNA・蛋白を同定する。
4.同定したmiRNA、蛋白がリキッドバイオプシーとして応用可能か検証する。

Outline of Final Research Achievements

We established organoid cultures from normal colon and CRA using resected specimens. Exosomes were isolated from the conditioned medium organoids. To identify candidates miRNAs for liquid biopsy, we prospectively compared changes in their expression in serum and exosomes before and after endoscopic resection in 26 patients with CRA.Seven exosomal miRNAs were overexpressed in CRA organoids: miR-4323, miR-4284, miR-1268a, miR-1290, miR-6766-3p, miR-21-5p, and miR-1246.The expression levels of four exosomal miRNAs (miR-4323, miR-4284, miR-1290, and miR-1246) and two serum miRNAs (miR-1290 and miR-1246) were significantly lower in post-treatment sera. Combined expression of four exosomal miRNAs could identify both CRA with respective areas under the curve (AUCs) of 0.698. We found that exosomal miRNAs derived from CRA organoid culture could be potential diagnostic biomarkers for CRA.

Academic Significance and Societal Importance of the Research Achievements

本研究ではオルガノイド培養技術を用いることでこれまで困難であった大腸腺腫のエクソソームの評価とリキッドバイオプシーの有用性を明らかにした。オルガノイド培養技術を用いることで、臓器、疾患を問わずエクソソーム研究が可能となる。今後疾患特異的なエクソソームを明らかにすることで機能解析や新たなバイオマーカーの発見、さらにはそれらをターゲットとした治療にも繋がると考えられる。また、本研究で明らかにしたバイオマーカーを用いることで、これまでのスクリーニング検査で発見困難であった大きな大腸腺腫を発見できる可能性がある。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (1 results)

All 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Liquid Biopsy for Colorectal Adenoma: Is the Exosomal miRNA Derived From Organoid a Potential Diagnostic Biomarker?2021

    • Author(s)
      Tomoyuki Handa, Masatake Kuroha, Hiroshi Nagai, Yusuke Shimoyama, Takeo Naito, Rintaro Moroi, Yoshitake Kanazawa, Hisashi Shiga, Yoichi Kakuta, Yoshitaka Kinouchi, Atsushi Masamune
    • Journal Title

      Clin Transl Gastroenterol

      Volume: 12 Issue: 5 Pages: e00356-e00356

    • DOI

      10.14309/ctg.0000000000000356

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2019-04-18   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi