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Analysis of S100 family proteins and exosomal microRNA in duodenal juice as a diagnostic marker of pancreatic ductal adenocarcinoma

Research Project

Project/Area Number 17K16565
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Digestive surgery
Research InstitutionKyushu University

Principal Investigator

MORI yasuhisa  九州大学, 大学病院, 助教 (50632642)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords膵癌 / 十二指腸液 / エクソソーム / 診断マーカー / S100タンパクファミリー / S100タンパク質ファミリー / 膵癌早期発見
Outline of Final Research Achievements

S100A2, S100A4, S100A6, and S100A11 concentrations in duodenal juice were measured using a ELISA kit. But the concentrations S100 family protein were not useful for detection of pancreatic ductal adenocarcinoma. We tried to extract exosomes from duodenal juice by ultracentrifugation. We successfully isolated exosomes from duodenal juice. Also we found exosomal RNA (miR-155) might be a biomarker of pancreatic ductal adenocarcinoma.

Academic Significance and Societal Importance of the Research Achievements

膵癌は他癌と比較して極めて予後不良である。この理由として膵癌は早期には症状に乏しく、発見時には進行癌であることが多いことが挙げられる。このため早期発見と効果的なスクリーニング法の開発が求められるが、微小膵癌の段階で診断されるのは極めて稀である。低侵襲に採取可能な十二指腸液中の膵癌早期発見のマーカーを検出することができれば、膵癌を早期に発見することが可能となり、予後改善の足掛かりとなる可能性がある。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (2 results)

All 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] Pancreatic juice exosomal microRNAs as biomarkers for detection of pancreatic ductal adenocarcinoma2019

    • Author(s)
      Nakamura S, Sadakari Y, Ohtsuka T, Okayama T, Nakashima Y, Gotoh Y, Saeki K, Mori Y, Nakata K, Miyasaka Y, Onishi H, Oda Y, Goggins M, Nakamura M.
    • Journal Title

      Ann Surg Oncol

      Volume: 印刷中 Issue: 7 Pages: 2104-11

    • DOI

      10.1245/s10434-019-07269-z

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 膵液中exosomeを利用した膵癌診断のためのバイオマーカーの検索2018

    • Author(s)
      中村 聡
    • Organizer
      第118回日本外科学会定期学術集会
    • Related Report
      2018 Annual Research Report 2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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