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Exploration of novel pathogens for prostate cancer

Research Project

Project/Area Number 17K11143
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Urology
Research InstitutionKochi University

Principal Investigator

ASHIDA Shingo  高知大学, 教育研究部医療学系臨床医学部門, 講師 (80380327)

Co-Investigator(Kenkyū-buntansha) 中川 英刀  国立研究開発法人理化学研究所, 生命医科学研究センター, チームリーダー (50361621)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords前立腺癌 / 病原体 / 癌 / ゲノム / ウィルス / 細菌 / 微生物
Outline of Final Research Achievements

To identify pathogen for prostate cancer, we investigated the transcriptomes of human prostate samples using whole-genome next generation sequencing. RNA-seq analysis identified four bacteria as candidate pathogens, which included Moraxella osloensis, Uncultured chroococcidiopsis, Cutibacterium acnes, and Micrococcus luteus. We performed PCR, direct sequencing, or immunohistochemistry to validate these candidate pathogens. Interestingly, C. acnes were more frequently found in prostatic intraepithelial neoplasia (PIN), which prompted us to hypothesize that C. acnes might play a critical role in the transition from normal epithelium to PIN.

Academic Significance and Societal Importance of the Research Achievements

前立腺癌は、以前より感染症との関連が示唆されているが、実際には原因となるpathogenは見つかっていない。子宮頸癌においては、pathogenであるヒトパピローマウィルスに対するワクチンがすでに開発されており、本邦以外では、子宮頸癌罹患数は劇的に減少している。本研究成果を基に研究を発展させることにより、前立腺癌の発生メカニズムから予防まで幅広く社会に貢献できると考える。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (1 results)

All 2020

All Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] RNA-seq analysis identified candidate pathogens for prostate cancer2020

    • Author(s)
      Shingo Ashida
    • Organizer
      AACR Special Conference on The Microbiome, Viruses, and Cancer
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

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