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Development of opitimal drug screening using 3D in vitro prostate cancer organoid

Research Project

Project/Area Number 20H03806
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionYamaguchi University

Principal Investigator

Matsuyama Hideyasu  山口大学, 大学院医学系研究科, 教授(特命) (70209667)

Co-Investigator(Kenkyū-buntansha) 萩中 淳  武庫川女子大学, バイオサイエンス研究所, 教授 (20164759)
塩田 真己  九州大学, 大学病院, 講師 (20635445)
平田 寛  山口大学, 医学部附属病院, 助教 (40781307)
清木 誠  山口大学, 大学院医学系研究科, 教授 (50226619)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2022: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Keywordsオルガノイド / CRPC / 薬剤感受性試験 / アビラテロン / 骨微小環境 / 前立腺癌 / 原発巣微小環境 / in vitroモデル / ARAT
Outline of Research at the Start

骨微小環境および原発巣環境を反映したin vitroモデルの開発は転移性進行性前立腺癌の臨床的問題点を解決する上で喫緊の課題である。
本研究を通して①骨微少環境モデルと原発巣環境モデルを用いてARAT治療前後の1細胞RNAシーケンス(以下scRNA-seq)によるクラスタリング解析により発現量に差がある遺伝子を抽出すること。②原発巣が骨転移巣に与える液性因子の有無を検討すること③アビラテロン、デュタステリド併用治療の治療効果・安全性の確認と効果予測症例の遺伝子チップを作成することを予定している。

Outline of Final Research Achievements

(1) Development of in vitro models reflecting bone microenvironment and primary tumor microenvironment: As a result of conducting sensitivity tests to various new androgen receptor blockers (ARATs) using the above model. Both models showed IC50 values of darolutamide was lower than enzalutamide, and apalutamide. (2) Establish of prostate cancer-derived organoids: We have succeeded in creating 10 strains of organoids (including 2 GFP-induced strains) from prostate cancer surgical specimens. (3) Phase II clinical trial in combination with abiraterone and dutasteride for patients with castration-resistant prostate cancer.
The primary endpoint of less than 50% PSA reduction was observed in 18 out of 21 patients (85.7%) with a median follow-up of 15.4 months. There were no adverse events of Grade 3 or higher. Higher 3-keto-5α-abiraterone concentrations were associated with shorter TTF in combination therapy. TTF was prolonged in patients with homozygous wild-type HSD3B1.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した骨微小環境および原発巣微小環境モデルは、ARATs薬剤スクリーニングとして有用であり、薬剤選択の一助となりうる。アビラテロン、デュタステリド併用第II相臨床試験はアビラテロン代謝経路を考慮した理論通りの高い治療効果を示し、代謝中間体(Δ4-アビラテロン、3-ケト-5α-アビラテロン)の推移と臨床効果との相関を証明したことは学術的意義が高い。さらに同代謝酵素の遺伝多型を調べることにより、併用療法がもっとも有効な患者を選択することが可能であることを臨床的に証明したことは、同併用療法の臨床応用に向けた社会的意義は極めて高いと思われる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (6 results)

All 2023 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] A Phase II Trial of Abiraterone With Dutasteride for Second‐Generation Antiandrogen‐ and Chemotherapy‐Na?ve Patients With Castration‐Resistant Prostate Cancer2023

    • Author(s)
      Shiota Masaki、Inoue Ryo、Tashiro Kojiro、Kobayashi Keita、Horiyama Shizuyo、Kanji Hiromi、Eto Masatoshi、Egawa Shin、Haginaka Jun、Matsuyama Hideyasu
    • Journal Title

      The Journal of Clinical Pharmacology

      Volume: 63 Issue: 4 Pages: 445-454

    • DOI

      10.1002/jcph.2191

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 2種類の前立腺癌in vitroモデルを用いた新規アンドロゲン受容体標的薬の抗腫瘍効果の検討2023

    • Author(s)
      小澤 翔、佐本 征弘、平田 寛、松本 洋明、白石 晃司、松山 豪泰.
    • Organizer
      第61回日本癌治療学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phase II study of the efficacy of Abiraterone acetate with Dutasteride for castration resistant prostate2021

    • Author(s)
      Matsuyama H. et al
    • Organizer
      ASCO-GU 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 去勢抵抗異性前立腺癌骨微小環境モデルを用いたEMT関連因子の解析とアビラテロン・デュタステリド併用療法の有効性についての解析2021

    • Author(s)
      佐本征弘、松本洋明、平田 寛、上野耕司、小澤 翔、森 純一、井上 亮、山本義明、矢野誠司、堀川志朱代、萩中 淳、松山豪泰
    • Organizer
      第30回泌尿器科分子・細胞研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Phase II study of the efficacy of Abiraterone acetate with Dutasteride for castration resistant prostate cancer2021

    • Author(s)
      Matsuyama H, Shiota M, Tashiro K, Kanji H, Horiyama S, Eto M, Egawa S, Haginaka J, Inoue R.
    • Organizer
      ASCO-GU 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel bone microenvironment model of prostate cancer with chitosan fiber matrix and osteoblast in 3D culture2020

    • Author(s)
      Samoto M, Matsumoto H, Hirata H, Ueno K, Ozawa S, Mori J, Inoue R, Yano S, Yamamoto Y, MatsuyamaH.
    • Organizer
      American Association of Cancer Research (AACR) virtual annual meeting II
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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