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New diagnostic and therapeutic strategy for organ fibrosis: Radionuclide ablation of active fibroblasts

Research Project

Project/Area Number 21K19450
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 52:General internal medicine and related fields
Research InstitutionOkayama University

Principal Investigator

Higuchi Takahiro  岡山大学, 医歯薬学域, 教授 (30739850)

Co-Investigator(Kenkyū-buntansha) 大島 康宏  国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 放射線生物応用研究部, 主幹研究員 (00588676)
能勢 直子  岡山大学, 医歯薬学域, 助教 (80642404)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
KeywordsRI内照射療法 / 病的線維化 / 線維芽細胞活性化タンパク質 / FAPI / セラノスティクス / 臓器線維症 / FAP
Outline of Research at the Start

病的線維化は進行性かつ不可逆性の病態で、正常組織を破壊し重篤な臓器機能不全をもたらす。心不全や肝硬変等、病的組織線維化を生じる疾患は多く、新型コロナウィルス感染症患者で肺線維症発症例も報告されている。
本研究では、組織線維症に対する新しい治療戦略の開発を目的とし、放射性同位元素内照射療法を検証する。筋線維芽細胞は病的線維化に大きな役割を果たしていることから、その特徴的な細胞表面マーカー「線維芽細胞活性化タンパク質(FAP)」に強力に結合する放射性ハロゲン標識のFAP inhibitorを開発し、セラノスティクスで臓器線維症の新たな診断治療コンセプトを創出する。

Outline of Final Research Achievements

We have completed synthesis of FAPI precursor for 18F labeling and FAPI precursors for 123/131I and 211At labeling, and have succeeded in production of 125I-FAPI. The target-binding activity of 125I-FAPI was examined in vitro using FAP-expressing positive and negative cells, and binding to FAP was confirmed. In addition, as animal models of tissue fibrosis, we succeeded in establishing a liver cirrhosis model and a pulmonary fibrosis model. In the pulmonary fibrosis model, fibrosis of the lung was confirmed by tissue staining/Western Blotting. Through collaboration with foreign countries, we are analyzing patient data targeting FAP inhibitor.

Academic Significance and Societal Importance of the Research Achievements

新型コロナウィルス感染症では、状態が回復した後にも非特異的に肺組織内に線維化を来たし、重篤な後遺症を残す症例がある。組織線維化の病態分子メカニズムは解明されつつあるが、未だ有効な治療薬は開発されておらず、内照射療法を用いたFAP標的セラノスティクスが画期的な治療戦略となる可能性がある。FAPIの高い標的特異性と、飛程距離が非常に短いα線を組み合わせて利用する211At-FAPIによる治療は、正常組織への影響を最小限に抑えることが可能と考える。RIセラノスティクスによる組織線維症治療は未だ報告されておらず、この新たな治療法を確立できれば、線維症治療を飛躍的に発展させうる可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (9 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 9 results,  Open Access: 9 results)

  • [Int'l Joint Research] Wuerzburg大学/Augsburg大学/Goethe University Frankfurt(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Wuerzburg大学/Augsburg大学(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Wuerzburg大学/Augsburg大学(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] FAPI-PET in Cardiovascular Disease2024

    • Author(s)
      Higuchi Takahiro、Serfling Sebastian E.、Leistner David M.、Speer Thimoteus、Werner Rudolf A.
    • Journal Title

      Seminars in Nuclear Medicine

      Volume: in press Issue: 5 Pages: 1-6

    • DOI

      10.1053/j.semnuclmed.2024.02.006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular imaging of arterial fibroblast activation protein: association with calcified plaque burden and cardiovascular risk factors2023

    • Author(s)
      Kosmala Aleksander、Serfling Sebastian E.、Michalski Kerstin、Lindner Thomas、Schirbel Andreas、Higuchi Takahiro、Hartrampf Philipp E.、Derlin Thorsten、Buck Andreas K.、Weich Alexander、Werner Rudolf A.
    • Journal Title

      European Journal of Nuclear Medicine and Molecular Imaging

      Volume: 50 Issue: 10 Pages: 3011-3021

    • DOI

      10.1007/s00259-023-06245-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Interobserver Agreement Rates on Fibroblast Activation Protein Inhibitor?Directed Molecular Imaging and Therapy2022

    • Author(s)
      Serfling Sebastian E.、Hartrampf Philipp E.、Zhi Yingjun、Higuchi Takahiro、Rowe Steven P.、Bundschuh Lena、Essler Markus、Buck Andreas K.、Bundschuh Ralph Alexander、Werner Rudolf A.
    • Journal Title

      Clinical Nuclear Medicine

      Volume: Publish Ahead of Print Issue: 6 Pages: 512-516

    • DOI

      10.1097/rlu.0000000000004189

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Associations between Normal Organs and Tumor Burden in Patients Imaged with Fibroblast Activation Protein Inhibitor-Directed Positron Emission Tomography2022

    • Author(s)
      Kosmala Aleksander、Serfling Sebastian E.、Dreher Niklas、Lindner Thomas、Schirbel Andreas、Lapa Constantin、Higuchi Takahiro、Buck Andreas K.、Weich Alexander、Werner Rudolf A.
    • Journal Title

      Cancers

      Volume: 14 Issue: 11 Pages: 2609-2609

    • DOI

      10.3390/cancers14112609

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of 68Ga-FAPI-04 PET/CT on Staging and Therapeutic Management in Patients With Digestive System Tumors2022

    • Author(s)
      Kosmala Aleksander、Serfling Sebastian E.、Schloetelburg Wiebke、Lindner Thomas、Michalski Kerstin、Schirbel Andreas、Higuchi Takahiro、Hartrampf Philipp E.、Buck Andreas K.、Weich Alexander、Werner Rudolf A.
    • Journal Title

      Clinical Nuclear Medicine

      Volume: 48 Issue: 1 Pages: 35-42

    • DOI

      10.1097/rlu.0000000000004480

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Training on Reporting and Data System (RADS) for Somatostatin-Receptor Targeted Molecular Imaging Can Reduce the Test Anxiety of Inexperienced Readers2022

    • Author(s)
      Weich Alexander、Higuchi Takahiro、Bundschuh Ralph A.、Lapa Constantin、Serfling Sebastian E.、Rowe Steven P.、Pomper Martin G.、Herrmann Ken、Buck Andreas K.、Derlin Thorsten、Werner Rudolf A.
    • Journal Title

      Molecular Imaging and Biology

      Volume: Publish Ahead of Print Issue: 4 Pages: 631-640

    • DOI

      10.1007/s11307-022-01712-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of Tumor Burden on Normal Organ Distribution in Patients Imaged with CXCR4-Targeted [68Ga]Ga-PentixaFor PET/CT2022

    • Author(s)
      Serfling Sebastian E.、Lapa Constantin、Dreher Niklas、Hartrampf Philipp E.、Rowe Steven P.、Higuchi Takahiro、Schirbel Andreas、Weich Alexander、Hahner Stefanie、Fassnacht Martin、Buck Andreas K.、Werner Rudolf A.
    • Journal Title

      Molecular Imaging and Biology

      Volume: Publish Ahead of Print Issue: 4 Pages: 659-665

    • DOI

      10.1007/s11307-022-01717-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High SUVs Have More Robust Repeatability in Patients with Metastatic Prostate Cancer: Results from a Prospective Test-Retest Cohort Imaged with 18F-DCFPyL2022

    • Author(s)
      Werner RA, Habacha B, Luetje S, Bundschuh L, Higuchi T, Hartrampf P, Serfling SE, Derlin T, Lapa C, Buck AK, Essler M, Pienta KJ, Eisenberger MA, Markowski MC, Shinehouse L, AbdAllah R, Salavati A, Lodge MA, Pomper MG, Gorin MA, Bundschuh RA, Rowe SP.
    • Journal Title

      Molecular Imaging

      Volume: 2022 Pages: 1-10

    • DOI

      10.1155/2022/7056983

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SPECT and PET Radiotracers in Renal Imaging2022

    • Author(s)
      Werner Rudolf A.、Pomper Martin G.、Buck Andreas K.、Rowe Steven P.、Higuchi Takahiro
    • Journal Title

      Seminars in Nuclear Medicine

      Volume: Publish Ahead of Print Issue: 4 Pages: 406-418

    • DOI

      10.1053/j.semnuclmed.2021.12.003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2021-07-13   Modified: 2025-01-30  

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