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

Development of efficient microscale automated module for radiosynthesis of 18F-labeled probes

Research Project

Project/Area Number 20H03614
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionTohoku University

Principal Investigator

Iwata Ren  東北大学, サイクロトロン・ラジオアイソトープセンター, 名誉教授 (60143038)

Co-Investigator(Kenkyū-buntansha) 高橋 和弘  福島県立医科大学, 公私立大学の部局等, 教授 (20370257)
原田 龍一  東北大学, 医学系研究科, 助教 (60735455)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywordsマイクロスケール合成 / フッ素-18 / PETプローブ / 自動合成 / 標識反応 / 濃縮法
Outline of Research at the Start

マイクロスケール合成法は、PET核種の大きな利点である極微量の物質量を活かす新しい標識合成法であり、高価な試薬の使用量を大幅に低減できるだけでなく、高品質な標識プローブ合成を可能にする。本研究では、溶媒を蒸発させながら標識反応を行う濃縮マイクロスケール合成法を適用することで、3μL以下の反応溶媒での高効率標識合成を目指す。放射性のプローブ合成には必須である自動合成を行うための新しいマイクロスケール合成プラットホームを開発し、その有用性を実証する。加えて、既存の市販自動合成装置に濃縮合成法を適用して、合成スケールを大幅に縮小できることを示す。

Outline of Final Research Achievements

Concentration-based microscale radiosynthesis (CBMR) of 18F-labeled probes, where a reaction solution was concentrated into DMSO by evaporating MeCN, was developed. A small AG MP-1 (1.5-2 mg) column allowed to reduce the volume of 20 mM K.222/KHCO3-MeOH to 50 uL by normal flow and to 10 uL by counter-flow for efficient release of [18F]fluoride (>90%). This method was applied to the automated 10-20 uL scale preparations of [18F]FET in overall radiochemical yields of 46±6% using a movable microsyringe. The CBMR was also successfully introduced to preparations of [18F]FDOPA and some probe on a commercial automated module such as a GE FASTlab and an SHI MPS200.
The CBMR method was improved for its robust, reproducible 18F-labeling reaction by changing the concentration procedure and then applied to radiosynthesis of five 18F-labed probes such as [18F]SMBT-1. Finally, a new, compact automated module for CBMR, consisting of 5 6-way valves and 5 microsyringe modules, was developed.

Academic Significance and Societal Importance of the Research Achievements

PETプローブ合成にマイクロスケール濃縮合成法を適用することで、反応に要する高価な前駆体やHPLC精製溶媒の使用量を大幅に削減でき、高品質なプローブの迅速な調製が可能になり、その有用性は非常に大きい。加えて、少ない18F放射能量と試薬量で短時間内に繰り返して合成できるため、標識反応条件等の最適化に使用することで新規18F標識プローブの開発を促進できる。また少量で迅速な合成が可能な本法は、多品種少量のPETプローブのオンデマンド合成に最適であり、PET診断の拡大と深化に利するものと期待される。

Report

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

    (10 results)

All 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (1 results)

  • [Journal Article] Mutations in RZF1, a zinc-finger protein, reduce magnesium uptake in roots and translocation to shoots in rice2023

    • Author(s)
      Kobayashi Natsuko I、Takagi Hiroki、Yang Xiaoyu、Nishizawa-Yokoi Ayako、Segawa Tenta、Hoshina Tatsuaki、Oonishi Takayuki、Suzuki Hisashi、Iwata Ren、Toki Seiichi、Nakanishi Tomoko M、Tanoi Keitaro
    • Journal Title

      Plant Physiology

      Volume: 192 Issue: 1 Pages: 342-355

    • DOI

      10.1093/plphys/kiad051

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Role of Chirality of [<sup>18</sup>F]SMBT-1 in Imaging of Monoamine Oxidase-B2022

    • Author(s)
      Harada Ryuichi、Shimizu Yuki、Du Yiqing、Ishikawa Yoichi、Iwata Ren、Kudo Yukitsuka、Yanai Kazuhiko、Okamura Nobuyuki、Furumoto Shozo
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 13 Issue: 3 Pages: 322-329

    • DOI

      10.1021/acschemneuro.1c00655

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mutagenesis Analysis of GMN Motif in Arabidopsis thaliana Mg2+ Transporter MRS2-12022

    • Author(s)
      Yang Xiaoyu、Kobayashi Natsuko I、Hayashi Yoshiki、Ito Koichi、Moriwaki Yoshitaka、Terada Tohru、Shimizu Kentaro、Hattori Motoyuki、Iwata Ren、Suzuki Hisashi、Nakanishi Tomoko M、Tanoi Keitaro
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: - Pages: 870-874

    • DOI

      10.1093/bbb/zbac064

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 18F-THK5351 PET imaging in neurodegenerative tauopathies2021

    • Author(s)
      Ezura M, Kikuchi A, Okamura N, Ishiki A, Hasegawa T, Harada R, Watanuki S, Funaki Y, Hiraoka K, Baba T, Sugeno N, Yoshida S, Kobayashi J, Kobayashi M, Tano O, Ishiyama S, Nakamura T, Nakashima I, Mugikura S, Iwata R, Taki Y, Furukawa K, Arai H, Furumoto S, Tashiro M, Yanai K, Kudo Y, Takeda A, Aoki M
    • Journal Title

      Front Aging Neurosci

      Volume: 13 Pages: 761010-761010

    • DOI

      10.3389/fnagi.2021.761010

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis and evaluation of 2-pyrrolopyridinylquinoline derivatives as selective tau PET tracers for the diagnosis of Alzheimer's disease2021

    • Author(s)
      Lerdsirisuk Pradith、Harada Ryuichi、Hayakawa Yoshimi、Shimizu Yuki、Ishikawa Yoichi、Iwata Ren、Kudo Yukitsuka、Okamura Nobuyuki、Furumoto Shozo
    • Journal Title

      Nuclear Medicine and Biology

      Volume: 93 Pages: 11-18

    • DOI

      10.1016/j.nucmedbio.2020.10.002

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and pharmacokinetic characterisation of a fluorine-18 labelled brain shuttle peptide fusion dimeric affibody2021

    • Author(s)
      Morito Takahiro、Harada Ryuichi、Iwata Ren、Du Yiqing、Okamura Nobuyuki、Kudo Yukitsuka、Yanai Kazuhiko
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 2588-2588

    • DOI

      10.1038/s41598-021-82037-2

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A concentration-based microscale method for 18F-nucleophilic substitutions and its testing on the one-pot radiosynthesis of [18F]FET and [18F]fallypride2020

    • Author(s)
      Iwata Ren、Terasaki Kazunori、Ishikawa Yoichi、Harada Ryuichi、Furumoto Shozo、Yanai Kazuhiko、Pascali Claudio
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 166 Pages: 109361-109361

    • DOI

      10.1016/j.apradiso.2020.109361

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 18F-SMBT-1: A Selective and Reversible PET Tracer for Monoamine Oxidase-B Imaging2020

    • Author(s)
      Harada Ryuichi、Hayakawa Yoshimi、Ezura Michinori、Lerdsirisuk Pradith、Du Yiqing、Ishikawa Yoichi、Iwata Ren、Shidahara Miho、Ishiki Aiko、Kikuchi Akio、Arai Hiroyuki、Kudo Yukitsuka、Yanai Kazuhiko、Furumoto Shozo、Okamura Nobuyuki
    • Journal Title

      Journal of Nuclear Medicine

      Volume: 62 Issue: 2 Pages: 253-258

    • DOI

      10.2967/jnumed.120.244400

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Short-Term Magnesium Deficiency Triggers Nutrient Retranslocation in Arabidopsis thaliana2020

    • Author(s)
      Ogura Takaaki、Kobayashi Natsuko I.、Hermans Christian、Ichihashi Yasunori、Shibata Arisa、Shirasu Ken、Aoki Naohiro、Sugita Ryohei、Ogawa Takahiro、Suzuki Hisashi、Iwata Ren、Nakanishi Tomoko M.、Tanoi Keitaro
    • Journal Title

      Frontiers in Plant Science

      Volume: 11 Pages: 563-563

    • DOI

      10.3389/fpls.2020.00563

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ボロン酸ピナコールエステル前駆体を用いる[18F]FDOPA自動合成法の開発2022

    • Author(s)
      渡辺利光、岩田 錬、古本祥三、上野悟史、染佳梨子、樋口博紀
    • Organizer
      第62回日本核医学会総会
    • Related Report
      2022 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi