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Development and in vivo application of hyperpolarized molecular probes for aminopeptidase activities

Research Project

Project/Area Number 20K15396
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 37010:Bio-related chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

Saito Yutaro  東京大学, 大学院工学系研究科(工学部), 助教 (10846281)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords超核偏極 / MRI / アミノペプチダーゼ / 分子プローブ / 超偏極分子プローブ / 動的核偏極 / アミノペプチダーゼN / 分子イメージング / 超偏極 / アミノペプチダーゼ活性
Outline of Research at the Start

アミノペプチダーゼは様々な生命現象に関与し、その活性異常は多くの疾患と相関をもつ。そのため、生体内のアミノペプチダーゼ活性をリアルタイムで観測できれば、生命現象の解明や新しい診断手法の開発につながる。これを達成するため、動的核偏極(DNP)を用いた核磁気共鳴(NMR/MRI)に着目した。NMRは生体深部の分子を観測する手法として有力であるが、格段に感度が低いという欠点がある。DNPはこの欠点を克服する方法として注目されている。本研究では、生体深部でのアミノペプチダーゼ活性検出を可能にするDNP-NMR分子プローブの開発と生体内アミノペプチダーゼ活性を解析する新たな計測技術の確立を目指す。

Outline of Final Research Achievements

Dynamic nuclear polarization (DNP) is a technique that dramatically enhances MRI sensitivity and is expected to be applied to next-generation diagnostic techniques. On the other hand, many issues remain in the development of molecular probes necessary for the application of this technology. In particular, the lack of a wide variety of molecular probes applicable in vivo and the absence of guidelines for designing new molecular probes have been major problems.
In this study, it was attempted to develop DNP-MRI molecular probes that detect the activity of aminopeptidases, a group of enzymes that are important in biological phenomena. As a result, a new DNP-MRI molecular probe was developed by precisely designing the molecule targeting aminopeptidase N (APN), which is closely related to angiogenesis, metastasis, and malignancy of cancer. The developed probe was applied to animal models and succeeded in detecting APN activity in vivo and visualizing enzyme activity in tumors.

Academic Significance and Societal Importance of the Research Achievements

動的核偏極 (DNP) 法を用いた核磁気共鳴イメージング (MRI) は、新しい早期診断法や疾患メカニズム解明につながる技術として注目されている。一方、この技術を医療や生命科学に応用するには課題が残されている。本研究成果は、その課題の一つである、分子プローブの多様性の欠乏を解決することに貢献できるものと考えられる。今後、この成果によって得られた分子設計指針を活用することでさらに新しい分子プローブが開発されることが期待される。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 2 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (3 results)

  • [Int'l Joint Research] 国立衛生研究所(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 国立衛生研究所/National Cancer Institute(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Structure-guided design enables development of a hyperpolarized molecular probe for the detection of aminopeptidase N activity in vivo2022

    • Author(s)
      Yutaro Saito, Hiroyuki Yatabe, Iori Tamura, Yohei Kondo, Ryo Ishida, Tomohiro Seki, Keita Hiraga, Akihiro Eguchi, Yoichi Takakusagi, Keisuke Saito, Nobu Oshima, Hiroshi Ishikita, Kazutoshi Yamamoto, Murali C. Krishna, Shinsuke Sando
    • Journal Title

      Science advances

      Volume: 8 Issue: 13

    • DOI

      10.1126/sciadv.abj2667

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structure-based relaxation analysis reveals C-terminal [1-13C]glycine-d2 in peptides has long spin-lattice relaxation time that is applicable to in vivo hyperpolarized magnetic resonance studies2022

    • Author(s)
      Yohei Kondo, Yutaro Saito, Tomohiro Seki, Yoichi Takakusagi, Jumpei Morimoto, Hiroshi Nonaka, Koichiro Miyanishi, Wataru Mizukami, Makoto Negoro, Abdelazim Elsayed Elhelaly, Fuminori Hyodo, Masayuki Matsuo, Natarajan Raju, Rolf Swenson, Murali C. Krishna, Kazutoshi Yamamoto, Shinsuke Sando
    • Journal Title

      ChemRxiv

      Volume: -

    • DOI

      10.26434/chemrxiv-2022-tfkk1

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of enzymatic and magnetic properties of γ-glutamyl-[1-13C]glycine and its deuteration toward longer retention of the hyperpolarized state2021

    • Author(s)
      Yohei Kondo, Yutaro Saito, Abdelazim Elsayed Elhelaly, Fuminori Hyodo, Tatsuya Nishihara, Marino Itoda, Hiroshi Nonaka, Masayuki Matsuo, Shinsuke Sando
    • Journal Title

      RSC advances

      Volume: 11 Issue: 59 Pages: 37011-37018

    • DOI

      10.1039/d1ra07343e

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 複数種のアミノペプチダーゼ活性を検出可能な超偏極分子プローブの設計2021

    • Author(s)
      谷田部 浩行・田村 伊織・近藤 洋平・江口晃弘・高草木 洋一・石田 諒・山本 和俊・Murali C. Krishna・齋藤 雄太朗・山東 信介
    • Organizer
      日本化学会第100春季年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of hyperpolarized molecular probes for in vivo detection of peptidase activities2021

    • Author(s)
      Yutaro Saito, Hiroyuki Yatabe, Iori Tamura, Ryo Ishida, Yohei Kondo, Tomohiro Seki, Akihiro Eguchi, Yoichi Takakusagi, Kazutoshi Yamamoto, Murali C. Krishna, Shinsuke Sando
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 緩和機構の理解に基づく実用的な量子超偏極-核磁気共鳴分子プローブの設計2021

    • Author(s)
      谷田部浩行・近藤洋平・田村伊織・石田諒・関智宏・高草木洋一・大嶋野歩・兵藤文紀・松尾政之・山本和俊・Murali C. Krishna・齋藤雄太朗・山東 信介
    • Organizer
      第3回量子生命科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 複数種のアミノペプチダーゼ活性を検出可能な超偏極分子プローブの設計2021

    • Author(s)
      谷田部浩行
    • Organizer
      日本化学会第101春季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 生体内アミノペプチダーゼN活性を検出する超偏極分子プローブの開発2020

    • Author(s)
      齋藤雄太朗
    • Organizer
      バイオ関連シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 生体内アミノペプチダーゼ活性検出のための実用的量子超偏極MRI分子プローブ開発2020

    • Author(s)
      齋藤雄太朗
    • Organizer
      量子生命科学会第2回大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 生体内アミノペプチダーゼの活性を検出する超偏極分子プローブの開発2020

    • Author(s)
      谷田部浩行
    • Organizer
      第10回CSJ化学フェスタ
    • Related Report
      2020 Research-status Report
  • [Presentation] 量子超偏極-核磁気共鳴分子プローブによるアミノペプチダーゼNおよびアミノペプチダーゼA活性の同時検出2020

    • Author(s)
      谷田部浩行
    • Organizer
      量子生命科学会第2回大会
    • Related Report
      2020 Research-status Report
  • [Remarks] 東京大学工学部プレスリリース

    • URL

      https://www.t.u-tokyo.ac.jp/press/pr2022-03-31-002?hsLang=ja

    • Related Report
      2021 Annual Research Report
  • [Remarks] 量子科学研究開発機構プレスリリース

    • URL

      https://www.qst.go.jp/site/press/20220331-1.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 日本経済新聞オンライン

    • URL

      https://www.nikkei.com/article/DGXZRSP629377_Z20C22A3000000/

    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2023-01-30  

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