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Development of innovative treatment for Alzheimer's disease using local interstitial drug administration in the brain.

Research Project

Project/Area Number 20K21641
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionNagoya University

Principal Investigator

Saito Ryuta  名古屋大学, 医学系研究科, 教授 (10400243)

Co-Investigator(Kenkyū-buntansha) 下田 由輝  東北大学, 大学病院, 助教 (30815444)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsアルツハイマー病 / CED / 薬剤送達 / 中枢神経系 / アミロイドβ
Outline of Research at the Start

アルツハイマー病に関して近年、精力的に研究が進められており、アミロイド蛋白の蓄積を可視化する研究が進められている。この中で、早期におけるアミロイド蛋白の蓄積は全般性ではなく、脳のある部位に特に蓄積が多くなる傾向があることが判明しており、アミロイド蓄積部位の局所治療が功を奏する可能性が示唆される。これまでに脳内広範囲薬剤送達技術によりアミロイド蓄積を低減できる可能性を確認しており、本研究では脳局所のアミロイド沈着を解除する新規治療法の開発を行う。

Outline of Final Research Achievements

Aim of this study was to develop novel therapeutic strategy by drug administration using ultrasound facilitated local interstitial drug delivery method that we developed using Alzheimer's disease model mouse 5xFAD (B6.Cg-Tg (APP SwFlLon, PSEN1 *M146L*L286V) 6799Vas/ Mmjax). In the model mouse brain, we established a system for stably evaluating amyloid accumulation by staining paraffin sections with immunoantibody staining. In addition, it was confirmed that neprilysin and curcumin provided effective drug distribution with the above drug delivery method. Furthermore, an attempt was made to decrease amyloid accumulation using these agents. As a result, it was confirmed that neprilysin most stably reduced amyloid plaques. Then, using 5xFAD mice, hippocampal administration techniques were stabilized and hippocampal administration was carried out.

Academic Significance and Societal Importance of the Research Achievements

アルツハイマー病は、認知症を起こす代表的な病気の一つであり、日本での認知症患者数は、2012年現在462万人といわれ、2025年には700万人にまで増加すると予測されている。本疾患は、脳の中に「アミロイドβ(ベータ)タンパク」が蓄積し、このタンパク質の毒性により神経細胞が破壊されて神経細胞数が減ることで発症する。通常本疾患では脳の萎縮は、海馬のあたりから始まって脳全体へと拡がる。つまり病初期には、アミロイド蛋白の局所的な集積がある。これはアミロイドPET検査などで同定されている。従って本研究で確認したように脳局所薬剤投与によるアミロイド蛋白の低減は、新規治療開発につながる可能性がある。

Report

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

    (14 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Journal Article] 特集 脳神経外科医が知っておきたい-てんかんのすべて Ⅰ 脳神経外科医が知っておきたいてんかんの診断と検査 てんかん発作症候学と大脳皮質の機能解剖2023

    • Author(s)
      前澤 聡、石﨑 友崇、齋藤 竜太
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 51 Issue: 1 Pages: 17-28

    • DOI

      10.11477/mf.1436204711

    • ISSN
      0301-2603, 1882-1251
    • Year and Date
      2023-01-10
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic resonance-guided focused ultrasound thalamotomy restored distinctive resting-state networks in patients with essential tremor2023

    • Author(s)
      Kato Sachiko、Maesawa Satoshi、Bagarinao Epifanio、Nakatsubo Daisuke、Tsugawa Takahiko、Mizuno Satomi、Kawabata Kazuya、Tsuboi Takashi、Suzuki Masashi、Shibata Masashi、Takai Sou、Ishizaki Tomotaka、Torii Jun、Mutoh Manabu、Saito Ryuta、Wakabayashi Toshihiko、Katsuno Masahisa、Ozaki Norio、Watanabe Hirohisa、Sobue Gen
    • Journal Title

      Journal of Neurosurgery

      Volume: 138 Issue: 2 Pages: 306-317

    • DOI

      10.3171/2022.5.jns22411

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 特集 Precision Medicine-個別化医療を目指した遺伝子診断と新治療の知見 Ⅰ悪性脳腫瘍 Diffuse midline glioma2022

    • Author(s)
      齋藤 竜太
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 50 Issue: 1 Pages: 29-38

    • DOI

      10.11477/mf.1436204529

    • ISSN
      0301-2603, 1882-1251
    • Year and Date
      2022-01-10
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Involvement of the Thalamus, Hippocampus, and Brainstem in Hypsarrhythmia of West Syndrome: Simultaneous Recordings of Electroencephalography and fMRI Study2022

    • Author(s)
      Maki Y.、Natsume J.、Ito Y.、Okai Y.、Bagarinao E.、Yamamoto H.、Ogaya S.、Takeuchi T.、Fukasawa T.、Sawamura F.、Mitsumatsu T.、Maesawa S.、Saito R.、Takahashi Y.、Kidokoro H.
    • Journal Title

      American Journal of Neuroradiology

      Volume: 43 Issue: 10 Pages: 1502-1507

    • DOI

      10.3174/ajnr.a7646

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 特集 グリオーマ-現在の常識と近未来のスタンダード Ⅳグリオーマ治療法update 化学療法2021

    • Author(s)
      齋藤 竜太
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 49 Issue: 3 Pages: 588-596

    • DOI

      10.11477/mf.1436204432

    • ISSN
      0301-2603, 1882-1251
    • Year and Date
      2021-05-10
    • Related Report
      2021 Research-status Report
  • [Journal Article] Effects of oxytocin on responses to nociceptive and non-nociceptive stimulation in the upper central nervous system.2021

    • Author(s)
      Hidehisa Saito, Shizu Hidema, Ayano Otsuka, Jun Suzuki, Michio Kumagai, Akihiro Kanaya, Toru Murakami, Yusuke Takei, Kazutomo Saito, Shigekazu Sugino, Hiroaki Toyama, Ryuta Saito, Teiji Tominaga, Katsuhiko Nishimori, Masanori Yamauchi
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 574 Pages: 8-13

    • DOI

      10.1016/j.bbrc.2021.08.042

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] H3K27M and TERT promoter mutations are poor prognostic factors in surgical cases of adult thalamic high-grade glioma2021

    • Author(s)
      Osada Yoshinari、Saito Ryuta、Shibahara Ichiyo、Sasaki Keisuke、Shoji Takuhiro、Kanamori Masayuki、Sonoda Yukihiko、Kumabe Toshihiro、Watanabe Mika、Tominaga Teiji
    • Journal Title

      Neuro-Oncology Advances

      Volume: 3 Issue: 1

    • DOI

      10.1093/noajnl/vdab038

    • Related Report
      2021 Research-status Report
  • [Presentation] EFFICACY OF LOCAL ADMINISTRATION OF ALKYLATING AGENT AGAINST BRAINSTEM GLIOMAS2022

    • Author(s)
      Ryuta Saito
    • Organizer
      International Conference on Brain Tumor Research and Therapy
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] びまん性内在性橋グリオーマに対するACNU局所投与による多施設共同第II相医師主導臨床試験2022

    • Author(s)
      齋藤 竜太
    • Organizer
      第40回日本脳腫瘍学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phase II single-arm, multi-center, Physician-Initiated Clinical Trial of Convection-enhanced Delivery of Nimustine Hydrochloride (ACNU) against Diffuse Intrinsic Pontine Gliomas2022

    • Author(s)
      Ryuta Saito
    • Organizer
      第60回日本癌治療学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 最大限摘出を目指すグリオーマの手術:「不易」=手術の安全、「流行」=機器の進歩に応じた術式の変化2022

    • Author(s)
      齋藤 竜太
    • Organizer
      第81回日本脳神経外科学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phase II single-arm, multi-center, Physician-Initiated Clinical Trial of Convection-enhanced Delivery of Nimustine Hydrochloride (ACNU) against Diffuse Intrinsic Pontine Gliomas2022

    • Author(s)
      Ryuta Saito
    • Organizer
      American Society of Clinical Oncology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脳腫瘍治療成績向上を目指して2021

    • Author(s)
      齋藤 竜太
    • Organizer
      第80回日本脳神経外科学会学術総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Visualization of drug delivery in local convection-enhanced delivery against brain tumors2021

    • Author(s)
      Ryuta Saito
    • Organizer
      AIMS Neuro Imaging 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-08-03   Modified: 2024-12-25  

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