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Very early diagnosis of Alzheimer's disease by the toxic oligomer specific antibody of amyloid beta

Research Project

Project/Area Number 19H00921
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 37:Biomolecular chemistry and related fields
Research InstitutionKyoto University

Principal Investigator

Irie Kazuhiro  京都大学, 農学研究科, 教授 (00168535)

Co-Investigator(Kenkyū-buntansha) 遠山 育夫  滋賀医科大学, 医学部, 理事 (20207533)
喜田 昭子  京都大学, 複合原子力科学研究所, 助教 (70273430)
徳田 隆彦  国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 脳機能イメージング研究部, 医長(任非) (80242692)
村上 一馬  京都大学, 農学研究科, 准教授 (80571281)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
Fiscal Year 2022: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2021: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2019: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Keywordsアルツハイマー病 / アミロイドβ / 抗毒性ターン特異抗体 / 毒性オリゴマー / 分子内ジスルフィド架橋 / 有機化学 / ジスルフィド架橋 / 2量体 / 脳神経疾患 / 抗体
Outline of Research at the Start

アルツハイマー病(AD)の発症において重要な役割を果たしているアミロイドβタンパク質(Aβ)は、凝集により神経細胞毒性を示す。本研究代表者らは、Aβ42が中央部分で折れ曲がることにより毒性オリゴマーを形成するという「毒性配座理論」を提唱している。本研究ではAβ42の中央部分のターン構造を安定化させるべく、様々な位置で分子内ジスルフィド(S-S)架橋する。最適化した毒性配座モデルを2あるいは3価性リンカーで結合させ、これらに対するモノクローナル抗体を作製し、得られた抗体をシモア装置(1分子ELISA技術を用いた新規イムノアッセイプラットフォーム)に適用することにより超早期AD診断を目指す。

Outline of Final Research Achievements

Amyloid-β (Aβ), which plays an important role in the onset of Alzheimer's disease, exhibits high aggregative ability and cytotoxicity by adopting a turn structure in the central region (positions 22 and 23). In this study, we successfully fixed this toxic turn structure through an intramolecular disulfide crosslink between positions 17 and 28, and developed a conformation-specific antibody (TxCo-1) using this peptide as an antigen. X-ray co-crystal structure analysis revealed that TxCo-1 is the first antibody that recognizes the toxic turn structure. TxCo-1 strongly stained senile plaques in the brains of AD patients, and the staining pattern was significantly different from that of existing N-terminal antibodies. In addition, we also synthesized new dimeric and trimeric Aβ models that exhibited significant cytotoxicity, and were able to clarify the optimal linker structure, crosslink position, and crosslink length to exhibit cytotoxicity.

Academic Significance and Societal Importance of the Research Achievements

本研究代表者は,42残基のアミロイドβ(Aβ42)に関する毒性配座理論(Aβ42の22, 23位でのターン形成によってTyr-10のフェノキシラジカルがMet-35の硫黄ラジカルを効率よく生成させ、それがC末端のカルボキシアニオンによって安定化されることにより疎水性コアを形成して凝集核となる)を提唱してきた.本研究では,この毒性ターン構造を野生型の配列で固定することにより,より生理的条件下に近い毒性オリゴマー構造を再現することに成功した.今回開発したTxCo-1抗体は,毒性オリゴマーに特徴的な配座を認識することから,超早期のアルツハイマー病の診断や治療薬シーズになることが期待される.

Report

(6 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (34 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (12 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 3 results) Presentation (18 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results) Remarks (2 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Structural basis of the 24B3 antibody against the toxic conformer of amyloid β with a turn at positions 22 and 232022

    • Author(s)
      Irie Yumi、Matsushima Yuka、Kita Akiko、Miki Kunio、Segawa Tatsuya、Maeda Masahiro、Yanagita Ryo C.、Irie Kazuhiro
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 621 Pages: 162-167

    • DOI

      10.1016/j.bbrc.2022.07.010

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and Characterization of Propeller- and Parallel-Type Full-Length Amyloid β40 Trimer Models2022

    • Author(s)
      Uchino Ayumi、Irie Yumi、Tsukano Chihiro、Kawase Taiji、Hirose Kenji、Kageyama Yusuke、Tooyama Ikuo、Yanagita Ryo C.、Irie Kazuhiro
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 13 Issue: 16 Pages: 2517-2528

    • DOI

      10.1021/acschemneuro.2c00363

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimization of the Linker Length in the Dimer Model of E22P-Aβ40 Tethered at Position 382022

    • Author(s)
      Chikugo Ayaka、Irie Yumi、Tsukano Chihiro、Uchino Ayumi、Maki Takahito、Kume Toshiaki、Kawase Taiji、Hirose Kenji、Kageyama Yusuke、Tooyama Ikuo、Irie Kazuhiro
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 13 Issue: 19 Pages: 2913-2923

    • DOI

      10.1021/acschemneuro.2c00436

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural analysis of the TxCo-1 antibody effective against the toxic conformer of amyloid β2022

    • Author(s)
      Irie Kazuhiro、Irie Yumi、Matushima Yuka、Kita Akiko、Kageyama Yusuke、Tooyama Ikuo
    • Journal Title

      Photon Factory Highlights 2021

      Volume: 2021 Pages: 30-31

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structure Optimization of the Toxic Conformation Model of Amyloid β42 by Intramolecular Disulfide Bond Formation2022

    • Author(s)
      Matsushima Yuka、Irie Yumi、Kageyama Yusuke、Bellier Jean‐Pierre、Tooyama Ikuo、Maki Takahito、Kume Toshiaki、Yanagita Ryo C.、Irie Kazuhiro
    • Journal Title

      ChemBioChem

      Volume: n/a Issue: 8

    • DOI

      10.1002/cbic.202200029

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characterization of a Conformation-Restricted Amyloid β Peptide and Immunoreactivity of Its Antibody in Human AD brain2021

    • Author(s)
      Kageyama Yusuke、Irie Yumi、Matsushima Yuka、Segawa Tatsuya、Bellier Jean-Pierre、Hidaka Kumi、Sugiyama Hiroshi、Kaneda Daita、Hashizume Yoshio、Akatsu Hiroyasu、Miki Kunio、Kita Akiko、Walker Douglas G.、Irie Kazuhiro、Tooyama Ikuo
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 12 Issue: 18 Pages: 3418-3432

    • DOI

      10.1021/acschemneuro.1c00416

    • NAID

      120007161279

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Toxic Amyloid-β42 Conformer May Accelerate the Onset of Alzheimer's Disease in the Preclinical Stage.2021

    • Author(s)
      Futamura A, Hieda S, Mori Y, Kasuga K, Sugimoto A, Kasai H, Kuroda T, Yano S, Tsuji M, Ikeuchi T, Irie K, Ono K.
    • Journal Title

      J Alzheimers Dis

      Volume: 80 Issue: 2 Pages: 639-646

    • DOI

      10.3233/jad-201407

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of Alkyl Bridged‐Tris‐α‐Amino Acids as C3‐Symmetric and Linear Linkers2021

    • Author(s)
      Uchino Ayumi、Tsukano Chihiro、Imamoto Tsuneo、Irie Kazuhiro
    • Journal Title

      European Journal of Organic Chemistry

      Volume: 2021 Issue: 9 Pages: 1370-1377

    • DOI

      10.1002/ejoc.202001592

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Control of the toxic conformation of amyloid β42 by intramolecular disulfide bond formation2020

    • Author(s)
      Matsushima Yuka、Yanagita Ryo C.、Irie Kazuhiro
    • Journal Title

      Chemical Communications

      Volume: 56 Issue: 29 Pages: 4118-4121

    • DOI

      10.1039/d0cc01053g

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and Structure-Function Analyses of the Toxic Dimer and Trimer Models of Amyloid β2019

    • Author(s)
      Irie Kazuhiro
    • Journal Title

      Journal of Synthetic Organic Chemistry, Japan

      Volume: 77 Issue: 12 Pages: 1201-1208

    • DOI

      10.5059/yukigoseikyokaishi.77.1201

    • NAID

      130007760861

    • ISSN
      0037-9980, 1883-6526
    • Year and Date
      2019-12-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New diagnostic method for Alzheimer's disease based on the toxic conformation theory of amyloid β2019

    • Author(s)
      Irie Kazuhiro
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 84 Issue: 1 Pages: 1-16

    • DOI

      10.1080/09168451.2019.1667222

    • NAID

      120006800709

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal structure analysis of the antibody that is specific to the toxic conformer of amyloid beta2019

    • Author(s)
      Irie Kazuhiro、Irie Yumi、Kita Akiko
    • Journal Title

      Photon Factory Activity Report 2018

      Volume: 36

    • Related Report
      2019 Annual Research Report
  • [Presentation] Synthesis and characterization of dimer and trimer models of amyloid β tethered at the C-terminal region2023

    • Author(s)
      Irie Kazuhiro
    • Organizer
      6th International Symposium of Kyoto Biomolecular Mass Spectrometry Society (Kyoto)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] アミロイドβ40の平行β-シート型3量体モデルの構造最適化2023

    • Author(s)
      内野歩美、入江由美、筑後文馨、塚野千尋、牧 俊人、久米利明、景山裕介、遠山育夫、入江一浩
    • Organizer
      2023年度日本農芸化学会大会(オンライン開催)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Toxic amyloid β42 conformer may accelerate the onset of Alzheimer's disease in the preclinical stage2022

    • Author(s)
      Futamura Akinori、Hieda Sotaro、Mori Yukiko、Kasuga Kensaku、Sugimoto Azusa、Kasai Hideyo、Kuroda Takeshi、Yano Satoshi、Tsuji Mayumi、Ikeuchi Takeshi、Irie Kazuhiro、Ono Kenjiro
    • Organizer
      第63回日本神経学会学術集会(東京)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of a conformation specific antibody identifying toxic conformation of amyloid β peptide2022

    • Author(s)
      Kageyama Yusuke、Irie Yumi、Matsushima Yuka、Segawa Tatsuya、Kaneda Daita、Hashizume Yoshio、Akatsu Hiroyasu、Miki Kunio、Kita Akiko、Irie Kazuhiro、Tooyama Ikuo
    • Organizer
      第63回日本神経病理学会総会学術研究会(京都)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 抗Aβオリゴマー抗体・24B3の毒性配座認識機構の解析2022

    • Author(s)
      入江由美、松島由佳、喜田昭子、三木邦夫、瀬川辰也、前田雅弘、柳田 亮、入江一浩
    • Organizer
      第41回日本認知症学会学術集会、第37回日本老年精神医学会(合同開催)(東京)
    • Related Report
      2022 Annual Research Report
  • [Presentation] アミロイドβの毒性配座を基盤としたアルツハイマー病の早期診断法の開発2022

    • Author(s)
      入江一浩
    • Organizer
      Visionary農芸化学100シンポジウム(京都)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] アミロイドβの毒性配座を標的とした立体構造特異抗体の開発とAD診断2022

    • Author(s)
      入江一浩
    • Organizer
      第11回日本認知症予防学会学術集会(福岡)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 3回対称ならびに平行型Aβ40の3量体モデルの合成と機能解析2022

    • Author(s)
      内野歩美、入江由美、塚野千尋、川瀬泰司、廣瀬賢治、入江一浩
    • Organizer
      2022年度日本農芸化学会大会(京都)(オンライン開催)
    • Related Report
      2021 Annual Research Report
  • [Presentation] アミロイドβの毒性2量体モデルにおけるリンカー長の凝集能と細胞毒性に及ぼす影響2022

    • Author(s)
      筑後文馨、入江由美、内野歩美、塚野千尋、川瀬泰司、廣瀬賢治、入江一浩
    • Organizer
      2022年度日本農芸化学会大会(京都)(オンライン開催)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Toxic amyloid β42 conformer may accelerate the onset of Alzheimer's disease in the preclinical stage2021

    • Author(s)
      二村明徳、稗田宗太郎、森友紀子、春日健作、杉本あずさ、笠井英世、黒田岳志、矢野怜、辻まゆみ、池内 健、入江一浩、小野賢二郎
    • Organizer
      第40回日本認知症学会学術集会(オンデマンド配信)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 分子内ジスルフィド結合形成によるアミロイド β42毒性配座固定モデルの合成および活性評価2021

    • Author(s)
      松島由佳、柳田 亮、入江一浩
    • Organizer
      第39回日本認知症学会学術集会(オンライン開催)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 分子内ジスルフィド結合形成によるアミロイドβ42の毒性配座モデルの最適化2021

    • Author(s)
      松島由佳、入江一浩
    • Organizer
      日本農芸化学会関西支部例会(第514回講演会、オンライン開催)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 病原性凝集ペプチドの3量体モデルのリンカーとなるアルキル架橋トリス-α-アミノ酸の合成2021

    • Author(s)
      内野歩美、塚野千尋、今本恒雄、入江一浩
    • Organizer
      日本農芸化学会2021年度大会(オンライン開催)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 分子内ジスルフィド結合によるアミロイドβ 42の毒性配座固定アナログの合成と生化学的機能解析2019

    • Author(s)
      松島由佳、村上一馬、入江一浩
    • Organizer
      第9回 認知症研究を知る若手研究者の集まり(ホテルヘリテイジ・リゾート、熊谷市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 準安定なアミロイドβの毒性オリゴマーモデルの合成と機能解析2019

    • Author(s)
      入江由美、村上一馬、花木瑞穂、花木祐輔、鈴木天志、今本恒雄、古田 巧、川端猛夫、川瀬泰司、廣瀬賢治、柳田 亮、入江一浩
    • Organizer
      第61回天然有機化合物討論会(広島国際会議場、広島市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] アミロイドβ40の3量体モデルの合成と神経細胞毒性2019

    • Author(s)
      入江由美、花木瑞穂、村上一馬、今本恒雄、古田 巧、川端猛夫、川瀬泰司、廣瀬賢治、柳田 亮、入江一浩
    • Organizer
      第38回日本認知症学会学術集会(京王プラザホテル、東京)
    • Related Report
      2019 Annual Research Report
  • [Presentation] アミロイドβの毒性配座理論を基盤としたアルツハイマー病の予防戦略2019

    • Author(s)
      入江一浩
    • Organizer
      日本農芸化学会関西・中部支部2019年度合同神戸大会(神戸大学、神戸市)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] アミロイドβの毒性配座理論を基盤としたアルツハイマー病の予防戦略2019

    • Author(s)
      入江一浩
    • Organizer
      日本農芸化学会東北支部2019年度大会(弘前大学、弘前市)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Remarks] 生命有機化学分野

    • URL

      https://www.orgchem.kais.kyoto-u.ac.jp

    • Related Report
      2022 Annual Research Report
  • [Remarks] 生命有機化学分野

    • URL

      http://www.orgchem.kais.kyoto-u.ac.jp

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 抗アミロイドβ42モノクローナル抗体2021

    • Inventor(s)
      入江一浩、松島由佳、入江由美、遠山育夫、景山裕介
    • Industrial Property Rights Holder
      入江一浩、松島由佳、入江由美、遠山育夫、景山裕介
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-059059
    • Filing Date
      2021
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] アミロイドβ42架橋アナログペプチド2020

    • Inventor(s)
      入江一浩、松島由佳
    • Industrial Property Rights Holder
      入江一浩、松島由佳
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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