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The physicochemical analysis of amyloid peptide containing D-Asp

Research Project

Project/Area Number 21K06498
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47020:Pharmaceutical analytical chemistry and physicochemistry-related
Research InstitutionTeikyo University

Principal Investigator

UTSUNOMIYA-TATE Naoko  帝京大学, 薬学部, 教授 (00201955)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsアルツハイマー病 / アミロイドβ / 異性化アミノ酸 / D-Asp / 線維形成 / 凝集体 / アミロイドβペプチド / アミノ酸の異性化 / マルチリガンド受容体RAGE / 老化
Outline of Research at the Start

加齢に伴いタンパク質の代謝は低下し、血液中での滞留時間が長くなり、非酵素的アミノ酸異性化が生じる。アルツハイマー病の疾患原因タンパク質アミロイドβ(Aβ)にも加齢に伴って異性化が起こり、凝集性が高まり、アルツハイマー病の病態・症状を促進させる。本研究では溶液条件(温度、イオン強度、共存する溶質等)に応じて試験管内で生成する様々な異性化Aβの機能特性(凝集能、神経細胞毒性、および血液脳関門に存在するマルチリガンド受容体RAGEとの結合能)を解析し、異性化Aβの組成とこれらの機能特性との相関を系統的に解析し、加齢に伴うアルツハイマー病罹患率上昇におけるAβの「老化」の意味を明らかにする。

Outline of Final Research Achievements

Amyloid b protein, known as a pathogenic protein for Alzheimer’s disease, reportedly contains stereo chemically isomerized Asp (D-Asp) at three positions (residues 1, 7, and 23) in aged patients: the elevated fibrilization of Amyloid b containing D-Asp is supposed to relevant to promote the progression of Alzheimer’s disease. We characterized Amyloid b that contains D-Asp residues with biophysical approaches, in terms of the structural stabilities of its fibrils and aggregates, the morphologies, and its cross-seeding abilities to induce amyloid fibrils. We found Amyloid b proteins with D-Asp residues elevated fibrilization and aggregation by raising rates in each constituting step for the processes.

Academic Significance and Societal Importance of the Research Achievements

アルツハイマー病患者の脳の老人斑を構成している疾患原因タンパク質アミロイドβ(Aβ)内に3箇所、存在するAsp(1位、7位、23位)がD-Aspに異性化していることが見出されたが、これまでその物性・機能の詳細については不明であった。本研究により、生物物理学的な観点から、異性化D-Asp含有Aβが有する物性や機能に関する様々な特性(線維・凝集体構造の安定性と微細形態、及び線維形成プロセス)を明らかにすることができた。この研究成果はアルツハイマー病の予防、及び治療薬の開発に繋がる重要な分子基盤情報となる。

Report

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

    (14 results)

All 2024 2023 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (7 results) Book (1 results)

  • [Journal Article] LRRK2-mediated phosphorylation and thermal stability of Rab12 are regulated by bound nucleotides2023

    • Author(s)
      Genta Ito, Taisuke Tomita and Naoko Utsunomiya-Tate
    • Journal Title

      Biochem.Biophys.Res. Commun.

      Volume: 667 Pages: 43

    • DOI

      10.1016/j.bbrc.2023.05.048

    • URL

      https://pure-staging.teikyo.jp/en/publications/22d3a4d8-d145-4cc8-9b18-88b40c8e93aa

      https://pure.teikyo.jp/en/publications/86b320ad-b857-4a4b-a43b-983901920a6a

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Site-specific amino acid D-isomerization of Tau R2 and R3 peptides changes the fibril morphology, resulting in attenuation of Tau aggregation inhibitor potency.2023

    • Author(s)
      Murata T., Ito, G. and Utsunomiya-Tate, N.
    • Journal Title

      Biochem. Biophys, Res. Commun.

      Volume: 654 Pages: 18-25

    • DOI

      10.1016/j.bbrc.2023.02.073

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A tailored tetravalent peptide displays dual functions to inhibit amyloid β production and aggregation.2023

    • Author(s)
      Sato W., Watanabe-Takahashi M., Murata T., Utsunomiya-Tate N., Motoyama J., Anzai M., Ishihara S., Nishioka N., Uchiyama H., Togashi J., Nishihara S., Kawasaki K., Saito T., Saido TC., Funamoto S., Nishikawa K.
    • Journal Title

      Commun. Biol.

      Volume: 6 Issue: 1 Pages: 383-383

    • DOI

      10.1038/s42003-023-04771-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Adverse drug event profile associated with anti-dementia drugs analysis of a spontaneous reporting database.2023

    • Author(s)
      E. Kose, T. Yamamoto, N. Utsunomiya-Tate, A. Ando, H. Enomoto, N. Yasuno
    • Journal Title

      Pharmazie

      Volume: 78 Pages: 42-46

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Overview of the Impact of Pathogenic LRRK2 Mutations in Parkinson’s Disease2023

    • Author(s)
      Ito.G. and Utsunomiya-Tate N.
    • Journal Title

      Biomolecules

      Volume: 13 Issue: 5 Pages: 845-845

    • DOI

      10.3390/biom13050845

    • URL

      https://pure.teikyo.jp/en/publications/1c080649-e130-4945-8db2-450819b0a43c

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Physicochemical characterization of the G51D mutation of α-synuclein that is responsible for its severe cytotoxicity2021

    • Author(s)
      Murata Takuya、Tochio Naoya、Utsunomiya-Tate Naoko
    • Journal Title

      Neuroscience Letters

      Volume: 760 Pages: 136077-136077

    • DOI

      10.1016/j.neulet.2021.136077

    • URL

      https://pure.teikyo.jp/en/publications/024e7a26-35d8-48d9-be50-d582abeaaaa8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] アミノ酸のD-体異性化がアミロイドβのシード効果に及ぼす影響の解析2024

    • Author(s)
      村田拓哉、楯 直子
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] タウ線維化にアミノ酸D-体異性化が及ぼす影響の解析2023

    • Author(s)
      村田拓哉、伊藤弦太、楯 直子
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] タウのD-アミノ酸が線維形成に及ぼす影響の解析2022

    • Author(s)
      村田拓哉、矢萩真菜、国生莉奈、楯 直子
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Aβの産生ならびに凝集を抑制する多価型ペプチドの同定2022

    • Author(s)
      佐藤和佳、高橋美帆、村田拓哉、楯 直子、内山陽菜、斉藤貴志、西道隆臣、舟本聡、西川喜代孝
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] タウ微小管結合領域におけるアミノ酸D-体異性化と線維化・凝集体形成の相関関係の解析2022

    • Author(s)
      村田拓哉、大塚遥菜、矢萩真菜、国生莉奈、伊藤弦太、楯 直子
    • Organizer
      日本薬学会第143年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 変異型α-synuclein;30PおよびA53Eの線維形成プロセスの解析2022

    • Author(s)
      村田拓哉、小嶋淳也、吉根直加、小澤雅史、楯 直子
    • Organizer
      第142回日本薬学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 家族性パーキンソン病を惹起する変異型α-synucleinの構造と線維形成の解析2021

    • Author(s)
      村田拓哉、小嶋淳也、吉根直加、小澤雅史、楯 直子
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Book] 薬学生の物理化学2021

    • Author(s)
      楯 直子・平嶋 尚英
    • Total Pages
      270
    • Publisher
      培風館
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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