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Oxidatively modified high-density lipoprotein: its roles in vessel wall tissues and mechanism of its generation.

Research Project

Project/Area Number 19K07051
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionShowa University

Principal Investigator

ITABE Hiroyuki  昭和大学, 薬学部, 教授 (30203079)

Co-Investigator(Kenkyū-buntansha) 澤田 直子 (笹部直子)  昭和大学, 薬学部, 助教 (50643566)
小濱 孝士  昭和大学, 薬学部, 准教授 (60395647)
牧山 智彦  昭和大学, 薬学部, 助教 (60733102)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords酸化LDL / 酸化HDL / 動脈硬化症 / 急性心筋後続 / LC-MS/MS / 好中球細胞外トラップ / HDL / 急性心筋梗塞 / NETs
Outline of Research at the Start

動脈硬化症の発症要因として酸化LDLが指摘されてきた。一方、HDLはコレステロールの引抜き作用に加え、HDL自身が酸化されてLDLの酸化変性を抑制する作用があるが、生じた酸化HDLがどのような性状と作用を持つのか、まだほとんど検討がなされていない。本研究は、酸化HDLの生成過程と病巣形成への関与の解明を目的とする。ウエスタンブロットや質量分析計を用いてapoA-Iの修飾および生成する酸化脂質の分子種を解析し、HDLの酸化変性の過程を検討する。酸化HDLのマクロファージや血管内皮細胞への作用について検討する。また、抗酸化リン脂質抗体を用いてヒト血漿中の酸化HDLの検出と分離を試みる。

Outline of Final Research Achievements

We previously reported the oxidized LDL (oxLDL) isolated from human plasma has a novel structure composed of oxLDL and oxHDL particles. When LDL prelabeled with deuterium-labeled oxidized PC (oxPC) was incubated with HDL, oxPC was quickly hydrolyzed enzymatically and the resulting lysoPC was reacylated by LCAT to form PC. Both oxPC and lysoPC were transferred from LDL to HDL particles spontaneously, and deuterium-labeled PC increased in HDL. NETosis, a novel neutrophil cell death which is related to endothelial damages and thrombosis, was found to be enhanced by the oxLDL-oxHDL complexes isolated from human plasma.

Academic Significance and Societal Importance of the Research Achievements

急性心筋梗塞などの重篤な循環器疾患を引き起こす重要なリスク因子であるoxLDLが、生体内においてはどのような性状を有するのかを明らかにすることで、疾患の早期発見や有効な治療法開発に向けた糸口を見出すことが可能になる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (22 results)

All 2021 2020 2019 2018 Other

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 10 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Remarks (2 results)

  • [Journal Article] Structure and Dynamics of Oxidized Lipoproteins In Vivo: Roles of High-Density Lipoprotein2021

    • Author(s)
      Itabe Hiroyuki、Sawada Naoko、Makiyama Tomohiko、Obama Takashi
    • Journal Title

      Biomedicines

      Volume: 9 Issue: 6 Pages: 655-655

    • DOI

      10.3390/biomedicines9060655

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of protein profiles of the pellicle, gingival crevicular fluid, and saliva: possible origin of pellicle proteins2020

    • Author(s)
      Odanaka Hibiki、Obama Takashi、Sawada Naoko、Sugano Marika、Itabe Hiroyuki、Yamamoto Matsuo
    • Journal Title

      Biological Research

      Volume: 53 Issue: 1 Pages: 3-3

    • DOI

      10.1186/s40659-020-0271-2

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Circulating oxidized LDL increased in patients with acute myocardial infarction is accompanied by heavily modified HDL.2020

    • Author(s)
      Sawada Naoko、Obama Takashi、Koba Shinji、Takaki Takashi、Iwamoto Sanju、Aiuchi Toshihiro、Kato Rina、Kikuchi Masaki、Hamazaki Yuji、Itabe Hiroyuki
    • Journal Title

      Journal of Lipid Research

      Volume: - Issue: 6 Pages: 816-829

    • DOI

      10.1194/jlr.ra119000312

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transfer and enzyme-mediated metabolism of oxidized phosphatidylcholine and lysophosphatidylcholine between low- and high-density lipoproteins.2020

    • Author(s)
      Naoko Sawada, Takashi Obama, Mirei Mizuno, Kiyoshi Fukuhara, Sanju Iwamoto, Toshihiro Aiuchi, Tomohiko Makiyama and Hiroyuki Itabe
    • Journal Title

      Antioxidants

      Volume: 9 Issue: 11 Pages: 1045-1045

    • DOI

      10.3390/antiox9111045

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutrophils as a novel target of modified low-density lipoproteins and an accelerator of cardiovascular diseases.2020

    • Author(s)
      Takashi Obama, Hiroyuki Itabe
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 21 Pages: 8312-8312

    • DOI

      10.3390/ijms21218312

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Circulating oxidized LDL increased in patients with acute myocardial infarction is accompanied by heavily modified HDL.2020

    • Author(s)
      Naoko Sawada, Takashi Obama, Shinji Koba, Takashi Takaki, Sanju Iwamoto, Toshihiro Aiuchi, Rina Kato, Masaki Kikuchi, Yuji Hamazaki, Hiroyuki Itabe.
    • Journal Title

      Journal of Lipid Research

      Volume: 61

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cooperative action of oxidized low-density lipoproteins and neutrophils on endothelial inflammatory responses through neutrophil extracellular trap formation2019

    • Author(s)
      Obama Takashi、Ohinata Hitomi、Takaki Takashi、Iwamoto Sanju、Sawada Naoko、Aiuchi Toshihiro、Kato Rina、Itabe Hiroyuki
    • Journal Title

      Frontiers in Immunology

      Volume: 10 Pages: 1899-1899

    • DOI

      10.3389/fimmu.2019.01899

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of protein-protein interactions using an on-membrane digestion technique2019

    • Author(s)
      Obama Takashi、Miyazaki Takuro、Aiuchi Toshihiro、Miyazaki Akira、Itabe Hiroyuki
    • Journal Title

      Journal of Visualized Experiments

      Volume: 149 Issue: 149 Pages: 149-149

    • DOI

      10.3791/59733

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Proteomics of human glomerulonephritis by laser microdissection and liquid chromatography‐tandem mass spectrometry2019

    • Author(s)
      Kawata Naoto、Kang Dedong、Aiuchi Toshihiro、Obama Takashi、Yoshitake Osamu、Shibata Takanori、Takimoto Masafumi、Itabe Hiroyuki、Honda Kazuho
    • Journal Title

      Nephrology

      Volume: 25 Issue: 4 Pages: 351-359

    • DOI

      10.1111/nep.13676

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Significance of oxidized low-density lipoprotein in body fluids as a marker related to diseased conditions.2018

    • Author(s)
      Itabe Hiroyuki、Kato Rina、Sasabe Naoko、Obama Takashi、Yamamoto Matsuo
    • Journal Title

      Curr Med Chem

      Volume: 25 Issue: 9 Pages: 1576-1593

    • DOI

      10.2174/0929867325666180307114855

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 好中球細胞外トラップ:感染制御から血管疾患の増悪へ2021

    • Author(s)
      小濵孝士、板部洋之
    • Organizer
      第21回Pharmaco-Hematology シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 生体内酸化LDL研究の進展2021

    • Author(s)
      小濵孝士、板部洋之
    • Organizer
      第94回日本生化学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] HDLを伴った血中酸化リポタンパク質粒子の生成と動脈硬化症2020

    • Author(s)
      澤田直子、板部洋之、小濵孝士、木庭新治、巖本三壽、髙木孝士、Wirapol Phimarn、牧山智彦、相内敏弘
    • Organizer
      第93回 日本生化学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 血中酸化リポタンパク質の実態:LDLとHDLの関わりについて2020

    • Author(s)
      板部洋之
    • Organizer
      第73回日本酸化ストレス学会
    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Invited
  • [Presentation] 血中酸化リポタンパク質生成におけるHDLの関わり。2020

    • Author(s)
      澤田直子、小濵孝士、巖本三壽、木庭新治、髙木孝士、相内敏弘、板部洋之
    • Organizer
      第62回日本脂質生化学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Involvement of high-density lipoprotein in oxidatively modified forms of low-density lipoproteins in human circulation.2020

    • Author(s)
      H. Itabe, N. Sawada T. Obama, S.
    • Organizer
      SFRR-India 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 血中酸化リポタンパク質生成におけるHDLの関わり2020

    • Author(s)
      澤田直子、小濵孝士、巖本三壽、木庭新治、髙木孝士、相内敏弘、板部洋之
    • Organizer
      第62回日本脂質生化学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Structure and compositional analysis of oxidized low-density lipoproteins present in plasma from healthy subjects and patients with atherosclerosis2019

    • Author(s)
      Naoko Sawada, Takashi Obama, Sanju Iwamoto, Shinji Koba, Toshihiro Aiuchi, Rina Kato, Hiroyuki Itabe
    • Organizer
      The 9th Biennial Meeting of Society for Free Radical Research-Asia
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 安定同位体リピドミクスを利用したLDL-HDL間の酸化PC代謝解析2019

    • Author(s)
      澤田直子、小濱孝士、福原潔、水野美麗、巖本三壽、相内敏弘、板部洋之
    • Organizer
      第92回日本生化学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 急性心筋梗塞患者血中に増加している酸化HDL-LDL複合体について2019

    • Author(s)
      澤田直子、小濵孝士、巖本三壽、木庭新治、髙木孝士、相内敏弘、板部洋之
    • Organizer
      第61回日本脂質生化学会
    • Related Report
      2019 Research-status Report
  • [Remarks] 研究内容

    • URL

      http://www10.showa-u.ac.jp/~biolchem/sub2.htm

    • Related Report
      2019 Research-status Report
  • [Remarks] 最近の研究業績

    • URL

      http://www10.showa-u.ac.jp/~biolchem/sub4.htm

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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