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The study of lipid dynamics regulating the activity of membrane proteins

Research Project

Project/Area Number 18K11135
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionJichi Medical University

Principal Investigator

Hayakawa Eri Saki H. Hayakawa  自治医科大学, 医学部, 助教 (00383753)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords脂質分子 / 脂質膜 / 膜側方ストレス / 膜カバチャーストレス / 多価不飽和脂肪酸 / コレステロール / チャネルタンパク質 / 脂質-タンパク質相互作用 / リン脂質 / アシル鎖 / 分子間パッキングストレス / リン脂質膜中側方ストレス / 膜タンパク質 / 脂質膜の物性 / 脂質分子間側方ストレス / マラリア原虫 / 脂肪酸 / 脂質 / PUFA(多価不飽和脂肪酸) / 膜タンパク質の配向性 / 膜タンパク質の活性と構造変化 / ABCトランスポーター / 脂質膜のcurvature stress / 分子間パッキング / 脂質メディエーター / 機能性脂質 / 脂質―タンパク質相互作用
Outline of Final Research Achievements

This study aims to clarify the novel aspects of lateral packing stress/membrane curvature stress, specifically its impact on membrane protein structure and function at the molecular level. In this study, we used POPG (16:0-18:1) or PAPG(16:0-20:4) with mono-different acyl chains as a model system. Fluorescence lifetime and differential polarization measurements of the fluorescence probe DPH, embedded in the membrane, were measured and analyzed using a multifrequency cross-correlation phase fluorometer. The results revealed a lower spatial packing density between lipid molecules in PAPG than in POPG. The lifetime of DPH was shorter in PAPG than in POPG. Moreover, the orientation of the membrane protein exhibited a distinct pattern in PAPG or POPG lipid bilayers. These results demonstrated the impact of lateral packing stress on the physical properties of the lipid membrane, membrane protein structure, and re-orientation pattern, thereby emphasizing the significance of our study.

Academic Significance and Societal Importance of the Research Achievements

細胞内の生命活動を支える一つにタンパク質-脂質の相互作用がある。複雑なタンパク質-脂質の相互作用によって生じる現象を解明することは、医学やバイオテクノロジー等において革新的な進展をもたらす可能性がある。本研究は多価不飽和脂肪酸を含むアシル鎖の違いが、異なる膜内側方ストレスや膜カヴァチャーストレスを発生し、その結果、膜タンパク質の構造や機能、人工膜への再配向にも影響を与えることを明らかにしたものである。このような膜の物理化学的性質を理解することは、疾患の発症解明や治療法の開発にも結び付き、私たちの健康や医療に関わる重要な知見を提供するのみならず、生命科学分野での技術の開発にも貢献すると考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (15 results)

All 2024 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] Portland State Univ.(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Creative interior design by Plasmodium falciparum: Lipid metabolism and the parasite's secret chamber2021

    • Author(s)
      Tokumasu Fuyuki、Hayakawa Eri H.、Fukumoto Junpei、Tokuoka Suzumi M.、Miyazaki Shinya
    • Journal Title

      Parasitology International

      Volume: 83 Pages: 102369-102369

    • DOI

      10.1016/j.parint.2021.102369

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-malarial activity in a Chinese herbal supplement containing Inonotus obliquus and Panax notoginseng2021

    • Author(s)
      Takuro Endo, Yuki Nakagomi , Eri Kawaguchi, Eri Saki H Hayakawa, Hoai Nam Vu, Hitoshi Takemae, Yuta Shinohara, Da Yang, Tatsuya Usui, Tetsuya Mizutani, Yoichi Nakao, Tetsuya Furuya
    • Journal Title

      Parasitology International

      Volume: Epub 2021 Dec 18 Pages: 102532-102532

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A prospective mechanism and source of cholesterol uptake by Plasmodium falciparum-infected erythrocytes co-cultured with HepG2 cells2021

    • Author(s)
      Eri H Hayakawa, Hirotomo Kato, Glenn A Nardone, Jiro Usukura
    • Journal Title

      Parasitology International

      Volume: 80 Pages: 102179-102179

    • DOI

      10.1016/j.parint.2020.102179

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Heat-killed Lactobacillus sakei HS-1 mitigates small intestinal pathophysiology on Plasmodium berghei ANKA infected C57BL/6 mice2020

    • Author(s)
      Mizuho Shimada , Eri H. Hayakawa and Hiroyuki Matsuoka
    • Journal Title

      Jichi Medical University Journal

      Volume: 43 Pages: 13-19

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Upper gastrointestinal pathophysiology due to mouse malaria Plasmodium berghei ANKA infection (in press)2019

    • Author(s)
      Shimada M, Hirose Y, Shimizu K, Yamamoto DS, Hayakawa EH, Matsuoka H
    • Journal Title

      Tropical Medicine and Health

      Volume: 47(18) Issue: 1 Pages: 0-0

    • DOI

      10.1186/s41182-019-0146-9

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The localization of α-synuclein in the process of differentiation of human erythroid cells2018

    • Author(s)
      Araki Katsuya、Sugawara Kotomi、Hayakawa Eri H.、Ubukawa Kumi、Kobayashi Isuzu、Wakui Hideki、Takahashi Naoto、Sawada Kenichi、Mochizuki Hideki、Nunomura Wataru
    • Journal Title

      International Journal of Hematology

      Volume: 108 Issue: 2 Pages: 130-138

    • DOI

      10.1007/s12185-018-2457-8

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 膜構成リン脂質アシル鎖領域に発生するパッキングストレスと膜タンパク質との相互作用に対する生物物理学的解析の確立2024

    • Author(s)
      早川枝李 , 植木美鈴 , Elmukhtar Alhatmi , 老木成稔 , 徳舛富由樹 , Drake C. Mitchell , 岩本真幸
    • Organizer
      第93回日本寄生虫学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The effect of different lateral packing stress in acyl chains on KcsA orientation and structure in lipid bilayer2024

    • Author(s)
      Eri Saki H. Hayakawa, Misuzu Ueki, Elmukhtar Alhatmi, Shigetoshi Oiki, Fuyuki Tokumasu, Masayuki Iwamoto, Drake C. Mitchell
    • Organizer
      21st IUPAB Congress 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 熱帯熱マラリア原虫-生殖母体期特有の袋状構造に対する電子顕微鏡観察2021

    • Author(s)
      早川枝李 , 徳舛富由樹 , 宮崎真也 , 大野伸彦 , 松本真美 , 臼倉治郎
    • Organizer
      日本寄生虫学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 熱帯熱マラリア原虫を用いた植物由来成分スクリーニングによる抗マラリア化合物同定の試み2021

    • Author(s)
      遠藤太伯郎 、川口絵梨 、早川枝李 、臼井達哉 、篠原祐太、楊達、中込雄貴 、 中尾洋一、古谷哲也
    • Organizer
      日本寄生虫学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Real-time Imaging of Cholesterol Sorting in P. falciparum-erythrocytes by Label-free Holotomographic Microscopy2020

    • Author(s)
      Eri H. Hayakawa, Hirotomo Kato, Glenn Nardone, Jiro Usukura
    • Organizer
      日本寄生虫学会
    • Related Report
      2020 Research-status Report
  • [Presentation] The survival tactics of Plasmodium falciparum in erythrocytic stages2020

    • Author(s)
      Eri H. Hayakawa
    • Organizer
      Invited seminar; The Okinawa Institute of Science and Technology Graduate University (OIST)
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Label-free Holotomographic Microscopy reveal Cholesterol Sorting Occurred in Plasmodium falciparum-erythrocytes2020

    • Author(s)
      Eri H. Hayakawa
    • Organizer
      KAIST e-workshop on Quantitative Phase Imaging
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] マラリア自動診断システムの開発  ― ディープラーニングによる適用評価 ―2019

    • Author(s)
      原口和音,花房昭彦,早川枝李, 加藤大智
    • Organizer
      ライフサポート学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2025-01-30  

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