• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of the artificial cell membrane via bottom-up of the channel-membrane reconstitution system

Research Project

Project/Area Number 19K22382
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionUniversity of Fukui

Principal Investigator

Oiki Shigetoshi  福井大学, 高エネルギー医学研究センター, 特命教授 (10185176)

Co-Investigator(Kenkyū-buntansha) 岩本 真幸  福井大学, 学術研究院医学系部門, 教授 (40452122)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsイオンチャネル / 脂質2重膜 / 再構成膜 / 膜張力 / 膜脂質 / contact bubble bilayer / 膜物性 / 接触バブル2重膜法 / 脂質二重膜 / in vitro転写翻訳 / 機械受容チャネル
Outline of Research at the Start

本研究の目的は人工細胞膜をデザインし、組み立て、実際に稼働させることを通して、生体膜のシステムとしての成り立ち・機構を解明することである。そしてそのための新しい実験プラットフォームを確立することである。私達は従来の細胞膜に対する分析的アプローチとは逆の合成的アプローチを確立することを着想した。ここで言う人工細胞膜は、細胞膜の特定の機能に焦点をあて、その本質的な要素を抽出して再構成し、機能をもった人工細胞膜を作ることである。本研究では膜を取り扱う要素技術として私達が開発した新しい2つの方法(再構成膜法とin vitro膜蛋白質発現法)使って「膜を対象とした合成生物学」を目指す。

Outline of Final Research Achievements

Biological membranes are complex systems but can be characterized as fluidic and mosaic features. Membrane proteins are influenced by fluidic lipid bilayer such that bilayer tension modulates the activity of membrane proteins. We have established a simple membrane reconstitution system consisting of the lipid bilayer and ion channels (the Contact Bubble Bilayer method). In this method, membrane physical properties, such as membrane tension and thickness, are readily applied and measured with physical principles. With this system, the dynamic behavior of ion channels upon changes in the bilayer tension was studied, and tension-dependent channel activity was quantitatively evaluated.

Academic Significance and Societal Importance of the Research Achievements

昨年のノーベル医学生理学賞が機械受容チャネルに対してであったように、最近、膜の力学的刺激に応答するチャネルの研究が広く行われている。構造生物学などの進歩により複雑なチャネル構造が明らかになりつつある一方、機能測定に関しては方法的限界が広く知られているにもかかわらずパッチクランプ法が未だ主な方法となっている。私達が開発したContact Bubble Bilayer法は膜張力などの定量的測定が可能であるので、パッチクランプ法に代わって広く使われることが期待される。実際、世界の数か所の研究室が導入し成果が出始めている。

Report

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

    (21 results)

All 2022 2021 2020 2019 Other

All Journal Article (14 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 13 results,  Open Access: 8 results) Presentation (4 results) (of which Invited: 1 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Binding of cardiolipin to the KcsA channel at the membrane outer leaflet allosterically opens the inner gate2022

    • Author(s)
      Inada Masataka、Iwamoto Masayuki、Yoshida Norio、Oiki Shigetoshi、Matsumori Nobuaki
    • Journal Title

      BioRxiv

      Volume: -

    • DOI

      10.1101/2022.02.08.479071

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Visualizing the osmotic water permeability of a lipid bilayer under measured bilayer tension using a moving membrane method2021

    • Author(s)
      Yano Keita、Iwamoto Masayuki、Koshiji Takaaki、Oiki Shigetoshi
    • Journal Title

      Journal of Membrane Science

      Volume: 627 Pages: 1-8

    • DOI

      10.1016/j.memsci.2021.119231

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Geometrical and electrophysiological data of the moving membrane method for the osmotic water permeability of a lipid bilayer2021

    • Author(s)
      Yano Keita、Iwamoto Masayuki、Koshiji Takaaki、Oiki Shigetoshi
    • Journal Title

      Data in Brief

      Volume: 38 Pages: 107309-107309

    • DOI

      10.1016/j.dib.2021.107309

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vectorial insertion of a β-helical peptide into membrane: a theoretical study on polytheonamide B2021

    • Author(s)
      Kalathingal Mahroof、Sumikama Takashi、Oiki Shigetoshi、Saito Shinji
    • Journal Title

      Biophysical Journal

      Volume: 120 Issue: 21 Pages: 4786-4797

    • DOI

      10.1016/j.bpj.2021.09.028

    • NAID

      120007167161

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hysteresis of a Tension-Sensitive K+ Channel Revealed by Time-Lapse Tension Measurements2021

    • Author(s)
      Iwamoto Masayuki、Oiki Shigetoshi
    • Journal Title

      JACS Au

      Volume: 1 Issue: 4 Pages: 467-474

    • DOI

      10.1021/jacsau.0c00098

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conductance selectivity of Na+ across the K+ channel via Na+ trapped in a tortuous trajectory2021

    • Author(s)
      Mita Kenichiro、Sumikama Takashi、Iwamoto Masayuki、Matsuki Yuka、Shigemi Kenji、Oiki Shigetoshi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 118 Issue: 12 Pages: 1-11

    • DOI

      10.1073/pnas.2017168118

    • NAID

      120006996027

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Physical and Chemical Interplay Between the Membrane and a Prototypical Potassium Channel Reconstituted on a Lipid Bilayer Platform2021

    • Author(s)
      Iwamoto Masayuki、Oiki Shigetoshi
    • Journal Title

      Frontiers in Molecular Neuroscience

      Volume: 14 Pages: 1-7

    • DOI

      10.3389/fnmol.2021.634121

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 脂質2重膜の水透過2020

    • Author(s)
      老木成稔
    • Journal Title

      腎と透析

      Volume: 88 Pages: 322-326

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-speed AFM reveals accelerated binding of agitoxin-2 to a K+ channel by induced fit2019

    • Author(s)
      A. Sumino,T. Sumikama,T. Uchihashi,S. Oiki
    • Journal Title

      Science Advances

      Volume: 5 Issue: 7 Pages: 1-10

    • DOI

      10.1126/sciadv.aax0495

    • NAID

      120006649788

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Queueing arrival and release mechanism for K+ permeation through a potassium channel.2019

    • Author(s)
      Sumikama, T. and Oiki, S.
    • Journal Title

      J. Physiol. Sci.

      Volume: 69 Issue: 6 Pages: 919-930

    • DOI

      10.1007/s12576-019-00706-4

    • NAID

      120006715810

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Drop-in-well chamber for droplet interface bilayer with built-in electrodes2019

    • Author(s)
      Urakubo Kazuhiro、Iwamoto Masayuki、Oiki Shigetoshi
    • Journal Title

      Methods Enzymol.

      Volume: 621 Pages: 347-363

    • DOI

      10.1016/bs.mie.2019.02.012

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A concise method for quantitative analysis of interactions between lipids and membrane proteins2019

    • Author(s)
      Inada Masataka、Kinoshita Masanao、Sumino Ayumi、Oiki Shigetoshi、Matsumori Nobuaki
    • Journal Title

      Analytica Chimica Acta

      Volume: 1059 Pages: 103-112

    • DOI

      10.1016/j.aca.2019.01.042

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers2019

    • Author(s)
      Iwamoto Masayuki、Oiki Shigetoshi
    • Journal Title

      J. Vis. Exp.

      Volume: 143 Issue: 143

    • DOI

      10.3791/58840

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] In bulla functional channel expression systems that mimic bacterial synthetic membranes2019

    • Author(s)
      Iwamoto Masayuki、Oiki Shigetoshi
    • Journal Title

      Methods Enzymol.

      Volume: 621 Pages: 231-244

    • DOI

      10.1016/bs.mie.2019.02.011

    • ISBN
      9780128181171
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Hysteretic behavior of the tension-dependent gating of the KcsA potassium channel revealed by the dynamic manipulation of membrane tension2021

    • Author(s)
      Masayuki Iwamoto, Shigetoshi Oiki
    • Organizer
      日本生理学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Relationship between polytheonamide B channel activity and the thickness of lipid bilayers2021

    • Author(s)
      Yuka Matsuki, Masayuki Iwamoto, Masako Takashima, Shigetoshi Oiki
    • Organizer
      日本生理学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Apparent discrepancy of pH-dependent gating behavior of KcsA potassium channel in macroscopic and single-channel current recordings2020

    • Author(s)
      Yuka Matsuki, Masayuki Iwamoto, Shigetoshi Oiki
    • Organizer
      日本生物物理学会
    • Related Report
      2020 Research-status Report
  • [Presentation] イオンチャネル一分子研究の再構成膜系からのアプローチ2019

    • Author(s)
      老木成稔
    • Organizer
      生理研研究会「イオンチャネルと生体膜のダイナミズム:構造生物学の先にあるもの」
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] EurekAlart!

    • URL

      https://www.eurekalert.org/pub_releases/2021-03/uof-nsc022521.php

    • Related Report
      2020 Research-status Report
  • [Remarks] EurekAlart!

    • URL

      https://www.eurekalert.org/pub_releases/2021-04/uof-nmo040821.php

    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 脂質二重膜の制御装置、制御プログラム、制御方法及び制御システム、制御システム及び 同左 薬剤のスクリーニング方法2021

    • Inventor(s)
      吉田俊之、老木成稔、岩本正幸
    • Industrial Property Rights Holder
      吉田俊之、老木成稔、岩本正幸
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-014217
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi