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Optical control of energy dynamics in mitochondria

Research Project

Project/Area Number 20K21382
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 InstitutionThe University of Tokyo

Principal Investigator

Yawo Hiromu  東京大学, 物性研究所, 特任研究員 (00144353)

Co-Investigator(Kenkyū-buntansha) 井上 圭一  東京大学, 物性研究所, 准教授 (90467001)
Project Period (FY) 2020-07-30 – 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: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsミトコンドリア / エネルギー / オプトジェネティクス / 光遺伝学 / 外向きH+ポンプ / ロドプシン / ターゲティングシグナル / 蛍光タンパク質 / H+ ポンプ / 微生物型ロドプシン / エネルギー代謝
Outline of Research at the Start

ミトコンドリアにおいては、電子伝達系によりH+がマトリックスから膜間腔へ汲み上げられ、内膜を介したH+電気化学勾配が形成される。そして、内膜に存在するH+-ATP合成酵素が、H+濃度勾配を利用し、ADPをATPに変換する。H+ポンプロドプシンやH+選択的チャネルロドプシンをミトコンドリア内膜へターゲッティングすることにより、ミトコンドリアエネルギーダイナミクスを、光で自在に制御するシステムを開発する。本研究により、ミトコンドリアエネルギー代謝の新たな研究領域や食糧、地球温暖化などの問題の解決につながる科学技術が創発することが見込まれる。

Outline of Final Research Achievements

To express H+-pump rhodopsins in the mitochondrial inner membrane (MIM) and to regulate the mitochondrial energy metabolism by light, we used Tim2[91-89], a subunit of the human TIM22 translocase as one of the targeting signals for the MIM. An H+-pump rhodopsin, ArchT was connected to the C-terminal end of Tim2[91-89] and expressed in the culture cells such as Cos7 and ND7/23. The hybrid protein was expressed in the intracellular organelles, but was not co-localized with the mitochondrial markers. It was also expressed in the plasma membrane and transport H+ outwardly as naive ArchT in a manner dependent on the yellow light. We also measured pH change using fluorescent protein pH probes targeted in the mitochondrial matrix. However, their signal/noise was not enough large to measure the small pH changes. It would be necessary to optimize the targeting signals and the pH probes for the optical manipulation of mitochondrial functions using H+-pump rhodopsins.

Academic Significance and Societal Importance of the Research Achievements

ミトコンドリアのエネルギー代謝によりもたらされるATPと熱産生は、生体機能にとり、普遍的かつ不可欠の要素である。また、ヒトにおいてミトコンドリアのエネルギー産生能の低下がミトコンドリア病の主要な原因だが、有効な治療法がない。本研究は、ミトコンドリアエネルギー代謝を光操作する技術の開発であり、その生理、病態生理の解明をそくしんするとともに、細胞内局所のライブイメージング技術などと組み合わせることにより、新しい科学の創出が展望される。本技術を微生物・家畜・農作物に応用することにより、食糧生産を効率化するとともに、生物由来のCO2排出量を削減し、地球温暖化を防止する科学技術の創発が見込まれる。

Report

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

    (12 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (4 results) (of which Invited: 2 results) Book (2 results)

  • [Journal Article] Exploration of natural red-shifted rhodopsins using a machine learning-based Bayesian experimental design2021

    • Author(s)
      Inoue Keiichi、Karasuyama Masayuki、Nakamura Ryoko、Konno Masae、Yamada Daichi、Mannen Kentaro、Nagata Takashi、Inatsu Yu、Yawo Hiromu、Yura Kei、Beja Oded、Kandori Hideki、Takeuchi Ichiro
    • Journal Title

      Communications Biology

      Volume: 4 Issue: 1 Pages: 362-362

    • DOI

      10.1038/s42003-021-01878-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multimodal Functional Analysis Platform: 4. Optogenetics-Induced Oscillatory Activation to Explore Neural Circuits2021

    • Author(s)
      Mushiake Hajime、Ohshiro Tomokazu、Osawa Shin-ichiro、Hosaka Ryosuke、Katayama Norihiro、Tanaka Tetsu、Yawo Hiromu、Osanai Makoto
    • Journal Title

      Adv Exp Med Biol.

      Volume: 1293 Pages: 501-509

    • DOI

      10.1007/978-981-15-8763-4_34

    • ISBN
      9789811587627, 9789811587634
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Application of Optogenetics for Muscle Cells and Stem Cells2021

    • Author(s)
      Asano Toshifumi、Teh Daniel Boon Loong、Yawo Hiromu
    • Journal Title

      Advances in Experimental Medicine and Biology

      Volume: 1293 Pages: 359-375

    • DOI

      10.1007/978-981-15-8763-4_23

    • ISBN
      9789811587627, 9789811587634
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gate-keeper of ion transport-a highly conserved helix-3 tryptophan in a channelrhodopsin chimera, C1C2/ChRWR2020

    • Author(s)
      Nagasaka Yujiro、Hososhima Shoko、Kubo Naoko、Nagata Takashi、Kandori Hideki、Inoue Keiichi、Yawo Hiromu
    • Journal Title

      Biophysics and Physicobiology

      Volume: 17 Issue: 0 Pages: 59-70

    • DOI

      10.2142/biophysico.bsj-2020007

    • NAID

      130007879484

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultraflexible organic light-emitting diodes for optogenetic nerve stimulation2020

    • Author(s)
      Kim Dongmin、Yokota Tomoyuki、Suzuki Toshiki、Lee Sunghoon、Woo Taeseong、Yukita Wakako、Koizumi Mari、Tachibana Yutaro、Yawo Hiromu、Onodera Hiroshi、Sekino Masaki、Someya Takao
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 117 Issue: 35 Pages: 21138-21146

    • DOI

      10.1073/pnas.2007395117

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Physical disuse contributes to widespread chronic mechanical hyperalgesia, tactile allodynia, and cold allodynia through neurogenic inflammation and spino-parabrachio-amygdaloid pathway activation.2020

    • Author(s)
      Ohmichi Y, Ohmichi M, Tashima R, Osuka K, Fukushige K, Kanikowska D, Fukazawa Y, Yawo H, Tsuda M, Naito M, Nakano T.
    • Journal Title

      Pain

      Volume: - Issue: 8 Pages: 1808-1823

    • DOI

      10.1097/j.pain.0000000000001867

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 「なんでも生理学」、「問題指向」、「スクラップアンドビルド」、そして「光遺伝学」2022

    • Author(s)
      八尾寛
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 感覚の光操作2021

    • Author(s)
      八尾寛
    • Organizer
      感性のセンシング・フィードバック技術分科会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 光による植物細胞の膜電位制御系の開発2020

    • Author(s)
      Masae Konno, Hiromu Yawo, Hideki Kandori, Keiichi Inoue
    • Organizer
      第58回日本生物物理学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] The gate-keeper role of a highly conserved helix-3 tryptophan for ion transport of the channelrhodopsin chimera, C1C2/ChRWR2020

    • Author(s)
      Yujiro Nagasaka, Shoko Hososhima, Keiichi Inoue, Hideki Kandori, Hiromu Yawo
    • Organizer
      第58回日本生物物理学会年会
    • Related Report
      2020 Research-status Report
  • [Book] ギャノング生理学 原書26版2022

    • Author(s)
      岡田 泰伸、佐久間 康夫、岡村 康司
    • Total Pages
      910
    • Publisher
      丸善出版
    • ISBN
      9784621307083
    • Related Report
      2021 Annual Research Report
  • [Book] Optogenetics - Light-Sensing Proteins and Their Applications in Neuroscience and Beyond2021

    • Author(s)
      Yawo, H., Kandori, H., Koizumi, A., Kageyama, R. (Eds.)
    • Total Pages
      675
    • Publisher
      Springer
    • ISBN
      9789811587627
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2023-01-30  

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