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Molecular mechanism of photoreception in the fish pituitary

Research Project

Project/Area Number 20K08885
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionOkayama University

Principal Investigator

Sato Keita  岡山大学, 医歯薬学域, 助教 (80725622)

Co-Investigator(Kenkyū-buntansha) 神田 真司  東京大学, 大気海洋研究所, 准教授 (50634284)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords光受容 / 下垂体 / 内分泌 / オプシン / メラノサイト刺激ホルモン / 魚類 / ホルモン / 非視覚光受容 / メダカ
Outline of Research at the Start

「オプシン」は動物の眼において視覚の光センサーとして機能するタンパク質である。多くの動物において、オプシンの仲間は眼だけでなく脳や皮膚にもあり、視覚以外の光感知機能に関わることがわかってきている。一方、下垂体は脊椎動物の内分泌機能の中心を担う組織であり、数多くの重要なホルモンを産生・放出する。これまでの研究で、メダカの下垂体にはいくつかのオプシンが発現する事がわかっているが、それが光を感知して、どのような仕組みで、どのホルモンに影響するかという事はわかっていない。本研究ではこれを解明し、さらにはその知見を応用して、ホルモンの放出を光で自由に制御する仕組みを作ることを目指す。

Outline of Final Research Achievements

The pituitary gland, located in the lower part of the brain, is an essential endocrine organ in vertebrates. In medaka (Oryzias latipes), we have revealed that melanocyte-stimulating hormone (MSH)-producing cells in the pituitary gland express the photoreceptor Opn5m, which is similar to that used in visiual photoreception. We showed that MSH-producing cells directly sense ultraviolet light by using Opn5m leading to regulate hormone release. Furthermore, when Opn5m was transfected into other cells and exposed to light, the intracellular calcium concentration could be increased, indicating that Opn5m could be used as a tool to manipulate cell behavior with light.

Academic Significance and Societal Importance of the Research Achievements

レンズを持つ目や脳表にある松果体のように光受容に特化した組織でなく、内分泌機能の中枢と考えられ、実際ホルモン産生細胞の塊といえる下垂体において、直接環境光を感知して機能を調節する機構はこれまでに報告のない、新たな概念である。今後、本研究で得られた知見を基盤として生物の内分泌機能を光操作する手法を発展させることで、疾患の新たな治療や、産業動物の新たな育成法の開発などに繋がる可能性が考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Chromophore Structure in an Inactive State of a Novel Photosensor Protein Opn5L1: Resonance Raman Evidence for the Formation of a Deprotonated Adduct at the 11th Carbon Atom2023

    • Author(s)
      Misao Mizuno, Keita Sato, Takahiro Yamashita, Kazumi Sakai, Yasushi Imamoto, Yumiko Yamano, Akimori Wada, Hideyo Ohuchi, Yoshinori Shichida, and Yasuhisa Mizutani
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 127 Issue: 10 Pages: 2169-2176

    • DOI

      10.1021/acs.jpcb.2c08780

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Involvement of a Basic Helix-Loop-Helix Gene BHLHE40 in Specification of Chicken Retinal Pigment Epithelium2022

    • Author(s)
      Kinuhata Toshiki、Sato Keita、Bando Tetsuya、Mito Taro、Miyaishi Satoru、Nohno Tsutomu、Ohuchi Hideyo
    • Journal Title

      Journal of Developmental Biology

      Volume: 10 Issue: 4 Pages: 45-45

    • DOI

      10.3390/jdb10040045

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The medaka mutant deficient in eyes shut homolog exhibits opsin transport defects and enhanced autophagy in retinal photoreceptors2022

    • Author(s)
      Sato Keita、Liu Yang、Yamashita Takahiro、Ohuchi Hideyo
    • Journal Title

      Cell and Tissue Research

      Volume: 391 Issue: 2 Pages: 249-267

    • DOI

      10.1007/s00441-022-03702-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amino acid residue at position 188 determines the UV-sensitive bistable property of vertebrate non-visual opsin Opn52022

    • Author(s)
      Fujiyabu Chihiro、Sato Keita、Nishio Yukimi、Imamoto Yasushi、Ohuchi Hideyo、Shichida Yoshinori、Yamashita Takahiro
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1 Pages: 63-63

    • DOI

      10.1038/s42003-022-03010-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Opsin 3/Teleost multiple tissue opsin system: mRNA localization in the retina and brain of medaka (Oryzias latipes)2021

    • Author(s)
      Sato Keita、Nwe Nwe Khine、Ohuchi Hideyo
    • Journal Title

      Journal of Comparative Neurology

      Volume: - Pages: 1-33

    • DOI

      10.1002/cne.25106

    • NAID

      120007183941

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] KCNJ13 Gene Deletion Impairs Cell Alignment and Phagocytosis in Retinal Pigment Epithelium Derived from Human-Induced Pluripotent Stem Cells2020

    • Author(s)
      Kanzaki Yuki、Fujita Hirofumi、Sato Keita、Hosokawa Mio、Matsumae Hiroshi、Shiraga Fumio、Morizane Yuki、Ohuchi Hideyo
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 61 Issue: 5 Pages: 38-38

    • DOI

      10.1167/iovs.61.5.38

    • NAID

      120006869576

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fgf10-CRISPR mosaic mutants demonstrate the gene dose-related loss of the accessory lobe and decrease in the number of alveolar type 2 epithelial cells in mouse lung2020

    • Author(s)
      Habuta, M., Yasue, A., Suzuki, K. I. T., Fujita, H., Sato, K., Kono, H., Takayama, A., Bando, T., Miyaishi, S., Oyadomari, S., Tanaka, E. & Ohuchi, H.
    • Journal Title

      PloS one

      Volume: 15 Issue: 10 Pages: e0240333-e0240333

    • DOI

      10.1371/journal.pone.0240333

    • NAID

      120006959727

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 網膜色素変性症原因遺伝子eyes shut homologノックアウトメダカ網膜に見られるオートファジーの活性化2023

    • Author(s)
      佐藤恵太、Liu Yang、山下高廣、大内淑代
    • Organizer
      第128回日本解剖学会総会・全国学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小型魚類メダカ網膜における受容体チロシンキナーゼMerの機能解析2022

    • Author(s)
      佐藤恵太、守屋寛、Liu Yang、大内淑代
    • Organizer
      日本動物学会 第93回 早稲田大会 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Mammalian-type opsin 5 preferentially activates G14 in Gq-type G proteins to trigger intracellular calcium response2022

    • Author(s)
      Keita Sato, Takahiro Yamashita, Hideyo Ohuchi
    • Organizer
      The 19th International Conference on Retinal Proteins (ICRP2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 小型魚類メダカを用いた網膜色素変性症原因遺伝子eyes shut homologの機能解析2021

    • Author(s)
      佐藤恵太、Liu Yang、山下高廣、大内淑代
    • Organizer
      日本解剖学会第 75 回中国・四国支部学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] メダカ網膜における細胞外マトリックスタンパク質eyes shut homologの機能解析2021

    • Author(s)
      佐藤恵太、Liu Yang、山下高廣、大内淑代
    • Organizer
      第92回日本動物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] メダカOpn3/tmtオプシンmRNAの網膜・脳における組織局在2021

    • Author(s)
      佐藤 恵太、Khine Nwe Nwe、大内淑代
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Generation of a medaka model for inherited retinal disease by Crispr/Cas9 mediated genome editing2021

    • Author(s)
      Keita Sato, Liu Yang, Takahiro Yamashita, Hideyo Ohuchi
    • Organizer
      第126回日本解剖学会総会・全国学術集会
    • Related Report
      2020 Research-status Report
  • [Remarks]

    • URL

      https://researchmap.jp/photocrinology

    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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