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Identifications of the ionocytes functional differentiation factors in fish

Research Project

Project/Area Number 19K15912
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 40040:Aquatic life science-related
Research InstitutionUniversity of Miyazaki

Principal Investigator

Miyanishi Hiroshi  宮崎大学, 農学部, 助教 (30726360)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsメダカ / 浸透圧調節 / 塩類細胞 / 分化 / トランスクリプトーム解析 / 1細胞解析 / 広塩性 / トランスクリプトーム / 環境適応 / 分化誘導因子 / 分化誘導シグナリング
Outline of Research at the Start

魚類には、川(淡水)でしか生きられない魚、海(海水)でしか生きられない魚とサケやウナギ、メダカの様に川と海の両方で生きられる魚が存在します。塩分の違う環境で生きるためには、塩分を調節することが必須であり、鰓に存在する塩類細胞が淡水では不足する塩分を取り込み、海水では塩分を排出します。この両方の機能を決める遺伝子を見つけることで、なぜ魚が川や海で生きられるのかという疑問を解決することができるはずです。この研究を発展させ、様々な塩分環境で養殖できる魚を調べる指標を見つけ、魚の増養殖の活性に繋げます。

Outline of Final Research Achievements

Osmoregulation in fish is important for maintaining the body fluid homeostasis. The understanding of its mechanism will contribute to improve the aquaculture in fish. Fish live mainly in freshwater and seawater. Osmoregulation, mainly Na+ and Cl-, is essential for fish to adapt to an osmotic environment that differs greatly from that in the body. Ionocytes distributed in gills are essential for osmoregulation. In this study, we identified novel target genes involved in the ionocytes functional differentiation. These results may lead us to answer the question, "Why are fish able to adapt to different saline environments?" In addition, the evaluation of the target genes can be established as markers of freshwater and seawater adaptation, and contribute to the development of technologies to stimulate aquaculture in various saline environments.

Academic Significance and Societal Importance of the Research Achievements

塩類細胞分化誘導因子を新規に同定し、そのシグナリング機構の全容を分子レベルで解明することに挑んだ。海洋環境に生息する魚類・爬虫類・鳥類の持つ塩類排出器官におけるイオン排出モデルは共通している。よって、魚類の海水型塩類細胞の分化誘導機構を解明することは、なぜ生物が海水への適応能力を得たかという根源的な疑問に一石を投じるものである。また、ヒト内耳にも魚類の塩類細胞と相同な細胞が哺乳類の内耳におけるリンパ液の浸透圧調節を担う点で共通性があり、メニエール病や内耳性難聴となるペンドレッド症候群の原因遺伝子の解明に寄与できる。本研究課題は、理学・水産学および基礎・臨床医学分野へも学術的波及を生み出せる。

Report

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

    (14 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (9 results) (of which Invited: 3 results)

  • [Journal Article] Establishment of a Simplified System to Evaluate Salinity Preference and Validation of Behavioral Salinity Selection in the Japanese Medaka, Oryzias latipes2021

    • Author(s)
      Miyanishi Hiroshi、Uchida Katsuhisa
    • Journal Title

      Fishes

      Volume: 6 Issue: 2 Pages: 18-18

    • DOI

      10.3390/fishes6020018

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A defective interleukin-17 receptor A1 causes weight loss and intestinal metabolism-related gene downregulation in Japanese medaka, Oryzias latipes2021

    • Author(s)
      Okamura Yo、Miyanishi Hiroshi、Kinoshita Masato、Kono Tomoya、Sakai Masahiro、Hikima Jun-ichi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 12099-12099

    • DOI

      10.1038/s41598-021-91534-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interleukin-17A/F1 Deficiency Reduces Antimicrobial Gene Expression and Contributes to Microbiome Alterations in Intestines of Japanese medaka (Oryzias latipes)2020

    • Author(s)
      Okamura Yo、Morimoto Natsuki、Ikeda Daisuke、Mizusawa Nanami、Watabe Shugo、Miyanishi Hiroshi、Saeki Yuichi、Takeyama Haruko、Aoki Takashi、Kinoshita Masato、Kono Tomoya、Sakai Masahiro、Hikima Jun-ichi
    • Journal Title

      Frontiers in Immunology

      Volume: 11 Pages: 425-425

    • DOI

      10.3389/fimmu.2020.00425

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gene expression patterns of novel visual and non-visual opsin families in immature and mature Japanese eel males2020

    • Author(s)
      Byun Jun-Hwan、Hyeon Ji-Yeon、Kim Eun-Su、Kim Byeong-Hoon、Miyanishi Hiroshi、Kagawa Hirohiko、Takeuchi Yuki、Kim Se-Jae、Takemura Akihiro、Hur Sung-Pyo
    • Journal Title

      PeerJ

      Volume: 8 Pages: e8326-e8326

    • DOI

      10.7717/peerj.8326

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Past seawater experience enhances subsequent growth and seawater acclimability in a later life stage in rainbow trout Oncorhynchus mykiss2019

    • Author(s)
      Kaneko Toyoji、Suzuki Rintaro、Watanabe Soichi、Miyanishi Hiroshi、Matsuzawa Shun、Furihata Mitsuru、Ishida Noriko
    • Journal Title

      Fisheries Science

      Volume: 85 Issue: 6 Pages: 925-930

    • DOI

      10.1007/s12562-019-01351-x

    • NAID

      40022062017

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 単一細胞レベルトランスクリプトーム解析による魚類の鰓塩類細胞分化因子の探索2021

    • Author(s)
      谷口雄真・宮西弘
    • Organizer
      トランスポーター研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] メダカの高浸透圧処理によるカルシウム活性化クロライドチャネルAnoctamin1の発現と局在2021

    • Author(s)
      今野紀文、富樫彩音、宮西弘、中町智哉、松田恒平
    • Organizer
      日本比較内分泌学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ニホンウナギの血嚢体および脳における光周性因子の遺伝子発現解析2021

    • Author(s)
      佐野拓海, 宮西弘, 鎌田優功, 井尻成保, 足立伸次
    • Organizer
      日本水産学会
    • Related Report
      2020 Research-status Report
  • [Presentation] メダカにおけるインターロイキン17受容体A1遺伝子を介した腸内細菌叢制御機構の解明2021

    • Author(s)
      岡村洋, 宮西 弘, 木下政人, 河野智哉, 酒井正博, 引間順一
    • Organizer
      日本水産学会
    • Related Report
      2020 Research-status Report
  • [Presentation] メダカとその近縁種をモデルとした塩分体積機構:鰓塩類細胞分化に着目して2020

    • Author(s)
      宮西 弘
    • Organizer
      第67回 日本生態学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Past seawater experience enhances seawater adaptability and subsequent growth in euryhaline fish2019

    • Author(s)
      Hiroshi Miyanishi
    • Organizer
      The 74th Annual meeting of the Korean association of biological sciences
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 魚類のin vivoコンディショナルノックダウンを用いた塩類細胞分化機構の解明2019

    • Author(s)
      宮西 弘
    • Organizer
      第11 回トランスポーター研究会九州部会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 魚類の浸透圧調節機構の理解から繋げる応用と展望2019

    • Author(s)
      宮西 弘
    • Organizer
      三学会合同宮崎例会(日本動物学会九州支部会)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 板鰓類トラザメにおける孵化腺および孵化酵素の同定2019

    • Author(s)
      宮西弘、石田玲音、工樂樹洋、高木亙、兵藤晋、内田勝久
    • Organizer
      日本動物学会第90回大阪大会
    • Related Report
      2019 Research-status Report

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

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