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Establishment of a spectroscopic evaluation method of anhydrobiosis in anhydrobionts and reconstruction system to elucidate anhydrobiosis mechanism

Research Project

Project/Area Number 20K15781
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43060:System genome science-related
Research InstitutionCenter for Novel Science Initatives, National Institutes of Natural Sciences

Principal Investigator

Tanaka Sae  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, 生命創成探究センター, 特任助教 (60770336)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords乾燥耐性 / クマムシ
Outline of Research at the Start

生命に水は不可欠である。その一方で、ほぼ完全に脱水した状態で生命を維持できる生物種が存在する。この能力は乾燥耐性とよばれ、生体保存のよい手本である。しかしながら、非耐性種における再構成は、いまだに部分的にしか成功していない。そこで、本研究では、これまで試みられてきた再構成系と実際の乾燥耐性生物の細胞内変化の過程がどのように違うのかを、分光学的な手法により検証する。これにより、「乾燥耐性において細胞内でどのような現象が起きているのか」、さらに、再構成系を段階ごとに評価することにより、「乾燥耐性でどのような現象・分子が重要なのか」を理解する。

Outline of Final Research Achievements

Water is essential for life. On the other hand, there are species that can survive in an almost completely dehydrated state. This ability, referred to anhydrobiosis, is a good example of biopreservation and is expected to replace the current mainstream cryopreservation. The purpose of this study is to elucidate the molecular mechanism of anhydrobiosis in tardigrade. In particular, this research focuses on quantifying and visualizing the phenomena that occur during the dehydration process. In this research, I have established a technology to introduce exogenous genes to tardigrade, and observed what kind of phenomenon occurs in the cell of tardigrade using fluorescent proteins such as GFP.

Academic Significance and Societal Importance of the Research Achievements

乾燥耐性は水を完全に失った状態であるが、給水によって元に戻ることができる。このメカニズムの解明は、精子卵子、食物の保存において新たな方法を提供するばかりか、水が必須である生命システムにおける水分子の役割と生体分子との関わりを明らかにすることができる。本研究では、乾燥耐性生物の細胞内において脱水の行程でどのような現象が生じているかを観察する目的で、蛍光タンパク質を細胞内に発現させる実験方法を世界で初めて構築した。

Report

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

    (9 results)

All 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Desiccation-induced fibrous condensation of CAHS protein from an anhydrobiotic tardigrade2021

    • Author(s)
      Yagi-Utsumi Maho、Aoki Kazuhiro、Watanabe Hiroki、Song Chihong、Nishimura Seiji、Satoh Tadashi、Yanaka Saeko、Ganser Christian、Tanaka Sae、Schnapka Vincent、Goh Ean Wai、Furutani Yuji、Murata Kazuyoshi、Uchihashi Takayuki、Arakawa Kazuharu、Kato Koichi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 21328-21328

    • DOI

      10.1038/s41598-021-00724-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiomics study of a heterotardigrade, Echinisicus testudo, suggests the possibility of convergent evolution of abundant heat-soluble proteins in Tardigrada2021

    • Author(s)
      Murai Yumi、Yagi-Utsumi Maho、Fujiwara Masayuki、Tanaka Sae、Tomita Masaru、Kato Koichi、Arakawa Kazuharu
    • Journal Title

      BMC Genomics

      Volume: 22 Issue: 1 Pages: 813-813

    • DOI

      10.1186/s12864-021-08131-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Details of glucose solution near-infrared band assignment revealed the anomer difference in the structure and the interaction with water molecules2021

    • Author(s)
      Tanaka Sae、Tsenkova Roumiana、Yasui Masato
    • Journal Title

      Journal of Molecular Liquids

      Volume: 324 Pages: 114764-114764

    • DOI

      10.1016/j.molliq.2020.114764

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Observation of liquid-liquid phase separation of the mitochondria localized heat-soluble protein MAHS & LEAM of an anhydrobiotic tardigrade; Ramazzottius2021

    • Author(s)
      田中冴、荒川和晴
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ミトコンドリア局在性熱可溶性タンパク質MAHS ・LEAMにおける凝集・LLPS形成観察2021

    • Author(s)
      田中冴、荒川和晴
    • Organizer
      第6回クマムシ学研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Details of glucose solution near-infrared band assignment revealed using deuterium oxide and glucose isotopes2021

    • Author(s)
      Sae Tanaka
    • Organizer
      The 4th Aquaphotomics International Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ヨコヅナクマムシのミトコンドリア局在性熱可溶性タンパク質MAHS ・LEAMにおける2次構造変化の解析2020

    • Author(s)
      田中冴、荒川和晴
    • Organizer
      第五回クマムシ学研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Secondary structure analysis of the mitochondria localized heat-soluble protein MAHS & LEAM of an anhydrobiotic tardigrade; Ramazzottius varieornatus2020

    • Author(s)
      田中冴、荒川和晴
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Analysis of the mitochondria localized heat-soluble protein, and attempt to knockdown and knockout in an anhydrobiotic tardigrade; Ramazzottius varieornatus2020

    • Author(s)
      田中冴
    • Organizer
      第3回 ExCELLSシンポジウム
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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