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Functional evolution of novel members of the TAS1R taste receptor family in vertebrates

Research Project

Project/Area Number 19H03272
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 45020:Evolutionary biology-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Nishihara Hidenori  東京工業大学, 生命理工学院, 助教 (10450727)

Co-Investigator(Kenkyū-buntansha) 石丸 喜朗  明治大学, 農学部, 専任教授 (10451840)
戸田 安香  明治大学, 農学部, 特任講師 (10802978)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords味覚 / 味覚受容体 / 感覚 / 脊椎動物 / 進化 / TAS1R / T1R
Outline of Research at the Start

味覚受容体遺伝子のうちTAS1Rファミリーは旨味と甘味の認識を担うことが知られている。本研究では脊椎動物におけるTAS1R遺伝子群の配列進化と機能進化の全容解明を目的とする。具体的には様々な生物種におけるTAS1R遺伝子レパートリーの同定、リガンド物質の特定、発現パターンの解析をおこなう。これにより、魚類から哺乳類に至る進化の過程で嗜好性味物質の受容システムがどのように変遷してきたのかを明らかにすることができると期待される。

Outline of Final Research Achievements

In this study, we revealed the repertoires of taste receptor T1R/TAS1R genes in various vertebrates by analyzing their genomic/transcriptomic data. Through comprehensive phylogenetic analysis of TAS1R gene family, we demonstrated that the TAS1R family is diverse, in contrast to the conventional view. We showed that repeatedly gene duplication and loss events caused the scattered distribution of TAS1R genes on the phylogenetic tree. Furthermore, we conducted functional assays of the newly-identified T1R genes and found that they are capable of recognizing diverse ligands. As a result, this suggests that the taste sensation of vertebrates is more diverse than previously thought.

Academic Significance and Societal Importance of the Research Achievements

本研究では時間軸を追った感覚受容の進化とそれを司る遺伝子の多様化プロセスを相関させた研究として極めて大きな成果が得られた。味覚受容体は生物種ごとに異なる機能を持つことから、味覚進化の解明は各生物種の食性や生息環境への適応メカニズムの解明に繋がる。一方これまでヒトやマウスをはじめとするモデル生物以外の味覚に関しては未だ知見が少ない。今回の非モデル生物から得られた知見を将来的にヒトの味覚受容体の機能研究にフィードバックすることで食品開発分野との相乗効果が生まれる可能性がある。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (5 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Open Access: 3 results,  Peer Reviewed: 3 results)

  • [Int'l Joint Research] Max-Planck-Institut(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Latent taste diversity revealed by a vertebrate-wide catalogue of T1R receptors2023

    • Author(s)
      Nishihara Hidenori、Toda Yasuka、Kuramoto Tae、Kamohara Kota、Goto Azusa、Hoshino Kyoko、Okada Shinji、Kuraku Shigehiro、Okabe Masataka、Ishimaru Yoshiro
    • Journal Title

      bioRxiv

      Volume: N.A.

    • DOI

      10.1101/2023.04.08.532961

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Na+- Cl- cotransporter 2 is not fish-specific and is widely found in amphibians, non-avian reptiles, and select mammals2023

    • Author(s)
      Toya Motoshima, Ayumi Nagashima, Chihiro Ota, Haruka Oka, Kohei Hosono, Ingo Braasch, Hidenori Nishihara, and Akira Kato
    • Journal Title

      Physiological Genomics

      Volume: 55 Issue: 3 Pages: 113-131

    • DOI

      10.1152/physiolgenomics.00143.2022

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] T1R2-mediated sweet sensing in a lizard2022

    • Author(s)
      Liang Qiaoyi、Ko Meng-Ching、Ng Nathaniel S.R.、Reh Borja、Lee Jessica G.H.、Yamashita Atsuko、Nishihara Hidenori、Toda Yasuka、Baldwin Maude W.
    • Journal Title

      Current Biology

      Volume: 32 Issue: 23 Pages: R1302-R1303

    • DOI

      10.1016/j.cub.2022.10.061

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SINEs as Credible Signs to Prove Common Ancestry in the Tree of Life: A Brief Review of Pioneering Case Studies in Retroposon Systematics2022

    • Author(s)
      Nikaido Masato、Nishihara Hidenori、Okada Norihiro
    • Journal Title

      Genes

      Volume: 13 Issue: 6 Pages: 989-989

    • DOI

      10.3390/genes13060989

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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