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The role of Fatty Acid Transport Protein 3 in mitochondrial respiratory chain disorders exhibiting small-for-gestational age short stature

Research Project

Project/Area Number 16K21331
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pediatrics
Embryonic/Neonatal medicine
Research InstitutionEhime University

Principal Investigator

Yoshimi Tokuzawa  愛媛大学, 医学系研究科, 助教(特定教員) (20406531)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsミトコンドリア / 先天代謝異常 / 遺伝子疾患 / ミトコンドリア病 / ヒトiPS細胞 / エネルギー代謝 / 胎内発育不全 / 呼吸鎖複合体 / 胎内発育
Outline of Final Research Achievements

Mitochondrial diseases are inherited metabolic disorders, which caused by the reduction in the enzyme activities of respiratory chain complexes. FATP3 gene was extracted as causative gene for mitochondrial disorder by whole exome sequencing of a patient. In this study, to clarify the physiological role of FATP3 in mitochondria, we generated FATP3-knockout (KO) hiPSCs from healthy individual derive hiPSCs using a CRISPR-Cas9 system. The expression levels of assembly factors for respiratory chain complexes and the amount of mitochondrial DNA in FATP3 KO hiPSCs were compared with those of the wild-type iPSCs. There were no differences between wild-type and FATP3 KO hiPSCs. These results showed that FATP3 deficiency was not affect the undifferentiated state and the mitochondria respiratory chain complexes in hiPSCs.

Academic Significance and Societal Importance of the Research Achievements

胎内発育不全性低身長症の患者でミトコンドリア呼吸鎖複合体の酵素活性の低下がみられたため、この患者は胎生期、及び出生後の成長に必要なエネルギー産生が不足していることが予想された。FATP3は脂肪酸輸送体をコードする遺伝子であり、ミトコンドリアに局在することが報告されていたが、呼吸鎖酵素複合体とFATP3の間に相互関係があるのかどうかは解明されていない。今回の研究で、FATP3ノックアウトヒトiPS細胞が作製できたことから、この細胞を分化誘導した時のFATP3の影響を検討することが可能となった。胎生期におけるFATP3の機能を解析するためのツールとして有用であると考えている。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2019 2018 2017

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

  • [Journal Article] The N-end rule pathway enzyme Naa10 supports epiblast specification in mouse embryonic stem cells by modulating FGF/MAPK2019

    • Author(s)
      Takekoshi Daisuke、Tokuzawa Yoshimi、Sakanaka Masahiro、Kato Hidemasa
    • Journal Title

      In Vitro Cellular & Developmental Biology - Animal

      Volume: 55 Issue: 5 Pages: 355-367

    • DOI

      10.1007/s11626-019-00341-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] ヒトiPS細胞を用いた外胚葉分化様式の解明2018

    • Author(s)
      外山 研介、元野 誠、加門 啓子、日浦 雄太、徳澤 佳美、茂木 正樹、近藤 洋一、加藤 英政
    • Organizer
      第41回日本分子生物学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒトiPS細胞の分化能評価を可能にする多能性の新概念2018

    • Author(s)
      徳澤佳美
    • Organizer
      大阪医科大学研究拠点育成奨励助成金課題シンポジウム
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] TET1-Induced Human Induced Pluripotent Stem Cells, T-iPS Cells, and their Improved Differentiation Capabilities for Neuroectoderm and Mesendoderm.2017

    • Author(s)
      Makoto Motono, Keiko Hiraki, Shizuka Funayama, Mozhdeh Bagheri, Yoshimi Tokuzawa, Hidemasa Kato.
    • Organizer
      ISSCR 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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