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Analysis of the cooperation between transcription activity and lipid metabolism in direct reprogramming

Research Project

Project/Area Number 16K08592
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General medical chemistry
Research InstitutionKyushu University

Principal Investigator

HORISAWA Kenichi  九州大学, 生体防御医学研究所, 助教 (70424207)

Co-Investigator(Kenkyū-buntansha) 鈴木 淳史  九州大学, 生体防御医学研究所, 教授 (30415195)
Research Collaborator NAKAYAMA Takahiro  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsダイレクトリプログラミング / 転写因子 / 代謝 / 脂肪酸 / ベータ酸化 / 肝細胞 / 転写 / クロマチン / 脂質代謝 / 肝細胞様細胞 / アセチル化 / ヒストン修飾 / 転写制御 / アセチルCoA / ベータ酸化 / 核内局在 / Foxa / エピゲノム
Outline of Final Research Achievements

The strategy of direct cell-fate conversion from one cell type into another cell type, termed “direct reprogramming”, is expected to be a complementary or alternative technology for future cell-based regenerative therapies using pluripotent stem cells. Although transduction of defined sets of transcription factors converts the cell-fate easily and efficiently, most of the parts of the molecular mechanism are still unclear. We performed proteomic analysis to discover interacting partners of a transcription factor, Foxa, which has been used in the direct reprogramming of induced hepatocyte-like (iHep) cells, and found that a considerable number of beta-oxidation enzymes physically associated with the Foxa. As a result of detailed study, we identified that some the beta-oxidation enzymes co-localized and formed a complex with the Foxa in the nucleus of iHep cells. This result suggests novel cooperation between transcriptional regulation and lipid metabolism.

Academic Significance and Societal Importance of the Research Achievements

ダイレクトリプログラミングは、iPS細胞のように未分化状態を経ることがないため、誘導した細胞を患者に移植しても癌化の危険性が低く、また比較的短時間で細胞が誘導可能であるという利点がある。そのため再生医療にとって有効な技術であると目されているが、リプログラミングの機構には不明な部分が多く、誘導効率が高くないという問題がある。本研究成果はそのメカニズムの一旦を明らかにするものであり、安全かつ安定的、そして高効率なリプログラミング技術の確立に貢献するものと考えている。

Report

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

    (3 results)

All 2018 2016

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

  • [Journal Article] Prolonged inhibition of hepatocellular carcinoma cell proliferation by combinatorial expression of defined transcription factors2018

    • Author(s)
      Takashima Yasuo、Horisawa Kenichi、Udono Miyako、Ohkawa Yasuyuki、Suzuki Atsushi
    • Journal Title

      Cancer Science

      Volume: 109 Issue: 11 Pages: 3543-3553

    • DOI

      10.1111/cas.13798

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kupffer cells induce Notch-mediated hepatocyte conversion in a common mouse model of intrahepatic cholangiocarcinoma2016

    • Author(s)
      Terada M., Horisawa K., Miura S., Takashima Y., Ohkawa Y., Sekiya S., Matsuda-Ito K., Suzuki A.
    • Journal Title

      Sci Rep

      Volume: 6 Issue: 1 Pages: 34691-34691

    • DOI

      10.1038/srep34691

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] In vitro selection of bispecific diabody fragments using covalent bicistronic DNA display.2016

    • Author(s)
      Nakayama, M., Komiya, S., Fujiwara, K., Horisawa, K., Doi, N.
    • Journal Title

      Biochem. Biophys. Res. Commun.

      Volume: 478 Issue: 2 Pages: 606-611

    • DOI

      10.1016/j.bbrc.2016.07.113

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant

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

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