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Molecular mechanism of metabolic regulation through protein acylations

Research Project

Project/Area Number 19K22639
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 54:Internal medicine of the bio-information integration and related fields
Research InstitutionKumamoto University

Principal Investigator

Yamagata Kazuya  熊本大学, 大学院生命科学研究部(医), 教授 (70324770)

Co-Investigator(Kenkyū-buntansha) 吉澤 達也  熊本大学, 大学院生命科学研究部(医), 准教授 (40313530)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
KeywordsPPARγ / 脂肪細胞 / サーチュイン / SIRT7 / PPARg / PPARgamma / アセチル化 / アシル化 / アシル化修飾 / 転写因子
Outline of Research at the Start

PPARγは脂肪細胞の分化や機能を制御する重要な脂肪細胞に発現する転写因子であり、PPARγ活性化薬は糖尿病の治療薬として広く用いられている。タンパク質は様々な翻訳後修飾を受けることが知られているが、PPARγもリン酸化などの翻訳後修飾を受けており、それら翻訳後修飾がPPARγの活性を制御することが報告されている。申請者はPPARγが様々なアシル化修飾を受けることを新たに見出した。アシル化修飾がPPARγ機能制御に及ぼす影響について検討し、アシル化による代謝制御の分子機構解明を行う。

Outline of Final Research Achievements

Peroxisome proliferator-activated receptor (PPARγ2) is a transcription factor crucial for regulating adipogenesis and glucose/lipid metabolism. Sirtuin 7 (SIRT7), a nicotinamide adenine dinucleotide-dependent deacetylase, also controls metabolism. However, it is not known whether SIRT7 regulates the function of PPARγ2 by its deacetylation. We demonstrated that SIRT7 binds to PPARγ2 and deacetylates PPARγ2 at K382. C3H10T1/2-derived adipocytes expressing PPARγ2K382Q (a mimic of acetylated K) accumulated much less fat than adipocytes expressing wild-type PPARγ2 or PPARγ2K382R (a mimic of nonacetylated K). Global gene expression analysis of adipocytes expressing PPARγ2K382Q revealed that K382Q caused the dysregulation of a set of genes involved in lipogenesis, including Srebp1c, Acaca, Fasn, and Scd1. Our findings indicate that SIRT7-dependent PPARγ2 deacetylation at K382 controls lipogenesis in adipocytes.

Academic Significance and Societal Importance of the Research Achievements

PPARγの合成リガンドは糖尿病の治療薬として広く臨床で使用されているが、近年、PPARγの翻訳後修飾を制御する新たなタイプのPPARγモジュレーターの開発が進んでいる。今回の我々の研究結果はPPARγ382番目のアセチル化修飾が脂質代謝の制御に重要であることを意味しており、今後、同部位のアセチル化修飾変容薬が新たな脂質代謝・代謝異常症の治療標的となる可能性が示された

Report

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

    (18 results)

All 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Remarks (2 results)

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

    • Related Report
      2019 Research-status Report
  • [Journal Article] Murine neonatal ketogenesis preserves mitochondrial energetics by preventing protein hyperacetylation2021

    • Author(s)
      Arima Yuichiro、Nakagawa Yoshiko、Takeo Toru、Ishida Toshifumi、Yamada Toshihiro、et al.
    • Journal Title

      Nature Metabolism

      Volume: 3 Issue: 2 Pages: 196-210

    • DOI

      10.1038/s42255-021-00342-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SIRT7 regulates lipogenesis in adipocytes through deacetylation of PPARg2.2021

    • Author(s)
      Akter F, Tsuyama T, Yoshizawa T, Sobuz SU, Yamagata K
    • Journal Title

      J Diabetes Invest

      Volume: Unknown

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brown adipocyte-derived exosomal miR-132-3p suppress hepatic Srebf1 expression and thereby attenuate expression of lipogenic genes2020

    • Author(s)
      Kariba Yuichi、Yoshizawa Tatsuya、Sato Yoshifumi、Tsuyama Tomonori、Araki Eiichi、Yamagata Kazuya
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 530 Issue: 3 Pages: 500-507

    • DOI

      10.1016/j.bbrc.2020.05.090

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] HNF1α controls glucagon secretion in pancreatic α-cells through modulation of SGLT12020

    • Author(s)
      Sato Yoshifumi、Rahman Md Mostafizur、Haneda Masaki、Tsuyama Tomonori、Mizumoto Tomoya、Yoshizawa Tatsuya、Kitamura Tadahiro、Gonzalez Frank J.、Yamamura Ken-ichi、Yamagata Kazuya
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

      Volume: 1866 Issue: 11 Pages: 165898-165898

    • DOI

      10.1016/j.bbadis.2020.165898

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impact of tissue macrophage proliferation on peripheral and systemic insulin resistance in obese mice with diabetes.2020

    • Author(s)
      Morita Y, Senokuchi T, Yamada S, Wada T, Furusho T, Matsumura T, Ishii N, Nishida S, Nishida S, Motoshima H, Komohara Y, Yamagata K, Araki E.
    • Journal Title

      BMJ Open Diabetes Res Care

      Volume: 8(1) Issue: 1 Pages: e001578-e001578

    • DOI

      10.1136/bmjdrc-2020-001578

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cardiomyocyte Sirt (Sirtuin) 7 Ameliorates Stress-Induced Cardiac Hypertrophy by Interacting With and Deacetylating GATA42020

    • Author(s)
      Yamamura Satoru、Izumiya Yasuhiro、Araki Satoshi、Nakamura Taishi、et al.
    • Journal Title

      Hypertension

      Volume: 75 Issue: 1 Pages: 98-108

    • DOI

      10.1161/hypertensionaha.119.13357

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SIRT7 regulates the nuclear export of NF-κB p65 by deacetylating Ran2019

    • Author(s)
      Sobuz Shihab U.、Sato Yoshifumi、Yoshizawa Tatsuya、Karim Fazlul、Ono Katsuhiko、Sawa Tomohiro、Miyamoto Yoichi、Oka Masahiro、Yamagata Kazuya
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Molecular Cell Research

      Volume: 1866 Issue: 9 Pages: 1355-1367

    • DOI

      10.1016/j.bbamcr.2019.05.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Regulation of Metabolism by nuclear factors2021

    • Author(s)
      Kazuya Yamagata
    • Organizer
      The Quadruple symposium-2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 老化関連疾患の克服による健康寿命の延伸2020

    • Author(s)
      山縣和也
    • Organizer
      第70回日本体質医学会総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] HNF-1αによる膵α細胞機能制御メカニズムの解明2020

    • Author(s)
      佐藤叔史、Md Mostafizur Rahman、羽根田昌樹、水本智也、津山友徳、吉澤達也、北村忠弘、Frank J Gonzalez、山村研一、山縣和也
    • Organizer
      第63回日本糖尿病学会年次学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 膵β細胞と低酸素ストレス2020

    • Author(s)
      山縣和也
    • Organizer
      第58回日本糖尿病学会九州地方会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 低酸素誘導性BHLHE40によるβ細胞機能低下機序の解明2019

    • Author(s)
      佐藤叔史、津山友徳、吉澤達也、松岡孝昭、山縣和也
    • Organizer
      第62回日本糖尿病学会年次学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Regulation of aging-related diseases by sirtuin 7 (SIRT7)2019

    • Author(s)
      Kazuya Yamagata
    • Organizer
      France-Japan Symposium. Implications of senescence in age related disorders: Towards healthy aging.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 脱アセチル化酵素SIRT7によるNF-kB p65の核外輸送制御メカニズムの解明2019

    • Author(s)
      佐藤叔史、Sobuz Shihab U.、吉澤達也、Fazlul Karim、小野勝彦、澤智裕、宮本洋一、岡正啓、山縣和也
    • Organizer
      第42回日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 低酸素ストレスはBhlhe40-Mafa経路を介してインスリン分泌不全を誘導する2019

    • Author(s)
      津山友徳、佐藤叔史、吉澤達也、松岡孝昭、山縣和也
    • Organizer
      第42回日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Remarks] 熊本大学大学院生命科学研究部病態生化学講座

    • URL

      https://www.kumamoto-medbiochem.com/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 熊本大学大学院生命科学研究部病態生化学講座

    • URL

      http://srv02.medic.kumamoto-u.ac.jp/dept/biochem2/biochem2.html

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

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