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Understanding the biological defense system by absorption/excretion balance of dietary lipids and its application to disease treatment

Research Project

Project/Area Number 20H04100
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionThe University of Tokyo

Principal Investigator

Yamanashi Yoshihide  東京大学, 医学部附属病院, 講師 (20582018)

Co-Investigator(Kenkyū-buntansha) 徳田 慶太  順天堂大学, 健康データサイエンス学部, 講師 (50762176)
豊田 優  東京大学, 医学部附属病院, 届出研究員 (80650340)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Keywords脂質トランスポーター / 消化管吸収 / 胆汁排泄 / 非アルコール性脂肪性肝疾患 / トランスレーショナルリサーチ
Outline of Research at the Start

消化管や肝臓に発現している脂質トランスポーターの生理的基質を網羅的かつ定量的に探索・同定することで、脂質トランスポーターの活性バランスに基づいた食事由来脂質の吸収/排泄制御機構の体系的理解を目指す。また、新たに見出された基質が、非アルコール性脂肪性肝疾患(NAFLD)の発症・進行に及ぼす影響を明らかにすることで、脂質の体内動態と生理活性を考慮した病態生理学的に影響力の大きい新たなNAFLD治療標的脂質を見出す。

Outline of Final Research Achievements

The purpose of this study was to clarify the absorption/excretion balance of dietary lipids due to differences in the activities of NPC1L1, a cholesterol importer, and ABCG5/G8, a cholesterol exporter, and the pathophysiological significance of the regulation of this balance in the onset and/or progression of NAFLD. In vitro uptake assays using NPC1L1-overexpressing cells and in vivo experiments using NPC1L1 gene-modified mice have revealed that NPC1L1 is involved in the intestinal absorption and biliary reabsorption of various kinds of oxysterols. In addition, specific oxysterols regulated by NPC1L1 were found to affect the progression of NAFLD.

Academic Significance and Societal Importance of the Research Achievements

本研究により、これまで未解明であったいくつかの食事由来脂質の消化管吸収および胆汁排泄経路について、コレステロール輸送体が関わることが明らかとなり、生理学的・栄養学的に重要な成果が得られた。また、NAFLDの発症・進行に関わりうる新たな脂質を見出すことにも成功した。この発見は、将来、NAFLDの新たな予防法や治療法の開発ならびに、NAFLDの発症・進行リスクの新規バイオマーカーの開発にも繋がる可能性を秘めており、基礎のみならず臨床的にも重要な成果が得られた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 6 results)

  • [Journal Article] ABCG5 and ABCG8 Are Involved in Vitamin K Transport2023

    • Author(s)
      Matsuo Michinori、Ogata Yutaka、Yamanashi Yoshihide、Takada Tappei
    • Journal Title

      Nutrients

      Volume: 15 Issue: 4 Pages: 998-998

    • DOI

      10.3390/nu15040998

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hepatic Niemann-Pick C1-Like 1 exacerbates non-alcoholic fatty liver disease by re-absorbing specific biliary oxysterols.2022

    • Author(s)
      Yamanashi Y, Takada T, Tanaka Y, Ogata Y, Toyoda Y, Ito SM, Kitani, Oshida N, Okada K, Shoda J, Suzuki H.
    • Journal Title

      Biomed. Pharmacother.

      Volume: 156 Pages: 113877-113877

    • DOI

      10.1016/j.biopha.2022.113877

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Increase of serum uric acid levels associated with APOE ε2 haplotype: a clinico-genetic investigation and in vivo approach2021

    • Author(s)
      Ogura Masatsune、Toyoda Yu、Sakiyama Masayuki、Kawamura Yusuke、Nakayama Akiyoshi、et al.
    • Journal Title

      Human Cell

      Volume: 34 Issue: 6 Pages: 1727-1733

    • DOI

      10.1007/s13577-021-00609-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NPC1L1 Facilitates Sphingomyelin Absorption and Regulates Diet-Induced Production of VLDL/LDL-associated S1P2020

    • Author(s)
      Yamanashi Yoshihide、Takada Tappei、Yamamoto Hideaki、Suzuki Hiroshi
    • Journal Title

      Nutrients

      Volume: 12 Issue: 9 Pages: 2641-2641

    • DOI

      10.3390/nu12092641

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Niemann-Pick C1-Like 1による非アルコール性脂肪肝の発症・増悪に関わる酸化ステロールの胆汁排泄制御2023

    • Author(s)
      山梨 義英、高田 龍平、田中 悠介、緒方 裕、豊田 優、伊藤(松岡) 紗代、木谷 真依子、押田 夏海、岡田 浩介、正田 純一、鈴木 洋史
    • Organizer
      第55回日本動脈硬化学会総会・学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Hepatic NPC1L1 exacerbates NAFLD by suppressing biliary excretion of oxysterols2023

    • Author(s)
      Yamanashi Y, Tanaka Y, Ogata Y, Toyoda Y, Ito S, Kitani M, Oshida N, Okada K, Shoda J, Suzuki H, Takada T
    • Organizer
      2023 International Joint Meetings of the 23rd International Conference on Cytochrome P450 and the 38th Annual Meeting of the Japanese Society for the Study of Xenobiotics in Shizuoka
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コレステロール吸収輸送体NPC1L1の病態生理学的役割2023

    • Author(s)
      山梨 義英、緒方 裕、豊田 優、伊藤 紗代、高田 龍平
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 肝臓のNPC1L1による酸化ステロールの胆汁排泄抑制と非アルコール性脂肪肝の増悪2023

    • Author(s)
      山梨義英、高田龍平、田中悠介、緒方裕、豊田優、伊藤紗代、木谷真依子、押田夏海、岡田浩介、正田純一、鈴木洋史
    • Organizer
      日本薬学会 第143年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] コレステロールトランスポーターによる脂溶性物質の体内動態制御と病態生理学的意義2021

    • Author(s)
      山梨義英、高田龍平、鈴木洋史
    • Organizer
      第75回 日本栄養・食糧学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 健康・疾患治療に影響する脂質の体内での動きとその制御メカニズム2021

    • Author(s)
      山梨義英
    • Organizer
      第17回 摂大農学セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] NPC1L1によるスフィンゴミエリンの消化管吸収とVLDL/LDL-S1Pの産生制御2021

    • Author(s)
      山梨義英、高田龍平、山本英明、鈴木洋史
    • Organizer
      日本薬学会第141年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 新規NAFLD動物モデル:ヒトNPC1L1肝発現マウスを用いた脂肪肝増悪機序に関する研究2020

    • Author(s)
      豊田優、高田龍平、梅澤雅和、山梨義英、武田健、鈴木洋史
    • Organizer
      第47回日本毒性学会学術年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 肝臓のNPC1L1依存的な高脂肪食性脂肪肝とVLDL分泌の低下2020

    • Author(s)
      豊田 優, 高田 龍平, 山梨 義英, 鈴木 洋史
    • Organizer
      第93回日本生化学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 消化吸収とトランスポーター 脂溶性ビタミンの消化吸収とトランスポーター2020

    • Author(s)
      高田 龍平, 山梨 義英, 伊藤 紗代[松岡], 豊田 優, 山本 武人, 鈴木 洋史
    • Organizer
      第51回日本消化吸収学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Effect of co-administration of warfarin and prednisolone on anticoagulant therapy and its possible mechanism in relation to the Niemann-Pick C1-like 1-mediated pathway2020

    • Author(s)
      Sayo M Ito, Yoshihide Yamanashi, Tappei Takada, Hiroshi Suzuki
    • Organizer
      7th FIP Pharmaceutical Sciences World Congress (PSWC2020 Virtual)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ezetimibe-mediated prevention and recovery of hepatic NPC1L1-dependent dietary steatosis in mice2020

    • Author(s)
      Tappei Takada, Yu Toyoda, Yoshihide Yamanashi, Hiroshi Suzuki
    • Organizer
      7th FIP Pharmaceutical Sciences World Congress (PSWC2020 Virtual)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ABCG2 is a physiological exporter of indoxyl sulfate, and its dysfunction accelerates the progression of chronic kidney disease2020

    • Author(s)
      Takehito Yamamoto, Tappei Takada, Jeng Kae Tan, Hiroshi Miyata, Yoshihide Yamanashi, Yu Toyoda, Hiroshi Suzuki
    • Organizer
      7th FIP Pharmaceutical Sciences World Congress (PSWC2020 Virtual)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脂肪肝増悪因子としてのコレステロールトランスポーターNPC1L1に関する研究2020

    • Author(s)
      高田 龍平, 豊田 優, 山梨 義英, 鈴木 洋史
    • Organizer
      生理研研究会『上皮膜輸送の多様性・調和機構を基盤とする異分野融合研究の創出』
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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