• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Identification of Factors Responsible for Liver Fibrosis Focusing on Secretory Pathways and Development of Novel Therapeutic Agents

Research Project

Project/Area Number 19K22612
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionAkita University

Principal Investigator

Saito Kota  秋田大学, 医学系研究科, 教授 (60549632)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords分泌 / 肝線維化 / コラーゲン
Outline of Research at the Start

肝線維化に対する根本的な治療法は確立しておらず、肝線維化を直接阻害する治療薬の開発が期待されている。肝線維化の標的として、肝星細胞は重要である。肝星細胞は、炎症性サイトカインによって活性化されI型コラーゲンの分泌を異常亢進し、線維化の主要因となる。申請者は、肝星細胞活性化時の分泌経路の変化に着目し、未同定の肝線維化責任因子の輸送を阻害することで肝線維化マーカーの発現を抑制できることを明らかにしている。 そこで申請者は、分泌経路によって活性化される「肝線維化責任因子」を同定し、肝線維化を抑制する新規標的薬を開発することを目的とする。

Outline of Final Research Achievements

In this study, we have examined various methods for selecting siRNA oligos for mice and targeting siRNA to the liver in order to investigate the inhibitory effect of siRNA on liver fibrosis in mice. In addition, we have completed the examination of conditions for tissue staining of vesicle trafficking-related factors and the creation of a mouse model of liver fibrosis. Based on these results, we would like to verify the inhibitory effect of siRNA on liver fibrosis by suppressing the expression of various vesicular trafficking-related factors in mice.

Academic Significance and Societal Importance of the Research Achievements

肝線維化はアルコール、肥満等の生活習慣病的要因により引き起こされ、肝硬変・肝癌へと進行するが、線維化に対する根本的な治療法は確立していない。今後非アルコール性脂肪肝炎(NASH)が慢性肝炎の主因になることが予想されることから、ウイルスを標的とせず肝線維化を直接阻害する治療薬の開発がますます期待されている。研究代表者は分泌経路に着目し、種々の分泌経路関連因子の発現抑制によって肝線維化を抑制できる可能性を提示しており、本研究を継続することで、その抑制効果の検証を行いたい。

Report

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

    (24 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (1 results) Remarks (3 results)

  • [Int'l Joint Research] University of Oslo(ノルウェー)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Ludwig-Maximilians-Universitat(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Warsaw University of Life Sciences(ポーランド)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Lund University(スウェーデン)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Secretion from the endoplasmic reticulum is regulated in a cell cycle-dependent manner2021

    • Author(s)
      前田 深春、齋藤 康太
    • Journal Title

      秋田医学

      Volume: 48 Issue: 1 Pages: 1-7

    • DOI

      10.20569/00005734

    • NAID

      120007118627

    • URL

      https://air.repo.nii.ac.jp/records/5412

    • Year and Date
      2021-06-30
    • Related Report
      2021 Annual Research Report
  • [Journal Article] Mitotic ER Exit Site Disassembly and Reassembly Are Regulated by the Phosphorylation Status of TANGO12020

    • Author(s)
      Maeda Miharu、Komatsu Yukie、Saito Kota
    • Journal Title

      Developmental Cell

      Volume: 55 Issue: 2 Pages: 237-250.e5

    • DOI

      10.1016/j.devcel.2020.07.017

    • NAID

      130008001624

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mitotic ER exit site dynamics: insights into blockade of secretion from the ER during mitosis2020

    • Author(s)
      Maeda Miharu、Komatsu Yukie、Saito Kota
    • Journal Title

      Molecular & Cellular Oncology

      Volume: 7 Issue: 6 Pages: 1832420-1832420

    • DOI

      10.1080/23723556.2020.1832420

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] LTK is an ER-resident receptor tyrosine kinase that regulates secretion2019

    • Author(s)
      Centonze Federica G.、Reiterer Veronika、Nalbach Karsten、Saito Kota、Pawlowski Krzysztof、Behrends Christian、Farhan Hesso
    • Journal Title

      Journal of Cell Biology

      Volume: 218 Issue: 8 Pages: 2470-2480

    • DOI

      10.1083/jcb.201903068

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Not just a cargo receptor for large cargoes; an emerging role of TANGO1 as an organizer of ER exit sites2019

    • Author(s)
      Saito Kota、Maeda Miharu
    • Journal Title

      The Journal of Biochemistry

      Volume: 166 Issue: 2 Pages: 115-119

    • DOI

      10.1093/jb/mvz036

    • NAID

      40021974856

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] COPII proteins exhibit distinct subdomains within each ER exit site for executing their functions2019

    • Author(s)
      Maeda Miharu、Kurokawa Kazuo、Katada Toshiaki、Nakano Akihiko、Saito Kota
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 7346-7346

    • DOI

      10.1038/s41598-019-43813-3

    • NAID

      120007169371

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 小胞体上の分泌ゾーンERESの局在決定機構2022

    • Author(s)
      齋藤 康太
    • Organizer
      新学術領域研究「オルガネラ・ゾーン」班会議
    • Related Report
      2021 Annual Research Report
  • [Presentation] 小胞体上の分泌ゾーンERESの局在決定機構2021

    • Author(s)
      齋藤 康太
    • Organizer
      新学術領域研究「オルガネラ・ゾーン」online班会議
    • Related Report
      2021 Annual Research Report
  • [Presentation] 細胞分裂期のER exit siteの崩壊と再形成はTANGO1のリン酸化状態により制御される2021

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      第73回日本細胞生物学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 細胞周期依存的なTANGO1のリン酸化による分泌制御機構2021

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      日本生化学会東北支部 第87回 例会・シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 細胞分裂期における分泌停止メカニズムの解明2021

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Mitotic ER exit site dissociation and reassembly are regulated by phosphorylation status of TANGO12019

    • Author(s)
      Maeda,M., Komatsu, Y., Saito, K.
    • Organizer
      Gordon Research Conferences, Molecular Membrane Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] cTAGE5 acts as a Sar1 GTPase regulator for collagen export2019

    • Author(s)
      Maeda, M.,Sasaki,N., Shiraiwa, M., Yorimitsu, T., Sato, K., Katada, T., Saito, K.
    • Organizer
      Gordon Research Conferences, Molecular Membrane Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 巨大分子の分泌機構2019

    • Author(s)
      齋藤 康太
    • Organizer
      第61回日本先天代謝異常学会総会・第17回アジア先天代謝異常症シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 細胞周期に応じたリン酸化による分泌調節機構2019

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      第70回日本薬理学会北部会
    • Related Report
      2019 Research-status Report
  • [Presentation] 細胞周期に応じた小胞体出芽ゾーン「ERES」の崩壊と再形成の分子機構2019

    • Author(s)
      齋藤 康太
    • Organizer
      第3回オルガネラ・ゾーン研究会
    • Related Report
      2019 Research-status Report
  • [Book] クーパー分子細胞生物学 第8版2022

    • Author(s)
      G. M. Cooper、須藤 和夫、堅田 利明、榎森 康文、足立 博之、富重 道雄、齋藤 康太
    • Total Pages
      568
    • Publisher
      東京化学同人
    • ISBN
      9784807920259
    • Related Report
      2021 Annual Research Report
  • [Remarks]

    • URL

      https://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza/yakuri.html

    • Related Report
      2021 Annual Research Report
  • [Remarks]

    • URL

      http://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza/yakuri.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 秋田大学大学院医学系研究科 情報制御学・実験治療学講座

    • URL

      https://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza.php?koza=yakuri

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi