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The development of nucleic acid therapeutic against sepsis targeting splenic macrophage

Research Project

Project/Area Number 18K19562
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 InstitutionNagoya University

Principal Investigator

Yasuda Yoshinari  名古屋大学, 医学系研究科, 寄附講座准教授 (60432259)

Co-Investigator(Kenkyū-buntansha) 加藤 規利  名古屋大学, 医学部附属病院, 病院講師 (90716052)
Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
KeywordsマイクロRNA / 人工核酸 / 敗血症 / 脾臓 / miRNA
Outline of Final Research Achievements

We have been involved in nucleic acid therapeutics using miR-146a expression vector for severe sepsis mice model. When introduced miR-146a expression vector with PEI, they are transfected into splenic macrophages and suppress cytokine storm and contribute to improve better survival. This time, we injected mature miR-146a directly into mice spleen. It improved organ damage but did not survival rate. In vitro study, we confirm our artificial nucleic acid suppress cytokine production. Now we are developing better therapeutic platform.

Academic Significance and Societal Importance of the Research Achievements

敗血症は致死率が高く、従来からの補液による循環の維持、抗生剤治療を超える治療法の開発が遅れ、救命率の改善が停滞している疾患である。敗血症の病態を見直し、新しい切り口からの治療法開発が望まれる状況にあるが、我々はかねてより、敗血症におけるToll like receptor (TLR)を介したNF-kBの活性化に着目しており、このシグナルを負に抑制する治療法開発に取り組んできた。
核酸医薬開発は細胞治療と比較し、安価で一つのプラットフォームの開発で様々な疾患に対応できるというメリットが有る。今回マイクロRNAベースの核酸医薬開発で、今までとは異なる切り口で敗血症治療が進む可能性が示された。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (1 results)

All 2019

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

  • [Journal Article] miR-146a targeted to splenic macrophages prevents sepsis-induced multiple organ injury.2019

    • Author(s)
      Funahashi Y, Kato N, Masuda T, Nishio F, Kitai H, Ishimoto T, Kosugi T, Tsuboi N, Matsuda N, Maruyama S, Kadomatsu K.
    • Journal Title

      Lab. Invest.

      Volume: - Issue: 8 Pages: 1130-1142

    • DOI

      10.1038/s41374-019-0190-4

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research

URL: 

Published: 2018-07-25   Modified: 2021-02-19  

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