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Elucidation of the pathology concerning immunosupression in severe sesis, and control by microRNA derived from myeloid-derived suppressor cell.

Research Project

Project/Area Number 20K17824
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55050:Anesthesiology-related
Research InstitutionKansai Medical University

Principal Investigator

OHIRA Sayaka  関西医科大学, 医学部, 助教 (90786724)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords敗血症 / microRNA / 遺伝子治療
Outline of Research at the Start

申請者らは、敗血症病態の中で、特に高血糖時において、単球系細胞が貪食能低下や細胞死を起こし、その細胞内情報伝達系としての小胞体ストレスの関与、またmicroRNA (miRNA) による制御に関して報告してきた。様々な病態制御に関与しているmiRNAが及ぼす敗血症病態における骨髄由来(免疫)抑制細胞 (MDSCs) の分化、機能への影響に注目して、動物実験及び臨床研究の両面から検討し、敗血症における骨髄由来抑制細胞(MDSCs)の役割と、今後の遺伝子治療の可能性を検討することを目的とする。

Outline of Final Research Achievements

After isolation of human myeloid-derived suppressor cells (CD11b+CD14-CD33+ cells) with magnetic beads, we have conducted the experiment evaluating the changes in mRNA and miRNA expression in cell culture study with LPS application and different glucose concentration.
We have conducted the comprehensive analysis of mRNA and miRNA by next generation sequencing with outsourcing. Further, we have conducted the pathway analysis using RNAseq data.

Academic Significance and Societal Importance of the Research Achievements

骨髄由来抑制細胞(MDSCs)は多くの免疫抑制をもたらす細胞群の中で,癌患者における免疫抑制の主要な部分を担うとして重要視されてきた。MDSCは癌や炎症によって,本来骨髄中に存在する細胞が癌局所や全身の血液循環に出現する未熟な細胞群です。もともと均一でない細胞群とされますが,この中にはgranulocytic MDSCとmonocytic MDSCが存在する。
免疫抑制が近年、敗血症病態における骨髄由来抑制細胞(MDSCs)の免疫抑制作用に注目がされているが、次世代シーケンサーを用いて、トランスクリプトーム解析(mRNA, miRNA)を、網羅的に解析した研究は無い。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Impact of Permissive Hypoxia and Hyperoxia Avoidance on Clinical Outcomes in Septic Patients Receiving Mechanical Ventilation: A Retrospective Single-Center Study2021

    • Author(s)
      Nishimoto K, Umegaki T, Ohira S, Soeda T, Anada N, Uba T, Shoji T, Kusunoki M, Nakajima Y, Kamibayashi T.
    • Journal Title

      BioMed research international

      Volume: 2021:7332027 Issue: 1 Pages: 7332027-7332027

    • DOI

      10.1155/2021/7332027

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Factors associated with the need for airway intervention immediately after extubation from general anesthesia2021

    • Author(s)
      Ohira S, Takeshita J, Tachibana K.
    • Journal Title

      Journal of clinical anesthesia

      Volume: 73:110365 Pages: 110365-110365

    • DOI

      10.1016/j.jclinane.2021.110365

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 肝臓切除術後急性心筋梗塞から心停止に至った1症例2021

    • Author(s)
      大平早也佳, 梅垣岳志, 西本浩太, 添田岳宏, 右馬猛生, 山木 壮, 中嶋康文, 上林卓彦
    • Organizer
      第48回日本集中治療医学会学術集会
    • Related Report
      2021 Research-status Report

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

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