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Identifying the genes responsible for individual differences in increased vascular permeability during sepsis.

Research Project

Project/Area Number 19K18320
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionKyoto University

Principal Investigator

Seo Hideya  京都大学, 医学研究科, 助教 (40782652)

Project Period (FY) 2020-03-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsICU-AW / β遮断薬 / 敗血症 / 血管透過性 / 個体差 / ICUーAW / 個人差 / 個別医療 / 遺伝的背景
Outline of Research at the Start

敗血症の致死率は依然高いままでその重症化の病態解明は進んでおらず、根治的治療法も未だ確立されていない。
そこで本研究は、新たなアプローチで遺伝的背景に基づく敗血症増悪因子(血管透過性亢進を亢進の原因遺伝子)を明らかにすることで「敗血症予後における個人差の原因遺伝子の同定が可能である」とのコンセプトを示す。本コンセプトの証明は今後の敗血症治療開発に大きな影響を与えうる。

Outline of Final Research Achievements

Due to the instability of the experimental system, the initial plan was modified, and the research focus was changed from vascular permeability caused by sepsis to ICU-acquired weakness (ICU-AW) caused by sepsis. With a focus on the activation of the muscle-specific Ubiquitin-Proteasome System (UPS), a primary pathology in ICU-AW, we identified genes that could be responsible for individual differences by comparing the expression of genes between UPS low-activation and high-activation groups. Furthermore, through pathway analysis, we narrowed down the pathological factors influencing disease progression, while simultaneously obtaining valuable data that could contribute to the development of preventive and therapeutic measures by elucidating mechanisms exacerbating prognosis. This study successfully demonstrates the concept that identification of causal mechanisms is feasible through exploring individual differences during sepsis.

Academic Significance and Societal Importance of the Research Achievements

ICU-AWの病態の詳細は未だ不明であり、効果的な治療や予防法がないことから、現代の集中治療が解決すべき大きな課題であった。本研究はICU-AW研究を加速させうる基礎データを提供することに成功した。
また、これまでの研究は個体によるばらつきが少なくなる条件に限定して実験を行っていた。この”ばらつき”にこそ病態を解明するうえでの重要な情報が隠されており、病勢の個体差利用した本研究では病態野探索のみならず、臨床的に介入可能な予防法、治療法を提示できることを示した。本研究手法は停滞する敗血症研究にとってブレイクスルーとなるであろう。

Report

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

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Published: 2019-04-18   Modified: 2025-01-30  

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