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Novel mechanisms of antiphospholipid antibody syndrome targeting intracellular metabolism.

Research Project

Project/Area Number 22K20752
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0803:Pathology, infection/immunology, and related fields
Research InstitutionHokkaido University

Principal Investigator

Hisada Ryo  北海道大学, 医学研究院, 助教 (00832370)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsAPS / Monocyte / Metabolic pathway / 抗リン脂質抗体症候群
Outline of Research at the Start

抗リン脂質抗体症候群(APS) は、抗リン脂質抗体(aPL)と呼ばれる自己抗体が産生され、動静脈血栓症、習慣性流産などを引き起こす自己免疫疾患である。現在根本的な治療法は無く、抗血栓薬による対症療法が治療の主体となっている。APSの血栓形成では単球の活性化が重要と考えられているが、その病態については依然不明な点が多い。本研究ではAPSの単球活性化に関わる細胞内代謝と分子遺伝機構を解明することで、APSの新たな治療ターゲットを同定する。

Outline of Final Research Achievements

A new mechanism of monocyte activation by antiphospholipid antibodies (aPL) focused on intracellular metabolism. Using a human monocyte cell line, phosphatidylserine-dependent anti-prothrombin antibodies were added in vitro and intracellular metabolism was measured using a seahorse analyzer, which revealed a specific metabolic pathway that was significantly enhanced. For functional analysis, drugs that inhibited the specific metabolic pathway were used, and dose-dependently suppressed the expression of tissue factor, a marker of monocyte activation. This study suggests that stimulation with aPL may alter intracellular metabolism and activate monocytes. Intracellular metabolism may be a new therapeutic target in antiphospholipid antibody syndrome.

Academic Significance and Societal Importance of the Research Achievements

本研究により、抗リン脂質抗体による刺激は単球の細胞内代謝を変動させ活性化をきたしている可能性が示唆された。現在特異的な治療が無く、抗血栓療法による対症療法に留まっている抗リン脂質抗体症候群において、細胞内代謝は新たな治療標的となる可能性がある。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report

URL: 

Published: 2022-09-01   Modified: 2025-01-30  

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