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2022 Fiscal Year Final Research Report

Activation mechanism of 12-Lypoxigenase in thrombus formation

Research Project

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Project/Area Number 19K08853
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionNational Center for Geriatrics and Gerontology

Principal Investigator

Katsumi Akira  国立研究開発法人国立長寿医療研究センター, 病院, 部長 (80378025)

Co-Investigator(Kenkyū-buntansha) 天野 睦紀  名古屋大学, 医学系研究科, 准教授 (90304170)
Project Period (FY) 2019-04-01 – 2023-03-31
Keywordsアラキドン酸 / small GTPase / エフェクター
Outline of Final Research Achievements

Lipoxygenase (LOX) is a multifunctional protein involved in atherosclerosis, platelet aggregation, chronic inflammation, and cancer development. We established an affinity chromatography system using Rho family GTPases as bait followed by mass spectrometry (LC/MS-MS) and identified several proteins that bind specifically to the active form of Rho GTPase. Among them, 12-LOX was confirmed to bind to active Rho GTPases. There was no direct binding between the two, indicating that 12-LOX binds to active Rho GTPases via their effectors, and experiments with GTPase inhibitors revealed activation-dependent binding of 12-LOX.

Free Research Field

血液内科学

Academic Significance and Societal Importance of the Research Achievements

アラキドン酸リポキシゲナーゼ(LOX)とその下流の脂質メディエーターは動脈硬化、血小板凝集、慢性炎症、がんの進展などに関与する多機能蛋白である。LOX下流の脂質メディエーターについては活発に研究が行われているが、上流の制御メカニズムについては殆ど報告がなされていない。当該研究ではALOX上流の制御メカニズムを解明することで、血管をターゲットにした治療応用の基盤としたい。

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Published: 2024-01-30  

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