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Elucidation of the pathogenesis of thrombosis caused by abnormal prothrombin with thrombomodulin resistance

Research Project

Project/Area Number 20K22869
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionKanazawa University

Principal Investigator

NAGAYA Satomi  金沢大学, 保健学系, 助教 (00882309)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords異常プロトロンビン / 血栓傾向 / アンチトロンビン抵抗性 / トロンボモジュリン抵抗性 / 血栓症
Outline of Research at the Start

血液凝固因子トロンビンの前駆体であるプロトロンビンに遺伝子変異を有する先天性プロトロンビン異常症は、通常は出血症状を示すが、無症状や血栓傾向となる例も存在する。トロンビンは、血管内皮細胞上に存在するトロンボモジュリンと結合することで抗血栓作用を発揮する。申請者らはトロンボモジュリンとの結合障害(TMR)を有する異常プロトロンビンに注目し、(1)培養細胞系でのTMR型異常プロトロンビンの血栓形成機構の解明、(2)マウスを用いたTMR型異常プロトロンビンの血栓症発症機序の解明を進める。本研究によって、TMRによる血栓形成機構が明らかとなり、原因不明の血栓症の診断や治療に貢献できると期待される。

Outline of Final Research Achievements

Recombinant prothrombin with asymptomatic or thrombophilic mutations among congenital prothrombin abnormalities was produced and evaluated for coagulation activity (clotting time method and chromogenic method) and antithrombin resistance (ATR), an indicator of thrombophilia. ATR was detected in R596L and E509A, which have already been reported to show ATR, and the assay system was confirmed. In the asymptomatic abnormal prothrombin identified by the applicants, R431H had a mild ATR and M380T showed little ATR. We will continue to evaluate ATR using Biacore, detect thrombomodulin resistance (TMR), and elucidate the mechanism by which compound heterozygotes of M380T and R431H become asymptomatic.

Academic Significance and Societal Importance of the Research Achievements

本研究では、異常プロトロンビンのアンチトロンビン抵抗性 (ATR) に加え、トロンボモジュリン抵抗性 (TMR)による血栓傾向に着目した。申請者らが同定した複合ヘテロ接合体症例は出血も血栓も呈さない無症候性であり、そのメカニズムの解明を試みた。M380TおよびR431Hは凝固活性の低下 (出血傾向)、アンチトロンビン抵抗性 (ATR) は軽度~なし (血栓傾向軽度) と発端者は出血症状を呈しうる結果であり、TMRまたはプロテインCとの結合障害など、ATR以外の血栓傾向を有している可能性が示唆された。これらを解明することで新たな血栓性素因の発見や新規治療薬の開発につながる可能性がある。

Report

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

    (11 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (4 results) Book (1 results)

  • [Journal Article] Effect on Plasma Protein S Activity in Patients Receiving the Factor Xa Inhibitors2022

    • Author(s)
      Nagaya S, Terakami T, Hayashi K,Furusho H, Fujino N, Kato T, Asakura H, Morishita E
    • Journal Title

      Journal of Atherosclerosis and Thrombosis

      Volume: 29 Issue: 7 Pages: 1059-1068

    • DOI

      10.5551/jat.62951

    • NAID

      130008069021

    • ISSN
      1340-3478, 1880-3873
    • Year and Date
      2022-07-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] First report of inherited protein S deficiency caused by paternal <I>PROS1</I> mosaicism2021

    • Author(s)
      Nagaya Satomi、Maruyama Keiko、Watanabe Atsushi、Meguro-Horike Makiko、Imai Yuta、Hiroshima Yuki、Horike Shin-Ichi、Kokame Koichi、Morishita Eriko
    • Journal Title

      Haematologica

      Volume: 107 Issue: 1 Pages: 330-333

    • DOI

      10.3324/haematol.2021.278527

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Case of Treatment With Dabigatran for Cerebral Venous Thrombosis Caused by Hereditary Protein C Deficiency2021

    • Author(s)
      Fukushima T, Shimomura Y, Nagaya S, Morishita E, Kawakami O
    • Journal Title

      Cureus

      Volume: 13

    • DOI

      10.7759/cureus.15473

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Protein C Gene Mutation in an Older Adult Patient with Clostridium perfringens Septicemia-Related Visceral Vein Thrombosis2021

    • Author(s)
      Kanosue K, Nagaya S, Morishita E, Yamanishi M, Imashuku S
    • Journal Title

      TH open

      Volume: 5 Issue: 02 Pages: 171-173

    • DOI

      10.1055/s-0041-1728664

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Optimal Sample Processing Conditions for Accurate Measurement of Protein S Activity2021

    • Author(s)
      Nagaya S, Araiso Y, Yamaguchi K, Omote Y, Matsui A, Asakura H, Morishita E
    • Journal Title

      Annals of Clinical & Laboratory Science

      Volume: 51 Pages: 206-212

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of Optimal Sample Processing Conditions for Accurate Measurement of Protein S Activity.2021

    • Author(s)
      Nagaya S, Araiso Y, Yamaguchi K, Omote Y, Matsui A, Asakura H, Morishita E
    • Journal Title

      Ann Clin Lab Sci

      Volume: 51 Pages: 3-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 父性モザイク遺伝性プロテインS欠乏症の1家系2021

    • Author(s)
      長屋聡美、丸山慶子、渡邉淳、目黒牧子、廣島由紀、堀家慎一、小亀浩市、朝倉英策、森下英理子
    • Organizer
      第39回日本血液学会北陸地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] COVID-19関連凝固異常2021

    • Author(s)
      長屋聡美、木村英晴、堀内久徳、浦野哲盟、森下英理子
    • Organizer
      第16回日本血栓止血学会学術集会標準化委員会シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 先天性プロテインS欠乏症およびプロテインS活性測定に影響する要因の検討2020

    • Author(s)
      長屋聡美, 森下英理子
    • Organizer
      第42回日本血栓止血学会学術集会臨床検査シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] プロテインS活性測定に影響する要因の検討2020

    • Author(s)
      長屋聡美, 山口孝一, 冨樫朋貴, 荒磯裕平, 森広太朗, 花村美帆, 今井裕太, 關谷暁子, 朝倉英策, 森下英理子
    • Organizer
      第21回日本検査血液学会学術集会
    • Related Report
      2020 Research-status Report
  • [Book] モデル動物の作製と利用-循環器疾患2021 上巻:DICモデル2021

    • Author(s)
      長屋聡美、森下英理子
    • Total Pages
      7
    • Publisher
      株式会社 エル・アイ・シー
    • ISBN
      9784900487581
    • Related Report
      2021 Annual Research Report

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Published: 2020-09-29   Modified: 2023-01-30  

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