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Research aimed at elucidating the pathophysiology that causes the complication of Takayasu's arteritis and Crohn's disease and applying it to treatment

Research Project

Project/Area Number 18K15841
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53020:Cardiology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Tamura Natsuko  東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (70815597)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords高安動脈炎 / MLX遺伝子 / 褐色脂肪細胞 / クローン病 / MLX / インフラマソーム / オートファジー
Outline of Final Research Achievements

In this study, we created knock-in mice of the mutant MLX gene revealed by genome-wide association study of patients with Takayasu's arteritis, and aimed to elucidate the pathophysiology by comparing with wild-type mice. Knock-in mice were generated using the CRISPR / Cas9 system. The vascular cross-sectional area of mutant MLX knock-in mice not stimulated by HE staining was significantly increased as compared with wild-type mice of the same week age. The aortic wall was thickened, infiltration of lymphocytes and rupture of elastic fibers were observed, and perivascular lymphadenopathy was observed. It was also characterized by an increase in brown adipose tissue around the aorta, an enlargement of the aortic valve tissue, a thickening of the Peyer's patch of the small intestine, and an enlargement of the smooth muscle of the large intestine.

Academic Significance and Societal Importance of the Research Achievements

高安動脈炎は原因不明の大型血管に発症する血管炎で、主に若年から中年の女性に多い本疾患はアジア人に多いという特徴もあることから、遺伝性疾患が疑われてきた。近年日本で行われたゲノムワイド関連解析で見出された疾患関連遺伝子である、変異型MLX遺伝子を持つマウスを作成し野生型マウスと比較したところ、様々な特徴を捉えることができた。今回の研究成果を足掛かりにしてさらに詳細な病態解明が可能になると考えている。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2018

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

  • [Journal Article] Single-Nucleotide Polymorphism of the MLX Gene Is Associated With Takayasu Arteritis2018

    • Author(s)
      Tamura Natsuko、Maejima Yasuhiro、Matsumura Takayoshi、Vega Rick B.、Amiya Eisuke、Ito Yusuke、Shiheido-Watanabe Yuka、Ashikaga Takashi、Komuro Issei、Kelly Daniel P.、Hirao Kenzo、Isobe Mitsuaki
    • Journal Title

      Circulation: Genomic and Precision Medicine

      Volume: 11 Issue: 10

    • DOI

      10.1161/circgen.118.002296

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Apolipoprotein A-1 is a candidate of novel biomarkers of Takayasu Arteritis2018

    • Author(s)
      田村 夏子
    • Organizer
      第83回 日本循環器学会学術集会
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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