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Elucidation of role and mechanism of untranslated region on genome in arrhythmia syndrome

Research Project

Project/Area Number 15K19373
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Cardiovascular medicine
Research InstitutionNiigata University

Principal Investigator

Nobue Yagihara  新潟大学, 医歯学総合病院, 特任助教 (70750347)

Research Collaborator Watanabe Hiroshi  
Minamino Tohru  
Sato Akinori  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords遺伝子検査 / 非翻訳領域 / 不整脈 / イオンチャネル / 次世代シークエンス / 不整脈症候群 / 遺伝子変異 / プロモーター / 遺伝子異常
Outline of Final Research Achievements

Genetic analysis is usually performed in the coding region and the contiguous sequence. However, patients with arrhythmia syndrome who identified some mutations in causal genes are rare. In a recent study, about 70~80% of the genome was shown to have biochemical functions. In the present study, we resequenced the promoter region of SCN5A, which encodes the cardiac sodium channel alpha subunit, in 1298 patients with various arrhythmias. Functional analysis of the promoter activity of identified variants decreased compared with the wild-type sequences.

Academic Significance and Societal Importance of the Research Achievements

従来、不整脈疾患の遺伝子検索は原因遺伝子のタンパク翻訳領域およびそれに隣接した非翻訳領域の一部に限局して施行されることが多かった。しかし、これらの領域に変異が同定されるのは、最も多いQT延長症候群でも70%程度、日本人を含めたアジア人に多く見られるBrugada症候群では20-30%程度であり、十分とはいえない。本研究では、原因遺伝子のプロモーター領域という、タンパク発現に大きく関与すると考えられる配列における変異を同定し、その機能解析を行うことにより、これまでの検査法では異常が同定されなかった症例においても不整脈発症の機序を解明する一助となると考えられる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Variants in the SCN5A Promoter Associated With Various Arrhythmia Phenotypes.2016

    • Author(s)
      Yagihara N,Minamino T,33名中28番
    • Journal Title

      J Am Heart Assoc.

      Volume: 19 Issue: 9 Pages: 644-650

    • DOI

      10.1161/jaha.116.003644

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Identification of mutations in causative genes for cardiomyopathies in patients with arrhythmia syndromes and structurally normal heart2018

    • Author(s)
      八木原伸江
    • Organizer
      第82回日本循環器学会学術総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Variants in the SCN5A Promoter Associated With Various Arrhythmia Phenotypes2017

    • Author(s)
      八木原伸江
    • Organizer
      第64回日本不整脈心電学会年次集会
    • Related Report
      2017 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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