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The genetic analysis and underlying function of the endoplasmic reticulum membrane protein targeting inherited arrhythmogenic syndromes

Research Project

Project/Area Number 20K08473
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionHiroshima University

Principal Investigator

Itoh Hideki  広島大学, 病院(医), 教授 (30402738)

Co-Investigator(Kenkyū-buntansha) 竹島 浩  京都大学, 薬学研究科, 教授 (70212024)
加藤 浩一  滋賀医科大学, 医学部, 助教 (70736983)
堀江 稔  滋賀医科大学, NCD疫学研究センター, 特任教授 (90183938)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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リアノジン受容体 / 心室細動 / シミュレーション / カルシウム / 不整脈 / 突然死 / 小胞体 / リアノジン / 特発性心室細動 / 筋小胞体 / 遺伝子
Outline of Research at the Start

基礎心疾患がないにもかかわらず致死性不整脈の出現を認める遺伝性不整脈疾患の原因は、細胞膜に存在するイオンチャネルの異常のみならず、細胞内イオンの動態に関わるチャネルやその調節蛋白の遺伝子異常が原因となることも報告されている。遺伝子変異の同定されていない遺伝性不整脈疾患患者を対象として、細胞内カルシウム動態を司る小胞体膜関連蛋白をコードする遺伝子に検索のターゲットを定め、変異遺伝子の病態解析から新規創薬につながるトランスレーショナルな研究を展開する。

Outline of Final Research Achievements

Among patients with idiopathic ventricular fibrillation, we focused on the analysis of genes corresponding to Ca dynamics. The target sequence using the next-generation sequencing failed to reveal the genetic background in our cohort. Regarding the simulation study in silico, the current through Na/Ca exchanger reduced in the submembrane while this current increased in the myoplasm. This result was similar to that of a study using iPS which had been reported in the previous article.

Academic Significance and Societal Importance of the Research Achievements

細胞内Caダイナミクスに関与すると考えられる蛋白群の遺伝子変異は同定されなかったが、今後は細胞内Caダイナミクスに関連しない遺伝子も網羅的に調べることが必要である。本疾患の治療薬を考える上で、Na/Ca交換体に対するアプローチが有用であることが示唆された。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021 2020

All Journal Article (13 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 9 results) Presentation (9 results) (of which Invited: 6 results) Book (1 results)

  • [Journal Article] Efficacy and Tolerability of Ivabradine for Cardiomyopathy in Patients with Duchenne Muscular Dystrophy2024

    • Author(s)
      Kimura K, Wakisaka A, Morita H, Nakanishi K, Daimon M, Nojima M, Itoh H, Takeda A, Kitao R, Imai T, Ikeda T, Nakajima T, Watanabe C, Furukawa T, Ohno I, Ishida C, Takeda N, Komai K
    • Journal Title

      International Heart Journal

      Volume: 65 Issue: 2 Pages: 211-217

    • DOI

      10.1536/ihj.23-563

    • ISSN
      1349-2365, 1349-3299
    • Year and Date
      2024-03-30
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical characterization of type 1 long QT syndrome caused by C-terminus Kv7.1 variants2024

    • Author(s)
      Kashiwa A, Itoh H, Makiyama T, Wada Y, Ozawa J, Kato K, Fukuyama M, Nakajima T, Ohno S, Horie M.
    • Journal Title

      Heart Rhythm

      Volume: In press Issue: 7 Pages: 1113-1120

    • DOI

      10.1016/j.hrthm.2024.02.021

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experience-based treatment strategy for cardiomyopathy of Duchenne muscular dystrophy2024

    • Author(s)
      Kimura K, Morita H, Nakanishi K, Daimon M, Nakamura A, Matsumura T, Takeda A, Itoh H, Okada T, Takeda N
    • Journal Title

      Neurological Therapeutics

      Volume: -

    • Related Report
      2023 Annual Research Report
  • [Journal Article] JCS/JHRS 2020 Guideline on Pharmacotherapy of Cardiac Arrhythmias2022

    • Author(s)
      Ono K, Iwasaki YK, Akao M, Makiyama T, Maruyama M, Miake J, Muraji S, Murata H, Morita N, Yokoshiki H, Yoshioka K, Yodogawa K, Inoue H, Okumura K, Kimura T, Tsutsui H, Shimizu W
    • Journal Title

      Circulation Journal

      Volume: 86 Issue: 11 Pages: 1790-1924

    • DOI

      10.1253/circj.CJ-20-1212

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2022-10-25
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel CACNA1C R511Q mutation, located in domain Ⅰ-Ⅱ linker, causes non-syndromic type-8 long QT syndrome2022

    • Author(s)
      Nakajima Tadashi、Kawabata-Iwakawa Reika、Tamura Shuntaro、Hasegawa Hiroshi、Kobari Takashi、Itoh Hideki、Horie Minoru、Nishiyama Masahiko、Kurabayashi Masahiko、Kaneko Yoshiaki、Ishii Hideki
    • Journal Title

      PLOS ONE

      Volume: 17 Issue: 7 Pages: e0271796-e0271796

    • DOI

      10.1371/journal.pone.0271796

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Novel CALM3 Variant Causing Calmodulinopathy With Variable Expressivity in a 4-Generation Family2022

    • Author(s)
      Kato Koichi、Isbell Holly M.、Fressart Veronique、Denjoy Isabelle、Debbiche Amal、Itoh Hideki、Poinsot Jacques、George Alfred L.、Coulombe Alain、Shea Madeline A.、Guicheney Pascale
    • Journal Title

      Circulation: Arrhythmia and Electrophysiology

      Volume: 15 Issue: 3

    • DOI

      10.1161/circep.121.010572

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Differences in Pharmaceutical Intervention Triggers for the Optimization of Medication by Patient Age: A University Hospital Study2021

    • Author(s)
      Shibata Yuuka、Itoh Hideki、Matsuo Hiroaki、Nakajima Kazue
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 44 Issue: 8 Pages: 1060-1066

    • DOI

      10.1248/bpb.b21-00143

    • NAID

      130008070531

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2021-08-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] High incidence of major bleeding with off-label use of edoxaban2021

    • Author(s)
      Fukui Rika、Hira Daiki、Kunitsu Yuki、Isono Tetsuichiro、Tabuchi Yohei、Ikuno Yoshihiro、Ueshima Satoshi、Itoh Hideki、Tanaka Toshihiro、Terada Tomohiro
    • Journal Title

      Journal of Clinical Biochemistry and Nutrition

      Volume: 69 Issue: 3 Pages: 311-316

    • DOI

      10.3164/jcbn.21-9

    • NAID

      130008110266

    • ISSN
      0912-0009, 1880-5086
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sudden death after inappropriate shocks of implantable cardioverter defibrillator in a catecholaminergic polymorphic ventricular tachycardia case with a novel RyR2 mutation2021

    • Author(s)
      Itoh Hideki、Murayama Takashi、Kurebayashi Nagomi、Ohno Seiko、Kobayashi Takuya、Fujii Yusuke、Watanabe Masaya、Ogawa Haruo、Anzai Toshihisa、Horie Minoru
    • Journal Title

      Journal of Electrocardiology

      Volume: 69 Pages: 111-118

    • DOI

      10.1016/j.jelectrocard.2021.09.015

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transethnic Genome-Wide Association Study Provides Insights in the Genetic Architecture and Heritability of Long QT Syndrome2020

    • Author(s)
      Lahrouchi N, Tadros R, Crotti L, Makiyama T et al.
    • Journal Title

      Circulation

      Volume: 142 Issue: 4 Pages: 324-338

    • DOI

      10.1161/circulationaha.120.045956

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhancing rare variant interpretation in inherited arrhythmias through quantitative analysis of consortium disease cohorts and population controls2020

    • Author(s)
      2.Walsh R, Lahrouchi N, Tadros R, Kyndt F, Glinge C, Postema PG, et al.
    • Journal Title

      Genetics in Medicine

      Volume: 23 Issue: 1 Pages: 47-58

    • DOI

      10.1038/s41436-020-00946-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cardiac conduction disorders as markers of cardiac events in myotonic dystrophy type 1.2020

    • Author(s)
      2.Itoh H, Hisamatsu T, Tamura T, Segawa K, Takahashi T, Takada H, Kuru S, Wada C, Suzuki M, Suwazono S, Sasaki S, Okumura K, Horie M, Takahashi MP, Matumura T.
    • Journal Title

      J Am Heart Assoc.

      Volume: 9 Issue: 17

    • DOI

      10.1161/jaha.119.015709

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 遺伝性不整脈疾患における筋小胞体Caシグナリング2020

    • Author(s)
      伊藤英樹、堀江 稔、竹島 浩
    • Journal Title

      Bio Clinica

      Volume: 35 Pages: 76-79

    • Related Report
      2020 Research-status Report
  • [Presentation] Genetic Aspects of Drug-induced Long QT syndrome: Ion Channel Genes and Race-Specific Variants of CYP genes2023

    • Author(s)
      伊藤英樹, 加藤浩一, 中野由紀子, 平塚真弘
    • Organizer
      第87回日本循環器学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 患者協働とレジリエントな循環器診療を実践するために2023

    • Author(s)
      伊藤英樹
    • Organizer
      第87回日本循環器学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] マニュアルからの脱却~safety-IIの実践2023

    • Author(s)
      伊藤英樹
    • Organizer
      第50回日本集中治療医学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 特別演題「薬物と心電図」:薬剤誘発性QT延長症候群の顕在化に関わる薬理学的作用機序2022

    • Author(s)
      伊藤英樹
    • Organizer
      心電学関連春季大会2022
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Mutation-specific risk stratification for congenital long QT syndrome2022

    • Author(s)
      伊藤英樹
    • Organizer
      第68回日本不整脈心電学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Enhanced Ca2+ leakage from the network sarcoplasmic reticulum associated with RyR2 with a loss of function mutation: a simulation study2021

    • Author(s)
      Hideki Itoh, Minoru Horie, Keiji Imoto
    • Organizer
      第67回日本不整脈心電学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] The ABCG2 polymorphism, 421C>A, modifies the pharmacokinetics of apixaban2021

    • Author(s)
      Hideki Itoh, Satoshi Ueshima, Karin Hirata, Daiki Hira, Youei Tabuchi, Tomoya Ozawa, Yoshihisa Nakagawa, Minoru Horie, Tomohiro Terada, Toshiya Katsura
    • Organizer
      第67回日本不整脈心電学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 筋強直性ジストロフィーの心伝導障害・不整脈の病態と治療2021

    • Author(s)
      伊藤英樹
    • Organizer
      筋ジストロフィーの心不全治療
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Novel CACNA1C R511Q Mutation, Located in Domain1-2 Linker, with Delayed Calcium Channel Inactivation Causes Non-Syndromic Type-8 Long QT Syndrome2021

    • Author(s)
      中島 忠, 伊藤 英樹, 田村 峻太郎, 長谷川 寛, 小針 尭司, 堀江 稔, 倉林 正彦, 金古 善明
    • Organizer
      第86回日本循環器学会学術集会
    • Related Report
      2021 Research-status Report
  • [Book] Management of Cardiac Arrhythmias,3rd ed.2020

    • Author(s)
      Yan GX, Kowey PR, Antzelevitch C (Eds.) Itoh H, Shimizu W (Chap20)
    • Total Pages
      876
    • Publisher
      Springer Nature
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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