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Research for novel genetic basis of familial hypobetalipoproteinemia

Research Project

Project/Area Number 21K08066
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionOsaka University of Human Sciences

Principal Investigator

Yamagishi Masakazu  大阪人間科学大学, 保健医療学部, 教授 (70393238)

Co-Investigator(Kenkyū-buntansha) 岡田 寛史  金沢大学, 附属病院, 助教 (10735161)
多田 隼人  金沢大学, 附属病院, 助教 (90623653)
Project Period (FY) 2021-04-01 – 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 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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)
Keywords家族性低βリポタンパク血症 / アポB / PCSK9 / 家族性低ベータリポタンパク血症 / LDLコレステロール / 遺伝子 / 機能解析
Outline of Research at the Start

我々の蓄積してきた家族性低ベータリポタンパク血症(FHBL)家系200例に対して、網羅的遺伝子解析技術により、新規関連遺伝子を同定する。新規遺伝子変異が同定された家系に対して安定同位体を用いた代謝実験、疾患特異的iPS細胞を用いた代謝実験を行い、その分子のコレステロール代謝へ果たすメカニズムを明確とする。本研究により、FHBLにおける新規原因分子を同定し、その病態を明らかとする。

Outline of Final Research Achievements

A case of PCSK9 gene loss-of-function mutant homozygous was recognized and reported in an English-language journal. Interestingly, no phenotypes such as liver or kidney damage or fat-soluble vitamin deficiency were identified. We also identified overlapping families with familial hypercholesterolemia (FH) phenotypes and FHBL phenotypes. Interestingly, we confirmed that the phenotype of marked hyperLDL cholesterolemia was completely canceled by a loss-of-function gene mutation in Apo B. In addition, we identified an FHBL family associated with homozygous ANGPTL3 loss-of-function gene mutation, which is thought to be the first of its kind in Japan. It was found that liver dysfunction, renal dysfunction, and fat-soluble vitamin deficiency were not involved.

Academic Significance and Societal Importance of the Research Achievements

PCSK9やANGPTL3欠損症においても重篤な肝障害や腎障害、脂溶性ビタミン欠乏などを認めなかったことからこれら分子の阻害によるLDLコレステロール低下療法の有効性や安全性が示唆された。さらには、著明な高LDLコレステロールを呈する家族性高コレステロール血症に対してもこれらの分子の阻害が有効かつ安全であることが示唆された。

Report

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

    (10 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (6 results) (of which Invited: 3 results)

  • [Journal Article] The first Japanese case with familial combined hypolipidemia without any complications caused by loss-of function variants in ANGPTL3: Case report2024

    • Author(s)
      Tada H, Kojima N, Kawashiri MA, Takamura M
    • Journal Title

      Heliyon

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prospective Registry Study of Primary Dyslipidemia (PROLIPID): Rationale and Study Design2022

    • Author(s)
      Tada H, Kurashina T, Ogura M, Takegami M, Miyamoto Y, Arai H, Harada-Shiba M, Ishibashi S; Committee on Primary Dyslipidemia under the Research Program on Rare and Intractable Disease of the Ministry of Health, Labour and Welfare of Japan
    • Journal Title

      Journal of Atherosclerosis and Thrombosis

      Volume: 29 Issue: 6 Pages: 953-969

    • DOI

      10.5551/jat.63222

    • NAID

      130008106840

    • ISSN
      1340-3478, 1880-3873
    • Year and Date
      2022-06-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Familial hypobetalipoproteinemia caused by homozygous loss-of-function mutations in PCSK9: A case report2022

    • Author(s)
      Kudo T, Sasaki K, Tada H
    • Journal Title

      J Clin Lipidol

      Volume: 16 Issue: 5 Pages: 596-600

    • DOI

      10.1016/j.jacl.2022.07.010

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Case report: Unusual coexistence between familial hypercholesterolemia and familial hypobetalipoproteinemia2022

    • Author(s)
      Sasaki K, Tada H, Kawashiri MA, Ito T
    • Journal Title

      Front Cardiovasc Med

      Volume: 9

    • DOI

      10.3389/fcvm.2022.942772

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] ゲノム情報に基づく動脈硬化性疾患予防医学へのアプローチ2023

    • Author(s)
      多田隼人
    • Organizer
      第55回日本動脈硬化学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 個別化医療時代の動脈硬化予防・包括的脂質異常症治療2023

    • Author(s)
      多田隼人
    • Organizer
      第23回日本抗加齢医学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 単一遺伝子病から多因子病に向けた、遺伝医療のアプローチ2022

    • Author(s)
      多田隼人
    • Organizer
      第29回日本遺伝子診療学会大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 遺伝学的エビデンスから考える アポB含有リポタンパク包括的管理の重要性と今後の展望2022

    • Author(s)
      多田隼人
    • Organizer
      第70回日本心臓病学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 脂質異常症ゲノム医療実践に向けて2021

    • Author(s)
      多田隼人
    • Organizer
      日本人類遺伝学会第66回大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ヒトゲノム情報を循環器病予防にどう活かすか?2021

    • Author(s)
      多田隼人
    • Organizer
      第57回 日本循環器病予防学会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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