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Role of CHP3 in heart failure induced by diabetes

Research Project

Project/Area Number 21K06774
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48020:Physiology-related
Research InstitutionShowa University

Principal Investigator

Kobayashi Soushi  昭和大学, 薬学部, 講師 (50511531)

Co-Investigator(Kenkyū-buntansha) 野部 浩司  昭和大学, 薬学部, 教授 (30276612)
柴田 佳太  昭和大学, 薬学部, 准教授 (50727328)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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)
KeywordsCHP3 / 心筋細胞 / 骨格筋細胞 / 心臓 / 骨格筋 / KOマウス
Outline of Research at the Start

2型糖尿病はインスリンの作用不足により起こる疾患であり、様々な心疾患のリスクファクターとして知られている。カルシニューリンB様タンパク質3(CHP3)は、心筋細胞に多く発現しているが、その機能は不明である。新生仔ラット培養心筋細胞においてCHP3遺伝子をノックダウンさせたところ、インスリン非存在下で細胞が肥大化することが分かった。本研究では、糖尿病に伴う心肥大の発症とCHP3との関連性について明らかにする。

Outline of Final Research Achievements

CHP3 is one of the proteins with unknown function. Previously, CHP3 was found to regulate cardiomyocyte volume via insulin signaling. In this study, we aimed to determine the effects of CHP3 on the formation of cardiac hypertrophy in obesity and type 2 diabetes mellitus. CHP3-deficient mice were found to gain weight and heart weight with aging. In addition, CHP3-deficient mice at 48 weeks of age had increased blood glucose levels after glucose loading compared to wild-type mice. Furthermore, rectus femoris and soleus muscle weights were reduced, and muscle strength was also decreased. Thus, it was suggested that CHP3 deficiency causes abnormal glucose metabolism via skeletal muscle loss, resulting in cardiac hypertrophy.

Academic Significance and Societal Importance of the Research Achievements

現在、高インスリン血症による心肥大の発症を抑制する方法は確立されていない。本研究ではCHP3の機能を明らかにすることで、肥満や糖尿病由来の心肥大を抑制する方法の開発に貢献できると考えられる。

Report

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

    (1 results)

All 2022

All Presentation (1 results)

  • [Presentation] Calcineurin B homologous protein 3 facilitates the skeletal muscle development2022

    • Author(s)
      古林 創史、野部 浩司
    • Organizer
      第96回薬理学会年会
    • Related Report
      2022 Research-status Report

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

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