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2023 Fiscal Year Final Research Report

Natriuretic Peptides Induce Thermogenesis and Improve Insulin Resistance

Research Project

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Project/Area Number 21K16099
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53020:Cardiology-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Kimura Haruka  東京慈恵会医科大学, 医学部, 講師 (80895003)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsナトリウム利尿ペプチド / 熱産生 / インスリン抵抗性
Outline of Final Research Achievements

It has been indicated that natriuretic peptides (NPs) could induce adipose tissue browning and activate thermogenic program. However, no reports have demonstrated the thermogenic effects of NPs in adipose tissue by directly measuring intracellular temperature. We directly demonstrated thermogenic actions of ANP in brown adipocytes by using a newly-established intracellular temperature measurement system. We also showed that exogenous NP administration ameliorates HFD-induced insulin resistance by attenuating hepatic steatosis and by inducing adipose tissue browning.
The present findings provide new insight into the self-protective role of NPs when the core body temperature or the local tissue (including heart itself) temperature fall due to unfavorable hemodynamics in a state of severe heart failure.

Free Research Field

循環器内科

Academic Significance and Societal Importance of the Research Achievements

近年、様々な抗心不全薬の登場により心不全治療の選択肢は増えてきている。ナトリウム利尿ペプチド(Natriuretic Peptide: NP)活性化薬であるネプリライシン阻害薬もその一角を占めており、心不全予後改善効果が証明されたことで処方機会も増加している。
本研究によって、NPを介した心臓-脂肪-肝臓連関が明らかになったとともに、NP活性化薬が心不全改善効果のみならずインスリン抵抗性病態に対する治療手段になる可能性が示唆された。NPと同じ下流シグナルを持つ抗心不全薬についても引き続き研究を行うことで、心不全病態の更なる解明と治療レスポンダーの究明が望まれる。

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Published: 2025-01-30  

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