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2020 Fiscal Year Final Research Report

Anti-inflammatory approach targeting calcium/calmodulin-dependent protein kinase as a novel therapeutic strategy to the heart failure

Research Project

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Project/Area Number 19K23969
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionYamaguchi University

Principal Investigator

Suetomi Takeshi  山口大学, 医学部附属病院, 診療助教(4日/週) (40749842)

Project Period (FY) 2019-08-30 – 2021-03-31
Keywordsカルモジュリン依存性キナーゼ / マクロファージ / 心筋細胞 / 慢性炎症 / 心不全 / 圧負荷 / 心筋リモデリング
Outline of Final Research Achievements

The potential efficacy of anti-inflammatory therapy was shown by the results of the recently published clinical trials in which a significant decrease in adverse cardiac events was observed in patients treated by inhibitions of sterile inflammation. We investigated how the inflammatory signals from cardiomyocytes propagate to other cells. Elevated inflammatory gene expressions and inflammasome activations are observed in macrophages when cocultured with osmotic-stretched neonatal mouse cardiomyocytes. These responses are regulated by the Calcium/calmodulin-dependent protein kinase(CaMKII) in macrophage.

Free Research Field

心不全

Academic Significance and Societal Importance of the Research Achievements

一連の結果から、心筋負荷から生じる炎症シグナルがCaMKII依存性にマクロファージに影響しリモデリングに寄与することが示唆された。ただし今回の研究期間では細胞外小胞取り込みの直接的な確認には至っておらず、マクロファージの反応の違いが、細胞外小胞の取り込みの違いによって生じているかは現時点では明らかではない。また、マクロファージ以外の非心筋細胞の反応についても十分な評価ができておらず、今後の課題である。CaMKIIを標的とすることで、より選択的で、免疫抑制の副作用を回避した炎症治療法につながる可能性があり、引き続き上記の機序を明らかにしたい。

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Published: 2022-01-27  

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