CaMKII in Regulation of Cell Death During Myocardial Reperfusion Injury
Related Experiment Video
Updated: Nov 1, 2025
Improved Rodent Model of Myocardial Ischemia and Reperfusion Injury
Published on: March 7, 2022
Yingjie Yang1, Kai Jiang2, Xu Liu1
1Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
Insights
Cardiovascular disease causes widespread death. Targeting Calcium/calmodulin-dependent protein kinase II (CaMKII) and its role in cardiomyocyte death pathways may reduce myocardial reperfusion injury and improve patient outcomes.
Area of Science:
- Cardiology
- Molecular Biology
- Cell Biology
Background:
- Cardiovascular disease is a leading global cause of mortality.
- Myocardial infarction (MI) reperfusion (I/R) injury contributes significantly to post-MI morbidity and mortality.
- Cardiomyocyte calcium overload is a key driver of I/R injury, leading to cell death and cardiac dysfunction.
Purpose of the Study:
- To review the role of Ca2+/calmodulin-dependent protein kinase II (CaMKII) in cardiomyocyte death during myocardial I/R injury.
- To explore the molecular mechanisms underlying CaMKII-mediated necroptosis and pyroptosis.
- To highlight CaMKII modifications and cell death pathways as potential therapeutic targets.
Main Methods:
- Literature review focusing on CaMKII in myocardial I/R injury.
- Analysis of CaMKII activation, localization, and posttranslational modifications.
- Examination of CaMKII's role in regulating cardiomyocyte necroptosis and pyroptosis.
Main Results:
- CaMKII activation is central to cardiomyocyte death following I/R injury.
- CaMKIIδ, the predominant cardiac subtype, mediates mitochondrial swelling, ER Ca2+ leakage, and contractile dysfunction.
- CaMKII influences cardiomyocyte fate through necroptosis and pyroptosis pathways.
Conclusions:
- CaMKII plays a critical role in cardiomyocyte death during myocardial I/R injury.
- Targeting CaMKII modifications and associated cell death pathways offers a promising therapeutic strategy.
- Understanding CaMKII's role may provide new insights into managing I/R injury and cardiomyocyte fate.
Abstract:
Cardiovascular disease is the leading cause of death worldwide. In spite of the mature managements of myocardial infarction (MI), post-MI reperfusion (I/R) injury results in high morbidity and mortality. Cardiomyocyte Ca2+ overload is a major factor of I/R injury, initiating a cascade of events contributing to cardiomyocyte death and myocardial dysfunction. Ca2+/calmodulin-dependent protein kinase II (CaMKII) plays a critical role in cardiomyocyte death response to I/R injury, whose activation is a key feature of myocardial I/R in causing intracellular mitochondrial swelling, endoplasmic reticulum (ER) Ca2+ leakage, abnormal myofilament contraction, and other adverse reactions. CaMKII is a multifunctional serine/threonine protein kinase, and CaMKIIδ, the dominant subtype in heart, has been widely studied in the activation, location, and related pathways of cardiomyocytes death, which has been considered as a potential targets for pharmacological inhibition. In this review, we summarize a brief overview of CaMKII with various posttranslational modifications and its properties in myocardial I/R injury. We focus on the molecular mechanism of CaMKII involved in regulation of cell death induced by myocardial I/R including necroptosis and pyroptosis of cardiomyocyte. Finally, we highlight that targeting CaMKII modifications and cell death involved pathways may provide new insights to understand the conversion of cardiomyocyte fate in the setting of myocardial I/R injury.
