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Arrhythmogenic Cardiomyopathy: from Preclinical Models to Genotype-phenotype Correlation and Pathophysiology
Xuehui Fan1,2,3, Guoqiang Yang2,4,5, Firat Duru6
1Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China.
Insights
Arrhythmogenic cardiomyopathy (ACM) is a genetic heart condition causing sudden cardiac death. This review examines preclinical models to understand ACM
Area of Science:
- Cardiology
- Genetics
- Molecular Biology
Background:
- Arrhythmogenic cardiomyopathy (ACM) is an inherited heart disease.
- It involves fibrous fatty deposits in the ventricular myocardium.
- ACM is a leading cause of sudden cardiac death (SCD) in young individuals.
Purpose of the Study:
- To review and summarize preclinical models of ACM.
- To assess the utility of these models in understanding ACM pathogenesis.
- To evaluate their role in elucidating ACM genotype-phenotype relationships.
Main Methods:
- Review of existing literature on ACM preclinical models.
- Analysis of various models including gene-targeted and transgenic animals, hiPSC-CMs, and heterologous expression systems.
- Assessment of model applicability for studying ACM mechanisms.
Main Results:
- Significant advancements in genetic analysis have identified ACM genetic backgrounds.
- Various preclinical models have been developed to study ACM.
- These models offer platforms to investigate ACM pathogenesis and genotype-phenotype correlations.
Conclusions:
- Preclinical models are crucial for advancing the understanding of ACM.
- Further research using these models is needed to clarify molecular mechanisms and genotype-phenotype correlations.
- Improved understanding will aid in predicting prognosis and guiding treatment for ACM patients.
Abstract:
Arrhythmogenic cardiomyopathy (ACM) is a hereditary myocardial disease characterized by the replacement of the ventricular myocardium with fibrous fatty deposits. ACM is usually inherited in an autosomal dominant pattern with variable penetrance and expressivity, which is mainly related to ventricular tachyarrhythmia and sudden cardiac death (SCD). Importantly, significant progress has been made in determining the genetic background of ACM due to the development of new techniques for genetic analysis. The exact molecular pathomechanism of ACM, however, is not completely clear and the genotype-phenotype correlations have not been fully elucidated, which are useful to predict the prognosis and treatment of ACM patients. Different gene-targeted and transgenic animal models, human-induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) models, and heterologous expression systems have been developed. Here, this review aims to summarize preclinical ACM models and platforms promoting our understanding of the pathogenesis of ACM and assess their value in elucidating the ACM genotype-phenotype relationship.
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