Methods for isolating atrial cells from large mammals and humans

Area of Science:

• Cardiology
• Cell Biology
• Biomedical Engineering

Background:

• Atrial fibrillation (AF) involves cellular disturbances in atrial cardiomyocytes, impacting structure, electrophysiology, and calcium handling.
• Human atrial specimens offer direct disease insight but face challenges like patient variability and lack of healthy controls.
• Animal models, especially large mammals, are vital due to their comparable cardiac physiology to humans.

Purpose of the Study:

• To review established and novel techniques for isolating atrial cardiomyocytes.
• To discuss methods suitable for both human and large mammalian cardiac tissue.
• To provide a comprehensive guide for researchers investigating atrial myocyte function and disease.

Main Methods:

• Detailed protocols for cell isolation using both perfusion and chunk digest methods.
• Exploration of solution compositions and tissue-dissociating enzymes to optimize cell yield and viability.
• Comparison of techniques applicable to human atrial tissue and large mammalian models.

Main Results:

• The review synthesizes current knowledge on atrial cardiomyocyte isolation techniques.
• Identifies key factors influencing cell yield and viability, including enzymatic digestion and buffer composition.
• Highlights the utility of large mammalian models for studying human atrial pathologies.

Conclusions:

• Effective isolation of atrial cardiomyocytes is essential for understanding atrial fibrillation and related cardiac conditions.
• Both human and large animal models, when studied with appropriate techniques, provide valuable insights.
• Standardized and optimized isolation protocols are critical for reproducible research in cardiac electrophysiology and disease modeling.