Measuring hypertrophy in neonatal rat primary cardiomyocytes and human iPSC-derived cardiomyocytes

Area of Science:

• Cardiology
• Molecular Biology
• Stem Cell Research

Background:

• Left ventricular hypertrophy is an adaptive response to increased cardiac workload, often seen in hypertension and coronary artery disease.
• Cardiac hypertrophy can lead to myocardial stiffening, impairing systemic blood supply.
• Understanding the molecular mechanisms of cardiac hypertrophy is crucial for developing therapeutic strategies.

Purpose of the Study:

• To review existing in vitro and in vivo model systems used for studying cardiac hypertrophy.
• To provide detailed methodologies for isolating primary neonatal rat cardiomyocytes and generating human induced pluripotent stem cell-derived cardiomyocytes.
• To describe methods for modeling cardiac hypertrophy in vitro using advanced imaging and molecular analysis.

Main Methods:

• Review of established in vitro (cell lines, iPSC-CMs) and in vivo (rodent, large animal) models.
• Detailed protocols for primary neonatal rat cardiomyocyte isolation.
• Generation of cardiomyocytes from human induced pluripotent stem cells (hiPSC-CMs).
• In vitro modeling of hypertrophy using gene expression analysis, immunofluorescence, and high-content imaging.

Main Results:

• Various model systems, including cell lines, animal models, and iPSC-CMs, have been instrumental in understanding cardiac hypertrophy.
• Primary neonatal rat cardiomyocytes and hiPSC-CMs offer valuable platforms for mechanistic studies.
• Integrated approaches combining molecular and imaging techniques enable robust in vitro hypertrophy modeling.

Conclusions:

• A range of experimental models are available for investigating the molecular drivers of cardiac hypertrophy.
• Human iPSC-derived cardiomyocytes provide a disease-relevant model for studying hypertrophic cardiomyopathies.
• Standardized methods for cardiomyocyte isolation and in vitro hypertrophy modeling are essential for advancing research in this field.