Calcium and voltage mapping in hiPSC-CM monolayers

Area of Science:

• Cardiovascular Research
• Stem Cell Biology
• Electrophysiology

Background:

• Human induced pluripotent stem cell derived cardiomyocytes (hiPSC-CMs) provide a renewable source of patient-specific cardiac cells.
• Current research often utilizes single hiPSC-CMs, limiting physiological relevance for complex cardiac functions.
• Studying cardiac arrhythmias requires models that mimic the syncytium-like nature of adult cardiomyocytes.

Purpose of the Study:

• To review recent advancements in using hiPSC-CM 2D monolayers for studying cardiac electrical impulse propagation.
• To highlight the potential of hiPSC-CMs in creating more physiologically relevant models for cardiovascular research.
• To explore applications in disease modeling and drug toxicity testing beyond single-cell cultures.

Main Methods:

• Focus on studies employing two-dimensional (2D) monolayers of hiPSC-CMs.
• Analysis of research investigating electrical impulse propagation within these cellular networks.
• Review of methodologies enabling hiPSC-CMs to function as electrically and mechanically connected syncytia.

Main Results:

• hiPSC-CM 2D monolayers represent a significant step towards more physiologically relevant in vitro cardiac models.
• These models facilitate the investigation of complex cardiac electrical phenomena, including arrhythmia mechanisms.
• Advancements enable the study of synchronized electrical activity, mimicking the adult heart's syncytium.

Conclusions:

• hiPSC-CM 2D monolayers are crucial for advancing cardiovascular research, disease modeling, and drug testing.
• This technology moves beyond single-cell limitations, offering a more comprehensive understanding of cardiac electrophysiology.
• Future research directions include further refining these models for regenerative medicine and complex arrhythmia studies.