Efficient Large-Scale 2D Culture System for Human Induced Pluripotent Stem Cells and Differentiated Cardiomyocytes

Area of Science:

• Stem Cell Biology
• Cardiovascular Research
• Regenerative Medicine

Background:

• Large-scale culture of human induced pluripotent stem cells (hiPSCs) is a significant challenge for cardiac regenerative therapies.
• Existing methods often struggle with scalability and maintaining cell pluripotency during expansion.

Purpose of the Study:

• To develop and validate a scalable 2D culture system for human induced pluripotent stem cells (hiPSCs).
• To optimize the differentiation of hiPSCs into cardiomyocytes (CMs) using this novel culture system.
• To facilitate the clinical application of hiPSC-derived CMs for treating heart failure.

Main Methods:

• Utilized multilayer culture plates (CPs) with active gas ventilation (AGV) for hiPSC expansion.
• Cultured hiPSCs to achieve high cell densities while maintaining pluripotency.
• Employed a sequential 2D differentiation protocol to generate cardiomyocytes (CMs).
• Implemented metabolic purification techniques to isolate purified CMs.

Main Results:

• Achieved stable hiPSC proliferation and pluripotency in multilayer CPs with AGV.
• Successfully scaled hiPSC culture, yielding up to 1.7 x 10^9 cells in 10-layer CPs.
• Demonstrated high cardiac differentiation efficiency (66%-87%) using the 10-layer CPs with AGV.
• Obtained a massive amount of purified cardiomyocytes (1.5-2.8 x 10^9 cells) after metabolic purification.

Conclusions:

• A scalable 2D culture system using multilayer CPs with AGV effectively supports hiPSC expansion and differentiation into cardiomyocytes.
• This optimized culture and differentiation strategy significantly enhances the yield of hiPSC-derived CMs.
• The developed system holds promise for advancing clinical applications of cell-based therapies for severe heart failure.