Cell Barcoding Reveals Lineage-dependent Outcomes in hiPSC Cardiac Differentiation

Area of Science:

• Stem Cell Biology
• Cardiovascular Research
• Biotechnology

Background:

• Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) show promise for cardiovascular disease treatment.
• Clinical translation is hindered by poor scalability and significant heterogeneity in hiPSC-CM differentiation.
• Controlling hiPSC clonal heterogeneity is a potential strategy to enhance scalability.

Purpose of the Study:

• To investigate the phenomenon of "fate priming" in hiPSC cardiac differentiation.
• To determine if clonal lineage identity influences differentiation outcomes.
• To assess the impact of clonal heterogeneity on hiPSC-CM production.

Main Methods:

• Utilized the ClonMapper cell barcoding platform for labeling, tracking, and isolating distinct hiPSC lineages.
• Compared cardiac differentiation outcomes between single-clone hiPSC populations and heterogeneous multi-clone populations.
• Analyzed lineage-specific differentiation preferences towards cardiomyocytes or non-cardiomyocytes.

Main Results:

• Identified specific hiPSC lineages exhibiting preferential differentiation into either hiPSC-CMs or non-cardiomyocytes.
• Demonstrated significant differences in cardiac differentiation outcomes between isolated single-clone populations and heterogeneous populations.
• Confirmed the influence of lineage identity on hiPSC cardiac differentiation.

Conclusions:

• hiPSC clonal heterogeneity significantly impacts cardiac differentiation efficiency and outcomes.
• The concept of "fate priming" is relevant to hiPSC cardiac differentiation.
• Targeting and controlling hiPSC lineage identity can improve the clinical scalability of hiPSC-CMs.