Generation of human iPSC line from an arrhythmogenic cardiomyopathy patient with a DSP protein-truncating variant

Area of Science:

• Cardiovascular Biology
• Stem Cell Biology
• Genetics

Background:

• Arrhythmogenic cardiomyopathy (ACM) is an inherited heart condition.
• It causes lethal heart rhythms and impaired cardiac function.
• DSP gene mutations are linked to ACM, affecting desmoplakin protein crucial for cardiac desmosomes.

Purpose of the Study:

• To generate a human induced pluripotent stem cell (hiPSC) line from an ACM patient with a DSP mutation.
• To characterize the hiPSC line for pluripotency and differentiation capacity.
• To establish a model for in vitro mechanistic studies of DSP-related ACM.

Main Methods:

• Generated hiPSC line from a patient with a heterozygous DSP protein-truncating variant (c.1386del Leu462Serfs*22).
• Assessed hiPSC line for normal karyotype and pluripotency marker expression.
• Confirmed hiPSC differentiation potential into all three germ layers.

Main Results:

• Successfully generated a stable hiPSC line from an ACM patient.
• The hiPSC line exhibits normal karyotype and maintains pluripotency.
• The hiPSC line demonstrates differentiation capacity into multiple cell types.

Conclusions:

• The developed hiPSC line serves as a valuable tool for studying arrhythmogenic cardiomyopathy.
• This model facilitates in vitro investigation of DSP protein-truncation mutation mechanisms in ACM.
• This research advances understanding of inherited heart diseases and potential therapeutic targets.