Key result
Patient-specific iPSC lines successfully model heterozygous LMNA c.398 G > A mutation with preserved pluripotency.
Why the study?
LMNA-related dilated cardiomyopathy is caused by pathogenic LMNA variants and requires in vitro models to study its pathological mechanisms.
The successful generation of these patient-specific iPSC lines provides a valuable in vitro model for studying the pathological mechanisms of LMNA-related dilated cardiomyopathy.
May enable mechanistic studies of LMNA cardiomyopathy; leaves open clinical translation pending validation.
LMNA-related dilated cardiomyopathy (LMNA-DCM) is caused by pathogenic variants in the LMNA gene and is characterized by left ventricular chamber enlargement, reduced systolic function, and arrhythmia. Here, we generated three human induced pluripotent stem cell (iPSC) lines from peripheral blood mononuclear cells (PBMCs) of three DCM patients carrying the same single heterozygous mutation, c.398 G > A, in LMNA. All lines exhibited normal iPSC morphology, expressed high levels of pluripotency markers, showed normal karyotypes, and could differentiate into the three germ layers. These patient-specific iPSC lines can serve as invaluable tools to model in vitro pathological mechanisms of LMNA-DCM.
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Cho et al. (2022) studied LMNA-related dilated cardiomyopathy (n=3). Generation of induced pluripotent stem cell (iPSC) lines was evaluated on iPSC line characterization (morphology, pluripotency markers, karyotypes, and differentiation potential). Three patient-specific iPSC lines carrying the heterozygous LMNA c.398 G > A mutation were successfully generated and exhibited normal morphology, pluripotency, and differentiation potential.
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