Generation of two iPSC lines from dilated cardiomyopathy patients with pathogenic variants in the SCN5A gene

Area of Science:

• Cardiology
• Genetics
• Stem Cell Biology

Background:

• Dilated cardiomyopathy (DCM) involves cardiac dysfunction and heart failure.
• SCN5A gene variants are associated with a subset of DCM cases.
• Understanding SCN5A's role in DCM is crucial for developing targeted therapies.

Purpose of the Study:

• To generate human induced pluripotent stem cell (iPSC) lines from DCM patients with specific SCN5A variants.
• To characterize these iPSC lines for pluripotency and differentiation potential.
• To establish a resource for investigating the disease mechanisms of SCN5A-associated DCM.

Main Methods:

• Peripheral mononuclear blood cells were collected from DCM patients with SCN5A variants (c.2440C>T and c.665G>A).
• Human induced pluripotent stem cell (iPSC) lines were generated from these patient-derived cells.
• Standard assays were performed to confirm iPSC morphology, pluripotency marker expression, normal karyotype, and trilineage differentiation capacity.

Main Results:

• Two distinct human iPSC lines were successfully generated from DCM patients with SCN5A variants.
• These iPSC lines displayed characteristic morphology and expressed key pluripotency markers.
• Karyotype analysis revealed normal chromosomal complements, and trilineage differentiation confirmed their pluripotent potential.

Conclusions:

• The generated iPSC lines serve as a valuable preclinical model for SCN5A-associated DCM.
• These cellular models will facilitate research into the functional consequences of SCN5A variants.
• Further studies using these iPSC lines can elucidate the role of ion channel proteins in DCM pathogenesis.