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Updated: May 4, 2026

Improved Generation of Induced Cardiomyocytes Using a Polycistronic Construct Expressing Optimal Ratio of Gata4, Mef2c and Tbx5
Published on: November 13, 2015
Generation of four distinct isogenic cell lines with truncating variants in I-band or A-band titin
Hanne M Boen1, Bert Vandendriessche2, Jolien Schippers2
1University of Antwerp and Antwerp University Hospital, GENCOR, Cardiovascular Research, Belgium; University of Antwerp, GENCOR, Center of Medical Genetics, Belgium.
Abstract:
Truncating variants in TTN (TTNtv) are present in 15-25 % of patients with idiopathic dilated cardiomyopathy. Interestingly, the pathogenicity of TTNtv seems to be linked to their location within the gene. More proximal I-band TTNtv (TTNtvI) harbour less pathogenic potential than distant A-band TTNtv (TTNtvA). We created isogenic human induced pluripotent stem cell lines (hiPSC) with TTNtvI and TTNtvA using CRISPR/Cas9, for the investigation of the pathomechanism in hiPSC-derived cardiomyocytes (hiPSC-CMs). Exon 48 (E48), located in the I-band, and exon 357 (E357), located in the A-band were targeted.
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