Generation of a human embryonic stem cell line (WAe009-A-3B) carrying homozygous TNNT2 gene knockout by CRISPR/Cas9 editing.

The TNNT2 gene encodes cardiac troponin T (cTnT), a critical protein in cardiac muscle contraction. Mutations in TNNT2 are associated with various cardiomyopathies, including hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM), which contribute to significant morbidity and mortality. In this study, we established a novel TNNT2 knockout human embryonic stem cell (hESC) line, WAe009-A-3B, utilizing the CRISPR/Cas9 genome editing system. This novel hESC line provides an important tool for investigating the molecular mechanisms underlying TNNT2-related cardiomyopathies and may serve as a promising in vitro model for the development of therapeutic strategies targeting TNNT2 mutations in cardiac diseases.