Transcriptome analysis reveals EBF1 ablation-induced injuries in cardiac system

Area of Science:

• Cardiovascular Biology
• Molecular Cardiology
• Developmental Biology

Background:

• Transcription factors (TFs) regulate heart development and stress responses, impacting cardiac disorders.
• The precise mechanisms of TF regulation in the heart are not fully understood.
• EBF1, a TF, is expressed in human heart tissue and linked to cardiovascular disease, but its cardiac role is unclear.

Purpose of the Study:

• To investigate the function of EBF1 in cardiac development and disease.
• To elucidate the regulatory mechanisms of EBF1 in the heart.

Main Methods:

• RNA-sequencing to profile EBF1 expression.
• CRISPR/Cas9 gene editing to knock out EBF1.
• Human pluripotent stem cells (hPSCs) differentiated into cardiac lineages.
• Echocardiography in mouse models with Ebf1 knockout.
• Chromatin immunoprecipitation sequencing (ChIP-seq) to identify EBF1-bound genes.

Main Results:

• EBF1 is expressed in human and mouse cardiomyocytes.
• EBF1 knockout inhibited cardiac development and caused transcriptional perturbations.
• EBF1 directly binds to promoters of key cardiogenic TFs and cardiac hypertrophy genes.
• Ebf1 depletion in mice led to cardiac remodeling and hypertrophy.

Conclusions:

• EBF1 plays a critical role in cardiac development and function.
• EBF1 regulates cardiogenesis and cardiac hypertrophy through direct gene binding.
• Understanding EBF1 mechanisms offers insights into cardiac remodeling and potential therapeutic strategies for cardiomyopathy.