Transcriptome studies of inherited dilated cardiomyopathies

Area of Science:

• Cardiovascular Genetics
• Molecular Cardiology
• Genomics

Background:

• Dilated cardiomyopathy (DCM) is a heterogeneous heart muscle disease leading to heart failure.
• Over 50 genes are linked to inherited DCM, necessitating precision medicine approaches.
• Distinct molecular signatures exist for DCMs of different genetic origins.

Purpose of the Study:

• To review transcriptome studies in inherited DCM, focusing on TTN, LMNA, and BAG3 genes.
• To summarize transcriptomic analyses across human patients and various model systems.
• To highlight the role of RNA sequencing in advancing DCM research and precision medicine.

Main Methods:

• Review of existing transcriptome studies in human DCM patients.
• Analysis of transcriptomic data from iPSCs, rodents, and zebrafish models.
• Focus on studies involving TTN, LMNA, and BAG3 causative genes.

Main Results:

• RNA sequencing (RNA-seq) is a powerful tool for discovering novel DCM-associated genes and pathways.
• Transcriptome studies have identified distinct molecular profiles for DCM based on genetic etiology.
• Model systems offer valuable insights into DCM pathogenesis.

Conclusions:

• RNA-seq facilitates the discovery of therapeutic targets for inherited DCM.
• Future studies should incorporate temporal and spatial transcriptomic data.
• Advancements in model systems, like zebrafish, will accelerate research and precision medicine development for DCM.