Characterising Shared and Specific Cell-Cell Communication in Cardiomyopathy Subtypes From Single-Cell...

Area of Science:

• Cardiovascular Biology
• Molecular Medicine
• Genomics

Background:

• Cardiomyopathy presents molecular heterogeneity, especially in cell-cell communication.
• Intercellular interactions, including ligand-receptor signaling, are vital for disease progression.
• Targeted treatments require understanding commonalities and differences in these interactions.

Purpose of the Study:

• To analyze cell-cell communication patterns in different cardiomyopathy subtypes.
• To identify shared and unique intercellular signaling pathways across arrhythmogenic (ACM), dilated (DCM), hypertrophic (HCM), and ischemic (ICM) cardiomyopathies.
• To correlate these patterns with disease-specific features.

Main Methods:

• Single-cell RNA sequencing data from human ventricular tissues.
• Analysis of differential gene expression and pathway enrichment.
• Focus on cell-cell communication analysis, including ligand-receptor interactions.

Main Results:

• Inflammation, autoimmune responses, angiogenesis, lymphangiogenesis, and fibrosis are common across all cardiomyopathy subtypes.
• Distinct pathways were identified for each subtype: arrhythmia in ACM, chronic inflammation in DCM, ECM remodeling in HCM, and ischemic injury/recovery in ICM.
• These findings highlight universal and disease-specific intercellular communication mechanisms.

Conclusions:

• Cardiomyopathies share fundamental intercellular communication pathways related to inflammation and tissue remodeling.
• Each cardiomyopathy subtype exhibits unique signaling profiles, offering potential for targeted therapeutic strategies.
• Cell-cell communication analysis provides critical insights into cardiomyopathy pathogenesis.