Single‐Cell Transcriptomics Reveals Dynamic Cellular Interactions and Molecular Mechanisms in Myocardial Infarction Recovery
Jianfeng Zhao, Junhui Gong, Cunzhi Zhu
TL;DR
This study uses single-cell RNA sequencing to map the cellular and molecular changes during heart recovery after a heart attack, identifying key cell types and signaling pathways involved in repair.
Contribution
The study provides a high-resolution, dynamic view of cell interactions and gene expression patterns during myocardial infarction recovery.
Findings
Multiple cell types, including macrophages and fibroblasts, show distinct temporal gene expression patterns during heart repair.
Macrophages are identified as key orchestrators of repair through intercellular communication networks.
The MIF signaling pathway is highly active in post-MI repair, with chemokine-secreting cells and fibroblasts as major contributors.
Abstract
Repair and remodeling following myocardial infarction (MI) are complex processes with a wide array of cellular and molecular mechanisms; however, the cell source mediating repair is still poorly understood in terms of heterogeneity and temporal dynamics. We performed a single‐cell RNA sequencing (scRNA‐seq) analysis of cardiac tissues from different time points post‐MI, as well as in gene knockout (ChrisKO) and health control groups. The data were mined by UMAP and t‐SNE dimension reduction visualization, pseudotime trajectory analysis, cell communication network analysis, and gene expression pattern cluster. A collection of cell types contributing to cardiac repair was identified, including fibroblasts, macrophages, endothelial cells, and cardiomyocytes that each expressed gene markers and showed temporal distributions associated with distinct injury phases. Pseudotime trajectory…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsCardiac Fibrosis and Remodeling · Macrophage Migration Inhibitory Factor · Congenital heart defects research