单细胞分析揭示参七归正方剂对急性心肌梗死的协同治疗机制

Abstract

The Shenqi Fuzheng (SQ) formula, made from Codonopsis Radix ( Dangshen , DS) and Astragali Radix ( Huangqi , HQ), has been used in Traditional Chinese Medicine (TCM) and exhibits cardio-protective effects against acute myocardial infarction (AMI). However, the molecular basis of DS-HQ synergy remains unclear. Here, we combined RNA sequencing (RNA-seq) and single-cell RNA sequencing (scRNA-seq) to explore their synergistic mechanisms. Transcriptomic analyses showed that SQ influenced the AMI network more effectively than either herb alone. ScRNA-seq analysis revealed that these synergistic effects involve both direct and indirect pro-angiogenic pathways. The combination treatment enhanced pro-angiogenic responses in microvascular endothelial subpopulations and promoted angiogenesis in the border zone. It also enhanced the anti-inflammatory role of a specific reparative macrophage subset and stimulated vascular endothelial growth factor A (VEGFA) secretion from these cells, supporting the VEGFA-VEGFR signaling between macrophages and microvascular endothelial cells. This coordinated regulation provides a plausible mechanistic explanation for the reduced infarct size and improved cardiac outcomes seen in vivo , highlighting the therapeutic value of TCM.