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Multi-species Meta-Analysis Identifies Transcriptional Signatures Associated with Cardiac Endothelial Responses in the Ischaemic Heart.

Cardiovascular research(2023)SCI 1区SCI 2区

Univ Edinburgh | Univ British Columbia | Univ Oxford

Cited 7|Views4
Abstract
AbstractAimMyocardial infarction remains the leading cause of heart failure. The adult human heart lacks the capacity to undergo endogenous regeneration. New blood vessel growth is integral to regenerative medicine necessitating a comprehensive understanding of the pathways that regulate vascular regeneration. We sought to define the transcriptomic dynamics of coronary endothelial cells following ischaemic injuries in the developing and adult mouse and human heart and to identify new mechanistic insights and targets for cardiovascular regeneration.Methods and resultsWe carried out a comprehensive meta-analysis of integrated single-cell RNA-sequencing data of coronary vascular endothelial cells from the developing and adult mouse and human heart spanning healthy and acute and chronic ischaemic cardiac disease. We identified species-conserved gene regulatory pathways aligned to endogenous neovascularization. We annotated injury-associated temporal shifts of the endothelial transcriptome and validated four genes: VEGF-C, KLF4, EGR1, and ZFP36. Moreover, we showed that ZFP36 regulates human coronary endothelial cell proliferation and defined that VEGF-C administration in vivo enhances clonal expansion of the cardiac vasculature post-myocardial infarction. Finally, we constructed a coronary endothelial cell meta-atlas, CrescENDO, to empower future in-depth research to target pathways associated with coronary neovascularization.ConclusionWe present a high-resolution single-cell meta-atlas of healthy and injured coronary endothelial cells in the mouse and human heart, revealing a suite of novel targets with great potential to promote vascular regeneration, and providing a rich resource for therapeutic development.
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scRNA-seq meta-analysis,ischaemic heart disease,vascular regeneration
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要点】:本研究通过多物种单细胞RNA测序的元分析,揭示了与心脏内皮细胞缺血反应相关的转录特征,为心血管再生提供了新的机制见解和靶点。

方法】:研究采用综合元分析方法,整合了发育和成年小鼠及人类心脏冠脉血管内皮细胞的单细胞RNA测序数据,涵盖了健康状态及急慢性缺血性心脏疾病。

实验】:研究验证了四个基因(VEGF-C、KLF4、EGR1和ZFP36),并在体内实验中证实了VEGF-C可增强心肌梗死后心脏血管的克隆扩张。此外,构建了冠脉内皮细胞元图谱CrescENDO,用于未来深入研究。实验使用的数据集名称未在摘要中明确提及。