Related Experiment Video
Updated: Mar 6, 2026
Micropatterning and Assembly of 3D Microvessels
Published on: September 9, 2016
The pro-inflammatory signalling regulator Stat4 promotes vasculogenesis of great vessels derived from endothelial
Zhao-Zheng Meng1, Wei Liu1, Yu Xia1
1Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences &Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China.
Insights
Stat4 promotes great vessel development in zebrafish by regulating endothelial precursors. Its deficiency causes pharyngeal arch artery defects, suggesting Stat4 as a potential therapeutic target for congenital cardiovascular diseases.
Area of Science:
- Developmental biology
- Genetics
- Cardiovascular research
Background:
- Congenital cardiovascular diseases often stem from defects in great vessel (GV) formation.
- Genetic regulators of endothelial precursors during GV vasculogenesis are not well understood.
Purpose of the Study:
- To investigate the role of Stat4 in zebrafish GV vasculogenesis.
- To identify genetic regulators of endothelial precursors in GV development.
Main Methods:
- Utilized zebrafish models to study gene function in vivo.
- Analyzed gene expression patterns using transcript enrichment.
- Investigated gene ablation effects on vascular development.
- Examined gene regulatory networks involving Stat4, nkx2.5, hdac3, and stat1a.
Main Results:
- Stat4 transcripts are enriched in nkx2.5+ endothelial precursors in the pharynx.
- Genetic ablation of stat4 leads to pharyngeal arch artery (PAA) stenosis by impairing angioblast development.
- Stat4 acts downstream of nkx2.5 and promotes endothelial precursor proliferation.
- Stat4 inhibits hdac3 expression and counteracts stat1a activity in PAA angioblasts.
Conclusions:
- Stat4 is crucial for zebrafish great vessel development.
- Stat4 regulates endothelial precursor proliferation and differentiation.
- Stat4 may represent a therapeutic target for great vessel defects and congenital heart disease.
Abstract:
Vasculogenic defects of great vessels (GVs) are a major cause of congenital cardiovascular diseases. However, genetic regulators of endothelial precursors in GV vasculogenesis remain largely unknown. Here we show that Stat4, a transcription factor known for its regulatory role of pro-inflammatory signalling, promotes GV vasculogenesis in zebrafish. We find stat4 transcripts highly enriched in nkx2.5+ endothelial precursors in the pharynx and demonstrate that genetic ablation of stat4 causes stenosis of pharyngeal arch arteries (PAAs) by suppressing PAAs 3-6 angioblast development. We further show that stat4 is a downstream target of nkx2.5 and that it autonomously promotes proliferation of endothelial precursors of the mesoderm. Mechanistically, stat4 regulates the emerging PAA angioblasts by inhibiting the expression of hdac3 and counteracting the effect of stat1a. Altogether, our study establishes a role for Stat4 in zebrafish great vessel development, and suggests that Stat4 may serve as a therapeutic target for GV defects.
Related Concept Videos
01:24Regulation of Angiogenesis and Blood Supply
01:07Development of Blood Vessels
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
01:10Mechanism of Angiogenesis