What question did this study set out to answer?

To explore how hyperphosphatemia-induced exosomal microRNAs from endothelial cells contribute to vascular calcification in chronic kidney disease.

Exosomal hsa-miR-299-3p from endothelium mediates high phosphorus-induced vascular calcification in mice model of CKD via phosphorylated JAK2/STAT5 pathway

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Investigates exosomal miR-299-3p's role in vascular calcification in chronic kidney disease, indicating a new therapeutic target.

To explore how hyperphosphatemia-induced exosomal microRNAs from endothelial cells contribute to vascular calcification in chronic kidney disease.
Established a CKD-VC mouse model with high phosphorus diet
Isolated exosomes from endothelial cells under high phosphorus conditions
Evaluated the effects of exosomes on vascular smooth muscle cell calcification in vitro and in vivo
Performed miRNA sequencing, luciferase assays, and molecular analyses
Conducted knockdown experiments to observe functional implications of miR-299-3p
High phosphorus stimulated endothelial cells released exosomes that promoted vascular calcification in VSMCs
miR-299-3p was significantly upregulated in exosomes from high phosphorus-stimulated endothelial cells
Exosomal miR-299-3p activated the p-JAK2/STAT5 pathway, promoting osteogenic differentiation
Knockdown of miR-299-3p reduced vascular calcification in CKD mice

Chen et al. (2026) studied this question.

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