Plant-derived nanovesicles as novel nanotherapeutics for alleviating endothelial cell senescence-associated vascular remodeling induced by hypertension

Endothelial cell senescence contributes to vascular remodeling in hypertension, a condition that lacks specific clinical treatments. While plant-derived nanovesicles have shown anti-inflammatory properties that reduce endothelial inflammation, their role in endothelial cell senescence is less understood. Here, we isolated and purified nanovesicles from Semen Sinapis albae (SDNVs), a traditional Chinese medicine with antihypertensive properties, and evaluated their therapeutic effects on vascular remodeling in spontaneously hypertensive rats (SHRs) compared to nifedipine, a standard antihypertensive drug. SDNVs were as effective as nifedipine in reducing blood pressure and exceeded nifedipine in mitigating vascular wall thickening, collagen fiber disarray, and in decreasing senescence markers in aortic tissues. In vitro, SDNVs inhibited angiotensin II-induced senescence in human umbilical vein endothelial cells (HUVECs). miRNA and mRNA sequencing revealed that SDNVs downregulate CD38 expression through miR393a delivery, mediating their anti-senescence effects. Our results suggest that SDNVs significantly alleviate hypertension-associated vascular remodeling by targeting CD38 via miR393a, thus reducing endothelial cell senescence. Compared to conventional drugs like nifedipine, SDNVs offer a potentially more effective approach to vascular remodeling. These insights may guide the development of novel therapeutics for hypertension-induced vascular remodeling.