International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(8), P. 3722 - 3722
Published: April 15, 2025
Salt-sensitive hypertension (SSH) is closely associated with arterial inflammation, yet its molecular mechanisms remain unclear. In this study, we utilized deoxycorticosterone acetate (DOCA)-salt-induced hypertensive mice, which exhibited elevated blood pressure and significant inflammation. Single-cell RNA sequencing (scRNA-seq) identified interferon regulatory factor 5 (IRF5) downstream targets, signal transducer activator of transcription (STAT), as key regulators these inflammatory changes. vivo, IRF5 levels were significantly in the DOCA group, while STAT1 STAT2 protein comparable to those normal salt group. However, nuclear phosphorylated (pSTAT1) (pSTAT2) markedly higher Furthermore, scRNA-seq analysis showed increased expression endothelial cells (ECs) both human mouse aorta samples. vitro, knockdown artery ECs led a reduction pSTAT1 pSTAT2 expression. These results suggest that promotes phosphorylation, enabling their translocation. Additionally, indicated positive correlation between cell-specific molecule 1 (ESM1) STAT1/STAT2. Using UCSC JASPAR databases, multiple binding sites for STAT1::STAT2 dimer on ESM1 promoter. Luciferase reporter assays revealed enhanced following pSTAT1::pSTAT2 binding, pinpoint potential sites. Chromatin Immunoprecipitation Quantitative PCR (ChIP-qPCR) further confirmed specific findings highlight critical role IRF5-pSTAT1::pSTAT2-ESM1 pathway pathogenesis SSH therapeutic targets.
Language: Английский