CUT&Tag Profiling Reveals Arid3a-Dependent Epigenetic Control in Vascular Smooth Muscle Cells

This study employs CUT&Tag technology to meticulously map the chromatin-binding landscape of the transcription factor Arid3a in Vascular Smooth Muscle Cells (VSMCs), thereby highlighting its crucial function in the intricate regulation of gene expression. The CUT&Tag assay illuminates Arid3a's presence at key promoter regions, exerting a profound impact on transcriptional modulation and suggesting the epigenetic governance of 260 genes. By integrating RNA-seq with sophisticated bioinformatic analyses, our research elucidates Arid3a's integral role in fundamental cellular activities, particularly in the dynamics of actin filaments, as well as its potential regulatory nexus with critical pathways, including cAMP signaling and calcium signaling. These insights unveil the intricate molecular choreography of Arid3a in the functioning of VSMCs and shed new light on its role in the development of abdominal aortic aneurysm (AAA). Overall design: We utilized RNA interference technology to knockdown Arid3a in Vascular Smooth Muscle Cells (VSMCs), successfully establishing several Arid3a knockdown cell lines.In this study, we utilized CUT&Tag technology to functionally map the Arid3a protein-DNA interactions within the chromatin of Vascular Smooth Muscle Cells (VSMCs). The CUT&Tag assay was performed on Arid3a knockdown cells to specifically capture and sequence the DNA fragments associated with Arid3a binding sites. This method allows for the identification of direct genomic targets regulated by Arid3a, providing a detailed view of its chromatin architecture role.