Key points are not available for this paper at this time.
Atherosclerosis (AS) is a complex pathophysiological process. Evidence has demonstrated that abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) play an essential role in AS. Calponin 3 (CNN3) is implicated in the pathogenesis of various diseases by modulating cell proliferation and migration. However, the roles of CNN3 in VSMCs and AS remains elusive. Experiments were performed in tissues and in vitro to investigate the role of CNN3 in the pathophysiology of AS. The expression of CNN3 in aortic plaques was determined using immunohistochemistry, and the serum CNN3 levels were quantified by enzyme-linked immunosorbent assay (ELISA). The diagnostic potential of CNN3 was evaluated by receiver operating characteristic (ROC) curve analysis. To in vitro functions of CNN3 were analyzed by EdU assays, CCK-8 assays, scratch wound assays, transwell assays, qRT-PCR and western blotting analyses. In this study, we demonstrated CNN3 was significantly upregulated in plaques compared to normal intima tissue. Patients with coronary artery disease were found to have higher CNN3 levels than healthy individuals and was positively correlated with the SYNTAX score of patients. The ROC curve for CNN3 as a diagnostic biomarker reached 0.787. In vitro experiments showed that CNN3 promoted VSMCs proliferation and migration by β-catenin signaling pathway. All the data indicated that CNN3 promoted VSMCs proliferation and migration by modulating the β-catenin signaling to accelerate the AS process. Serum level of CNN3 serves as a promising diagnostic biomarker for AS.
Zhang et al. (Sat,) studied this question.