Vascular remodeling is mainly characterized as intima-media thickening and plays a central role in the pathological progression for aortopathy, such as aortic aneurysm.1 Thoracic aortic dissection (TAD) isa life-threatening macro-vascular disease by virtue of its predisposition of rupture. About 40% patients with aortic dissection have notime to reach the hospital and die immediately. In the pathogenesisof TAD, vascular smooth muscle cells (VSMCs) are essential incontraction and synthesis of aortic wall in response to various cellularstimuli, which facilitates vascular remodeling.2–8 With phenotypeswitching, VSMCs alternate from contractile (differentiated) phenotype to synthetic (dedifferentiated) phenotype. DedifferentiatedVSMCs presented elevated viability in proliferation, migration, and