Atherosclerosis is a disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls, by definition you can't induce atherosclerosis in the cell lines but you can induce the marker or components of atherosclerosis in the cell line, in addition there may be some 3D model of atherosclerosis available that you can use to study the lesions.
Check this for example; Article A Human Ex Vivo Atherosclerotic Plaque Model to Study Lesion Biology