title: MicroRNA-126, -145, and -155: a therapeutic triad in atherosclerosis?
abstract: Atherosclerosis is a condition caused by lipid-induced inflammation of the vessel wall orchestrated by a complex interplay of various cell types, such as endothelial cells, smooth muscle cells, and macrophages. MicroRNAs (miRNAs) have emerged as key regulators of gene expression typically by repressing the target mRNA, which determines cell fate and function under homeostatic and disease conditions. Here, we outline the effects of miRNA-145, -126, and -155 in atherosclerosis in vivo. Downregulation of miR-145, which controls differentiation of smooth muscle cells, promotes lesion formation, whereas the endothelial cell-specific miRNA-126 signals the need for endothelial repair through its transfer from apoptotic endothelial cells in microvesicles. Elevated miR-155 levels are characteristic of proinflammatory macrophages and atherosclerotic lesions. However, the effects of miR-155 seem to be different in early and advanced atherosclerosis. The discovery of the role of these miRNAs in atherosclerosis sheds light on the current concepts of atherogenesis and may provide novel treatment options for cardiovascular diseases.
authors: Experimental Vascular Medicine, Institute for Cardiovascular Prevention, Ludwig-Maximilians-University Munich, Munich, Germany.
authors: Yuanyuan
authors: Y
authors: Wei
authors: Maliheh
authors: M
authors: Nazari-Jahantigh
authors: Peter
authors: P
authors: Neth
authors: Christian
authors: C
authors: Weber
authors: Andreas
authors: A
authors: Schober
mesh_terms: D000818:Animals; D017209:Apoptosis; D050197:Atherosclerosis / Q000235:genetics / Q000378:metabolism* / Q000473:pathology / Q000628:therapy; D002454:Cell Differentiation; D049109:Cell Proliferation; D004195:Disease Models, Animal; D042783:Endothelial Cells / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D018836:Inflammation Mediators / Q000378:metabolism; D008264:Macrophages / Q000378:metabolism; D035683:MicroRNAs / Q000378:metabolism*; D009131:Muscle, Smooth, Vascular / Q000378:metabolism* / Q000473:pathology; D032389:Myocytes, Smooth Muscle / Q000378:metabolism* / Q000473:pathology; D015398:Signal Transduction
chemical_list: D018836:Inflammation Mediators; C527111:MIRN126 microRNA, human; C541010:MIRN145 microRNA, human; C524942:MIRN155 microRNA, human; D035683:MicroRNAs