2026-07-21T15:38:59Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/77482024-09-27T09:51:30Zcom_20.500.12105_19604com_20.500.12105_2051col_20.500.12105_19605

00925njm 22002777a 4500 dc Silvestre-Roig, Carlos author Fernandez, Patricia author Esteban, Vanesa author Pello, Oscar M author Indolfi, Ciro author Rodriguez, Cristina author Rodríguez-Calvo, Ricardo author Lopez-Maderuelo, Dolores author Bauriedel, Gerhard author Hutter, Randolph author Fuster, Valentin author Ibáñez, Borja author Redondo, Juan Miguel author Martinez-Gonzalez, Jose author Andres, Vicente author 2013-05 OBJECTIVE: Atherosclerosis and restenosis are multifactorial diseases associated with abnormal vascular smooth muscle cell (VSMC) proliferation. Nuclear factor-Y (NF-Y) plays a major role in transcriptional activation of the CYCLIN B1 gene (CCNB1), a key positive regulator of cell proliferation and neointimal thickening. Here, we investigated the role of NF-Y in occlusive vascular disease. APPROACH AND RESULTS: We performed molecular and expression studies in cultured cells, animal models, and human tissues. We find upregulation of NF-Y and cyclin B1 expression in proliferative regions of murine atherosclerotic plaques and mechanically induced lesions, which correlates with higher binding of NF-Y to target sequences in the CCNB1 promoter. NF-YA expression in neointimal lesions is detected in VSMCs, macrophages, and endothelial cells. Platelet-derived growth factor-BB, a main inductor of VSMC growth and neointima development, induces the recruitment of NF-Y to the CCNB1 promoter and augments both CCNB1 mRNA expression and cell proliferation through extracellular signal-regulated kinase 1/2 and Akt activation in rat and human VSMCs. Moreover, adenovirus-mediated overexpression of a NF-YA-dominant negative mutant inhibits platelet-derived growth factor-BB-induced CCNB1 expression and VSMC proliferation in vitro and neointimal lesion formation in a mouse model of femoral artery injury. We also detect NF-Y expression and DNA-binding activity in human neointimal lesions. CONCLUSIONS: Our results identify NF-Y as a key downstream effector of the platelet-derived growth factor-BB-dependent mitogenic pathway that is activated in experimental and human vasculoproliferative diseases. They also identify NF-Y inhibition as a novel and attractive strategy for the local treatment of neointimal formation induced by vessel denudation. Arterioscler Thromb Vasc Biol. 2013; 33(5):1036-45 10.1161/ATVBAHA.112.300580 1524-4636 1079-5642 Arteriosclerosis, thrombosis, and vascular biology 23430616 http://hdl.handle.net/20.500.12105/7748 Inactivation of nuclear factor-Y inhibits vascular smooth muscle cell proliferation and neointima formation