| First Author | Li H | Year | 2019 |
| Journal | Lipids Health Dis | Volume | 18 |
| Issue | 1 | Pages | 62 |
| PubMed ID | 30871555 | Mgi Jnum | J:293395 |
| Mgi Id | MGI:6445186 | Doi | 10.1186/s12944-019-1006-7 |
| Citation | Li H, et al. (2019) LncRNA MALAT1 modulates ox-LDL induced EndMT through the Wnt/beta-catenin signaling pathway. Lipids Health Dis 18(1):62 |
| abstractText | BACKGROUND: Endothelial-to-mesenchymal transition (EndMT) plays significant roles in atherosclerosis, but the regulatory mechanisms involving lncRNAs remain to be elucidated. Here we sort to identify the role of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in ox-LDL-induced EndMT. METHODS: The atherosclerosis model was established by feeding ApoE(-/-) mice with high-fat diet, and the levels of lncRNA MALAT1 in mouse arterial tissue were detected by RT-qPCR. Cell model was established by treating human umbilical vein endothelial cells (HUVECs) with ox-LDL, and the levels of EndMT markers, such as CD31, vWF, alpha-SMA and Vimentin and lncRNA MALAT1 levels were detected and their correlations were analyzed. The role of MALAT1 in EndMT and its dependence on Wnt/beta-catenin signaling pathway was further detected by knocking down or overexpressing MALAT1. RESULTS: MALAT1 was upregulated in high-fat food fed ApoE(-/-) mice. HUVECs treated with ox-LDL showed a significant decrease in expression of CD31 and vWF, a significant increase in expression of alpha-SMA and vimentin, and upregulated MALAT1. An increased MALAT1 level facilitated the nuclear translocation of beta-catenin induced by ox-LDL. Inhibition of MALAT1 expression reversed nuclear translocation of beta-catenin and EndMT. Moreover, overexpression of MALAT1 enhanced the effects of ox-LDL on HUVEC EndMT and Wnt/beta-catenin signaling activation. CONCLUSIONS: Our study revealed that the pathological EndMT required the activation of the MALAT1-dependent Wnt/beta-catenin signaling pathway, which may be important for the onset of atherosclerosis. TRIAL REGISTRATION: Not applicable. |
