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Long noncoding RNA H19 promotes vascular remodeling by sponging let-7a to upregulate the expression of cyclin D1.
Sun, Weifeng; Lv, Junyuan; Duan, Liren; Lin, Ruoran; Li, Yugang; Li, Shanqiong; Fu, Chen; Zhao, Lin; Xin, Shijie.
Afiliação
  • Sun W; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110001, China.
  • Lv J; Department of Breast and Thyroid Surgery, The Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China.
  • Duan L; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110001, China.
  • Lin R; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110001, China.
  • Li Y; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110001, China.
  • Li S; Department of Pharmacology, School of Pharmacy, Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, China Medical University, Shenyang, 110122, China.
  • Fu C; Department of Pharmacology, School of Pharmacy, Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, China Medical University, Shenyang, 110122, China.
  • Zhao L; Department of Pharmacology, School of Pharmacy, Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, China Medical University, Shenyang, 110122, China.
  • Xin S; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110001, China. Electronic address: sjxin@cmu.edu.cn.
Biochem Biophys Res Commun ; 508(4): 1038-1042, 2019 01 22.
Article em En | MEDLINE | ID: mdl-30551879
Vascular remodeling is mainly caused by excessive proliferation of vascular smooth muscle cells (VSMCs). Noncoding RNAs (ncRNAs) have emerged as important regulators in diverse pathological processes. Previous work has shown the functions and mechanisms of long noncoding RNA H19 (LncRNA H19) on VSMCs. As long noncoding RNAs (lncRNAs) are complex in their mechanisms of action, the aim of the study is to identify if there are any other molecular mechanisms of LncRNA H19 on VSMCs. In vivo studies demonstrated that cyclin D1 was overexpressed in neointima of balloon-injured artery. In vitro studies identified that the overexpression of LncRNA H19 promoted VSMCs proliferation and cyclin D1 upregulation. On the contrary, cellular proliferation and expression of cyclin D1 were inhibited in VSMCs after infection with let-7a. Furthermore, luciferase reporter assays and RNA pull-down assays were used to explore the regulatory mechanism, we found that LncRNA H19 functioned as a competing endogenous RNA (ceRNA) by sponging let-7a to promote the expression of the target gene cyclin D1. In conclusion, LncRNA H19 positively regulated cyclin D1 expression through directly binding to let-7a in VSMCs. Our findings provide new insight into the mechanism of LncRNA H19 in VSMCs proliferation and vascular remodeling, and further indicate the implications of LncRNA H19 in the diagnosis and treatment of vascular proliferative diseases.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Regulação para Cima / Ciclina D1 / MicroRNAs / RNA Longo não Codificante / Remodelação Vascular Tipo de estudo: Prognostic_studies Limite: Animals / Humans / Male Idioma: En Revista: Biochem Biophys Res Commun Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Regulação para Cima / Ciclina D1 / MicroRNAs / RNA Longo não Codificante / Remodelação Vascular Tipo de estudo: Prognostic_studies Limite: Animals / Humans / Male Idioma: En Revista: Biochem Biophys Res Commun Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China