2. Academic Validation
  3. Tanshinone ⅡA inhibits VSMC inflammation and proliferation in vivo and in vitro by downregulating miR-712-5p expression

Tanshinone ⅡA inhibits VSMC inflammation and proliferation in vivo and in vitro by downregulating miR-712-5p expression

  • Eur J Pharmacol. 2020 Aug 5;880:173140. doi: 10.1016/j.ejphar.2020.173140.
Yan Qin 1,  Bin Zheng 2,  Gao-Shan Yang 3,  Jing Zhou 4,  Hao-Jie Yang 2,  Zi-Yuan Nie 5,  Tian-Rui Wang 6,  Xin-Hua Zhang 2,  Hong-Ye Zhao 2,  Jian-Hong Shi 7,  Jin-Kun Wen 8
Affiliations

Affiliations

  • 1 Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang, China; Department of Central Laboratory, Affiliated Hospital of Hebei University, Baoding, China.
  • 2 Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang, China.
  • 3 Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang, China; Department of Biochemistry and Molecular Biology, Hebei University of Chinese Medicine, Shijiazhuang, China.
  • 4 Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang, China; Department of Endocrine, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
  • 5 Department of Hematology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
  • 6 Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China.
  • 7 Department of Central Laboratory, Affiliated Hospital of Hebei University, Baoding, China.
  • 8 Department of Biochemistry and Molecular Biology, The Key Laboratory of Neural and Vascular Biology, China Administration of Education, Hebei Medical University, Shijiazhuang, China. Electronic address: wjk@hebmu.edu.cn.
PMID: 32387370 DOI: 10.1016/j.ejphar.2020.173140
Abstract

The inflammation and proliferation of vascular smooth muscle cells (VSMCs) are the basic pathological feature of proliferative vascular diseases. Tanshinone ⅡA (Tan ⅡA), which is the most abundant fat-soluble element extracted from Salvia miltiorrhiza, has potent protective effects on the cardiovascular system. However, the underlying mechanism is still not fully understood. Here, we show that Tan ⅡA significantly inhibits neointimal formation and decreases VSMC inflammation by upregulating the expression of KLF4 and inhibiting the activation of NFκB signaling. Using a MicroRNA array analysis, we found that miR-712-5p expression is significantly upregulated in tumor necrosis factor alpha (TNF-α)-treated VSMCs. Loss- and gain-of-function experiments revealed that transfection of miR-712-5p mimic promotes, whereas depletion of miR-712-5p suppresses TNF-α-induced VSMC inflammation, leading to amelioration of intimal hyperplasia induced by carotid artery ligation. Moreover, depletion of miR-712-5p by its antagomir largely abrogates TNF-α-induced VSMC proliferation. Our findings suggest that miR-712-5p mediates the stimulatory effect of TNF-α on VSMC inflammation, and that Tan ⅡA inhibits VSMC inflammation and proliferation in vivo and in vitro by suppression of miR-712-5p expression. Targeting miR-712-5p may be a novel therapeutic strategy to prevent proliferative vascular diseases.

Keywords

Inflammation; Proliferation; Tanshinone ⅡA; VSMCs; miR-712-5p.

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