Icariin inhibits oxidized low-density lipoprotein-induced proliferation of vascular smooth muscle cells by suppressing activation of extracellular signal-regulated kinase 1/2 and expression of proliferating cell nuclear antigen

  • Authors:
    • Yanwu Hu
    • Kai Liu
    • Mengtong Yan
    • Yang Zhang
    • Yadi Wang
    • Liqun Ren
  • View Affiliations

  • Published online on: January 27, 2016     https://doi.org/10.3892/mmr.2016.4813
  • Pages: 2899-2903
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Abstract

Icariin, a flavonoid isolated from the traditional Chinese herbal medicine Epimedium brevicornum Maxim, has been shown to possess anti-inflammatory, anti‑oxidant and anti-atherosclerotic activities in vivo and in vitro. The aim of the present study was to investigate the effects of icariin on oxidized low‑density lipoprotein (ox-LDL)-induced proliferation of vascular smooth muscle cells (VSMCs) and the possible underlying mechanism. VSMCs were cultured and pre‑treated with various concentrations of icariin (0, 10, 20 or 40 µm) prior to stimulation by ox‑LDL (50 µg/ml). Cell proliferation was evaluated by an MTT assay. Flow cytometry was used to study the influence of icariin on the cell cycle. Proliferating cell nuclear antigen (PCNA) expression and phosphorylation levels of extracellular signal-regulated kinase (ERK)1/2 were detected by western blot analysis. The results indicated that icariin significantly inhibited ox‑LDL‑induced proliferation of VSMCs and phosphorylation of ERK1/2. Furthermore, icariin also blocked the ox‑LDL‑induced cell‑cycle progression at G1/S‑interphase and downregulated the expression of PCNA in VSMCs. In conclusion, the present study indicated for the first time that icariin reduced the amount of ox‑LDL‑induced proliferation of VSMCs through suppression of PCNA expression and inactivation of ERK1/2.
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March-2016
Volume 13 Issue 3

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Hu Y, Liu K, Yan M, Zhang Y, Wang Y and Ren L: Icariin inhibits oxidized low-density lipoprotein-induced proliferation of vascular smooth muscle cells by suppressing activation of extracellular signal-regulated kinase 1/2 and expression of proliferating cell nuclear antigen. Mol Med Rep 13: 2899-2903, 2016.
APA
Hu, Y., Liu, K., Yan, M., Zhang, Y., Wang, Y., & Ren, L. (2016). Icariin inhibits oxidized low-density lipoprotein-induced proliferation of vascular smooth muscle cells by suppressing activation of extracellular signal-regulated kinase 1/2 and expression of proliferating cell nuclear antigen. Molecular Medicine Reports, 13, 2899-2903. https://doi.org/10.3892/mmr.2016.4813
MLA
Hu, Y., Liu, K., Yan, M., Zhang, Y., Wang, Y., Ren, L."Icariin inhibits oxidized low-density lipoprotein-induced proliferation of vascular smooth muscle cells by suppressing activation of extracellular signal-regulated kinase 1/2 and expression of proliferating cell nuclear antigen". Molecular Medicine Reports 13.3 (2016): 2899-2903.
Chicago
Hu, Y., Liu, K., Yan, M., Zhang, Y., Wang, Y., Ren, L."Icariin inhibits oxidized low-density lipoprotein-induced proliferation of vascular smooth muscle cells by suppressing activation of extracellular signal-regulated kinase 1/2 and expression of proliferating cell nuclear antigen". Molecular Medicine Reports 13, no. 3 (2016): 2899-2903. https://doi.org/10.3892/mmr.2016.4813