Cardiovascular Therapeutics (Jan 2020)

Isoliquiritigenin Inhibits Atherosclerosis by Blocking TRPC5 Channel Expression

  • Jie Qi,
  • Jianguo Cui,
  • Baobin Mi,
  • Xiaohong Yan,
  • Wenwen Xu,
  • Hui Ma,
  • Qingtan Zhang,
  • Fang Xu

DOI
https://doi.org/10.1155/2020/1926249
Journal volume & issue
Vol. 2020

Abstract

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Isoliquiritigenin (ISL) is a flavonoid isolated mainly from the licorice plant, a traditional Chinese herb. ISL has shown anticancer, anti-inflammatory, antioxidant, and antidiabetic activities. However, the pharmaceutical effects of ISL on atherosclerosis are seldom explored. In this study, we used apolipoprotein E (ApoE) knockout mouse model and angiotensin II- (Ang II-) stimulated vascular smooth muscle cells (VSMCs) to elucidate the pharmacological mechanism of ISL to inhibit atherosclerosis. We found that in ApoE−/− mice ISL could attenuate atherosclerotic lesion, reduce serum lipid levels, and inhibit TRPC5 expression. In vitro, ISL inhibited Ang II-stimulated proliferation of VSMCs and suppressed Ang II-induced TRPC5 and PCNA expressions in a dose-dependent fashion. In conclusion, our findings provide novel insight into the pharmacological effects of ISL on atherosclerosis and suggest that ISL is beneficial for cardiovascular protection.