Xu LL, Luo WS, Tan N, Xu Q, Xu B, Zhu-Ge FY. Total flavonoids of litchi suppress proliferation of LX2 human hepatic stellate cells by upregulating p27 expression.
Shijie Huaren Xiaohua Zazhi 2015;
23:539-546. [DOI:
10.11569/wcjd.v23.i4.539]
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Abstract
AIM: To investigate the effect of total flavonoids of litchi (TFL) on the proliferation of LX2 human hepatic stellate cells and to explore the underlying mechanism.
METHODS: LX2 cells treated with different concentrations (7.8125, 15.6250, 31.2500, 62.5000, and 125.0000 µg/mL) of TFL were examined for cell growth inhibition using CCK-8. Flow cytometry was used to analyze the changes in cell cycle distribution of LX2 cells. The expression of p27 mRNA and protein in LX2 cells was determined by real-time quantitative PCR and Western blot, respectively.
RESULTS: Exposure to TFL caused significant dose- and time-dependent inhibition of LX2 cell proliferation. TFL induced S-phase cell cycle arrest as shown by flow cytometric analysis. In addition, expression of p27 mRNA and protein in LX2 cells was upregulated in the treatment groups.
CONCLUSION: TFL treatment inhibits LX2 cell proliferation and arrests cells at S phase, and the mechanism may be associated with the upregulation of p27 expression.
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