Anti-tumor effect of asiatic acid and its mechanism / 中国肿瘤生物治疗杂志

@#积雪草酸是一种天然存在的乌苏烷型五环三萜酸。近年研究表明积雪草酸能够通过多种机制途径对肿瘤细胞进行 抑制，包括抑制肿瘤细胞增殖与诱导凋亡、阻滞肿瘤细胞周期、抑制肿瘤血管细胞生成、抑制肿瘤细胞侵袭迁移、辅助化疗增强其 疗效。积雪草酸可以多靶向地抑制肿瘤细胞，但其作用靶点仍未明确；对于积雪草酸的临床前研究以及毒性研究尚少，积雪草酸 的抗肿瘤作用仍有很大的研究空间。

Inhibitory effect of asiatic acid on human liver carcinoma cells via cell cycle blockage and apoptosis induction / 中国肿瘤生物治疗杂志

@# Objective: To investigate the inhibitory effect of asiatic acid (AA) on malignant biological behaviors of human liver cancer cells and to explore the mechanism. Methods: Human liver cancer cell line (Huh7) was used as research subject, and treated with different concentrations of AA (0, 5, 10, 25, 50, 100 μmol/L) in vitro. The effect of AA on cell proliferation was determined by CCK-8 and EdU assay; the apoptosis and cell cycle distribution were detected by flow cytometry, while the expressions of apoptosis-related proteins (AKT, P-ERK 1/2 , p38, cleaved-caspase3, cleaved-caspase9, BAX, Bcl-2, AKT, ERK, p38, pro-caspase 3 and pro-caspase 9) were examined by WB. Results: AA could inhibit the proliferation of Huh7 cells in a dose- and time-dependent manner (all P<0.05). After being incubated with 10 μmol/L AA for 24 h, the proliferation of Huh7 cells was significantly inhibited (P<0.05), the apoptosis rate was significantly increased (P<0.05), and cell cycle was arrested in G1 phase (P<0.05).AAinduced p-p38 expression, but inhibited the expression of p-AKT and p-ERK in a dose-dependent manner (all P<0.05). In addition, as the concentration of AA increased, the levels of cleaved-caspase 3, cleaved-caspase 9 and BAX increased, while the level of Bcl-2 decreased (all P<0.05). Conclusion:AAinhibits the proliferation of human liver cancer cells and promotes its apoptosis, which is associated with the MAPK and PI3K/AKT pathways.