目的:研究消癌解毒方(Xiaoai Jiedu Recipe,XJR)对肝癌H22细胞小鼠移植瘤的抑制作用及其可能的机制。方法:建立小鼠H22移植瘤模型,分对照组和XJR低、中、高剂量(10、30、90g/kg)组及顺铂(0.001g/kg)组进行治疗,检测各组移植瘤生长情况,H-E染色观察各组移植瘤组织的病理改变。流式细胞术检测各组移植瘤细胞周期及凋亡率,ELISA法测定各组移植瘤小鼠外周血VEGF水平。结果:与对照组比较,XJR各剂量以及顺铂对H22移植瘤的生长均具有显著的抑制作用,抑瘤率分别为24.5%、42.8%、21.1%、58.6%(P〈0.05或P〈0.01)。病理观察见中剂量XJP组和顺铂组移植瘤组织大片状坏死,有明显染色质固缩环。中剂量XJR和顺铂将移植瘤组织细胞阻滞于G0/G1期(P〈0.05),S期细胞数明显减少(P〈0.05)。中剂量XJR组移植瘤细胞的凋亡率与顺铂组相当[(60.52±6.40)%vs(71.32±16.02)%,P〉0.05]。中、高剂量XJR组和顺铂组小鼠外周血VEGF水平均显著降低[(104.3±6.1)、(105.8±7.2)、(88.6±4.3)vs(120.7±12.6)ng/ml,P〈0.05或P〈0.01]。结论:XJR能抑制H22小鼠移植瘤的生长,促进移植瘤细胞凋亡、抑制VEGF的产生可能是其抗癌作用机制之一。
Objective:To study the inhibitory effects of Xiaoai Jiedu Recipe(XJR) against transplanted hepatocarcinoma H22 tumors in mice and the related mechanism. Methods:H22-transplanted tumor mouse models were established and were divided into control group,XJR treatment groups (10,30,90 g/kg),and cisplatin treatment group. The growth of tumors in different groups was measured,and pathology changes of transplanted tumor tissues in different groups were examined by H-E staining. Flow cytometry was applied to examine cell cycle and sub-diploid apoptosis rate of transplanted tumor cells,and VEGF levels in the peripheral blood of mice were measured by ELISA. Results:Compared with control group,different XJR groups and the cisplatin group significantly inhibited growth of H22-transplanted tumors (24.5%,42.8%,21.1,58.6% vs 0,P〈0.05,P〈0.01),cells in XJR groups showing massive necrosis and obvious chromosome condensation. Medium-dosage XJR and cisplatin blocked transplanted tumor cells in G0/G1 phase (P〈0.05),and the cells in S phase were significantly reduced (P〈0.05). The sub-diploid apoptosis rate of transplanted tumor cells in medium-doseage XJR group was similar to that in cisplatin group (60.52±6.40 vs 71.32±16.02,P〉0.05). Peripheral VEGF levels were significantly lower in the medium-,large-dosage XJR groups and cisplatin group than in the control group (104.3±6.1,105.8±7.2,88.6±4.3 vs 120.7±12.6,P〈0.05,P〈0.01). Conclusion:Xiaoai Jiedu Recipe can inhibit the growth and promote apoptosis of H22-transplanted tumor cells,and inhibition of VEGF may be one of the mechanisms for the anticancer effect.