扶正培元方对Lewis肺癌小鼠免疫逃逸相关T细胞亚群比例的调控作用

目的 观察扶正培元方对Lewis肺癌荷瘤小鼠免疫逃逸相关T细胞亚群比例的调控作用.方法 按随机数字表法将30只健康C57BL/6J小鼠分为中药组、中药加化疗组、化疗组、模型组和正常对照组,每组6只.除正常对照组外,其余各组小鼠右侧腋窝皮下接种Lewis肺癌细胞悬液0.2 ml.于接种次日开始给药,中药组灌胃扶正培元方8.17 g/kg;中药加化疗组腹腔注射环磷酰胺60 mg/kg,同时灌胃扶正培元方8.17 g/kg;化疗组腹腔注射环磷酰胺60 mg/kg,灌胃等体积生理盐水;模型组和正常对照组灌胃等体积生理盐水.连续给药后13 d,采用流式细胞仪检测各组荷瘤小鼠脾细胞CD4、Foxp3、CD8、CD28细胞表达.结果 与模型组比较,化疗组及中药加化疗组瘤重(1.76±0.42)g、(1.40±0.43)g比(4.37±0.59)g]减轻(P<0.01);中药组及中药加化疗组小鼠脾细胞CD4+Foxp3+T细胞(11.25±1.69)%、(9.30±2.68)%比(14.21±1.50)%]下降(P<0.05或P<0.01).结论 扶正培元方可调节荷瘤小鼠调节性T细胞比例,改善其体内存在的免疫耐受状态.

The initial mechanism investigation in immune escape correlated T cell proportion of Lewis lung cancer by Fuzheng-Peiyuan formula

Objective To observe the initial mechanism investigation in immune escaping correlated T cell proportion of Lewis lung cancer by Fuzheng-Peiyuan formula. To provide a theoretical basis for the application of the Chinese medicine of strengthening the body resistance in clinics. Methods The healthy C57BL/6J mice were divided into six groups by the random number table: the Chinese medicine group, the Chinese medicine plus chemotherapy group, the chemotherapy group, the model group and the normal control group. There were 6 mice in each group. All the groups expect the normal control group were inoculated subcutaneously with Lewis lung cancer cell suspension 0.2 ml. The medicine given to the Chinese medicine group were orally Fuzheng-Peiyuan formula with 8.17 g/kg. The combination group was given intraperitoneal injection of cyclophosphamide 60 mg/kg and orally Fuzheng-Peiyuan formula 8.17 g/kg. The chemotherapy group received the injection of cyclophosphamide 60 mg/kg and intragastric administration of normal saline. The model group and normal control group were administered with saline. After continuous administration for 13 days, the expressions of CD4, Foxp3, CD8 and CD28 in spleen cells of tumor bearing mice were observed by flow cytometry. Results Compared with the model group, the chemotherapy group and the chemotherapy combined with Chinese traditional medicine group showed that tumor weight (1.76 ± 0.42 g, 1.40 ± 0.43 g vs. 4.37 ± 0.59 g) significantly decreased (P<0.01); and the CD4+ Foxp3+ cells of mouse spleen cells in the Chinese medicine group and Chinese medicine plus chemotherapy group (11.25% ± 1.69%, 9.30% ± 2.68% vs. 14.21% ± 1.50 %) significantly decreased (P<0.05 or P<0.01). Conclusions The result initial proved that the Chinese medicine could strengthen the body resistance, adjust the proportion of Treg and CTL in spleen T cell in tumor-bearing mouse.