Yangfei Kongliu Formula, a compound Chinese herbal medicine, combined with cisplatin, inhibits growth of lung cancer cells through transforming growth factor-β1 signaling pathway

OBJECTIVE： To investigate the tumor inhibition effect of Yangfei Kongliu Formula （YKF）, a compound Chinese herbal medicine, combined with cisplatin （DDP） and its action mechanisms. METHODS： C57BL/6 mice with Lewis lung carcinoma were divided into six groups： control group （C）, DDP group （2 mg/kg, DDP）, low-dose YKF group （2.43 g/kg, L）, high-dose YKF group （24.3 g/kg, H）, low- dose YKF combined with DDP group （L ＋ DDP） and high-dose YKF combined with DDP group （H ＋ DDP）. Transforming growth factor-β1 （TGF-β1）, mothers against decapentaplegic homolog 3 （Smad3） and Smad7 levels were measured with quantitative real-time polymerase chain reaction （qPCR）, Western blotting and immunohistochemistry. An enzyme-linked immunosorbent assay was used to analyze the expressions of interleukin-2 （IL-2） and tumor necrosis factor-α （TNF-α）. RESULTS： YKF combined with DDP significantly inhibited the growth and metastasis of tumors relative to the control group, and YKF groups （P 〈 0.05）. There was no significant difference between high-dose YKF group and low-dose YKF group （P 〉 0.05）. We also found that the expression levels of TGF-β1 and Smad3 were both significantly decreased by YKF relative to the control group （P 〈 0.05）. Furthermore, after treatment with YKF combined with DDP, the expression levels of TGF-β1 and Smad3 were decreased but the expression level of Smad7 was increased relative to the DDP group （P 〈 0.05）. Compared to the DDP group, the combination of YKF and DDP enhanced the effect of tumor inhibition （P 〈 0.05）, showing obvious synergy between YKF and DDP. Treatment with DDP or YKF decreased serum levels of IL-2 and TNF-α relative to the control group （P 〈 0.05）. Furthermore, the expression levels of IL-2 and TNF-α were significantly decreased when treated with YKF in combination with DDP. Co-treatment with YKF and DDP significantly inhibited tumor growth, decreased the expressions of TGF-β1, Smad3, IL-2 and TNF-α and increased the expression of Smad7; these differences were significant relative to both YKF groups and the control group （P 〈 0.05）. CONCLUSION： YKF can inhibit tumor growth synergistically with DDP, mainly through the TGF-β1 signaling pathway.

伤科接骨片对实验型骨折愈合过程中TGF-β_1的影响

目的 观察应用伤科接骨片后骨折愈合过程中TGF β1(转化生长因子 β1)的变化 ,以进一步探讨其促进骨折愈合的机理。方法 72只日本大耳白兔随机分为实验组和对照组 ,每组各 36只。在兔桡骨处用手术方法制备骨折模型 ,术后即日起试验组给与伤科接骨片 ,15 0mg/kg/d。于术后 3天、1周、2周、3周、4周、6周每组分别处死 6只兔 ,取标本 ,采用免疫组化方法进行染色 ,光镜下观察 ,并利用图像分析的方法测定其TGF β1表达强度。结果 在骨折后的同一时间 ,实验组和对照组的骨痂组织中TGF β1的染色有差异 ,实验组的峰值比对照组约提前一周出现 ,且比对照组的峰值高。结论 伤科接骨片可以调节骨折愈合过程中TGF β1的合成和分泌 ,从而促进骨折的愈合。TGF β1可能是伤科接骨片对骨折愈合过程影响的一个作用环节。

参麦液对早期退变腰椎间盘组织中NO、TGF-β_1表达的影响

目的:探讨参麦液在延缓椎间盘退变中的作用。方法:对6例年轻腰椎间盘突出患者的椎间盘组织采取体外细胞培养,随机分为4组:对照组、1%参麦液组、2 . 5 %参麦液组、5 %参麦液组,用分光光度法测定各组培养上清液中NO含量与NOS活性,并采用免疫组化的研究方法测定椎间盘细胞TGF β1表达。结果:对照组退变椎间盘组织产生的NO为(14 4. 1±9 .7) μmol/L ,NOS为(6 . 2±0 .6 )U/ml,高于参麦液组,有统计学差异。参麦液组中的椎间盘细胞呈不同程度的棕黄色,对照组则呈阴性改变。结论:参麦液可降低椎间盘内炎症因子的浓度,促进椎间盘细胞TGF -β1表达,有效减缓椎间盘组织的退变。