穿心莲内酯对慢性乙型肝炎患者外周血单个核细胞的免疫调节作用

目的 探讨穿心莲内酯对体外培养慢性乙型肝炎(CHB)患者外周血单个核细胞(PBMC)表达Th1细胞因子IFN-γ mRNA及Th2细胞因子IL-4 mRNA和IL-10 mRNA的影响及其抗HBV的活性.方法 分别应用穿心莲内酯10mg/L(实验组)及0.1%二甲基亚砜(对照组)加入细胞培养液中刺激CHB患者PBMC.不同浓度穿心莲内酯(实验组)及阿德福韦(对照组)刺激HepG2.2.15细胞系,实时荧光定量PCR检测处理后PBMC的IFN-γ tuRNA、IL-4 mRNA及IL-10mRNA表达水平及HepG2.2.15细胞系HBV DNA复制水平.结果 穿心莲内酯10 mg/L处理16 h后,实验组PBMC的IFN-γ mRNA表达水平高于对照组(Z=-2.78,P=0.05),IL-4 mRNA及IL-10 mRNA的表达水平明显低于对照组(Z=-3.82,P<0.01),IFN一γ/IL-4 mRNA的比例较对照组明显提高(Z=-3.82,P<0.01),不同浓度穿心莲内酯对HepG2.2.15细胞系HBV DNA复制无明显影响(t=11.88,P>0.05),而阿德福韦对HBV DNA有抑制作用(t=15.95,P<0.05).结论 穿心莲内酯对CHB患者PBMC内IFN一γ mRNA、IL-4 mRNA及IL-10 mRNA的表达水平有调节作用,改善Th1/Th2平衡,对HBV DNA无直接抑制作用.

The immunoregulation of andrographolide on peripheral blood mononuclear cells from patients with chronic hepatitis B

Objective To investigate the effects of andrographolide on the expressions of Th1 cytokine interferon (IFN)-γ] mRNA and Th2 cytokines interleukin (ID-4, IL-10] mRNA of peripheral blood mononuclear cells (PBMCs) from patients with chronic hepatitis B (CHB) and its anti-hepatitis B virus (HBV) activity. Methods PBMCs from CHB patients were cultured with 10 mg/L andrographolide (experimental group) or 0.1% DMSO (control group). HepG2. 2. 15 cells were stimulated with andrographolide of different concentrations (experimental group) or adefovir (control group). The expressions of IFN-γ mRNA, IL-4 mRNA and IL-10 mRNA of PBMCs and the replication of HBV DNA in HepG2. 2. 15 cell line were detected by fluorescence quantitative PCR. Results The expression of IFN-γ mRNA in PBMCs cultured with 10 mg/L andrographolide for 16 h was higher than that in control group (Z=-2. 78, P=0. 05), and the expressions of IL-4 and IL-10mRNA in experimental group were lower than control group (Z= -3. 82, P<0. 01), while the ratio of IFN-γ/IL-4 mRNA was higher than control group (Z= - 3. 82, P<0. 01). Andrographolide with different concentrations had no effect on the replication of HBV DNA in HepG2. 2.15 cells ((=11. 88, P>0.05). However, adefovir had inhibitory effect on the replication of HBV DNA (t =15. 95,P< 0. 05). Conclusion Andrographolide can regulate the expressions of IFN-γ mRNA, IL-4 mRNA and IL-10 mRNA in PBMCs from CHB patients and improve Thl/Th2 balance, while it has no effect on the replication of HBV DNA.