白藜芦醇调控白血病JAK1/STAT3信号转导通路的研究

Regulatory Effect of Resveratrol on JAK1/STAT3 Signal Transduction Pathway in Leukemia

本研究探讨白藜芦醇抗白血病作用的具体分子机制。采用细胞体外培养和免疫组织化学、免疫沉淀法检测白血病细胞L1210 p-JAK1、p-STAT3蛋白的表达;建立了L1210白血病腹水瘤小鼠模型,用Western blot、免疫组织化学测定信号转导分子p-JAK1及p-STAT3的活性。结果表明:白藜芦醇能明显抑制JAK1/STAT3信号转导通路,以时间-剂量依赖的方式下调p-JAK1、p-STAT3表达,减弱JAK1和STAT3的酪氨酸磷酸化活性。结论:白藜芦醇体内外均具能明显调控白血病JAK1/STAT3信号转导通路,发挥抗白血病作用。

The aim of this study was to explore the molecule mechanism of resveratrol antileukaemia. The mouse lymphocytic leukemia L1210 cells were cultured and the expressions of pJAK1 and pSTAT3 protein in L1210 cells were detected by immunohistocbemistry and immunoprecipitafion in vitro. The mouse model with L1210 leukemia ascites carcinoma was established and activities of singal transduction pathway molecules pJAK1 and pSTAT3 were measured by Western blot and immunohistocbemistry assay in vitro. The results indicated that resveratrol could significantly inhibit the JAK1/STAT3 signal transduction pathway, down-regulate expressions of pJAK1 and pSTAT3 and reduce the pbospborylation of JAK1 and STAT3 in a dose-and time-dependent manner. It is concluded that the resveratrol can regulate signal transduction pathway and reduce the activation of JAK1/STAT3 tyrosine pbospborylation significantly, and therefore resveratrol shows chemotherapeutic potential to leukaemia.