蟾毒灵抑制NF-κB引起人食管癌细胞凋亡

摘要

Objective To observe the effect of Bufalin on controlling ECA109 cells , and to explore its potential anti-tumor mechanism. Method The effect of Bufalin on the proliferation of human esophageal cancer ECA109 cells was evaluated by CCK-8 assay and it effects on apoptosis of esophageal cancer ECA109 cells were determined by flow cytometry (FCM). Protein expressions of NF-κBp65, ERK, PERK1/2 and Caspase-3, Cleaved Caspase-3, PARP, Cleaved PARP in esophageal cancer ECA109 cell were observed through Western blot. Results The proliferation of human esophageal cancer ECA109 cells was significantly inhibited in bufalin group in a time- and concentration-dependent manner. Bufalin can induce the apoptosis in human esophageal ECA109 cells. Results of Western blot showed the protein expressions of apoptosis-related protein Cleaved Caspas-3 and Cleaved PARP in esophageal cancer ECA109 cells could be markedly up-regulated by Bufalin , but p-ERK1/2, NF-κBp65 in esophageal cancer ECA109 cells could be markedly down-regulated by Bufalin. Conclusion Bufalin can potently inhibit the growth of esophageal cancer ECA109 cells and the potential anti-tumor mechanism might be involved in inhibiting ERK/ NF-κB signal pathway.%目的：观察蟾毒灵对人食管癌 ECA109细胞生长的影响，探讨蟾毒灵抑制食管癌细胞抗肿瘤作用的可能机制。方法：CCK-8法测定蟾毒灵对人食管癌ECA109细胞增殖的影响；流式细胞术检测蟾毒灵对细胞凋亡的影响；Western blot法检测蟾毒灵作用于人食管癌ECA109后，NF-κBp65，ERK，P-ERK1／2及Caspase-3、Cleaved Caspase-3，PARP、Cleaved PARP蛋白表达的变化情况。结果：蟾毒灵对人食管癌ECAl09细胞有明显抑制增殖的作用，并呈现出时间和浓度依赖性；蟾毒灵能诱导ECA109细胞凋亡；蟾毒灵能使 ECA109细胞中凋亡相关蛋白Cleaved Caspas-3及 Cleaved PARP 蛋白表达随着药物浓度的增加而明显增加，p-ERK1／2，NF-κBp65蛋白的表达随着药物浓度的增加而减少。结论：蟾毒灵可显著抑制人食管癌ECA109细胞的增殖，促使肿瘤细胞凋亡，其作用机制可能与抑制ERK／NF-κB通路有关。