Induction of apoptosis of liver cancer cells by nanosecond pulsed electric fields (nsPEFs)

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• 作者：Ling He ; Deyou Xiao ; Jianguo Feng ; Chenguo Yao ; Liling Tang
• 关键词：Cellular morphology ; Mitochondrial membrane potential ; Calcium ; Electric pulses ; HepG2
• 刊名：Medical Oncology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：34
• 期：2
• 全文大小：
• 刊物主题：Oncology; Hematology; Pathology; Internal Medicine;
• 出版者：Springer US
• ISSN：1559-131X
• 卷排序：34

文摘

The application of nanosecond pulsed electric fields (nsPEFs) is a novel method to induce the death of cancer cells. NsPEFs could directly function on the cell membrane and activate the apoptosis pathways, then induce apoptosis in various cell lines. However, the nsPEFs-inducing-apoptosis action sites and the exact pathways are not clear now. In this study, nsPEFs were applied to the human liver cancer cells HepG2 with different parameters. By apoptosis assay, morphological observation, detecting the mitochondrial membrane potential (ΔΨ_m), intracellular calcium ion concentration ([Ca2+]i) and the expressions of key apoptosis factors, we demonstrated that nsPEFs could induce the morphology of cell apoptosis, the change in ΔΨ_m, [Ca2+]i and the upregulation of some key apoptosis factors, which revealed the responses of liver cancer cells and indicated that cells may undergo apoptosis through the mitochondria-dependent pathway after nsPEFs were applied.