载紫杉醇超声微泡造影剂对人肝癌HepG2细胞周期及形态的影响

目的 探讨超声辐照紫杉醇微泡造影剂,对人肝癌细胞株HepG2细胞周期的影响和形态学变化.方法 体外培养人肝癌HepG2细胞,将细胞分4组,即空白对照组,紫杉醇组,超声空白微泡组,超声载紫杉醇微泡组.流式细胞仪检测不同处理组细胞周期分布,透射电镜观察不同处理组形态学变化. 结果 超声载紫杉醇微泡组细胞阻滞在G2/M期;超声载紫杉醇微泡能够诱导肿瘤细胞发生凋亡,并有凋亡小体形成.结论 超声辐照载紫杉醇微泡造影剂对人肝癌细胞株HepG2有明显阻滞作用,并诱导肿瘤细胞发生凋亡.

Effects of paclitaxel loaded ultrasound contrast agents on cell cycles and ultrastructural features of HepG2 cells

OBJECTIVES: To investigate the effects of paclitaxel loaded ultrasound contrast agents on cell cycles and ultrastructural features of HepG2 cells. METHODS: HepG2 cells were cultured, and divided into a blank control group, a paclitaxel group, an ultrasound contrast agents group, and a paclitaxel loaded ultrasound contrast agents group. Cell cycles of the four groups were detected by flow cytometry, and the ultrastructural changes of the cells were observed under a transmission electron microscope. RESULTS: Paclitaxel loaded ultrasound contrast agents blocked the HepG2 cells at their G2/M phases, and it also induced more apoptosis of the HepG2 cells. CONCLUSIONS: Paclitaxel loaded ultrasound contrast agents can block HepG2 cells at the G2/M phase and induce apoptosis of the cells.