【摘 要】
：
μs脉冲电场诱导细胞产生的可逆电穿孔效应和不可逆电穿孔效应已有一定研究,但其所诱导的细胞凋亡效应却往往被忽略,诱导凋亡效应的脉冲电场与产生可逆/不可逆电穿孔效应脉冲
【机 构】
：
重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆医科大学附属第二医院
论文部分内容阅读
μs脉冲电场诱导细胞产生的可逆电穿孔效应和不可逆电穿孔效应已有一定研究,但其所诱导的细胞凋亡效应却往往被忽略,诱导凋亡效应的脉冲电场与产生可逆/不可逆电穿孔效应脉冲电场的剂量关系更是鲜有研究.为了解这些关系,以人宫颈痛细胞系Hela为实验对象,综合运用PI示踪穿孔、CCK-8法检测活性及流式细胞术测定凋亡3种实验手段,研究了μs脉冲电场所诱导的可逆电穿孔、不可逆电穿孔及凋亡3种效应与外加脉冲场强的依赖关系.研究表明,随着外加脉冲场强的增加,细胞将依次出现电穿孔现象、凋亡现象和不可逆电穿孔现象并得出了3种效应所对应的场强取值范围(即场强窗口参数).通过建立细胞等效电路模型以及定件分析细胞膜及线粒体膜上跨膜电压与外加电场的关系,较好地解释了实验现象及其可能机理.
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