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针对NHE-1基因的反义核酸诱导人肺癌细胞酸化及凋亡的研究 被引量:3

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摘要 研究Na+/H+交换泵(Na+/H+exchanger,NHE)基因家族第一亚型NHE-1基因表达在肿瘤细胞内pH(pHi)调节及凋亡调控中的作用。方法:在细胞培养中,以针对NHE-1基因的硫代型反义核酸处理人肺腺癌A549细胞,采用荧光标记法研究反义核酸对细胞的酸化效应;细胞凋亡原位检测法研究反义核酸诱导细胞凋亡。结果:A549细胞酸化效应与NHE-1反义核酸呈一定的剂量效应关系,当反义核酸浓度为20μM时,可导致pHi下降至6.55,并诱发细胞凋亡,在处理时间为24,48,72小时,其凋亡发生率分别为30.1%,91.2%,99.6%。结论:①细胞酸化(pHi下降至6.55)能诱发人肺癌细胞凋亡;②人肺癌细胞NHE-1基因表达能通过阻止其胞内酸化。
出处 《四川医学》 CAS 1998年第6期460-462,共3页 Sichuan Medical Journal
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