摘要
目的研究辐射诱导及逆转药物环孢霉素A(CsA)、干扰素α(IFNα)对鼻咽癌细胞CNE1、CNE2多药耐药表达的影响。方法通过体外辐射处理诱导鼻咽癌细胞CNE1、CNE2,流式细胞术、RTPCR分析辐射诱导前后Pgp、MRP、TOPⅡ、GSTπ在蛋白、mRNA水平表达的改变。同时,研究CsA、IFNα逆转耐药处理对放疗诱导的多药耐药的影响。结果辐射诱导后CNE1、CNE2细胞Pgp、MRP、GSTπ在蛋白、mRNA水平表达上调,辐射后给予CsA、IFN处理可以逆转辐射诱导的Pgp、MRP蛋白表达上调。结论辐射可以诱导鼻咽癌细胞CNE1、CNE2出现多药耐药,而CsA、IFN可以逆转辐射诱导的多药耐药。
Objective To study multiple-drug resistance expression of CNE1 and CNE2 cell lines induced by radiation and its reversal by cyclosporine A and interferon. Methods Drug-resistant CNE1 and CNE2 cell lines were induced by radiation, and expression of P-gp, MRP, TOPⅡ and GST-π on protein and rnRNA level were analyzed by flow cytometry and reverse transcription-polymerase chain reaction methods before and after radiation. At the same time, effect of cyclosporine A and interferon on multiple-drug resistance expression induced by radiation was studied. Results The results showed that expression of Pgp, MRP and GST-π proteins on CNE1 and CNE2 cell lines were up-regulated by radiation, and cyclosporine A and interferon could reverse the up-regulation of P-gp and MRP proteins induced by radiation. Conclusion Radiation can induce multiple-drug resistance in CNE1 and CNE2 cell lines, and it can be reversed by cyclosporine A and interferon.
出处
《解放军医学杂志》
CAS
CSCD
北大核心
2005年第11期997-999,共3页
Medical Journal of Chinese People's Liberation Army
基金
2003年广东省自然科学基金资助课题(编号33915)
关键词
鼻咽肿瘤
辐射
抗药性
多药
环孢菌素
干扰素Α
nasopharyngeal neoplasms
radiation
multidrug resistance
cyclosporine A
interferon-alpha
