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《DDP顺铂敏感性的研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、2013年6月第22卷第6期ProgObstetGvneco1.Jun.2013.Vo1.22.No.6·论著·TWEAK激活自噬增强上皮性卵巢癌顺铂耐药细胞株A2780/DDP顺铂敏感性的研究王文文,邱丽华(上海交通大学医学院附属仁济医院妇产科上海市教委重点学科上海市妇科肿瘤重点实验室,上海200127)’【摘要】目的:观察TWEAK对上皮性卵巢癌顺铂耐药细胞株A2780/DDP的顺铂(DDP)耐药性的影响,并初步探讨其机制。方法:CCK8法测定不同浓度TWEAK刺激后A2780/DDP的顺铂半数细胞致死量(IC。)。Westernblot法检测TWEAK刺激A2780/
2、DDP后Beclin—l、微管结合蛋白轻链3(LC3)及成纤维细胞生长因子诱导早期反应蛋白14(Fn14)的表达水平。激光共聚焦显微镜检测绿色荧光一LC3蛋白(GFP.LC3)在A2780/DDP细胞内的分布情况。用TWEAK刺激敲除Fn14表达的A2780/DDP细胞,Westemblot法检测Beclin-1、LC3的表达。结果:CCK8检测结果显示,10、lOOng/mlTWEAK组的顺铂IC50分别为(31.940+0118)g/ml、(28.769+0.090)g/ml,均显著低于0nml组(36。3584-0.r06)g/ml(P均3、lot法结果显示,TWEAK可呈剂量和时间依赖性诱导Beclin一1、LC3及Fnl4表达上调,而特异性敲除Fnl4表达后,Beclin-1、LC3表达明显下调。激光共聚焦显微镜检测结果显示,TWEAK可诱导GFP.LC3致密斑形成。结论:TWEAK可增强人卵巢癌细胞耐药株A2780/DDP的顺铂敏感性;呈剂量和时间依赖性激活A2780/DDP的自噬活性,且主要通过与其受体Fnl4结合介导。【关键词】TWEAK;Fnl4;小干扰RNA;自噬;卵巢癌;顺铂;耐药中图分类号:R737.33文献标志码:A文章编号:1004—7379(2013)06—0433一o4TWEAKact4、ivateautophagyandenhancedthecisplasinsensitivityinovariancancercis.platinresistantcelllineA278o/DDP.ngWenwen,pih妣.DepartmentofObstetricsandGynecology,Re耐Hospital,ShanghaiJiaotongUniversitySchoofofMedicine,Shanghai200127【Abstract】Objective:T0observethecisplatinresistancedifferenceofovarianc5、ancercelllineA2780/DDPTWEAK.treated.andinvestigatethepotentialmechanism.Methods:In.vestigatethedifferenceofcisplatinhalfcelllethaldose(IC)inA2780/DDPafterTWEAK(0.10,100ng/m1)stimulated24hoursbvCCK一8.TheexpressionofBeclin.1.LC3proteinandFnl4inTWEAK.treatedA2780/DDPbydifferentdoses(0。10.100n6、m1)andtimepoints(0,12,24h).TherepresentativeimagesofGFP—LC3purmtaformationEAK.inducedwasdetectedbylaserscanningconfocalmicroscopy.TheexpressionsofBeclin.1.LC3andFnl4weredetectedinA2780/DDPrEAK.treatedandtransfectedFnl4smallinterferenceRNA(siRNA—Fn14)toblockFnl4.Results:Withtheincreasingcon7、centration(TWEAK0,10。lOOng/m1)。A2780/DDPcisplatinIC(36.358±0.106。31.9404-0.1l8,28.769.4-0.090ml,respectively)weregraduallyreduced.Thedifierencesbetween0ng/mland10n【g/mlor100ng/m1werestatisticallysignificant(P<0.05).TheexpressionsofBeclin.1。LC3andFnl4inTWEAK—tr
3、lot法结果显示,TWEAK可呈剂量和时间依赖性诱导Beclin一1、LC3及Fnl4表达上调,而特异性敲除Fnl4表达后,Beclin-1、LC3表达明显下调。激光共聚焦显微镜检测结果显示,TWEAK可诱导GFP.LC3致密斑形成。结论:TWEAK可增强人卵巢癌细胞耐药株A2780/DDP的顺铂敏感性;呈剂量和时间依赖性激活A2780/DDP的自噬活性,且主要通过与其受体Fnl4结合介导。【关键词】TWEAK;Fnl4;小干扰RNA;自噬;卵巢癌;顺铂;耐药中图分类号:R737.33文献标志码:A文章编号:1004—7379(2013)06—0433一o4TWEAKact
4、ivateautophagyandenhancedthecisplasinsensitivityinovariancancercis.platinresistantcelllineA278o/DDP.ngWenwen,pih妣.DepartmentofObstetricsandGynecology,Re耐Hospital,ShanghaiJiaotongUniversitySchoofofMedicine,Shanghai200127【Abstract】Objective:T0observethecisplatinresistancedifferenceofovarianc
5、ancercelllineA2780/DDPTWEAK.treated.andinvestigatethepotentialmechanism.Methods:In.vestigatethedifferenceofcisplatinhalfcelllethaldose(IC)inA2780/DDPafterTWEAK(0.10,100ng/m1)stimulated24hoursbvCCK一8.TheexpressionofBeclin.1.LC3proteinandFnl4inTWEAK.treatedA2780/DDPbydifferentdoses(0。10.100n
6、m1)andtimepoints(0,12,24h).TherepresentativeimagesofGFP—LC3purmtaformationEAK.inducedwasdetectedbylaserscanningconfocalmicroscopy.TheexpressionsofBeclin.1.LC3andFnl4weredetectedinA2780/DDPrEAK.treatedandtransfectedFnl4smallinterferenceRNA(siRNA—Fn14)toblockFnl4.Results:Withtheincreasingcon
7、centration(TWEAK0,10。lOOng/m1)。A2780/DDPcisplatinIC(36.358±0.106。31.9404-0.1l8,28.769.4-0.090ml,respectively)weregraduallyreduced.Thedifierencesbetween0ng/mland10n【g/mlor100ng/m1werestatisticallysignificant(P<0.05).TheexpressionsofBeclin.1。LC3andFnl4inTWEAK—tr
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