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时间:2020-05-15
《黄芩素对骨肉瘤细胞增殖和侵袭的抑制作用及机制.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、342细胞与分子免疫学杂志(ChinJCellMolImmune1)2015,31(3·论著·文章编号:1007—8738(2015)03—0342—04黄芩素对骨肉瘤细胞增殖和侵袭的抑制作用及机制唐志斌,李春,陈志伟(南华大学第一附属医院骨外科,湖南衡阳421001)【摘要]目的探讨黄芩素对骨肉瘤细胞增殖、侵袭的影响及其相关机制。方法以骨肉瘤MG-63细胞为研究对象,分别加入20的培养液(对照组)或(0、100、200)~moVL黄芩素溶液处理细胞48h,应用MTF法分析细胞增殖情况,通过Transwell侵袭实验检测细胞侵袭能力,荧光
2、实时定量PCR测定ezrinmRNA表达,采用Westernblot法检测ezrin蛋白及磷酸化ezrin(p-ezrin)蛋白表达,利用原位末端标记法(TUNEL)测定肿瘤细胞凋亡指数(AI)。结果(100、200)~moVL黄芩素组细胞增殖抑制率较0moL/L黄芩素组升高,且200~moVL黄芩素组细胞增殖抑制率明显高于100~moVL黄芩素组。随着黄芩素浓度的增加,平均穿膜细胞数以及ezrinmRNA、ezrin蛋白、p-ezrin蛋白表达水平逐渐降低,而AI逐渐增加,与对照组和0~snol/L黄芩素组比较,差异均有显著降低,而0p
3、xaoVL黄芩素组与对照组相比无明显变化。结论黄芩素能够抑制骨肉瘤MG-63细胞增殖、侵袭,其机制可能与抑制ezrin蛋白表达和活性及促进肿瘤细胞凋亡有关。[关键词]黄芩素;骨肉瘤;ezrin蛋白;凋亡[中图分类号]R392.12,Q279,R285.5[文献标志码]AInhibitoryefectofbaicaleinontheproliferationandinvasionofosteosarcomacellsandmechanismTANGZhibin,LIChun,CHENZhiweiDepartmentofOrthopedics
4、,FirstAfiliatedHospital,UniversityofSouthChina,Hengyang421001,ChinaIAbstractIObjectiveToexploretheefectofbaicaleinontheproliferationandinvasionofosteosarcomacellsandjtsrelatedmechanism.MethodsOsteosarcernaMG-63cellsthatwerecultured/nv/trowererespectivelytreatedwith20uLcul
5、turemedium(controlgroup),dehydratedalcohol(0wmol/Lbaicaleingroup),100and200pmoVLbaicaleinsolutionfor48hours.CelIproliferationwasanalyzedbvM1_rassay.ThecelIinvasionabilitywasdetectedusingTranswelI⋯invasionassay.TheexpressionofezrinmRNAwasexaminedbyreal—timequantitativePCR.
6、Theexpressionsofezrinproteinandp-ezrinproteinweremeasuredusingWesternblotting.Apeptosisindex(AI)wasdeterminedbyterminaldeoxynucle~idyltransferase-mediateddUTPnickendIabeling(TUNEL).ResultsTheinhibitoryratesofcelIproliferationsignificantlyincreasedin100and200iJmol/Lbaicale
7、ingroupsascomparedwith0pmol/Lbaicaleingroup.Moreover,thatwashigherin200pmol/Lbaicaleingroupthanin100wmol/Lbaicaleingroup.Incomparisonwithcontroland0wmol/Lbaicaleingroups,themeancellnumbersofpermeatedmembraneandlevelsofezrinmRNA.ezrinproteinandP-ezrinproteingraduallydecrea
8、sed.butA1wasgraduallyelevatedwiththeincreaseofbaicaleinconcentrations.whereastherewasnosignifica
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