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1、脂质体介导转染N2a细胞的优化方法赵云鹤1,王若楠2,杨桂姣1,陆 利11山西医科大学人体解剖学教研室,山西省太原市 030001;2山西医科大学七年制临床医学系,山西省太原市 030001OptimizationofN2acelltransfectionmediatedbyliposomeZhaoYun-he1,WangRuo-nan2,YangGui-jiao1,LuLi11DepartmentofAnatomy,ShanxiMedicalUniversity,Taiyuan030001,S
2、hanxiProvince,China;2Seven-yearProgramofClinicalMedicine,ShanxiMedicalUniversity,Taiyuan030001,ShanxiProvince,China摘要 背景:阳离子脂质体介导的细胞转染具有结果可靠、可重复性强的特点,但面临一个共同的缺点,就是转染效率常较低。目的:探讨阳离子脂质体转染N2a细胞(小鼠神经胶质瘤细胞)的优化方法。方法:采用24孔培养板,1.5μL阳离子脂质体Lipofectamine™LTX介导,通
3、过贴壁法和悬浮法,将500ng带有绿色荧光蛋白(GFP)基因的重组质粒pcDNA3-GFP转入N2a细胞,倒置荧光显微镜观察细胞内绿色荧光蛋白表达情况,并比较二者转染效率。采用悬浮转染法,将500ng质粒DNA分别用1.0,1.5,2.0,2.5μLLipofectamine™LTX进行转染,探讨最适脂质体和DNA比例。结果与结论:1.5μL脂质体/500ngDNA,悬浮法转染效率显著高于贴壁法转染效率(P<0.01);1.0,1.5,2.0,2.5μLLipofectamine™LTX对500
4、ng质粒DNA的转染效率分别为(76.60±3.85)%,(80.00±4.17)%,(88.00±5.89)%,(54.96±4.23)%,提示脂质体2.0μL与质粒DNA500ng的转染效率最高。中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程全文链接:窗体顶端关键词:组织构建;组织工程;脂质体;贴壁转染;悬浮转染;N2a细胞;绿色荧光蛋白; locatedintheTomb,DongShenJiabang,deferth
5、enextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcameAbstract:BACKGROUND:Cationicliposome-mediatedcelltransfectionisreliableandrepeatable.Howev
6、erthetransfectionefficiencyisoftenlow.OBJECTIVE:TostudytheoptimizedmethodsforgenetransfectionmediatedbyliposomeintoN2acells(mouseneuroblastmacells).METHODS:Usingtraditionaladherentmethodandimprovedsuspensionmethod,500ngrecombinantplasmidpcDNA3-GFPcar
7、ryinggreenfluorescenceproteinwastransfectedintoN2acellsin24-wellcultureplate,whichwasmediatedby1.5μLLipofectamine™LTXReagent.Theexpressionofgreenfluorescentproteinwasobservedbyinvertedfluorescencemicroscope,andthetransfectionefficienciesatdifferenttr
8、ansfectionwayswerecalculated.Byusingimprovedsuspensiontransfectionmethod,500ngplasmidDNAwastransfectedwithdifferentdosesofLipofectamine™LTXReagent(1.0,1.5,2.0,2.5μL).TheoptimalratioofliposomeandDNAwasexplored.RESULTSANDCONCLUSION:Thetransfectioneffic