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时间:2020-04-16
《模式小鼠总DNA三种提取方法比较-论文.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、2014年7月中国比较医学杂志July,2014第24卷第7期CHINESEJOURNALOFC0MPARATIVEMEDICINEVo1.24No.7模式小鼠总DNA三种提取方法比较刘廷苏,左琴,周舒雅,王辰飞,贺争鸣,李保文,范昌发(中国食品药品检定研究院,国家啮齿类实验动物种子中心,北京100050)【摘要】目的建立简便、快捷、经济的模式小鼠总DNA提取方法,以快速鉴定大批量模式小鼠基因型。方法采用苯酚抽提法、异丙醇沉淀法、鼠耳煮沸法提取同种模式小鼠总DNA,对比DNA纯度、得率、耗费时间,并比较基因型鉴定结果。结果苯酚抽提法得率最高,异丙醇沉淀法最低;而纯度则按照苯酚抽提
2、法、异丙醇沉淀法、鼠耳煮沸法顺序递减;在耗时上鼠耳煮沸法最短。三种方法提取的DNA均可做模版用于基因型鉴定。结论鼠耳煮沸法操作简单、成本最低,快速、基因型鉴定结果可靠,可用于规模化的基因型鉴定实验中。【关键词】总DNA提取方法;基因型鉴定;PCR反应;模式小鼠【中图分类号】R332【文献标识码】A【文章编号】1671.7856(2014)07—0045—06doi:10.3969.j.issn.1671.7856.2014.007.009ComparisonofthreemethodsfortotalDNAextractionfrommousemodelsLIUSu—SU,ZUO
3、Qin,ZHOUShu·ya,WANGChen·fei,HEZheng—ming,LIBao—wen,FANChang—fa(LaboratoryAnimalResourceCenter,NationalInstituteofFoodandDrugControl,Beijing100050,China)【Abstract】0bjectiveToestablishasimple,fastandeconomictotalDNAextractionmethodtoservetherapididentificationofmodelmousegenotypeinlargenumberof
4、mice.MethodsThreemethods,i.e.phenolextraction,isopropylalcoholprecipitationandmouseearboilingmethodswereusedtoextractthetotalDNAfromtenC57一rasmodelmice.ThepurityandyieldofDNAobtainedbythethreemethodswerecompared,andpolymerasechainreaction(PCR)assaywasusedtocomparetheefficacyofthethreeextracti
5、onmethods.ResultsAmongthethreemethods,phenolextractionwasthebestandisopropylalcoholprecipitationwasthepoorestinDNAyield.IntermsofDNApurity,thephenolextractionwasthebestandthemouseearboilingmethodwasthepoorest.AllthethreemethodscouldbeusedtoextractthetotalDNAfrommiceservingastemplateofPCRreact
6、ionforthemousegenotypeidentification.Thetimeconsumptionofthreemethodsare12.5hr,13hrand0.18hr.Mouseearboilingmethodwassignificantlylowerthanthatoftheothertwomethods(P<0.01),.TheobtainedtotalDNAcanbestoredatconventional一20~Cfor7daysand30dayslaterstillcanbeusedasatemplateforPCRreaction.Conclusio
7、nsAmongthethreemethodsstudied,themouseearboilingmethodissimpleandwiththelowestcost,80itisfeasiblefortotalDNAextractioninscaledgenotypingexperiments.【Keywords】TotalDNAextraction;Genotypeidentification;PCRreaction;Modelmice随着基因工程技术的不断发展和完善,基因工域
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