OptimizePCRamplificationoflongDNAampliconsupto40kb
Fast,simpleoptimizationstartingwiththecompletekit- EasilyamplifyDNAtargetsupto40kblong
- ReducePCR-inducederrorsintheselongampliconswiththishighfidelityDNApolymerasemix
TheMasterAmp™Extra-LongPCRKitisacompletesystemforsuccessfulandaccurateone-stepamplificationofDNAsequencesupto~40kb.ThekitcontainstheMasterAmp™Extra-LongDNAPolymeraseMix,aswellasnineMasterAmpExtra-LongPCR2XPreMixeswithdNTPs,buffer,andvaryingamountsofMgCl2andtheMasterAmpPCREnhancerwithBetaine.*
Werecommendfirstusingthecompletekit(Cat.No.MHF9220)totestthedifferentMasterMixExtra-Long2XPreMixes(Step1,Fig.1)witheachnewtemplateandprimersettoidentifythebestperformingone.OnePreMixwillamplifyyourlongtemplateandgiveconsistentresultsinallsubsequentamplifications(Step2,Fig.1).OncetheoptimalPreMixisidentifiedcontinuetousethatcombinationofMasterAmpExtra-Long2XPreMixandDNAPolymeraseforallsubsequentamplificationsusingthattemplateDNAandprimerset.
| Figure1.TwostepstoreliableandconsistentPCRresults. | |
| STEP1.FindtheoptimalMasterAmp™Extra-LongPCRPreMix.PerformPCRwithyourtemplate,primers,andtheninePreMixes. | STEP2.UsethesameMasterAmp™Extra-LongPCRPreMixtoobtainreliable,consistentPCRofthesamesequence. |
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| A.Amplificationofa20-kbregionoflamBDaDNAusingMasterAmp™Extra-LongPCR2XPreMixes(1-9).MasterAmp™Extra-LongPCRPreMix4producedoptimalresults. | B.SubsequentPCRofa20-kblambdaDNAregionwiththesameprimerpairandMasterAmp™PreMix4gaveconsistentresults,usingtheoptimalPreMixdeterminedinStep1. |
![]() | Figure2.Extra-longamplificationoflambdaDNAusingtheMasterAmp™Extra-LongPCRKit.PCRconditionswereoptimizedandMasterAmpPremix4wasselectedforPCRof1ngoflambdaDNAineachsample.Resultswereanalyzedona0.5%agarosegel.Ampliconsizeswere30kb(lane1),35kb(lane2)and40kb(lane3).LaneM,5-KbDNAladder. |
*Coveredbyissuedand/orpendingpatents.
MasterAmp™Extra-LongPCRKit;Purchaseofthisproductincludesanimmunityfromsuitunderpatentsspecifiedintheproductinserttouseonlytheamountpurchasedforthepurchaser"sowninternalresearch.Nootherpatentrights(suchas5´NucleaseProcesspatentrights)areconveyedexpressly,byimplication,orbyestoppel.FurtherinformationonpurchasinglicensesmaybeobtainedbycontactingtheDirectorofLicensing,AppliedBiosystems,850LincolnCentreDrive,FosterCity,California94404,USA.
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半定量反转录-聚合酶链反应(semi-quantitative reverse transcription and polymerase Chain reaction ,SqRT-PCR)是近年来常用的一种简捷、特异的定量RNA测定方法,通过mRNA反转录成cDNA,再进行PCR扩增,并测定PCR产物的数量,可以推测样品中特异mRNA的相对数量。
定量RT-PCR(quantitative reverse transcription and polymerase Chain reaction ,qRT-PCR)是在用一步法或两步法,在PCR反应体系中加入荧光基团,利用荧光信号积累实时监测整个PCR进程,最后通过标准曲线对未知模板进行定量分析的方法。
半定量RT-PCR需要跑电泳,根据条带亮度的强弱来判断模板拷贝数的高低或者是表达量的高低,而定量RT-PCR则无需电泳可以实时监测整个PCR的全程并且由给出的Ct值及Standard Curve来判断gene拷贝数的高低。
在另外的一组管子中,加入已知拷贝数的DNA同时扩增,每个管子中加入的数量是不同的,但是从最小数目到最大数目的这个范围涵盖了样本中DNA拷贝数。
PCR反应完成后,把已知拷贝数DNA的量和PCR荧光Ct值制成标准曲线,再把待测样本的CT值和该标准曲线比对,就可以得到样本中的起始拷贝数了
有大神做过人外周血全血miRNA的提取及后续PCR实验的吗?目前课题实验遇到瓶颈,求助大神!!!是否miRNA的PCR验证在全血做不出?必须要用血浆或者血清?目前血浆、血清也有部分样本。。。。有大神指条明路吗?




