Oct4(Octamer-4,alsoknownasPOU5F1)isahomeodomaintranscriptionfactorofthePOUfamilywhichisinvolvedintheregulationofpluripotencyduringnormaldevelopment.TheexpressionofOct4isassociatedwithanundifferentiatedphenotypeinembryonicstem(ES)cells,whilegeneknockdownofOct4promotesdifferentiation.Assuch,itisfrequentlyusedasaMarkerforundifferentiatedEScellsorinducedpluripotentstem(iPS)cells.Oct4isoneofthekeytranscriptionfactorsusedtoreprogrammouseandhumanfibroblaststoapluripotentstate.TheOct4Antibody(AffinityPurified)wasscreenedonhumanandmouseEScellsusingimmunocytochemistryandflowcytometryandselectedasthebestOct4antibodyavailableforresearchersneedingtodemonstratepluripotency.
ProductSpecifications
Size
100μl
Clone
Polyclonal
Isotype
RabbitIgG
Immunogen
SyntheticpeptideconjugatedtoKLHderivedfromwithinresidues300totheC-terminusofhumanOct4
Reactivity
Mouse,Human
Preparation
Theantibodywaspurifiedbyimmunogenaffinitychromatography.
Formulation
Phosphate-bufferedsolution,pH7.4,1%BSAand0.02%sodiumazide
StorageandStABIlity
Storeat4°Cprotectedfromlight.Donotfreeze.Stablefor6monthsfromdateofreceiptwhenstoredasdirected.
QualityControl
Testedbyimmunocytochemistryandflowcytometrytoensureproductquality.
RecommendedUsage
Thesuggesteduseofthisantibodyisa1:100dilutionforimmunocytochemistryanda1:5dilutionforflowcytometry.Forapplicationspecificprotocols,pleasereferenceProtocol:ImmunocytochemistryandProtocol:FlowCytometryonlineatwww.Stemgent.com/support/protocols.
SpecificationSheets
- 09-0023SpecificationsSheet
SafetyDataSheets
Protocols
- Protocol:ImmunoflourescenceStainingofCellsforFlowCytometry
- Protocol:Immunocytochemistry
RelatedProducts
- mRNAReprogrammingKit(00-0071)
- microRNABoosterKit(00-0073)
References
- Looijenga,L.H.,Stoop,H.,deLeeuw,H.P.,deGouveiaBrazao,C.A.,Gillis,A.J.,vanRoozendaal,K.E.,vanZoelen,E.J.,Weber,R.F.,Wolffenbuttel,K.P.,vanDekken,H.,Honecker,F.,Bokemeyer,C.,Perlman,E.J.,Schneider,D.T.,Kononen,J.,Sauter,G.,Oosterhuis,J.W.(2003)POU5F1(OCT3/4)identifiescellswithpluripotentpotentialinhumangermcelltumors.CancerRes63:2244-2250.
- Zaehres,H.,Lensch,M.W.,Daheron,L.,Stewart,S.A.,Itskovitz-Eldor,J.,Daley,G.Q.(2005)High-efficiencyRNAinterferenceinhumanembryonicstemcells.StemCells23:299-305.
- Takahashi,K.,andYamanaka,S.(2006).Inductionofpluripotentstemcellsfrommouseembryonicandadultfibroblastculturesbydefinedfactors.Cell126,663-676.
- Takahashi,K.,TanabeK.,Ohnuki,M.,Narita,M.,IchisakaT.,TomodaK.andYamanaka,S.(2007)Inductionofpluripotentstemcellsfromadulthumanfibroblastsbydefinedfactors.Cell131:861-872.
- Park,I.H.,Arora,N.,Huo,H.,Maherali,N.,Ahfeldt,T.,Shimamura,A.,Lensch,M.W.,Cowan,C.,Hochedlinger,K.,andDaley,G.Q.(2008)Disease-specificinducedpluripotentstemcells.Cell134:877-886.
AdditionalPublications
- BurnettLC;LeDucCA;SulsonaCR;PaullD;EddiraS;LevyB;SallesJP;TauberM;DriscollDJ;EgliD;LeibelRL."Inducedpluripotentcells(iPSC)createdfromskinfibroblastaofpatientswithPrader-Willisyndrome(PWS)retainthemolecularsignatureofPWS."StemCellRes(2016),doi:10.1016/j.scr.2016.08.008
- SridharA;OhlemacherSK;LangerKB;MeyerJS."RobustdifferentiationofmRNA-reprogrammedhumaninducedpluripotentstemcellstoardaretinallineage."StemCellTranslationalMedicine5:10(2016)
- OhlemacherSK;SridharA;XiaoY;HochstetlerAE;SarfaraziM;CumminsTR;MeyerJS."Stepwisedifferentiationofretinalganglioncellsfromhumanpluripotentstemcellsenablesanalysisofglaucomatousneurodegeneration."StemCellsdoi:10.1002/stem.2356(2016)
- PoleganovMA;EminliS;BeissertT;HerzS;MoonJ-I;GoldmannJ;BeyerA;HeckR;BurkhartI;RoldanDB;TureciO;YiK;HamiltonB;SahinU."Efficientreprogrammingofhumanfibroblastsandblood-derivedendothelialProgenitorcellsusingnonmodifiedRNAforreprogrammingandimmuneevasion."HumanGeneTherapy26:751(2015)
- HanF;WangW;CHenB;CHenC;LISen;LuX;DuanJ;ZhangY;ZhangYA;GuoW;LiG."Humaninducedpluripotentstemcell-derivedneuronsimprovemotorasymmetryina6-hydroxydopamine-inducedratmodelofParkinson"sdisease."Cytotherapy17:665(2015)
- PaullD;SevillaA;ZhouH;HahnAK;KimH;NapolitanoC;TsankovA;ShangL;KrumholzK;JagaseesanP;WoodardCM;SunB;VilbouxT;ZimmerM;ForeroE;MoroziewiczDN;MartinezH;MalicdanMCV;WeissKA;VensandLB;DusenberryCR;PolusH;SyKTL;KahlerDJ;GahlWA;SolomonSL;ChangS;MeissnerA;EgganK;NoggleSA."Automated,high-throughputderivation,characterizationanddifferentiationofinducedpluripotentstemcells."NaureMethods12:885(2015)
- RenJ;BrionesV;BarbourS;YuW;HanY;TarashimaM;MueggeK."TheATPbindingsiteofthechromatinremodelinghomologLSHisrequiredfornucleosomedensityanddenovoDNAmethylationatrepeatsequences."NuclAcidsResdoi:10.1093/nar/gku1371(2015)
Stemgent mRNA体细胞重编程系统
产品特点
1.快速 Fast
Stemgent® MicroRNA-Enhanced mRNA Reprogramming System只需2周即可将靶细胞重编程为iPS细胞,与仙台病毒(Sendai Virus)、非整合型DNA载体(Episomal DNA Vectors)等传统iPS重编程方法相比,缩短实验周期超过50%以上(Figure. 1)。

Figure 1. Stemgent® mRNA重编程系统、仙台病毒依赖的重编程系统以及游离型DNA载体依赖的重编程系统重编程时程比较。
简便 Easy
与病毒、DNA载体依赖的iPS重编程手段不同,使用Stemgent® MicroRNA-Enhanced mRNA Reprogramming System对靶细胞进行重编程,生成的iPS细胞无需进行复杂耗时的下游筛选程序,只需简简单单6个步骤,即可轻松构建iPS细胞系。
| Description | Day |
Step 1 | Material Preparation | Prior to starting |
Step 2 | Plate Cells | 0 |
Step 3 | Transfect Cells | 1 to 12 |
Step 4 | Identify Cells | 13-14 |
Step 5 | Pick and Passage iPS Cell Colonies | 15-16 |
Step 6 | Maintain iPS Cell Cultures | 16+ |

注:因所用细胞类型及实验条件不同,上述时间轴可能略有不同,仅供参考。

Figure 2. Stemgent® MicroRNA-Enhanced mRNA Reprogramming System重编程过程时间表、显微镜下观察到的重编程过程中靶细胞形态变化。第12天,形成的iPS克隆表达多能型Marker TRA-1-81。
高效 Efficient
病毒、DNA载体等依赖的iPS重编程技术,其重编程效率介于0.00001%到1%之间不等,而Stemgent® MicroRNA-Enhanced mRNA Reprogramming System的重编程效率远远大于1%,极大地提高了iPS克隆的产出率。
表1. 不同类型iPS重编程手段效率比较
Reprogramming Method | Efficiency | Integrating | Screening |
RNA | >1% | No | No |
仙台病毒(Sendai virus) | 0.01-1% | No | Yes |
DNA载体(Episomal/Minicircle) | 0.00% | Possible | Yes |
慢病毒(Lentivirus) | 0.001-0.01% | Yes | Yes |
腺病毒(Adenovirus) | 0.0001-0.001% | Possible | Yes |
Protein | 0.00% | No | No |
安全 Safe
某些iPS研究领域,例如iPS临床研究、治疗应用等,对iPS细胞的安全性提出了极高的要求。使用Stemgent® MicroRNA-Enhanced mRNA Reprogramming System重编程靶细胞,无需担心构建的iPS细胞系可能含有病毒载体残留,亦无需担心无关的基因整合进宿主基因组,是目前适用于临床研究及治疗的最理想选择。
而以仙台病毒(Sendai Virus)为载体的iPS重编程手段,其病毒基因组虽然不会整合进宿主染色体,仙台病毒本身也不具备复制能力,但是为了构建真正意义上的virus-free的iPS细胞系,通常需要经过一个10-20代、耗时费力的筛选过程,以确保最终得到的iPS细胞系无病毒载体残留。以慢病毒(Lentivirus)体的iPS重编程手段,病毒基因组能够永久整合进宿主基因组,会给后续的iPS细胞分析带来干扰。

高性价比 Cost Effective
以仙台病毒为载体的iPS重编程试剂盒非常昂贵,综合重编程效率、时间及劳动力成本、安全性等多重考虑,Stemgent® MicroRNA-Enhanced mRNA Reprogramming System无疑是性价比的上乘之选。