Description:
HIFResponsiveLuciferaseReporterNIH/3T3StableCellLineisderivedfrommousefibroblast,andstablyexpressfireflyluciferasereportergeneunderthecontroloftheHIFresponseelement. ThiscelllineisanidealcellularmodelformonitoringtheactivationofHypoxiaReceptorSignalingPathwaytriggeredbystimulitreatment,enforcedgeneexpressionandgeneknockdown.Principle:
Hypoxia-InducIBLeFactor(HIF)-1isadimericproteincomplexthatplaysacentralroleintheresponsetolowoxygenconcentrations,orhypoxia,and isacrucialphysiologicalregulatorofhomeostasis,vascularization,andanaerobicmetabolism.HIFisatranscriptionfactorregulatinggeneexpressionbybindingtotheirDNArecognitionsiteonthetargetgenes.FurThermore,HIF-1hasbeenwidelystudiedbecauseofitsperceivedtherapeuticpotential. HIF-1allowssurvivalandproliferationofcancerouscellsduetoitsangiogenicproperties,andtheinhibitionpotentiallycouldpreventthespreadofcancer.WithagrowingunderstandingoftheHIF-1pathway,ithasbecomeanattractivegoaltoanalyzetheinhibitionandstimulationofHIFtranscriptionalactivityviasmallmolecules.
Thecelllinewasestablishedbytransfection usinga pTA-HIF-luciferasereportervector,whichcontains4repeatsofHIFbindingsites,aminimalpromoterupstreamofthefireflyluciferasecodingregion, alongwithhygromycinexpressionvectorfollowedbyhygromycinselection. ThehygromycinresistantclonesweresubsequentlyscreenedforCoCl2-inducedluciferaseactivity.

PrinciplebehindTFluciferasereporter. TFluciferasereporterstablecelllineutilizesartificialpromoterconstructstodriveluciferaseexpression. Thepromoterregioncanconsistsofmultiplerepeatsofacis-elementTFbindingsite,aDNAfragmentfromthepromoterregionofaknownTFdownstreamgene,oraDNAfragmentcontainingputative/knownTFbindingsites. ThereareseveralwaysthataTFcanbeactivated,suchasthroughextracellularstimuliorthroughintracellularsignalingpathways. Onceactivated,theTFtranslocatestothenucleusandofteninteractswithrelevantco-factorstodrivegeneexpression. Onceluciferaseisexpressed,itcangeneratelightinanenzymaticassayandtheamountoflightmeasuredispositivelycorrelatedwiththelevelofTFactivation. |
Data:

HIFNIH3T3StableCellLineAnalysis. HIFNIH3T3stablecellswereseededina96-wellcultureplatewiththeindicatedmedium. Thecellsweretreatedwith100uMCoCl2for8hours.
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推荐了解“主细胞库”“工作细胞库”这两个名词。
1.将外源基因插入慢病毒载体
2.将构建完成的载体与慢病毒包装质粒混合,共转染靶细胞
3.收集病毒液
4.用病毒液感染靶细胞
5.用载体上带的抗生素进行筛选,如果没有,可以用无限稀释法
6.获得稳转株
如果经费充足的话可以找公司包装病毒,如武汉的普健可以提供各种载体的构建及细胞株构建的技术服务。

