Description:
NFkBResponsiveLuciferaseReporterMCF-7StableCellLineisderivedfromhumanbreastcancer,andstablyexpressfireflyluciferasereportergeneunderthecontroloftheNFkB responseelement. Thiscelllineisanidealcellularmodelformonitoringtheactivation ofNFkBReceptorSignalingPathwaytriggeredbystimulitreatment,enforcedgeneexpressionandgeneknockdown.Principle:
NFkBplaysanimportantroleincontrollingmanyBIOLOGicalprocessesincludingimmuneandinflammatoryresponses,developmentalprocesses,cellulargrowth,andapoptosis.Inresponsetothevariousstimuli,suchasstress,cytokines,freerADIcals,ultravioletirradiation,andbacterialorviralantigens,NFkBisactivatedandtranslocatesfromcytoplasmtonucleus,whereNFkBbindstoitsresponseelementonthepromoterregionandregulatesawidespectrumofgeneexpression.DysfunctionofNFkBactivityisassociatedwithcancer,inflammatoryandautoimmunedisease,andviralinfection.MonitoringtheNFkBactivityisessentialtounveilthemechanismofthesediseasesandconductdrugdiscovery.
SignosishasestablishedaNFkBluciferasereporterstablecelllinethathasbeenstablytransfectedwithpTA-NFkB-luciferasereportervectorandcanbeusedforstudyingNFkBsignalingpathwaysactivatedbydifferentcytokines,suchasTNFαandmanyotherstimuli,enforcedgeneexpressionandgeneknockdown.ThecelllinewasestablishedbytransfectionusingapTA-NFkB-luciferasereportervector,whichcontains4repeatsofNFkBbindingsites,aminimalpromoterupstreamofthefireflyluciferasecodingregion,alongwithhygromycinexpressionvectorfollowedbyhygromycinselection.ThehygromycinresistantclonesweresubsequentlyscreenedforTNFa-inducedluciferaseactivity.
PrinciplebehindTFluciferasereporter. TFluciferasereporterstablecelllineutilizesartificialpromoterconstructstodriveluciferaseexpression. Thepromoterregioncanconsistsofmultiplerepeatsofacis-elementTFbindingsite,aDNAfragmentfromthepromoterregionofaknownTFdownstreamgene,oraDNAfragmentcontainingputative/knownTFbindingsites. ThereareseveralwaysthataTFcanbeactivated,suchasthroughextracellularstimuliorthroughintracellularsignalingpathways. Onceactivated,theTFtranslocatestothenucleusandofteninteractswithrelevantco-factorstodrivegeneexpression. Onceluciferaseisexpressed,itcangeneratelightinanenzymaticassayandtheamountoflightmeasuredispositivelycorrelatedwiththelevelofTFactivation. |
Data:
AnalysisofSL-0013NFκBreporteractivityinresponsetoTNFαtreatment. TheMCF-7cellswereseededona96-wellplateforovernightincompletegrowthmedia. Thecellsthenweretreatedwithorwithout20ng/mlTNFαingrowthmediawith0.1%FBSfor16hours. MCF-7-NFkBLuciferaseReporterCellLineexhibitsTNFα-dependentincreaseinluciferaseactivitywhencomparedtountreatedcells.
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至于到底好不好转就跟你的细胞有关了，和细胞是否是稳转株关系不大。
推荐了解“主细胞库”“工作细胞库”这两个名词。
推荐了解“主细胞库”“工作细胞库”这两个名词。
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。
然后你得确定，这个细胞株对于你得研究来说不可或缺，具有明确的代表性。
上面两个都没有问题的话，祝你顺利。
