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Antibodies-Online/Ular UV-Induced DNA Damage ELISA Kit/ABIN2344977/96 tests

Antigen
UlarUV-InducedDNADamage
Reactivity
Others
Alternatives
Kitswithalternativereactivityto:
1Others
MethodType
CellELISA
Application
ELISA
Options
Bulkdiscount
Supplier
SupplierProductNo.
PurposeCellsarefirstseededina96-welltissuecultureplate.WellsarethenUVirrADIatedtoinduceDNAdamage.Afterfixationanddenaturation,cellscontainingCPDdamageareprobedwithananti-CPDantibody,followedbyanHRPconjugatedsecondaryantibody.Theunboundsecondaryantibodyisremovedduringawashstep,andsubstratesolutionreactivewithHRPisaddedtothewells.Thereactionisterminatedbyadditionofacidandabsorbanceismeasuredat450nm.2
BrandOxiSelect™
SampleTypeCellSamples
AnalyticalMethodQuantitative
DetectionMethodColorimetric
CharacteristicsOxiSelect™CellularUV-inducedDNADamageELISAKit(CPD)isanenzymeimmunoassaydevelopedforrapiddetectionofCPDsingenomicDNAofculturedcells.Eachkitprovidessufficientreagentstoperformupto96assays.Figure1:StructuresofDNAlesionsinducedbyUVLight
Components
  1. Anti-CPDAntibody,100X:One100μLvial.
  2. SecondaryAntibody,HRPConjugate:One50μLvial.
  3. DenaturationSolutionA,100X:One200μLvial.
  4. DenaturationSolutionB,100X:One200μLvial.
  5. AssayDiluent:One50mLbottle.
  6. 10XWashBuffer:One50mLbottle.
  7. SubstrateSolution:One12mLamberbottle.
  8. StopSolution(Part.No.310808):One12mLbottle.
Materialnotincluded
  1. 96-welltissuecultureplate
  2. Celllineofinterest
  3. UVcrosslinker,irradiator,orgermicidallamp
  4. DPBScontainingmagnesiumandcalcium
  5. 75%Methanol/25%AceticAcid
  6. 70%Ethanol
  7. 10μLto1000μLadjustablesinglechannelmicroPipetteswithdisposabletips
  8. 50μLto300μLadjustablemultichannelmicropipettewithdisposabletips
  9. Microplatereadercapableofreadingat450nm(620nmasoptionalreferencewavelength)
BackgroundAbsorptionofultraviolet(UV)lightproducestwopredominanttypesofDNAdamage,cyclobutanepyrimidinedimers(CPD)andpyrimidine(6-4)pyrimidonephotoproducts(6-4PP)(Figure1).TheresultisatransitionofCtoTandCCtoTT,whicharethemostfrequentmutationsofp53inbothhumanandmouseskincancers.UVdamagedDNAisusuallyrepairedbynucleotideexcisionrepair(NER)orbaseexcisionrepair(BER).AfterUVexposure,cellsactivatep53andstallthecellcycleforrepair.Ifthedamageistoosevere,thecellwilltriggerapoptosistogetridofDNAdamaged,potentiallymutantcells.
Comment

  • MeasureCPDstructuresofDNAlesionsinducedbyUVlight
  • Intactcellsareculturedina96-wellplateandCPDmeasuredbyELISA

PlateWithoutplate
ReagentPreparation
  • 1XWashBuffer:Dilutethe10XWashBufferConcentrateto1Xwithdeionizedwater.Stirtohomogeneity.
  • Anti-CPDAntibodyandSecondaryAntibody,HRPConjugate:ImmediatelybeforeusedilutetheAnti-CPDAntibody1:100andSecondaryAntibody1:1000withAssayDiluent.Donotstoredilutedsolutions.
  • DenaturationSolutionA:ImmediatelybeforeusedilutetheDenaturationSolutionA1:100with70 %Ethanol.Donotstoredilutedsolution.
  • DenaturationSolutionB:ImmediatelybeforeusedilutetheDenaturationSolutionB1:100withDPBS(containingmagnesiumandcalcium).Donotstoredilutedsolution.
AssayProcedure

I.CellSeeding

  1. HarvestandresUSPendcellsinculturemediumat2-4x105cells/mL.Seed100μLineachwellofa96-welltissuecultureplateandincubateovernightat37 °C,5 %CO2(cellsshouldbe>80 %confluent).

II.UVTreatment,FixationandDenaturation

  1. Carefullyremovemediumfromthewellsbytiltingtheplateandaspiratingfromtheedge.Gentlyadd100μLofDPBS(containingmagnesiumandcalcium)toeachwell,takingcarenottodislodgethecells.
  2. PerformUVirradiationtodesiredwells(removalofplatecoverisrecommended).Includewellswithoutirradiationasanegativecontrol.Samplesshouldbeperformedintriplicate.
  3. Aspiratethewellsandadd100μLof75 %Methanol/25 %AceticAcidtoeachwell.Incubate30 minutesatroomtemperature.
  4. Aspiratethewellsandadd100μLof70 %Ethanoltoeachwell.Incubate30 minutesatroomtemperature.
  5. Aspiratethewellsandadd100μLofDenaturationSolutionA(seePreparationofReagents)toeachwell.Incubate5 minutesatroomtemperature.
  6. Gentlywash3timeswith200μLDPBS(containingmagnesiumandcalcium).
  7. Aspiratethewellsandadd100μLofDenaturationSolutionB(seePreparationofReagents)toeachwell.Incubate10 minutesatroomtemperature.
  8. Aspiratethewellsandadd200μLofAssayDiluenttoeachwell.Blockthewells30 minutesatroomtemperature.4

III.CPDDetection

  1. Aspiratethewellsandadd100μLofthedilutedanti-CPDantibody(seePreparationofReagents)toeachwell.Incubateatroomtemperaturefor1houronanorbitalshaker.
  2. Washmicrowellstrips4timeswith250μL1XWashBufferperwellwiththoroughaspirationbetweeneachwash.Afterthelastwash,emptywellsandtapmicrowellstripsonabsorbentpadorpapertoweltoremoveexcess1XWashBuffer.
  3. Add100μLofthedilutedSecondaryAntibody,HRPConjugate(seePreparationofReagents)toeachwell.Incubateatroomtemperaturefor1houronanorbitalshaker.
  4. Washmicrowellstrips4timesaccordingtostep2above.Proceedimmediatelytothenextstep.
  5. WarmSubstrateSolutiontoroomtemperature.Add100μLofSubstrateSolutiontoeachwell,includingtheblankwells.Incubateatroomtemperatureonanorbitalshaker.Actualincubationtimemayvaryfrom5-20 minutes.
  6. Stoptheenzymereactionbyadding100μLofStopSolutionintoeachwell,includingtheblankwells.Resultsshouldbereadimmediately(colorwillfadeovertime).
  7. Readabsorbanceofeachmicrowellonastandardmicroplatereaderusing450nmastheprimarywavelength.5

RestrictionsForResearchUseonly
Storage4°C
StorageCommentStoreallkitcomponentsat4°C.
SupplierImages
Immunofluorescence (IF) image for Ular UV-Induced DNA Damage ELISA Kit (ABIN2344977)DNADamageInducedbyUVLightinHelaCells.HeLacellswereseededat20K/wellover...
 image for Ular UV-Induced DNA Damage ELISA Kit (ABIN2344977)DNADamageInducedbyUVLightinHeLaCells.HeLacellswereseededat20K/wellover...
Productcitedin:Dai,Zhou,Wei,Wang,Guo,Yi,Li,Gao,Liu,Li:"Afunctionalsingle-nucleotidepolymorphismintheERCC1genealterstheefficacyofnarrowbandultravioletBtherapyinpatientswithactivevitiligoinaChinesepopulation."in:TheBritishjournalofdermatology,Vol.173,Issue2,pp.457-63,2015(PubMed).

Harberts,Zhou,Fishelevich,Liu,Gaspari:"UltravioletradiationsignalingthroughTLR4/MyD88constrainsDNArepairandplaysaroleincutaneousimmunosuppression."in:Journalofimmunology(Baltimore,Md.:1950),Vol.194,Issue7,pp.3127-35,2015(PubMed).

Shin,Kum,Ryu,Kim,Jung,Park:"ProtectiveeffectsofanewphloretinderivativeagainstUVB-induceddamageinskincellmodelandhumanvolunteers."in:Internationaljournalofmolecularsciences,Vol.15,Issue10,pp.18919-40,2014(PubMed).

Emanuele,Bertona,Sanchis-Gomar,Pareja-Galeano,Lucia:"Protectiveeffectoftrehalose-loadedliposomesagainstUVB-inducedphotodamageinhumankeratinocytes."in:Biomedicalreports,Vol.2,Issue5,pp.755-759,2014(PubMed).

Thongrakard,Ruangrungsi,Ekkapongpisit,Isidoro,Tencomnao:"ProtectionfromUVBToxicityinHumanKeratinocytesbyThailandNativeHerbsExtracts."in:PhotochemistryandphotoBIOLOGy,2013(PubMed).

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