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Adenosine3",5"-cyclicmonophosphate(cyclicAMP;cAMP)modulatesvariousphysiologicalfunctionssuchascardiovascularBIOLOGy,learningandmemory,olfaction,immuneresponse,asthmaandkidneyfunction(1,2).cAMPisproducedfromATPbyadenylylcyclasesandisdegradedbyphosphodiesterases.StimulationofadenylylcyclasesorinhibitionofphosphodiesterasescanincreasecellularcAMPconcentrations.Blockersofadenylylcyclase-activatingreceptorsandinhibitorsofthecAMP-specificphosphodiesterasesareusedfortreatinghumandiseases.Forexample,blockingagentsforcAMP-increasingbeta-adrenergicreceptors(beta-blockers)areusedfortreatingabnormalheartrhythms,highbloodpressure(hypertension),myocardialinfarctionandheartfailure.InhibitorsofcAMPspecificphosphodiesterasetypes2and4arebeingtestedforcognitionenhancement. ToscreenforinhibitorsorstimulatorsofcellularcAMPlevels,itisessentialtohaveasensitive,selectiveandreproducIBLemethodtomeasurethecAMPconcentrations.Thisisespeciallytruefortheinitialscreeningsgiventhepossibleweakereffectsoflargerpoolsofcompounds. CurrentlyavailableotherELISAkitsmeasuringcAMPlevelsarebasedonthenon-affinity-purifiedpolyclonalanti-cAMPantibody.Despitetheclaimedselectivity,thesepolyclonalanti-cAMPantibodiesdisplaycertaincross-reactivitywithATP.GiventhatATPisthesubstrateforthecAMPproduction,itisverydesirabletohaveanantibodywithhighspecificitytowardscAMPoverATP. NewEastBiosciencescAMPELISAkitisbasedontheuniquemousemonoclonalanti-cAMPantibody.Thismonoclonalanti-cAMPantibodydisplays>108foldofselectivityoverATP,cGMP,andothernucleosideanalogues.NewEastBiosciencescAMPELISAkitprovidessignificantlyimprovedsensitivityandselectivityoverotherkitsbasedonpolyclonalanti-cAMPantibodies.Ourmonoclonalanti-cAMPantibody-basedELISAkitalsoavoidsthebatch-to-batchvariationsassociatedwithpolyclonalantibodyproductionsfromanimals,thusprovidingthereproducibilityinthelongrun. FurThermore,whilepolyclonalanti-cAMPantibodiesusedinotherELISAkitshavehigheraffinityforacetylatedcAMPthannon-acetylatedcAMP,NewEastBiosciencesmonoclonalanti-cAMPantibodyhassimilaraffinitiestonon-acetylatedandacetylatedcAMPmolecules.Therefore,acetylationtreatmentsofsamplesandstandardsarenotneededinNewEastBiosciencescAMPELISAkit.Thissignificantlyreducesthetimefortheassay.Theavoidanceoforganicreagentsusedintheacetylationprocessprovidesasafeandhealthyworkenvironment. PrincipleOutlineNewEastBiosciencescAMPELISAKitisacompetitiveimmunoassaytomeasurethecAMPlevels,eitherfromcellextractsorfrominvitroadenylylcyclaseassays.Briefly,multi-wellplatesarecoatedwithgoat-anti-mouseserum.cAMPincellextractsorininvitroadenylylcyclaseassayswillcompetitivelybindtothemonoclonalanti-cAMPantibodyinthepresenceoffixedamountsofcAMP-conjugatedhorse-rADIshperoxidaseoralkalinephosphatase.KnownamountsofcAMPareusedasstandardstogeneratethecalculationcurve.Afterashortincubation,theexcessreagentsarewashedawayandsubstrateisadded.Themultiwellplatesarethenreadonamicroplatereaderat450nmor405nm.TheintensityoftheyellowcolorisinverselyproportionaltotheconcentrationofcAMPinsamples.ThemeasuredopticaldensityisusedtocalculatetheconcentrationofcAMPinsamplesbasedonthecurvefromthecAMPstandards. FAQs ProductManual AssayLayoutSheet
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