ApplicationNotes | Immunohistochemistryonformalinfixed,deparaffinizedtissuesections Frozentissuesections. Smears. Cytospins. *DonotuseSeruminblockingsteps.
Alsoseehttp://ajp.amjpathol.org/cgi/content/abstract/141/6/1453forimportantreactivityinformationon19A2inparaffinfixedtissues.
Finalworkingdilutionsmustbedeterminedbyenduser.
IMMUNOHISTOCHEMICALPROCEDUREFORMAB4078
ThefollowinghistochemicalimmunoperoxidaseprotocolhasbeenoptimizedforusewithMAB4078.
METHODOLOGY:ThismethodisusedwithstandardstreptavidinorABCimmunoperoxidasemethodsusingaDABsubstraterunatroomtemperaturewithparaffinorfrozensections,smearsorcytospins.
NOTE:Optimalfixationtimeforparaffinprocessedtissuefixedin10%NeutralBufferedFormalinis12-14hours.
REQUIREDSUPPLEMENTALMATERIAL:
1.3%HydrogenPeroxide:commerciallyavailable.
2.PBS
3.EthylAlcohol:histologygradeorequivalent
4.Methanol:histologygradeorequivalent
5.Acetone:histologygradeorequivalent
6.Xylene(histologygrade)orXyleneSubstitute(Hemo-D)
7.MountingMedia:Krystalon(Harleco)orequivalent
8.Gill#1Hematoxylin:Sigma#GHS-1-32orequivalent
9.GoatAnti-MouseBiotin
10.StreptavidinHRP(optionalreagent)
11.3,3"Diaminobenzidinetetrahydrochloride(DAB):Sigma#D-5637orequivalent
12.ABC:VectorKit#PK4000orequivalent
REAGENTPREPARATION:
1.Primaryantibody:PrepareastocksolutionofantibodyinPBS
2.GoatAnti-MouseBiotin:Approximatedilutionof1:100inPBS(10mg/test)
3.Streptavidin:5mLstocksolutionand995mLPBS(1/200dilution).Letsit15minutesbeforeuse(yieldasavolumesufficientfor~20slides)ORifusingABCkitfromVectorfollowasinstructed.
4.DAB:Reconstitute1.5mgofpowderwith100mLofPBS.Activate15minutespriortousebyadding100mL3%H2O2(yieldsavolumesufficientfor~20slides).WARNING:DABisapossIBLecarcinogen.Avoidcontactwithskin.
5.PBS:Usingagraduatedcylinder,reconstitutewith500mLofdistilledwater.
6.AlcoholBaths:Alldilutionsarealcoholsmadewithdistilledwater.
PROCEDURE:
PARAFFINSECTIONS
(cutat4-5microns,10%NeutralBufferedFormalinfixed):
1.Placeslidesin62°Covenfor15minutes.
2.PlaceslidesinHemo-D,orxylene,for15minutes.
3.De-paraffinizeslidesthroughbathsof:A)xylene/100%ethanol1:1(orHemo-D/100%ethanol1:1),B)100%ethylalcoholx2,C)95%ethylalcohol,D)90%ethylalcohol,E)80%ethylalcohol,F)70%ethylalcoholx2(2minuteseachbath).
4.Placeslidesinrunningcooltapwaterfor5minutes.
5.Shakeoffexcesswater.Placeslidesonincubationracksheldatroomtemperature.CirclesectionswithPAPpen(Newcomer,Inc.)ordiamondpentoisolatesection.
6.Floodsectionswithprimaryantibodyandincubatefor35-40minutes.
7.WipeoffexcessPBS.FloodsectionswithGoatAnti-MouseBiotinreagentandincubatefor35-40minutes.
8.WashwithPBS3-5min
9.WashagainwithPBS3-5min.
10.WipeoffexcessPBS.Floodsectionswithstreptavidin-HRPandincubatefor10minutesORfloodsectionswithABCandincubatefor35-40minutes.
11.WashwithPBS3-5min.
12.WipeoffexcessPBS.FloodsectionswithDABandincubatefor6-8minutes.
13.Placeslidesincoolrunningtapwaterfor5minutes.
14.PlaceslidesinGills#1hematoxylinfor90seconds.
15.Placeslidesincoolrunningtapwaterfor5minutes.
16.DehydrateslidesthroughbathsofA)70%ethylalcohol,B)80%ethylalcohol,C)90%ethylalcohol,D)95%ethylalcoholx2,E)100%ethylalcoholx2,F)xylene/100%ethanol1:1(orHemo-D/100%ethanol1:1)x2,G)xyleneorHemo-Dx2(2minuteseachbath.
17.Mountslidesusingmountingmedia.
FROZENSECTIONS(cutat8microns):Pullsectionsfromfreezer(orcutfresh),airdryatroomtemperature(orunderafanfor15minutes),fixedin4oCacetonefor4minutes,airdryfor30minutesatroomtemperature(orunderafanfor15minutes),thenfollowaboveprocedurebeginningat#5.
SMEARS:Methanolfixfor30minutesat4oC,thenfollowaboveprocedurebeginningat#5.
CYTOSPINS:CelllinesandothercellpopulationspreparedbyresUSPending,ineachwell,~40,000cellsusing500mL1%NormalGoatSerumperwell.Centrifugefor6minutesat1200RPM.Airdryfor30minutesatroomtemperature(orunderafanfor15minutes).Iftumorcellsarebeingscreened,fixinRTacetonefor2-3minutes.Ifperipheralbloodprepsarebeingscreened,fixin100%methanolfor20minutes.Airdrytheslidesfor30minutesatroomtemperature(or15minutesunderafan)andbeginat#5above.
NOTE:WhenstainingusingthePCNAantibodiesastheprimaryDONOTuseNormalGoatSerumoranyotherserumblockingstep. |