
Description
Cultrex®BasementMembraneExtract(BME)isasolubleformofbasementmembranepurifiedfromEngelbreth-Holm-Swarm(EHS)tumor.Thisextractprovidesanaturalextracellularmatrixhydrogelthatpolymerizesat37°Ctoformareconstitutedbasementmembrane.Basementmembranesarecontinuoussheetsofspecializedextracellularmatrixthatformaninterfacebetweenendothelial,epithelial,muscle,orneuronalcellsandtheiradjacentstromaandthatplayanessentialroleintissueorganizationbyinfluencingcelladhesion,migration,proliferation,anddifferentiation.ThemajorcomponentsofBMEincludelaminin,collagenIV,entactin,andheparansulfateproteoglycans.
Cultrex®BMEType3isphysiologicallyalignedwiththeinvivoenvironmentandisrecommendedforxenografts,tumorgrafts,andotherinvivoapplications.
Qualitycontrolspecifications:
- Mousecoloniesareroutinelyscreenedforpathogensusing mouseantibodyproduction(MAP)testing.
- Engelbreth-Holm-Swarm(EHS)tumorisLDEV-free.
- PathClear®–testednegativebyPCRfor 17bacterialandvirusstrainstypicallyincludedinmouseantibodyproduction(MAP)testing,plus13additionalmurineinfectiousagentsincludingLDEV,foratotalof31organismsandviruses.
- Nobacterialorfungalgrowthdetectedafterincubationat37°Cfor14daysfollowingUSPsterilitytestingguidelines.
- Endotoxinconcentration≤8EU/mlbyLimulusAmoebocyteLysate(LAL)assay.
- Proteinconcentrationof12–18mg/ml.
- NomycoplasmacontaminationdetectedbyPCR.
- ProvidedinRoswellParkMemorialInstituted(RPMI) mediumwith10µg/mlgentamycin.
- GelstABIlitytestedforaperiodof14daysat37°C.
- BIOLOGicalactivitydeterminedforeachlot:
- TumorGrowthAssay–BMEType3supportsproliferationandgrowthofbreastcancercells(MCF7)embeddedinthematrixforminimumof8days.
Catalog#3632-010-02includes: | ||
CatalogNumber | Description | Qty |
3632-005-02 | Cultrex®BasementMembraneExtract,Type3,PathClear® | 2 |
GeneticIdentificationofSEMA3FasanAntilymphangiogenicMetastasisSuppressorGeneinHeadandNeckSquamousCarcinoma
ColleenL.Doçi,ConstantinosM.Mikelis,MichailS.Lionakis,AlfredoA.Molinolo,andJ.SilvioGutkind
CancerRes.,Jul2015;75:2937–2948.
http://cancerres.aacrjournals.org/cgi/content/abstract/75/14/2937
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算上其他生物24种
大概是记不太清了
本人目前需从电鳗放电器官中提取乙酰胆碱受体蛋白,提纯需要的步骤和电鳗器官都可以提供,有没有提供外包提纯服务的公司或者实验室。
NaturalProteinStopsDeadlyHumanBrainCancerInMice
ScientistsfromJohnsHopkinsandfromtheUniversityofMilanhaveeffectivelyproventhattheycaninhibitlethalhumanbraincancersinmiceusingaproteinthatselectivelyinducespositivechangesintheactivityofcellsthatbehavelikecancerstemcells.ThereportispublishedinNature.
Themostcommontypeofbraincancer-glioblastoma-ismarkedbythepresenceofthesestem-cell-likebraincells,which,insteadoftriggeringthereplacementofdamagedcells,formcancertissue.Stemcells,unlikeallothercellsinthebody,arecapableofformingalmostanykindofcellwhentheright"signals"triggertheirdevelopment.
Fortheirtreatmentexperiment,theresearchersreliedonaclassofproteins,bonemorphogenicproteins,thatcauseneuralstem-cell-likeclusterstolosetheirstemcellproperties,whichinturnstopstheirABIlitytodivide.
Firsttheypretreatedhumanglioblastomacellswithbonemorphogenicprotein4(BMP4),theninjectedthesetreatedcellsintomousebrains.Inmiceinjectedwithcellsthatwerenotpretreated,large,invasivecancersgrew.InthemicewithBMP4-treatedcells,nocancersgrewatall.Threetofourmonthsafterinjection,allmicethatgotuntreatedcellsdied,andnearlyallmicewithBMP4-treatedcellswerealive.
Next,thescientistsdeliveredslow-releaseBMP4-containing"beads"directlyintomousebrainswithimplantedglioblastomacells.Micethatgotemptybeadsdevelopedlargemalignanttumorsanddied.MicewithBMP4beadssurvivedmuchlonger,and80percentsurvivedfourmonthsaftercancercellimplants.
"OurideaistotreatpatientswithBMP4orsomethinglikeitrightaftersurgerytoremoveglioblastomainhopesofpreventingtheregrowthofthecancerandimprovingsurvivaltime,"saysAlessandroOlivi,M.D.,directoroftheDivisionofNeurosurgicalOncologyatHopkinsandacontributortothestudy.
OlivisaysclinicalstudiesusingBMP4couldbeginwithinayearand,ifsuccessful,drugtherapiescouldbeavailabletothepublicwithinthreetofouryears.
"ThiswasproofoftheideathatBMPscouldstopglioblastomabydepletingthestem-cell-likepopulationthatfeedsit,"saysHenryBrem,M.D.,chairmanoftheDepartmentofNeurosurgeryatHopkinsandacollaboratorinthestudy."Thisopensexcitingdoorstofutureresearchintotreatmentsandtherapiesforsuchadevastatingdisease."

