Fusions of Dendritic Cells and C6 Cells Transfected with TGF-β1 Antisense in Treatment of Intracranial Gliomas-中国期刊网

摘要 Objective:Toinvestigatetheimmunotherapyefficacyoffusioncells(dendritic-C6anti-TGF-β1cells)inthetreatmentofintracranialgliomas.Methods:Dendriticcellswereisolatedfromratbone-marrowprecursorsstimulatedinvitrowithgranulocyte-macrophagecolony-stimulatingfactor(GM-CSF)andInterleukin-4(IL-4).C6anti-TGF-β1cellsoriginallyfromC6celllineofaratglioblastomaweretransfectedwithplasmidofTGF-β1anti-sensegene.FusionsofdendriticcellsandC6anti-TGF-β1cellswerepreparedbypolyethyleneglycol(PEG).TheDC/C6anti-TGF-β1fusioncellswereobservedandconfirmedbylightmicroscopyandscanningelectronmicroscopy.Experimentalratsweredividedintothreegroupsatrandom:C6cells(I),dendritic-C6anti-TGF-β1fusioncellsandC6cells(II)andIMDMmediumonly(III).Thecellswereinjectedintorightparietalloberegionoftheratwithstereotaxictechnique.Histology,tumornecrosisandsurvivaltimewereevaluated.Results:ComparedwiththeratsthatreceivedC6cells(survivalmediantimewaslessthan20days,tumorregionwasseeninallfieldsofobserved),theratsinjectedwithdendritic-C6anti-TGF-β1fusioncellsandC6cellsgotamoreprolongedlifespan(morethan59days),aswellaslesstumorregion(5.01%-6.2%).Therewasnotumornecrosis,butsomegliaswereseeninsurroundings.Allratsweresurvivedandnonecrosiswasobservedinnegativecontrolgroup.StatisticalanalysisshowedthatgroupIIhadsignificantdifferencecomparedwithgroupI.Conclusions:Dendritic-C6anti-TGF-β1fusioncellscouldprolongthelifespanofrats,providingastrategytoachieveanantitumorresponseagainsttumorsinthecentralnervoussystem.

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Fusions of Dendritic Cells and C6 Cells Transfected with TGF-β1 Antisense in Treatment of Intracranial Gliomas

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Fusions of Dendritic Cells and C6 Cells Transfected with TGF-β1 Antisense in Treatment of Intracranial Gliomas

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