In vivo anti-tumor activity of murine hematopoietic stem cells expressing a p185HER2-specific chimeric T-cell receptor gene-中国期刊网

摘要 Wehaveconfirmedefficientanti-tumoractivitiesoftheperipherallymphocytestransducedwithap185HER2-specificchimericT-cellreceptorgenebothinmurineandinhumaninourpreviousstudies.TofurthertestthefeasibilityofchimericT-cellreceptorinabonemarrowtransplantationmodel,wefirst,madetwomurinetumorcelllines:MT901andMCA-205,toexpresshumanp185HER2byretroviralgenetransduction.MurinebonemarrowcellswereretrovirallytransducedtoexpressthechimericT-cellreceptorandgene-modifiedbonemarrowcellsweretransplantedintolethallyirradiatedmouse.Sixmonthsposttransplantation,p185HER2-positivetumorcells:MT-901/HER2orMCA-205/HER2wassubcutaneouslyorintravenouslyinjectedtomakemousemodelssimulatingprimarybreastcancerorpulmonarymetastasis.Theinvivoanti-tumoreffectsweremonitoredbythesizeofthesubcutaneoustumororcountingthetumornodulesinthelungsafterIndiainkstaining.ThesizeofthesubcutaneoustumorwassignificantlyinhibitedandthenumberofpulmonarynodulesweresignificantlydecreasedinmouserecipientstransplantedwithchimericT-cellreceptormodifiedbonemarrowcellscomparedwiththecontrolgroup.Ourresultssuggesttheefficientinvivoanti-tumoractivitiesofchimericT-cellreceptorgenemodifiedbonemarrowcells.

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In vivo anti-tumor activity of murine hematopoietic stem cells expressing a p185HER2-specific chimeric T-cell receptor gene

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In vivo anti-tumor activity of murine hematopoietic stem cells expressing a p185HER2-specific chimeric T-cell receptor gene

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