GM-CSF GENE OR B7-1 GENE MODIFIED MURINE EL-4 CELLS VACCINE-中国Betway体育网页登陆

摘要 Objective:Tostudythevaccinepotencyofgene-modifiedtumorcells.Methods:TheEL-4lymphomawastransducedwithrecombinantretroviruscontainingthemurineGM-CSFgeneorB7-1gene.Theeffectofgenetransductiononantitumorimmunitywasinvestigated.Results:Flowcytometryanalysisshowedthatexpressionoftheirsurfacemarkerbetweenwild-typeEL-4cellsandgenetransducedtumorcellswasthesameexceptforCD80positiveinB7-1genetransducedcells.GM-CSFgeneorB7-1genetransducedEL-4cellsresultedinremarkablelossoftumorigenicityinsyngeneticmice.ThesystemicprotectiveimmunitywasinducedagainstthechallengewithEL-4/wtcells.TherapeuticvaccinewithEL-4/GM-CSForEL/7-1cellscouldretardthegrowthofestablishedearly-stageEL-4/wttumorsignificantly,butnotretardthegrowthoflate-stageEL-4/wttumor.IrradiatedGM-CSFgenetransducedEL-4cellsshowedstrongvaccineeffectagainstEL-4cellchallenge,butirradiatedB7-1genetransducedEL-4cellsshowedweakvaccineeffect.RemarkablecooperativeantitumoreffectagainstEL-4cellchallengewasobservedwhenbothirradiatedEL-4/GM-CSFandEL-4/B7-1wereinoculatedtogether.Conclusion:GM-CSFgeneorB7-1genetransducedcombinationofthetwokindsofvaccinemayhavepotentialapplicationvalueinhumancancertreatment.

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GM-CSF GENE OR B7-1 GENE MODIFIED MURINE EL-4 CELLS VACCINE

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