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In Vivo Properties of Three Human HER2eu-Expressing Murine Cell Lines in Immunocompetent Mice

机译:免疫功能小鼠中三种人类表达HER2 / neu的小鼠细胞系的体内特性。

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Backgroundandpurpose:ExpressionoftheHER2euproto-oncogene,areceptor-liketransmembraneproteinexpressedatlowlevelsonsomenormalcells,ismarkedlyincreasedinasubsetofhumanbreast,colon,lung,andovariancancers.AhumanizedHER2euantibodyhasbeentestedasatherapeuticagentinseveralclinicaltrials,withpromisingresults.Wehavedevelopedafamilyofanti-HER2eufusionproteins.Toevaluatetheimmunologicefficacyoftheseproteins,itiscriticalthattumorsexpressingthetargetantigencangrowinimmunologicallyintactmice.brxmlns="http://pub2web.metastore.ingenta.coms/"/brMethod:ToproducemurinetumorsexpressinghumanHER2euonthesurface,CT26,MC38,andEL4murinecelllinesweretransducedbyuseofaretroviralconstructcontainingthecDNAencodingthehumanHER2eugene.brxmlns="http://pub2web.metastore.ingenta.coms/"/brResults:HistologicfeaturesandkineticsoftumorgrowthinsubcutaneousspaceofthehumanHER2eu-expressingcellsweresimilartothoseoftherespectiveparentalcelllines.Intravenousinoculationwiththesecellsinduceddisseminatedmalignantdisease.FlowcytometricandimmmunohistochemicalanalysesoffreshlyisolatedtumorsrevealedinvivoexpressionofhumanHER2eu.SecretionofantigenwasnotdetectedbyuseofanELISA.brxmlns="http://pub2web.metastore.ingenta.coms/"/brConclusion:AlthoughanantibodyresponseagainstthehumanHER2euantigenwasobserved,thisresponsedoesnotaffectthegrowthrateoftheHER2eu-expressingcells.Thesemurinemodelsmaybeusefultoolsforevaluationofanti-cancertherapeuticapproachesthattargethumanHER2eu.
机译:Backgroundandpurpose:ExpressionoftheHER2 / neuproto癌基因,areceptor-liketransmembraneproteinexpressedatlowlevelsonsomenormalcells,ismarkedlyincreasedinasubsetofhumanbreast,结肠癌,肺癌,andovariancancers.AhumanizedHER2 / neuantibodyhasbeentestedasatherapeuticagentinseveralclinicaltrials,withpromisingresults.Wehavedevelopedafamilyofanti-HER2 / neufusionproteins.Toevaluatetheimmunologicefficacyoftheseproteins,itiscriticalthattumorsexpressingthetargetantigencangrowinimmunologicallyintactmice 方法:通过表达包含人类HER2 /中性基因的cDNA的逆转录病毒构建体,转导表达人类HER2 /神经表面的鼠肿瘤,CT26,MC38和EL4鼠细胞系被转导。在人类HER2 / neu表达细胞的皮下空间中的组织学特征和运动软组织与相应的亲代细胞系的相似。 ntdisease.FlowcytometricandimmmunohistochemicalanalysesoffreshlyisolatedtumorsrevealedinvivoexpressionofhumanHER2 / neu.SecretionofantigenwasnotdetectedbyuseofanELISA 结论:AlthoughanantibodyresponseagainstthehumanHER2 / neuantigenwasobserved,thisresponsedoesnotaffectthegrowthrateoftheHER2 / neu的expressingcells.Thesemurinemodelsmaybeusefultoolsforevaluationofanti-cancertherapeuticapproachesthattargethumanHER2 / neu的。

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