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首页> 外文期刊>Comparative Medicine >Decreased Growth Factor Expression through RNA Interference Inhibits Development of Mouse Preimplantation Embryos
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Decreased Growth Factor Expression through RNA Interference Inhibits Development of Mouse Preimplantation Embryos

机译:通过RNA干扰减少生长因子表达抑制小鼠植入前胚胎的发育。

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Mitogenicgrowthfactorsplayanimportantroleincellulardevelopmentanddifferentiation.Thepurposeofthisstudywastoassesstheextenttowhichepidermalgrowthfactor(EGF)andtransforminggrowthfactor#945;(TGF#945;)andtheircognatereceptor(EGFR)arecrucialfornormalpreimplantationembryodevelopment.WeusedRNAinterferencetodecreaseexpressionofgrowthfactorsinpreimplantationmouseembryos.Wemicroinjected1-cellmouseembryosindividuallywithshortinterferingRNA(siRNA)specifictoEGF,TGF#945;,andEGFRandthenanalyzedtemporalandspatialgeneexpressionpatternsatdifferentstagesofdevelopmentbeforeimplantation.TransfectionwithsiRNAsignificantlyreducedgrowthfactorexpressionin1-cell,2-cell,morula,early-blastocyst,andlate-blastocystembryostolevelssimilartothoseinuntreated'cloned'embryosderivedthroughintracytoplasmicnuclearinjection.Inaddition,siRNAeffectivelydecreasedexpressionofmaternallyinheritedgenesbetween24and72haftertransfection,withrecoveryofgeneexpressionduringlate-blastocyststageat96haftertransfection.Furthermore,siRNAsignificantlydecreasedblastocystformation,increasedthenumberofapoptoticcells,andreducedthetotalnumberofdifferentiatedcellsinblastocysts;thesechangesweregreatestafterdecreasingEGFRandofbothEGFandTGF#945;simultaneously.TheseresultssupportourhypothesisthatEGFandTGF#945;arecrucialforembryosurvivalanddevelopment.Further,dysregulatedexpressionofgrowthfactorsisassociatedwithpoordevelopmentofclonedmouseembryos.
机译:Mitogenicgrowthfactorsplayanimportantroleincellulardevelopmentanddifferentiation.Thepurposeofthisstudywastoassesstheextenttowhichepidermalgrowthfactor(EGF)andtransforminggrowthfactor#945;(TGF#945;)andtheircognatereceptor(EGFR)arecrucialfornormalpreimplantationembryodevelopment.WeusedRNAinterferencetodecreaseexpressionofgrowthfactorsinpreimplantationmouseembryos.Wemicroinjected1-cellmouseembryosindividuallywithshortinterferingRNA(siRNA)的specifictoEGF,TGF#945;,andEGFRandthenanalyzedtemporalandspatialgeneexpressionpatternsatdifferentstagesofdevelopmentbeforeimplantation.TransfectionwithsiRNAsignificantlyreducedgrowthfactorexpressionin1细胞,2-细胞,桑椹胚,早期胚泡和晚期胚泡胚细胞水平与未经治疗的“克隆”胚细胞内通过胞浆内核注射而产生的水平相似。另外,siRNA在转染后24至72h之间有效降低母体固有边缘的表达,并在转染后的胚泡阶段重新恢复表达。强烈地减少了胚泡的形成,增加了凋亡细胞的数量,并减少了胚泡中分化的细胞的总数;在降低了EGFR和EGF和TGF#945的同时,我们对这些变化进行了重新测试。

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