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The planar cell polarity pathway directs parietal endoderm migration

机译:平面细胞极性途径指导顶叶内胚层迁移

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Parietalendoderm(PE)contributestotheyolksacandisthefirstmigratorycelltypeinthemammalianembryo.WecanvisualizePEmigrationeminvitro/emusingtheF9teratocarcinomaderivedembryoidbodyoutgrowthsystemand,showherethatPEmigrationisdirectedbythenon-canonicalWntplanarcellpolarity(PCP)pathwayviaRho/ROCK.Basedongolgiapparatuslocalizationandmicrotubuleorientation,68.6%ofcellsincontroloutgrowthsareorientedinthedirectionofmigration.PerturbationofWntsignalingviasFRPtreatmentresultsinalossoforientationcoupledwithanincreaseincellmigration.InhibitionofthePCPpathwayatthelevelofDaam1alsoresultsinalossofcellorientationalongwithanincreaseincellmigration,asseenwithsFRPtreatment.ConstitutivelyactiveDaamcaninhibitthelossoforientationthatoccurswithsFRPtreatment.WepreviouslydemonstratedthatROCKinhibitionleadstoanincreaseincellmigration,andwenowshowthatthesecellsalsolackorientedmigration.CanonicalWntsignalingortheRacarmofthePCPpathwaydoesnotappeartoplayaroleinPEorientedmigration.ThesedatasuggestthePCPpathwayviaRho/ROCKmodulatesmigrationofPE./p/div
机译:Parietalendoderm(PE)contributestotheyolksacandisthefirstmigratorycelltypeinthemammalianembryo.WecanvisualizePEmigration 体外 usingtheF9teratocarcinomaderivedembryoidbodyoutgrowthsystemand,showherethatPEmigrationisdirectedbythenon canonicalWntplanarcellpolarity(PCP)pathwayviaRho / ROCK.Basedongolgiapparatuslocalizationandmicrotubuleorientation,68.6%ofcellsincontroloutgrowthsareorientedinthedirectionofmigration.PerturbationofWntsignalingviasFRPtreatmentresultsinalossoforientationcoupledwithanincreaseincellmigration.InhibitionofthePCPpathwayatthelevelofDaam1alsoresultsinalossofcellorientationalongwithanincreaseincellmigration,asseenwithsFRPtreatment.ConstitutivelyactiveDaamcaninhibitthelossoforientationthatoccurswithsFRPtreatment.WepreviouslydemonstratedthatROCKinhibitionleadstoanincreaseincellmigration,andwenowshowthatthesecellsalsolackorientedmigration.CanonicalWntsignalingortheRacarmofthePCPpathwaydoesnotappeartoplayaroleinPEorientedmigration.ThesedatasuggestthePCPpathwayviaRho / ROCK调节PE的迁移。

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