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Zebrafish V2 cells develop into excitatory CiD and Notch signalling dependent inhibitory VeLD interneurons

机译:斑马鱼V2细胞发展成兴奋性CiD和Notch信号依赖型抑制性VeLD中神经元

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Thevertebratespinalcordcontainsdistinctclassesofcellsthatformatprecisedorsalndash;ventrallocationsandexpressspecificcombinationsoftranscriptionfactors.Inamniotes,V2cellsdevelopintheventralspinalcord,justdorsaltomotoneurons.AllV2cellsdevelopfromthesameprogenitordomainandhenceareinitiallymolecularlyidentical.However,astheystarttobecomepost-mitoticanddifferentiatetheysubdivideintotwointermingledmolecularly-distinctsubpopulationsofcells,V2aandV2bcells.HereweshowthatthemolecularidentitiesofV2aandV2bcellsareconservedbetweenzebrafishandamniotes.Inzebrafish,thesetwocelltypesbothdevelopintointerneuronswithverysimilarmorphologies,butwhileV2acellsbecomeexcitatoryCircumferentialDescending(CiD)interneurons,V2bcellsbecomeinhibitoryVentralLateralDescending(VeLD)interneurons.Inaddition,wedemonstratethatNotchsignallingisrequiredforV2cellstodevelopintoV2bcells.IntheabsenceofNotchsignalling,allV2bcellsdevelopasV2acells./p/div
机译:Thevertebratespinalcordcontainsdistinctclassesofcellsthatformatprecisedorsalndash; ventrallocationsandexpressspecificcombinationsoftranscriptionfactors.Inamniotes,V2cellsdevelopintheventralspinalcord,justdorsaltomotoneurons.AllV2cellsdevelopfromthesameprogenitordomainandhenceareinitiallymolecularlyidentical.However,astheystarttobecomepost-mitoticanddifferentiatetheysubdivideintotwointermingledmolecularly-distinctsubpopulationsofcells,V2aandV2bcells.HereweshowthatthemolecularidentitiesofV2aandV2bcellsareconservedbetweenzebrafishandamniotes.Inzebrafish,thesetwocelltypesbothdevelopintointerneuronswithverysimilarmorphologies,butwhileV2acellsbecomeexcitatoryCircumferentialDescending(CID)的interneurons,V2bcellsbecomeinhibitoryVentralLateralDescending(草原)interneurons.Inaddition,wedemonstratethatNotchsignallingisrequiredforV2cellstodevelopintoV2bcells.IntheabsenceofNotchsignalling,allV2bcellsdevelopasV2acells

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