Alpha-actinin expression at different differentiating time points from temporal lobe cerebral cortex neural stem cells to neuron-like cells using energy dispersive X-ray analysis-中国Betway体育网页登陆

摘要 BACKGROUND:Alpha-actinin(α-actinin)playsakeyroleinneuronalgrowthconemigrationduringdirectionaldifferentiationfromneuralstemcells(NSCs)toneurons.OBJECTIVE:Todetectinsitumicrodistributionandquantitativeexpressionofα-actininduringdirectionaldifferentiationofNSCstoneuronsinthetemporallobecerebralcortexofneonatalrats.DESIGN,TIMEANDSETTING:BetweenJanuary2006andDecember2008,cultureanddirectionaldifferentiationofNSCswereperformedatDepartmentofHistologyandEmbryology,PreclinicalMedicalCollege,ChinaMedicalUniversity.ImmuneelectronmicroscopywasperformedatDepartmentofHistologyandEmbryologyandDepartmentofElectronMicrology,PreclinicalMedicalCollege,ChinaMedicalUniversity.SpectrumanalysiswasperformedatLaboratoryofElectronMicroscopy,MentalResearchInstitute,ChineseAcademyofSciences.MATERIALS:Basicfibroblastgrowthfactor,epidermalgrowthfactor,brain-derivednervegrowthfactor,type-1insulinlikegrowthfactor,andα-actininantibodywereprovidedbyGibcoBRL,USA;rabbit-anti-ratnestinmonoclonalantibody,rabbit-anti-ratneuronspecificenolasepolyclonalantibody,andEDAX-9100energydispersiveX-rayanalysiswereprovidedbyPHILIPSCompany,Netherlands.METHODS:NSCs,followingprimaryandpassageculture,weredifferentiatedwithserumculturemedium(DMEM/F_(12)+10%fetalbovineserum+2ng/mLbrain-derivednervegrowthfactor+2ng/mLtype-1insulinlikegrowthfactor).MAINOUTCOMEMEASURES:Expressionofα-actinininneuron-likecellswasquantitativelyandqualitativelydetectedwithimmunocytochemistryusingenergydispersiveX-rayanalysis.RESULTS:Immunocytochemistry,combinedwithelectronmicroscopy,indicatedthatpositiveα-actininexpressionwaslikeaspheroidparticlewithhighelectrondensity.Inaddition,theexpressionwasgraduallyconcentratedfromthenuclearedgetothecytoplasmandexpandedintodevelopingneurites,duringdifferentiationofneuralstemcellstoneurons.Conversely,energydispersive

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Alpha-actinin expression at different differentiating time points from temporal lobe cerebral cortex neural stem cells to neuron-like cells using energy dispersive X-ray analysis

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