摘要
BackgroundStudyhasshownthatratbonemesenchymalstemcells(MSCs)canbedifferentiatedintoendothelialcellsbyVEGFandb-FGFinvitro.OurpreviousresearchfoundthatafterratboneMSCstreatedbyVEGFandb-FGFgainedthephenotypicandfunctionalfeaturesofendothelialcelllines,withsomedifferencesfromendothelialcelllinesregardtothestabilityandself-replicating.ThisstudywastoexploretheeffectofNotchsignalingonthefunctionsofMSCsdifferentiatedendothelialcells.MethodsRatboneMSCswerecultivatedandtreatedbyVEGF165andb-FGFfor2weekstoinduceendothelialcelldifferentiation.ThegeneofVEGF165wasimportedintodifferentiatedendothelialcells.ThereceptorofNotch1andtheligandofNotchsignalingJagged1weredetectedbyRT-PCRbeforeandafterthetransfection.γ-secretaseinhibitorwasusedtoblockNotchpathway,Cellmigrationabilitywasdetectedbyscarificationtest.Cellswereinoculatedonsemisolidgeltostudytheirabilityofcapillary-likestructureformation.ResultsAftertransfection,VEGF165mRNAwasdetectedonthedifferentiatedendothelialcells.TheexpressionofJagged1’smRNAwasupregulated(1.08±0.01comparedto1.01±0.02,P<0.01)andtherewasnochangeabouttheNotch1.Cellsmigrationabilitywasenhanced[numberofcellsonthescratchedarea:44.95±3.14comparedto41.61±1.42,P<0.05]andtheabilityofformingcapillary-likestructureonsemisolidgelwasnotchanged.Theγ-secretaseinhibitorL-685,458furtherenhancedtheabilitiesofcellmigration[numberofcellsonthescratchedarea:50.28±2.76comparedto44.95±3.14,P<0.05])andcapillary-likestructureformationonsemisolidgel(cellsclassification:4.00±0.63comparedto3.00±0.63,P<0.05).ConclusionsInhibitionofNotchsignalingcanenhancethefunctionsoftheendothelialcellsdifferentiatedfromratMSCs.
出版日期
2015年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
