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如何阅读文献在肿瘤学方面有哪些好的杂志如何快速阅读文献以获取知识论文的主要结构
肿瘤的分子信号转导
fromHanahanandWeinberg2000+genomicinstability
SignalTransductionandCancerLectureI:GrowthFactorsandReceptorsOutline:WhatisSignalTransduction? WhatareGrowthFactors?HowdotheycontributetonormalST?HowisthisSTderegulatedinCancer?
LectureI:GrowthFactorsandReceptorsWhatisSignalTransduction?SignalTransductionistheprocessbywhichacellconvertsanextracellularsignalintoaresponse.Involvedin:Cell-cellcommunicationCell’sresponsetoenvironmentIntracellularhomeostatsis-internalcommunication
GenericSignallingPathwaySignalReceptor(sensor)TransductionCascadeTargetsResponseAlteredMetabolismMetabolicEnzymeGeneRegulatorCytoskeletalProteinAlteredGeneExpressionAlteredCellShapeorMotility
ComponentsofSignallingWhatcanbetheSignal?ExternalmessagetothecellPeptides/Proteins-GrowthFactorsAminoacidderivatives-epinephrine,histamineOthersmallbiomolecules-ATPSteroids,prostaglandinsGases-NitricOxide(NO)PhotonsDamagedDNAOdorants,tastantsSignal=LIGANDLigand-Amoleculethatbindstoaspecificsiteonanothermolecule,usuallyaprotein,iereceptor
ComponentsofSignallingWhatareReceptors?Sensors,whatthesignal/ligandbindstoinitiateSTCellsurfaceIntracellularHydrophillicLigandCell-SurfaceReceptorPlasmamembraneHydrophobicLigandCarrierProteinIntracellularReceptorNucleus
CellSurfaceReceptorTypes:Ligand-gatedionchannel
CellSurfaceReceptorTypes:G-ProteinCoupledReceptor
CellSurfaceReceptorTypes:Enzyme-linkedReceptoregGrowthFactorReceptors
GrowthFactorsLigandswhichbindenzymelinkedreceptorsSignaldiversecellularresponsesincluding:ProliferationDifferentiationGrowthSurvivalAngiogenesisCansignaltomultiplecelltypesorbespecific
FactorPrincipalSourcePrimaryActivityCommentsPDGFplatelets,endothelialcells,placentapromotesproliferationofconnectivetissue,glialandsmoothmusclecellstwodifferentprotein
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