简介:PROMOTIONOFINVITROGROWTHOFHUMANMEDULLOBLASTOMACELLSBYEXOGENEOUSIL-6LiuJiai刘佳;LiHong李宏;HamouMarie-France;NicolasdeTribolet(1Di...
简介:代谢组学(metabonomics/metabolomicel是近年来继蛋白质组学、基因组学、转录组学后又一迅速发展的学科川。蛋白质组学和基因组学具有累加性和补偿性,其有效的微小变化可在代谢物上得到放大,故而代谢组学是研究的最终方向。通过研究机体的代谢组变化,能更简易、精确地反映机体状态。作为一门新兴学科,其已成为后基因组时代的研究热点。而骨肉瘤作为骨肿瘤中危害性巨大的疾病,能早期发现、早期预防、早期治疗是减少其危害的最有效办法。骨肉瘤的发生、发展是一个受多基因调控的动态过程,最终导致肿瘤的代谢组学发生变化。而将代谢组学应用于骨肉瘤的研究,将有助于人们了解其发生和发展的机制、明确诊断、监测手术和化疗效果、寻找治疗新靶点等。本文就代谢组学的概况、研究方法及其在骨肉瘤诊治中的应用作一综述。
简介:N^6-methyladenosine(m^6A)isanessentialRNAmodificationthatregulateskeycellularprocesses,includingstemcellrenewal,cellulardifferentiation,andresponsetoDNAdamage.Unsurprisingly,aberrantm6Amethylationhasbeenimplicatedinthedevelopmentandmaintenanceofdiversehumancancers.Alteredm6AlevelsaffectRNAprocessing,mRNAdegradation,andtranslationofmRNAsintoproteins,therebydisruptinggeneexpressionregulationandpromotingtumorigenesis.Recentstudieshavereportedthattheabnormalexpressionofm6Aregulatoryenzymesaffectsm6Aabundanceandconsequentlydysregulatestheexpressionoftumorsuppressorgenesandoncogenes,includingMYC,SOCS2,ADAM19,andPTEN.Inthisreview,wediscussthespecificrolesofm6A“writers",“erasers”,and“readers”innormalphysiologyandhowtheiralteredexpressionpromotestumorigenesis.Wealsodescribethepotentialofexploitingtheaberrantexpressionoftheseenzymesforcancerdiagnosis,prognosis,andthedevelopmentofnoveltherapies.
简介:Objective:Toexploretheprobabilityofvascularendothelialgrowthfactor(VEGF)antisenseoligodeoxynucleotidesasadevelopingnewtherapeuticstrategyforglioma.Methods:VEGFproteinexpressionwasdetectedbyS-Pimmunohistochemicaltechnique.TumorcellapoptosiswasobservedbyTUNELmethod.Results:Comparedwithcontrol,VEGFproteinexpressionwasinhibitedbyantisenseoligodeoxynucleotidesinvitro.Andtheinhibitoryeffectsincreasedwiththeincreasingconcentration.VEGFpositiveratewas82.10%incontrolgroup,whilein2.5,5,10(mol/LAODNgroups,theywere70.00%,57.85%,53.20%respectively.Noinhibitioneffectwasfoundinthecelllinestreatedwithmissenseandsenseoligodeoxynucleotides.Invivo,antisenseoligodeoxy-nucleotidestherapyalsoinhibitedVEGFproteinexpressionandinducedtheincreaseofapoptotictumorcells.However,ithasnoeffectontumorcellproliferation.Conclusion:ItishopefulthatVEGFantisenseoligodeoxynucleotidesmaybeanewgenetherapymethodtogliomathroughitsantiangiogenesiseffectbyinhibitionofVEGF.