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時間:2018-12-09
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1、青島大學碩士學位論文應用SELDI--TOF--MS技術篩選早期胃癌血清生物標志物研究姓名:李春偉申請學位級別:碩士專業(yè):普通外科指導教師:張佃良20110517應用SELDI-TOF-MS技術篩選早期胃癌血清分子標志物研究摘要目的:應用表面加強解吸電離一飛行時間質譜(surface-erthancodlaserdesorption/ionizationtime.of-flightmassspectrometry,SELDI.TOF.MS)技術對胃癌患者血清蛋白指紋圖譜進行分析,篩選候選腫瘤標志物以建立診斷模型,尋找更可靠的評價標準用于早期胃癌診斷和臨床分型以指導個體
2、化治療,旨在進一步提高對腫瘤分期和預后的判斷,以更好地監(jiān)測治療效果。方法:表面加強解吸電離一飛行時間質譜技術及其配套蛋白質芯片檢測169例胃癌患者和83.例健康人的血清蛋白質組圖譜,運用BiomarkerWizardTM和BiomarkerPatternsTM軟件分析處理數據篩選具有明確臨床價值的分子標記物或其組合,以進行早期分子診斷并建立胃癌診斷分類樹模型。’結果:胃癌組血清與正常人血清蛋白質譜共有34蛋白表達存在統計學差異(p3、胃癌與正常人正確分組,靈敏度、特異性分別為93.49%、91.57%;另外,2873m/z,6121m/z和7778m/z蛋白質峰組成診斷模型II,可將早期胃癌與ii/iii/iv期胃癌,其敏感性和特異性分別為89.36%(42/47)、92.62%(113/122)。結論:利用SELDI-0F-MS技術在人血清中可以篩選到早期胃癌快速診斷的特異性標志物,建立早期胃癌診斷的蛋白質模型;該方法在胃癌診斷尤其早期胃癌診斷方面具有重要的價值,值得進一步研究。碩士研究生:李春偉普通外科指導教師:張佃良教授主任醫(yī)師關鍵詞:胃癌分子標志物表面加強解吸電離一飛行時間質譜蛋白質組模式4、./y2“0m4n”3哺刪9眥4、、\\呱8AnalysisofserumbiomarkersscreeningfordiagnosisofstageIgastriccancerusingSELDI-TOF-MSAbstractObjective:Tomakeaproteomicanalysisusingsurface-enhancedlaserdesorption/ionizationtime—of=-flightmassspectrometry(SELDI-TOF—MS)ontheserumofstageIgastriccancerpatientsandestab5、lishaearlydiagnosticmodelforidentifyingstageIgastriccancerpreliminarily.Methods:Serumsamplesfrom169gastriccancerpatientsand83ageandgender-matchedhealthyindividualswereanalyzedbySELDI·-TOF·-MSProteinChiparraytechnology.TheresultingSELDI··TOF——MSspectraldatawereanalyzedusingtheBiomarkerWi6、zardTMandBiomarkerPatternsTMsoftwaretof'mddifferentialproteinsanddevelopaclassificationtreeforgastriccarlcer.Results:Atotalof34masspeakswereidentified.Sixpeaksatmass:chargeratios(nVz)of2873,3163,4526,5762,6121and7778wereusedtoconstructthediagnosticmodelI.ThemodelIcouldeffectivelydisting7、uishgastriccancel-samplesfromcontrolsamples,achievingasensitivityandspecifici夠of93.49%and91.57%,respectively.Inaddition,weidentifiedthreeofthesixproteinpeaksat2873,6121and7778m/z,whichcouldconstructthediagnosticmodelII.ThemodelIIcoulddistinguishbetweenstageIgastriccancerandstag
3、胃癌與正常人正確分組,靈敏度、特異性分別為93.49%、91.57%;另外,2873m/z,6121m/z和7778m/z蛋白質峰組成診斷模型II,可將早期胃癌與ii/iii/iv期胃癌,其敏感性和特異性分別為89.36%(42/47)、92.62%(113/122)。結論:利用SELDI-0F-MS技術在人血清中可以篩選到早期胃癌快速診斷的特異性標志物,建立早期胃癌診斷的蛋白質模型;該方法在胃癌診斷尤其早期胃癌診斷方面具有重要的價值,值得進一步研究。碩士研究生:李春偉普通外科指導教師:張佃良教授主任醫(yī)師關鍵詞:胃癌分子標志物表面加強解吸電離一飛行時間質譜蛋白質組模式
4、./y2“0m4n”3哺刪9眥4、、\\呱8AnalysisofserumbiomarkersscreeningfordiagnosisofstageIgastriccancerusingSELDI-TOF-MSAbstractObjective:Tomakeaproteomicanalysisusingsurface-enhancedlaserdesorption/ionizationtime—of=-flightmassspectrometry(SELDI-TOF—MS)ontheserumofstageIgastriccancerpatientsandestab
5、lishaearlydiagnosticmodelforidentifyingstageIgastriccancerpreliminarily.Methods:Serumsamplesfrom169gastriccancerpatientsand83ageandgender-matchedhealthyindividualswereanalyzedbySELDI·-TOF·-MSProteinChiparraytechnology.TheresultingSELDI··TOF——MSspectraldatawereanalyzedusingtheBiomarkerWi
6、zardTMandBiomarkerPatternsTMsoftwaretof'mddifferentialproteinsanddevelopaclassificationtreeforgastriccarlcer.Results:Atotalof34masspeakswereidentified.Sixpeaksatmass:chargeratios(nVz)of2873,3163,4526,5762,6121and7778wereusedtoconstructthediagnosticmodelI.ThemodelIcouldeffectivelydisting
7、uishgastriccancel-samplesfromcontrolsamples,achievingasensitivityandspecifici夠of93.49%and91.57%,respectively.Inaddition,weidentifiedthreeofthesixproteinpeaksat2873,6121and7778m/z,whichcouldconstructthediagnosticmodelII.ThemodelIIcoulddistinguishbetweenstageIgastriccancerandstag
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