简介：ASchwanncellhasregenerativecapabilitiesandisanimportantcellintheperipheralnervoussystem.ThismicroarraystudyispartofabioinformaticsstudythatfocusesmainlyonSchwanncells.Microarraydataprovideinformationondifferencesbetweenmicroarray-basedandexperiment-basedgeneexpressionanalyses.Accordingtomicroarraydata,severalgenesexhibitincreasedexpression(foldchange)buttheyareweaklyexpressedinexperimentalstudies(basedonmorphology,proteinandmRNAlevels).Incontrast,somegenesareweaklyexpressedinmicroarraydataandhighlyexpressedinexperimentalstudies;suchgenesmayrepresentfuturetargetgenesinSchwanncellstudies.Thesestudiesallowustolearnaboutadditionalgenesthatcouldbeusedtoachievetargetedresultsfromexperimentalstudies.Inthecurrentbigdatastudybyretrievingmorethan5000scientificarticlesfromPubMedorNCBI,GoogleScholar,andGoogle,1016(up-anddownregulated)genesweredeterminedtoberelatedtoSchwanncells.However,noexperimentwasperformedinthelaboratory;rather,thepresentstudyispartofabigdataanalysis.OurstudywillcontributetoourunderstandingofSchwanncellbiologybyaidingintheidentificationofgenes.Basedonacomparativeanalysisofallmicroarraydata,weconcludethatthemicroarraycouldbeagoodtoolforpredictingtheexpressionandintensityofdifferentgenesofinterestinactualexperiments.

简介：Objective:Multiplemechanismsunderlyingthedevelopmentofportalveintumorthrombus(PVTT)inhepatocellularcarcinoma(HCC)havebeenreportedrecently.However,theoriginsofPVTTremainunknown.Increasingmulti-omicsdataonPVTTsinHCCshavemadeitpossibletoinvestigatewhetherPVTTsoriginatefromthecorrespondingprimarytumors(Ts).Methods:TheclonalrelationshipbetweenPVTTsandtheircorrespondingprimaryTswasinvestigatedusingdatasetsdepositedinpublicdatabases.OneDNAcopynumbervariationsdatasetandthreegeneexpressiondatasetsweredownloadedfortheanalyses.ClonalityanalysiswasperformedtoinvestigatetheclonalrelationshipbetweenPVTTsandTsfromanindividualpatient.DifferentialgeneexpressionanalysiswasappliedtoinvestigatethegeneexpressionprofilesofPVTTsandTs.Results:Oneoutof19PVTTshadnoclonalrelationshipwithitscorrespondingT,whereastheothersdid.ThePVTTswithindependentclonaloriginshoweddifferentgeneexpressionandenrichmentinbiologicalprocessesfromtheprimaryTs.Basedontheuniquegeneexpressionprofiles,agenesignatureincluding24geneswasusedtoidentifypairsofPVTTsandprimaryTswithoutanyclonalrelationship.ValidationinthreedatasetsshowedthatthesetypesofpairsofPVTTsandTscanbeidentifiedbythe24-genesignature.Conclusions:OurfindingsshowadirectevidenceforPVTToriginandconsolidatetheheterogeneityofPVTTsobservedinclinic.TheresultssuggestthatPVTTinvestigationatamolecularlevelisclinicallynecessaryfordiagnosisandtreatment.