简介：Polysocoharibe-peptideofCoriolusVersicolor(PSP)isanewanti-cancerimmunomodulativedrug.Thepresentpaperreportsontheexperimentalresearchdonewiththisdrug.ItwasfoundthatPSPhadtheabilitytorecoverhemolysinHC50,toincreasetheweightofthethymus,andincreasethealexinofserumC3andtheIgGcontentoftumorbearingmice.FSPalsosignificantlyraisedthepha-gocyticactivityofmacrophagesinnormalmice.PSPhadasignificantinhibitoryeffectonP38SandS180cells.Attheconcentrationof1mg/ml,PSPinhibitedtheproliferatingactivityofsomehumantumorcalllines,suchasSGC7901,SPC,SLYandMei.IthadadirecttoxiceffectonSPCcells.PSPsignificantlyinhibitedthesynthesisofnucleicacidsofEhrlichascitescarcinomacells.Inaddition,PSPwasantagonistictothesideeffectsofchemotherapyandradiotherapy.

简介：Objective:Toinvestigatetheimpactofbeta-elemeneinjectiononthegrowthandalpha-tubuleofhumanhepatocarcinomaHepG2cells.Methods:CellproliferationwasassessedbyMTTassay.Cellcycledistributionwasdetectedbyflowcytometry(FCM).ThemRNAexpressionofalpha-tubulinwasmeasuredbyRT-PCR.Westernblotanalysiswasusedtodetermineproteinexpressionofalpha-tubulinandthepolymerizationoftubulin.Results:Beta-elemeneinjectioninhibitedHepG2cellsproliferationinadose-andtime-dependentmanner;FCManalysisindicatedbeta-elemeneinjectioninducedcellcyclearrestedatSphase.RT-PCRandwesternblotanalysisshowedthatbeta-elemeneinjectiondown-regulatedalpha-tublinatbothmRNAandproteinlevels,presentingadose-dependentmanner.Moreover,beta-elemeneinjectionreducedthepolymerizationofmicrotubulesinadose-dependentmanner.Conclusions:Beta-elemeneinjectioncaninhibittheproliferationofhepatomaHepG2cellsandinducecellapoptosis,themechanismmightbepartlyrelatedtothedown-regulationofalpha-tubulinandinhibitionofmicrotubularpolymerization.

简介：Objective:Meningiomasareneoplasmsthatarisefromthemeningesofthecentralnervoussystem(CNS).Theyconstituteabout25.6%ofCNStumorsdiagnosedinEgypt.Somemorphologicalvariantsofmeningiomasdisplayaggressivebehavior,leadingtobrain-invasivegrowthpattern.Althoughmeningiomasareusuallytreatedbycompletesurgicalexcision,theriskofpostoperativerecurrenceremains.Hence,additionalbiomarkersforpredictingaggressivebehaviormustbediscovered.Thisstudyaimstoexploretheclinicalandbiologicalrelevanceoftheproteinexpressionlevelsofβ-cateninandgalectine-3inmeningiomaandtounderstandthepathobiologyofthisneoplasm.Methods:Thisretrospectivestudywascarriedouton153casesofmeningiomabyusingtissuemicroarraysandimmunohistochemistryforβ-cateninandgalectine-3.Results:Highβ-cateninexpressionwassignificantlyassociatedwithtransitionalandmeningiotheliomatousmeningiomas,lowtumorgrade,lowrecurrencerate,andlowincidenceofbraininvasion.Meanwhile,highgalectin-3expressionwasassociatedwithbraininvasion,recurrence,hightumorgrade,andtumortype.Logisticregressionanalysisindicatedthatamongallvariablesincludedinthemodel,β-cateninandgalactin-3expressionlevelsweresignificantpredictorsoftumorrecurrence(P<0.001).Conclusions:Galectin-3andβ-cateninareinvolvedinmeningiomarecurrencebutnotinbraininvasion.Thesemoleculescouldbeimportantpotentialtherapeutictargetsandpredictorsformeningiomas.

简介：Objective:Toobservetheeffectofinhibitionoftelomeraseactivitybyseleniumdioxide(SeO2)onlungcarcinomacelllineGLC-82.Methods:TRAP-PCR-ELISAwasusedtostudythechangesoftelomeraseactivityinhumanpulmonaryadenocarcinomacelllineGLC-82treatedbySeO2atthedifferentconcentrations(3,10,30μmol/L)andfordifferenttimes(24,48,and72h).Results:SeO2inhibitedthetelomeraseactivityofGLC-82atthedifferentconcentrationsaftertreatmentof24,48and72h.Conclusion:SeO2inhibitsfromtelomeraseactivityofhumanlungcarcinomalineGLC-82.Theeffectofinhibitionisdose-dependantandtime-dependant.

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简介：Objective:Toinvestigatetheexpressionofmatrixmetalloproteinase-7(MMP-7)andFasligand(FasL)ingastriccancerandexploretheirroleinprogressionofgastriccancer.Methods:Formalin-fixedparaffinandembeddedtissuesofprimarygastriccancerandadjacentnon-tumormucosafrom113caseswereevaluatedforMMP-7,FasLandCapase-3expressionbystreptavidin-peroxidase(S-P)immunohistochemistry.Theexpressionofthefirsttwoproteinsincancercellsofprimaryfociwascomparedwithclinicopathologicalparametersoftumors.WealsoobservedthecorrelationofMMP-7andFasLexpressionwithCaspase-3expressionincancercellsofprimaryfoci.Results:MMP-7positiveimmunostainingwaslessfrequentlydetectedinadjacentepithelialcellsthanincancercellsofprimaryfociofgastriccancer(P<0.05,29.2%vs69.0%),andsowasFasL(P<0.05,34.5%vs54.0%).MMP-7expressionwasassociatedwithtumorsize,Borrmann'sclassification,invasivedepth,metastasisandTNMstaging(P<0.05),butnotwithgrowthpattern,Lauren'sclassification,orhistologicalclassification(P>0.05).FasLexpressionwascorrelatedwithtumorsize,invasivedepth,metastasis,Lauren'sclassification,histologicalclassification(P<0.05),whilenotwithBorrmann'sclassification,TNMstagingorgrowthpattern(P>0.05).CancercellsofprimaryfociexpressedlessCaspase-3thantheiradjacentepithelialcells(P<0.05,32.7%vs50.4%).TherewasanobviouscorrelationbetweenFasL,MMP-7andCaspase-3expressionincancercellsofprimaryfoci(P<0.05).Co-expressionofMMP-7andFasLparalleledwithCaspase-3expressionincancercellsofprimaryfoci(P<0.05).Conclusion:MMP-7andFasLexpressionwasup-regulatedingastriccarcinogenesisandwasprincipallyinvolvedinprogressionofgastriccancer.FasLexpressioncouldreflectthedifferentiationofgastriccancercellsandunderliethemolecularmechanismsofdifferentpathwaysofgastrictumorigenesis.Co-expressionofMMP-7andFasLcouldhaveapoptosis-inducingeffe

简介：在乳癌房间在Notch-1小径上调查trastuzumab的效果和机制的目的，认出在trastuzumab抵抗表明小径的Notch-1的意义。

简介：Objective:TodetecttheeffectofarsenictrioxideorATRAonAPLcellsorHL-60cellsandtoinvestigatethemechanismofthehyperleukocytosisanddetectthecrossresistancebetweenATRAandarsenictrioxide.Methods:Thenumberofpromyelocytesormorematuredgranulocyteswerecountedbyregularmethod,MTTtestwasusedtomeasuretheproliferationofHL-60cellsorAPLcells,flowcytometryanalysistomeasuretheapoptosis,NBTmethodtodetectthedifferentiationofHL-60cellsorAPLcells.Results:TheproliferationofprimaryAPLcellsorHL-60cellscouldbeinhibitedinvitrobyeitherarsenictrioxideorATRA,whichcouldinduceobviousapoptosisorobviousdifferentiationofprimaryAPLcellsorHL-60cells.InhibitionofproliferationorapoptosisofATRAresistantHL-60cellswereachievedbyexposuretoarsenictrioxideinvitro.Ontheotherhand,theresultsofinvivotreatmentshowedthatarsenictrioxidealsoinduceofhyperleukocytosis.Conclusion:TheresultsindicatedthatthehyperleukocytosisinducedbyATRAisnotcontributedtothemechanismofmoredifferentiationthanapoptosis,therewasnotcrossresistancebetweenATRAandarsenictrioxide.

简介：Objective:Toexploretheeffectofearlyenteralnutrition(EN)onpostoperativenutritionalstatus,intestinalpermeability,andimmunefunctioninelderlypatientswithesophagealcancerorcardiaccancer.Methods:Atotalof96patientswithesophagealcancerorcardiaccancerwhounderwentsurgicaltreatmentinourhospitalfromJune2007toDecember2010wereenrolledinthisstudy.TheyweredividedintoENgroup(n=50)andparenteralnutrition(PN)group(n=46)basedonthenutritionsupportmodes.Thebodyweight,timetofirstflatus/defecation,averagehospitalstay,complicationsandmortalityafterthesurgeryaswellastheliverfunctionindicatorswererecordedandanalyzed.Peripheralbloodsampleswerecollectedonthedays1,4and7aftersurgery.Theplasmadiamineoxidase(DAO)activityandD-lactatelevelweredeterminedtoassesstheintestinalpermeability.TheplasmaendotoxinlevelsweredeterminedusingdynamicturbidimetricassaytoassesstheprotectiveeffectofENonintestinalmucosalbarrier.Thepostoperativebloodlevelsofinflammatorycytokinesandimmunoglobulinsweredeterminedusingenzyme-linkedimmunosorbentassay(ELISA).Results:Afterthesurgery,thetimetofirstflatus/defecation,averagehospitalstay,andcomplicationsweresignificantlylessintheENgroupthanthoseinthePNgroup(P<0.05),whereastheENgrouphadsignificantlyhigheralbuminlevelsthanthePNgroup(P<0.05).Onthe7thpostoperativeday,theDAOactivity,D-lactatelevelandendotoxincontentsweresignificantlylowerintheENgroupthanthoseinthePNgroup(allP<0.05).Inaddition,theENgrouphadsignificantlyhigherIgA,IgG,IgM,andCD4levelsthanthePNgroup(P<0.05)butsignificantlylowerIL-2,IL-6,andTNF-αlevels(P<0.05).Conclusions:Inelderlypatientswithesophagealcancerorcardiaccancer,earlyENaftersurgerycaneffectivelyimprovethenutritionalstatus,protectintestinalmucosalbarrier(byreducingplasmaendoxins),andenhancetheimmunefunction

简介：TheeffectofTPA,apotenttumorpromoter,onSSV-NIH3T3cellsinserum-freemediumwasinvestigated.TPAstimulatedDNAsynthesisofSSV-NIH3T3cellsonthethirddayofcultureinSFM.InSDS-PAGFofmediumconditionedbyTPA-treatedSSV-NIH3T3cells(inSFM+TPA),theamountsoffourproteinsof31.0Kd,28.5Kd,25.5Kdand13.5Kdstrikinglyincreasedoverthatofnon-TPA-treatedcounterpart(inSFM).ThePDGF-likeactivitywasalsodetectedinCMofSFM+TPA.WheninsulinandEGFweredrownofftheSFM+TPA(SFM-Ins-EGF+TPA),TPAlostitsabilitytostimulateDNAsynthesisofSSV-NIH3T3cellsonthethirddayandSDS-PAGEoftheconditionedmediumshowedthattheamountsofthefourproteinsnotedabovegratelyreduced.However,cellsinSFM-Ins-EGF+TPAwereinalmostthesamegrowthconditionascellsincompleteSFM+TPAonthethirddayofculture.Resultswerediscussedinthepaper.

简介：Objective:TostudythesynergiceffectsofIL-12andB7-1transfectantonantitumorimmunityinvivo.Methods:TheretrovirusvectorencodingmIL-12andmB7-1genewastranfectedintoEL-4thymiclymphomacellsrespectively.Thecellswereusedastumorvaccineandthetherapeuticeffectwasobserved.Results:IncontrasttothemiceimmunizedwithEL-4/WtorEL-4/Neogroups,thetumorigenicityofEL-4/IL-12transfectantwasdecreased(P<0.001).TheEL-4/IL-12andEL-4/B7-1cellsirradiatedwith60CoshowedsignificantsystematicprotectiveeffectsagainsttherechallengeofEL-4/Wt.60CoirradiatedEL-4/IL-12cellsdelayedtheoccurrenceoftumorandprolongedthesurvivalperiodoftumorbearingmice.CombinationofthevaccinesofEL-4/IL-12andEL-4/B7-1resultedintheenhancedtherapeuticeffectcomparedwitheachsingletransfectantgroup(P<0.001).Conclusion:TheresultsshowedthatIL-12transducedcellscouldenhancetheantitumorimmunityofhostascancervaccine.CombinationoftheEL-4/IL-12andEL-4/B7-1transfectantcouldimproveimmunityofhostandisaprospectcancervaccine.

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简介：Objective:Epidermalgrowthfactorreceptor(EGFR)activationwasreportedtoupregulateprogrammeddeath-ligand1(PD-L1)expressioninlungcancercellsandsubsequentlycontributetoimmuneescape,indicatingitscriticalroleinEGFR-drivenlungtumors.ThisstudycharacterizedPD-L1expressioninpatientswithsurgicallyresectedEGFR-mutantnon-smallcelllungcancer(NSCLC).TheeffectofPD-L1expressiononclinicaloutcomeswasalsoinvestigatedinadvancedEGFR-mutantNSCLCtreatedwithEGFR-tyrosinekinaseinhibitors(TKIs).Methods:Intotal,73patientswithsurgicallyresectedNSCLCandEGFRmutationswereidentified.PD-L1expressionandCD8+tumor-infiltratinglymphocyte(TIL)densitywereassessedbyimmunohistochemistry.AliteraturereviewofpublicationsthatassessedthepredictiveandprognosticvalueofPD-L1expressioninadvancedEGFR-mutantNSCLCpatientstreatedwithEGFRTKIswasperformed.Results:Nineteen(26.0%)patientswerepositiveforPD-L1expression,whichwassignificantlyassociatedwithconcomitantKRASmutation(P=0.020)andmarginallyassociatedwithhigherCD8+TILsdensity(P=0.056).PositivePD-L1expressionwasassociatedwithmarkedlyinferioroverallsurvival(OS)inmultivariateanalysis(P=0.032).ThecombinationofPD-L1andCD8+TILsexpressioncouldbeusedtostratifythepopulationintothreegroupswithdistinctprognoses.Ameta-analysisofsixpublicationsshowedthatpositivePD-L1expressionwasnotassociatedwithOS[hazardratio(HR)=0.90;95%confidenceinterval(CI),0.42–1.38]orprogression-freesurvival(HR=1.03;95CI,0.73–1.33)inadvancedEGFR-mutantNSCLCpatientsreceivingEGFR-TKIs.Conclusions:PD-L1expressiontendedtocorrelatewithCD8+TILexpression,concomitantKRASmutation,andpoorsurvivalinsurgicallyresectedEGFR-mutantNSCLC.PD-L1expressionwasneitherthepredictivenortheprognosticfactorinadvancedEGFR-mutantNSCLCpatientstreatedwithEGFR-TKIs.

简介：Objective:Fusogenicendogenousretroviralsyncytinplaysanimportantroleintheformationofsyncytiotrophoblastsinhumanplacenta.Apartfromitsexpressioninplacenta,brainandtestis,syncytinhasalsobeenfoundinmanycancers.Althoughsyncytinhasbeenproposedtoserveasapositiveprognosticmarkerinsomecancers,theunderlyingmechanismisunclear.Theaimofthisstudyistoevaluatetheeffectsofsyncytinexpressionontheinvasivephenotypeofmelanomacells.Methods:Theeukaryoticexpressionplasmidforsyncytin-EGFPwasconstructedandtransfectedintoB16F10melanomacells.TheeffectofsyncytinontheinvasionpotentialoftumorcellswasevaluatedinB16F10sublinecellsthatstablyexpressedsyncytin-EGFPfusionproteinorEGFPalone.Results:TheB16F10sublinesthatstablyexpressedsyncytin-EGFPorEGFPalonewereestablishedrespectivelyandconfirmedbyimmunofluorescentandimmunoblottingassay.SyncytinexpressioninB16F10cellswasassociatedwithdecreasedcellproliferation,migrationandinvasion.Multinucleatedgiantcellsthatcontainedasmanyasfivenucleiwereinducedinsyncytin-expressingcells.Inaddition,syncytinexpressiondidnotalterthesensitivityofB16F10cellstotrichosanthin,atoxinthatdamagessyncytiotrophoblastsmoreefficientlythanothertissues.Conclusions:Theseresultssuggestthatsyncytinexpressioninsomecancersmayconfinetheirinvasionpotentialandthusserveasapositiveprognosticfactor.更多还原

简介：在忍受人的上皮的裸体老鼠在下的xenotransplanted肿瘤的生长上调查dys心理的压力效果的目的卵巢的癌，和对P53和NFBp65表情的影响。

简介：FivehundredsandfiftyLACAmicewereusedin3batchesforstudyingtheanticarcinogeniceffectofKonjakupowderonMNNG-inducedlungcancers.Thesemice(withineachbatch)wererandomlyallocatedtofourgroups,namely,positivecontrol(MNNG),Amorphophalluskonjac(A.K.),complex(MNNG+A.K.),andblankcontrol(C)group.InMNNGgroup,MNNG(250μg)wasinjectedintravenouslyoncefivedaysforseventimesineachmouse,thetotaldosageofMNNGbeing1.75mk.InA.K.group,accordingtow/w,8%A.K.waswellmixedinto92%commondietforlong-termbreeding.Incomplexgroup,MNNGwasgivenasthatinMNNGgroupandthemicewererearedasthoseinA.K.group.ThemiceinMNNGgroupandinCgroupwereallrearedbycommondiet.TheresultsshoweddifferentdegreesofanticarcinogenicandpreventiveeffectofrefinedA.K.onMNNG-inducedlungcancersinLACAmice.A.K.notonlyexertedeffectonthenumberofinducedcancerandprecancer,causingadropofthecancerousratefrom70.87%to19.3

简介：Objective:Non-smallcelllungcancer(NSCLC)patientswithepidermalgrowthfactorreceptor(EGFR)-activatingmutationshavehigherresponserateandmoreprolongedsurvivalfollowingtreatmentwithsingle-agentEGFRtyrosinekinaseinhibitor(EGFR-TKI)comparedwithpatientswithwild-typeEGFR.However,allpatientstreatedwithreversibleinhibitorsdevelopacquiredresistanceovertime.Themechanismsofresistancearecomplicated.ThelackofestablishedtherapeuticoptionsforpatientsafterafailedEGFR-TKItreatmentposesagreatchallengetophysiciansinmanagingthisgroupoflungcancerpatients.ThisstudyevaluatestheinfluenceofEGFR-TKIretreatmentfollowingchemotherapyafterfailureofinitialEGFR-TKIwithinatleast6monthsonNSCLCpatients.Methods:Thedataof27patientswhoexperiencedtreatmentfailurefromtheirinitialuseofEGFR-TKIwithinatleast6monthswereanalyzed.Afterchemotherapy,thepatientswereretreatedwithEGFR-TKI(gefitinib250mgqdorerlotinib150mgqd),andthetumorprogressionwasobserved.Thepatientswereassessedforadverseeventsandresponsetotherapy.TargetedtumorlesionswereassessedwithCTscan.Results:Ofthe27patientswhoreceivedEGFR-TKIretreatment,1(3.7%)patientwasobservedincompleteresponse(CR),8(29.6%)patientsinpartialresponse(PR),14(51.9%)patientsinstabledisease(SD),and4(14.8%)patientsinprogressivedisease(PD).Thediseasecontrolrate(DCR)was85.2%(95%CI:62%-94%).Themedianprogression-freesurvival(mPFS)was6months(95%CI:1-29).Ofthe13patientswhoreceivedthesameEGFR-TKI,1patientinCR,3patientsinPR,8patientsinSD,and2patientsinPDwereobserved.TheDCRwas84.6%,andthemPFSwas5months.Ofthe14patientswhoreceivedanotherEGFR-TKI,nopatientinCR,6patientsinPR,6patientsinSD,and2patientsinPDwereobserved.TheDCRwas85.7%,andthemPFSwas9.5months.SignificantdifferencewasfoundbetweenthetwogroupsinPFSbutnotinresponserateorDCR.Conclusion:RetreatmentofEGFR-TKIscanbeconsideredano

简介：Objective:Tostudytheeffectofactivecompound6FandAfromPterissemipinnataL.(PsL)ontheactivitiesofDNAtopoisomerase(TOPO)IandII,activitiesofcytosolicandmembraneTPK,andexpressionofoncogenec-mycinlungadenocarcinomacells.Methods:Theeffectofcompound6FandAonactivitiesofcytosolicandmembraneTPKwasmeasuredbyscintillationcounting;theeffectofcompoundAonexpressionofoncogenec-mycwasdeterminedbyflowcytometryindirectfluorimetry.Results:compound6FandAcouldinhibittheactivitiesofTOPOI,andtheystronglyinhibitedtheTOPOIIin0.01mg/Land10.0mg/Lrespectively.CompoundAslightlyinhibitedtheactivitiesofmembraneTPK,butnotthecytosolicone.CompoundAcouldinhibittheexpressionofoncogenec-myc.Conclusion:Topoisomerasesaretargetofcompound6FandA.CompoundAcouldslightlyinhibittheactivitiesofTPK,andshowedaninhibitoryeffectontheexpressionofoncogenec-myc.