学科分类
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272 个结果
  • 简介:Somaticstemcells(SSCs),beingessentialinmaintaininghomeostasisofnormaltissue,replenishdyingcellsandregeneratedamagedtissuesfororganism.Ontheotherhand,withtheself-renewedability,SSCsareidealcellulartargetstobeacquiredinmultiplemutationstransformingSSCstocancerstemcells(CSCs)whichcausemalignanciesandevenrecurrenceaftercancertreatmentifCSCsfailtobeeradicated(1).OneyearafterDrs.JohnB.GurdonandShinyaYamanakasharedthe2012NobelPrizeinPhysiologyorMedicinefortheirdiscoverythatmaturecellscanbereprogrammedtobecome

  • 标签: 癌症治疗 癌细胞 肿瘤干细胞 平移 成体干细胞 精原干细胞
  • 简介:Cancertreatmentfailure,drugresistance,ormetastaticrecurrencearethoughttobecausedmainlybytheexistenceofaverysmallnumberofcancerstemcells(CSCs).Thecharacteristicsofthissubgroupofcellsincludeself-renewal,tumorigenesis,multipledifferentiationandhighinvasiveness,metastasis,anddrugresistancepotential.ManystudieshavedemonstratedthatCSCsplayimportantrolesintumorgrowth,spreadandmetastaticrelapseaftertreatment,andarecloselyrelatedtotheprognosisofpatients.Fromatherapeuticviewpoint,deepinsightsintotheCSCsbiology,developmentofspecifictherapeuticstrategiesfortargetingCSCs,andcharacterizationoftheirmicroenvironmentcouldbeanidealwaytocombatcancer.

  • 标签: 肿瘤干细胞 肿瘤治疗 应用 临床 干细胞生物学 特异性治疗
  • 简介:Cancergenomicsisarapidlygrowingdisciplineinwhichthegeneticmolecularbasisofmalignancyisstudiedatthescaleofwholegenomes.Whilethedisciplinehasbeensuccessfulwithrespecttoidentifyingspecificoncogenesandtumorsuppressorsinvolvedinoncogenesis,itisalsochallengingourapproachtomanagingpatientssufferingfromthisdeadlydisease.Specificallycancergenomicsisdrivingclinicaloncologytotakeamoremolecularapproachtodiagnosis,prognostication,andtreatmentselection.Wereviewhererecentworkundertakenincancergenomicswithanemphasisontranslationofgenomicfindings.Finally,wediscussscientificchallengesandresearchopportunitiesemergingfromfindingsderivedthroughanalysisoftumorswithhigh-depthsequencing.

  • 标签: 基因组学 恶性肿瘤 癌症 配置文件 翻译 个性化
  • 简介:尽管氧化是最普通生物并且精力生产反应,因为象自由激进分子和过氧化物那样的氧化的产品损坏细胞的部件,氧化应力对房间有害,引起几疾病。在DNA的损坏为癌症形成和前进负责。然而,几酶象superoxidedismutase那样,过氧化氢酶,谷胱甘肽peroxidase,谷胱甘肽reductase,是的谷胱甘肽S-transferase等等行为影响氧化应力的抗氧化剂。在这些酶的多型性应当与DNA损坏被联系,随后,个人癌症冒险危险性。这篇评论文章试图进一步阐明在由在癌症病人有关表示层次和抗氧化剂酶的基因多型性总结一些重要学习的调查结果的抗氧化剂酶和癌症之间的关系。

  • 标签: Superoxide dismutase 过氧化氢酶 谷胱甘肽 peroxidase GLUTATHIONE-S-TRANSFERASE 癌症
  • 简介:Cancerhasbecometheleadingcauseofdeath.Theprogressindiagnosisandtreatmentisstilllimited.Overthepastthreedecades,emergenceandrapiddevelopmentofnanotechnologyhavebroughtnewhopesforcancertherapy.Arepertoireofnanomaterialswithcontrollablesize-,shape-,andcomposition-dependentphysiochemicalproperties

  • 标签: 癌症治疗 纳米医学 纳米技术
  • 简介:DuckhepatitisBvims(DHBV)DNAwasdetectedindifferenttumorousnodulesofduckswithhepaticmulticentriccancerorintrahepaticmetastasisbySouthernblottechnique.Among7duckswithhepatocellularcarcinomaofmultipletumornodules,thehybridizationpatternofIntegratedDHBVDNAIndifferenttumorousnoduleswasidenticalin3casesanddifferentin2cases.OnecaseshowedasimilarhybridizationpatternintwotumorousnodulesandotheronewasnegativetorDHBVDNA.IntegratedDHBVDNAwasalsoidentifiedinametastaticlungcancerofduckswithhepatocellularcarcinoma.Thehybridizationpatternofmetastasisoflungswasasthesomeasthatinprimaryhepatocellularcarcinoma.ThesamediscretehybridizationbandsInthedifferenttumorousnodulesindicatethatthesenodulesmightarisefromonetransformedcell.ThedifferenthybridizationpatternsInvarioustumorousnodulesshowthatthesetumorousnodulesmightarisefromvarioustransformedcells.Theresultssuggestthatthehyb

  • 标签: NODULES DNA DHBV transformed lungs metastasis
  • 简介:Ovariancancer(OC)istheseventhmostcommonlydiagnosedcanceramongwomenintheworldandthetenthmostcommoninChina.EpithelialOCisthemostpredominantpathologicsubtype,withfivemajorhistotypesthatdifferinorigination,pathogenesis,molecularalterations,riskfactors,andprognosis.Geneticsusceptibilityismanifestedbyrareinheritedmutationswithhightomoderatepenetrance.Genome-wideassociationstudieshaveadditionallyidentified29commonsusceptibilityallelesforOC,including14subtype-specificalleles.Severalreproductiveandhormonalfactorsmaylowerrisk,includingparity,oralcontraceptiveuse,andlactation,whileotherssuchasolderageatmenopauseandhormonereplacementtherapyconferincreasedrisks.Theseassociationsdifferbyhistotype,especiallyformucinousOC,likelyreflectingdifferencesinetiology.EndometrioidandclearcellOCshareasimilar,uniquepatternofassociationswithincreasedrisksamongwomenwithendometriosisanddecreasedrisksassociatedwithtuballigation.OCrisksassociatedwithothergynecologicalconditionsandprocedures,suchashysterectomy,pelvicinflammatorydisease,andpolycysticovariansyndrome,arelessclear.Otherpossibleriskfactorsincludeenvironmentalandlifestylefactorssuchasasbestosandtalcpowderexposures,andcigarettesmoking.Theepidemiologyprovidescluesonetiology,primaryprevention,earlydetection,andpossiblyeventherapeuticstrategies.

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  • 简介:Breastcancerisoneofthemostcommoncancersaroundtheworldwithapproximately1.6millionnewcasesand425thousanddeathsfromthediseasein2010(1).Whileearlydetectionmethodsandtreatmenthavecontinuouslyevolvedandimprovedovertheyears,thereisstillastrong

  • 标签: HEDGEHOG 乳腺癌 信号通路 恶性肿瘤 个性化 治愈率
  • 简介:胰腺的癌症继续是有仍然高的死亡和差的幸存的致命的恶意。尽管有重要进展,很少进步在理解,诊断,和常规、新奇的治疗的存取在先进胰腺的癌症的治疗上被取得了。损害的分子的病理是我们位于这癌症的发展下面的机制的理解的钥匙并且将可能在更早的诊断和更好治疗学的结果帮助我们。新治疗策略和创新治疗的更小心的评估清楚地为这疾病被需要。鉴于许多调查结果,胰腺的癌症应该被认为是全身的疾病,并且在最后几年,调查者获得了导致恶意的发展的分子的生物学和事件的更好的理解。我们这里在在胰腺的癌症的为通常变异的基因的全身的探索考察新奇开发。

  • 标签: 胰腺的癌症 上皮的生长因素 矩阵 metalloproteinases ONCOGENES
  • 简介:AccordingtoGLOBOCAN2012,livercanceristhesixthmostcommoncancerintheworld.Therewere782,000newcasesdiagnosedin2012,with50%inChinaalone.Livercanceristhesecondmostcommoncauseofcancerdeathworldwideanditsprognosisisverypoor.TheWorldHealthOrganization(WHO)declared745,517deathscausedbylivercancerin2012,withmorethanhalffromChina~1.

  • 标签: 肝癌 展望 世界卫生组织 死亡原因 世界范围 癌症
  • 简介:Humanendogenousretroviruses(HERVs)areretrovirusesthatinfectedhumangenomemillionsofyearsagoandhavepersistedthroughouthumanevolution.About8%ofourgenomeiscomposedofHERVs,mostofwhicharenonfunctionalbecauseofepigeneticcontrolordeactivatingmutations.However,acorrelationbetweenHERVsandhumancancerhasbeendescribedandmanytumors,suchasmelanoma,breastcancer,germcelltumors,renalcancerorovariancancer,expressHERVproteins,mainlyHERV-K(HML6)andHERV-K(HML2).AlthoughthecausativeroleofHERVsincanceriscontroversial,datafromanimalmodelsdemonstratedthatendogenousretrovirusesarepotentiallyoncogenic.HERVproteinexpressioninhumancellsgeneratesanimmuneresponsebyactivatinginnateandadaptiveimmunities.SomeHERV-derivedpeptideshaveantigenicproperties.Forexample,HERV-K(HML-6)encodestheHER-KMELpeptiderecognizedbyCD8+lymphocytes.Inaddition,HERVsaretwoedgedimmunomodulators.HERVsshowimmunosuppressiveactivity.Thepresenceofgenomicretroviralelementsinhost-cellcytosolmayactivateaninterferontypeIresponse.Therefore,targetingHERVsthroughcellularvaccinesorimmunomodulatorydrugscombinedwithcheckpointinhibitorsisattractinginterestbecausetheycouldbeactiveinhumantumors.

  • 标签: 内源性逆转录病毒 人类基因组 癌症 免疫反应 免疫调节剂 生殖细胞
  • 简介:AsreadersofCancerBiologyandMedicinewellknow,therehasbeenaseismicshiftinhumanmolecularbiologyoverthepastfewyears,asmomentousinitsownwayasthediscoveryofthedouble-helicalstructureofDNAbyWatsonandCrick60yearsago,theelucidationofthegeneticcodeshortlythereafter,theadventofrecombinantDNAandgenecloning

  • 标签: DNA重组 管理 癌症 聚合酶链反应 基因编码 肿瘤生物学
  • 简介:Objective:Weretrospectivelyanalyzedtheclinicalprognosticvalueofthe8theditionoftheAmericanJointCommitteeonCancer(AJCC)stagingsystemforluminalAbreastcancer.Methods:Usingboththeanatomicandprognosticstaginginthe8theditionofAJCCcancerstagingsystem,werestagedpatientswithluminalAbreastcancertreatedattheBreastDiseaseCenter,PekingUniversityFirstHospitalfrom2008to2014.Follow-updataincluding5-yeardiseasefreesurvival(DFS),overallsurvival(OS)andotherclinic-pathologicaldatawerecollectedtoanalyzethedifferencesbetweenthetwostagingsubgroups.Results:Thisstudyincluded421patientswithluminalAbreastcancer(medianfollow-up,61months).The5-yearDFSandOSrateswere98.3%and99.3%,respectively.Significantdifferencesin5-yearDFSbutnotOSwereobservedbetweendifferentanatomicdiseasestages.Significantdifferenceswereobservedinboth5-yearDFSandOSbetweendifferentprognosticstages.Applicationoftheprognosticstagingsystemresultedinassignmentof175of421patients(41.6%)toadifferentgroupcomparedtotheiroriginalanatomicstages.Intotal,102of103patientswithanatomicstageIIAchangedtoprognosticstageIB,and24of52patientswithanatomicstageIIBchangedtoprognosticstageIB,while1changedtoprognosticstageIIIB.Twenty-twoof33patientswithanatomicstageIIIAweredown-stagedtoIIAwhenstagedbyprognosticstagingsystem,andtheother11patientsweredown-stagedtoIIB.TwopatientswithanatomicstageIIIBweredown-stagedtoIIIA.AmongsevenpatientswithanatomicstageIIICcancer,twoweredown-stagedtoIIIAandfourweredown-stagedtostageIIIB.Conclusions:The8theditionofAJCCprognosticstagingsystemisanimportantsupplementtothebreastcancerstagingsystem.Moreclinicaltrialsareneededtoproveitsabilitytoguideselectionofpropersystemictherapyandpredictprognosisofbreastcancer.

  • 标签: 乳腺癌 委员会 预后 系统 癌症 A型
  • 简介:Objective:ToinvestigatewhetherGli1expressionisimportantinrelapseafterradicaloperationofbreastcancer.Methods:Usingimmunohistochemistry,Gli1expressionwasanalyzedinhumanprimarybreastcancer(n=284)andparacanceroustissues(n=20),andalsoinlocallymphnodes(n=28)andmetastaticlymphnodes(n=28).Results:InitialanalysisofGli1expressioninasmallcohortof20breasttumorsandtheirparacanceroustissuesshowedatendencytowardsGli1overexpressioninbreastcancertissues(P<0.001).Further,Gli1expressionin284breastcancertissuesampleswasanalyzedandasignificantcorrelationwasfoundbetweenincreasedexpressionofnuclearGli1andunfavorablerecurrence-freesurvival(RFS)(P<0.05).ThenuclearexpressionofGli1inmetastaticlymphnodesfollowingrelapseafterradicaloperationwasmuchhigherthanthatinthelocallymphnodesofprimarycarcinoma(P<0.05).Mostinterestingly,theexpressionofGli1wasmuchhigherintheinterstitialtissuesoftherelapsedgroupthanofthenon-relapsedgroup(P<0.001).Conclusions:BreastcancershowsahighprevalenceofGli1expression,whichissignificantlycorrelatedwithaggressivefeaturesandunfavorableRFS.NuclearGli1overexpression,especiallyintheinterstitialtissues,signifiedearlyrelapseafterradicaloperationofbreastcancer.

  • 标签: 手术切除 乳腺癌 过度表达 复发 辅助治疗 早期
  • 简介:Cancercellsarewelldocumentedtorewiretheirmetabolismandenergyproductionnetworkstosupportandenablerapidproliferation,continuousgrowth,survivalinharshconditions,invasion,metastasis,andresistancetocancertreatments.SinceDr.OttoWarburg’sdiscoveryaboutalteredcancercellmetabolismin1930,thousandsofstudieshaveshedlightonvariousaspectsofcancermetabolismwithacommongoaltofindnewwaysforeffectivelyeliminatingtumorcellsbytargetingtheirenergymetabolism.Thisreviewhighlightstheimportanceofthemainfeaturesofcancermetabolism,summarizesrecentremarkableadvancesinthisfield,andpointsoutthepotentialstotranslatethesescientificfindingsintolife-savingdiagnosisandtherapiestohelpcancerpatients.

  • 标签: 物质代谢 癌症患者 重编程 抗肿瘤治疗 疗法 抗癌
  • 简介:Colorectalcancer(CRC)isthesecondmostcommoncancerinwomenandthethirdmostcommoninmenglobally.CRCarisesfromoneoracombinationofchromosomalinstability,CpGislandmethylatorphenotype,andmicrosatelliteinstability.Geneticinstabilityisusuallycausedbyaneuploidyandlossofheterozygosity.Mutationsinthetumorsuppressororcellcyclegenesmayalsoleadtocellulartransformation.Similarly,epigeneticand/orgeneticalterationsresultinginimpairedcellularpathways,suchasDNArepairmechanism,mayleadtomicrosatelliteinstabilityandmutatorphenotype.Non-codingRNAs,moreimportantlymicroRNAsandlongnon-codingRNAshavealsobeenimplicatedatvariousCRCstages.Understandingthespecificmechanismsoftumorigenesisandtheunderlyinggeneticandepigenetictraitsiscriticalincomprehendingthediseasephenotype.Thispaperreviewsthesemechanismsalongwiththerolesofvariousnon-codingRNAsinCRCs.

  • 标签: 致癌机制 染色体不稳定性 微卫星不稳定性 大肠癌 遗传不稳定性 肿瘤抑制基因
  • 简介:ChineseJournalofCancerResearch,aninternationalbiomedicaljournaleditedandpublishedquarterlyinEnglishbyChinaAnti-CancerAssociation(CACA),isacomprehensiveacademicjournal,aimingtoreflectprimarilythecreativeorinnovativeachievementsinallfieldsofcancerresea...

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  • 简介:InSeptember2013,theTranslationalAndrologyandUrology(TAU)launchedafocusissueon'ProstateCancer',whichwasguest-editedbyDr.Jer-TsongHsiehandDr.GaneshRajfromUniversityofTexasSouthwesternMedicalCenteratDallas,USA.Inthisfocusissue,Dr.RajandDr.Hsiehinvitedaninternationalexpertpanelofcliniciansandbasicscientiststooutlinecurrentchallengesofprostatecancertreatment

  • 标签: 前列腺癌 点对 得克萨斯大学 焦点问题 泌尿外科 达拉斯