CIP2A在喉癌组织中的表达及其临床意义莫海兰,李洁,杨智玲,李兵(400016重庆,重庆医科大学附属第一医院耳鼻喉科)[摘要]目的探讨蛋白磷酸酶2A的癌性抑制因子(cancerousinhibitorofproteinphosphatase2A,CIP2A)在喉癌屮的表达及其与临床病理特征的关系和对预后的影响。方法采川免疫纽•化方法检测61例喉癌标木(包括40例对应正常癌旁组织),9例不典型增生和8例喉乳头状瘤屮CIP2A的表达,结合临床病理资料进行分析。结果CIP2A在正常癌旁组织屮低表达或不表达,在喉鳞状细胞癌屮的表达比喉乳头状瘤和不典型增生屮明显增高(PvO.05)。61例喉癌屮,CIP2A阴性表达11例(18%),弱阳性13例(21.3%),阳性25例(40.9%),强阳性12例(19.6%),其阳性程度与喉癌的年龄、性别、吸烟和嗜酒无关(Q0.05),而与肿瘤的分级分期、淋巴转移、组织分化程度和预后相关(尺0.05)。喉癌屮CIP2A表达越高,其预后越羌,高表达组总生存率和无瘤生存率低于低表达纽.(X0.05)o结论CIP2A参与喉癌的发生发展过程,对评估喉癌预麻有重要作用,可能成为喉癌治疗的有效分了靶标之一。[关键词]喉鳞状细胞癌;CTP2A;免疫组织化学;生存分析[屮图法分类号]R739.6[文献标识码]AExpressionofCIP2AinlaryngealsquamouscellcarcinomaanditsclinicalsignificanceMoHailan,Li激e,YangZhilin,LiBing(DepartmentofOtolaryngology,TheFirstAffiliatedHospitalofChongqingMedicalUniversity,Chongqing400016,PRChina)[Abstract]ObjectiveToexploretheexpressionofCIP2Ainlaryngealsquamouscellcarcinoma,discusstherelationshipbetweenCIP2Aandclinicopathologiccharacteristics,andpredictitsprognosisrole.MethodsExpressionofCIP2Awasexaminedwithimmunohistochemistryin61la「yngealsquamouscellcarcinoma(with40adjacentno「maltissue),9atypicalhyperplasiaand8laryngealpapilloma.;TherelationshipbetweenCIP2Alevelandclinicalpathologicalcharacteristicswasanalyzed;theinfluenceofitsexpressiononprognosiswasalsoanalyzed.ResultsTheexpressionofCIP2Ainnormaltissuewasnegativeorweaklypositive•Itsexpressionwassignificantlyhigherinlaryngealsquamouscellcarcinomathanthatinatypicalhyperplasiaandlaryngealpapilloma(P<0.05).CIP2Aimmunoreactivity,testedin61laryngealcancers,wasnegativein11(18%)、weaklypositivein13(21.3%),moderatelypositivein25(40.9%),andstrongpositivein12(19.6%)cases・ThehighpositiveofCIP2Awasnotrelatedwithage,sex,smokingandalcoholassumption.Whereas,thereweresignificantcorrelationsbetweenCIP2AandTstage,clinicalstage,lymphnodemetastasis,andhistologicaldifferentiation(P<0.05).HighCIP2Aexpressionpredictedpoorsurvival,withshorteroverall-survivalanddisease-freesurvival.ConclusionOverexpressionofCIP2AmaybeinvoIvedinthedevelopmentandprogressionoflaryngealsquamouscellcarcinoma.Itmayserveasausefulprognosticmarkerandtherapeutictargetforlaryngealsquamouscellcarcinoma・[Keywordsllaryngealsquamouscellcarcinoma;CIP2A;immunohistochemistry;survivalanalysisCorrespondingauthor:LiBing,tel:86-23-68485785,email:dclibing@sina通讯作者:李兵,电话:023-68485785,Email:dclibin2@sina---本文于网络,仅供参考,勿照抄,如有侵权请联系删除---喉癌是耳鼻咽喉科最常见的恶性肿瘤在头颈部上皮的原发恶性肿瘤中排第2位,近年来其发病率具有明显增高趋势⑴。随着诊断技术和治方式的改善,喉癌患者的生活质量有所改善,但其五年生存率仍未得到明显提高。因此需要通过寻找喉癌的冇效治疗靶向标志物来改善患者的预示。CIP2A是新发现的一种癌蛋白。研究发现CIP2A可通过抑制蛋片磷酸酶2A(proteinphosphatase2A,PP2A)对c・Myc的去磷酸化作用,稳定癌蛋白c-Myc结构,并在细胞转化及肿瘤生长过稈中发挥着重要作用叫已有研究表明CIP2A在人类头颈肿瘤标木中明显高表达,但CIP2AZ在喉癌中的表达及其与喉癌预ViZM的关系仍不清楚...