抑癌基因p27编码蛋白与细胞周期蛋白d1在疣状胃炎及胃癌组织中表达及意义.pdf
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1、顾湘:抑癌基因p27编码蛋白与细胞周期蛋白DI在疣状胃炎及胃癌组织中的表达及意义 1抑癌基因p27编码蛋白与细胞周期蛋白D1在疣状胃炎及胃癌组织中的表达及意义研究生:顾湘导师:朱海杭教授中文摘要目的:疣状胃炎是一种具有特殊形态的慢性胃炎,其病因及发病机制尚未明确,病理学上存在一定比例的肠上皮化生和异型增生。研究提示疣状胃炎与胃癌可能存在相关性,但是疣状胃炎的癌变的分子机制尚不清楚。关于疣状胃炎的癌相关基因的研究报道较少,我们通过分析疣状胃炎的病理表现、检测p27蛋白及细胞周期蛋白cyclinDl在浅表性胃炎组织、疣状胃炎组织及胃癌组织中的表达,探讨疣状胃炎、胃癌之间的关系及其可能存在的癌变的分
2、子机制,为疣状胃炎及胃癌的预防与治疗提供更多的依据。方法:收集2012年1月2012年12月扬州大学临床医学院胃镜室及手术室符合研究要求的标本,包括慢性浅表性胃炎、未成熟型疣状胃炎、成熟型疣状胃炎、胃癌组织各40例。标本HE染色,显微镜下分析慢性浅表性胃炎及不同分型疣状胃炎的病理表现。采用免疫组织化学二步法检测组织标本中p27蛋白、cyclin D1的表达。Hp感染情况采用快速尿素酶法检测。数据统计采用SPSS 160及Excel2003软件。结果:1、未成熟型疣状胃炎、成熟型疣状胃炎两组肠上皮化生率(275、300)均高于慢性浅表性胃炎组(75)(尸005);成熟型疣状胃炎组低于慢性浅表性胃
3、炎组及未成熟型疣状胃炎组(P005)。组(333)(PO05)。结论:关巍。翩瑶白 Y241988帆7唧疣状胃炎;胃癌;病理;p27蛋白;cyclin D1Expression ot tumor suppressor gene p2encoding protein and一 一一 o 1cyclin D 1 in varioliform gastritis and gastric cancerObj ectiveMSCandidate:Gu XiangSupervisor:ProfZhu HaihangAB STRACTVarioliform gastritis iS a special ty
4、pe with a characteristic form of chronic gastritis。itSetiology and pathogenesis is not clearIn pathological category,there is a certain percentage ofvarioliform gastritis show intestinal metaplasia and dysplasia。Some studies have prompted thatthere may be a close relationship between varioliform gas
5、tritis and the development of gastriccancer,the molecular mechanism of carcinogenesis iS not clearThere iS only a feW studies aboutcancer-related genes of varioliform gastritis,we study the expression of p2protein and cyclinD l in varioliform gastritis and gastric carcinoma to investigate the relati
6、onship betweenvarioliforlTl gastritis and gastric cancer,to discuss its possible molecular mechanism ofcarcinogenesisand provide more evidence for the prevention and treatment of variolifornlgastritis and gastric cancerMethodsCollect Tissue samples met the research requirements in the gastroscope Ce
7、nter andoperating room form January 2012 to December 2012include 40 cases of chronic superficialgastritis,40 cases of immature varioliform gastritis,40 cases of mature varioliform gastritis,40cases of gastric carcinomaUse the HE staining,analysis the pathologicalmanife-stations ofchronic superficial
8、 gastritis and different type of varioliforill gastritis by the microscopeTheimmunohistochemistry 2-step detection system was used to detect the expression of p27 proteinand cyclin D 1Urea enzyme method was used to detect the infection of Hprnle data wasanalysed by SPSS 160 and Excel 2003Result1The
9、rate of intestinal metaplasia of Immature varioliform gastritismature verrucosagastritis(275,30O)were higher than chronic superficial gastritis(75)(尸005)2The positive rates of p27 protein expression in chronic superficial gastritisimmaturevariolilbrm gastritis,mature verrucosa gastritis,gastritis ve
10、rrucosa(total),gastric cancer were850,775,525,65O,45OThe positive rate of p27 protein expression in immaturevariolifonn gastritis was higher than mature verrucosa gastritis and gastric cancer fPO05)The positive rate of p27 expression in mature verrucosa gastritiswas lower than chronic superficial ga
11、stritis and immature verrucosa gastritiswhile there WaS no扬州人学硕士学位论文 4significant difference between mature verrucosa gastritis and gastric cancer(YO05)3The positive rates of cyclin D 1 expression in chronic superficial gastritis,immaturevarioliforrn gastritis,mature verrucosa gastritis,gastritis ve
12、rrucosa(total),gastric cancer were125,400,425,4125,675The positive rate of cyclin D1 expression in immaturevarioliform gastritis and mature verrucosa gastritis were higher than chronic superficial gastritis(P005)5The Hp infection rates in chronic superficial gastritisimmature V撕oliform gastritismatu
13、re verrucosa gastritis group were 12。5,350,and 400The positive rate ofp27 proteinexpression in Hp positive varioliform gastritis(600)had no difference with Hp negativevarioliform gastritis(68O)and the positive rate of cyclin D1 expression(533,340)wasthe same result(P005)6The positive rate of p27 pro
14、tein expression in intestinal metaplasia positive varioliforrngastritis group(43。5)was lower than the intestinal metaplasia negative group(736)p005)ConclusionsVarioliform gastritis have the potential of cancerization,and mature varioliform gastritis aremore likely to have carcinomatous changep27 and
15、 cyclin D 1 may be involved in the process ofthe occurrence,evolution and cancerization of varioliform gastritisVarioliform gastritis patientsshould have active treatment and close followup,especially for those patients with intestinalmetaplasia or dysplasiaKev wordsvarioliform gastritis;gastric can
16、cer;Pathology;p27;cyclin D1顾湘:抑癌基冈p27编码蛋白与细胞周期蛋白Dl在疣状胃炎及胃癌组织中的表达及意义 5目录中文摘要1英文摘要3符号说明6前言8第一部分疣状胃炎的病理分析101材料和方法102 结果1221炎症程度1222萎缩、肠上皮化生及异型增生133讨论15第二部分p27蛋白、cyclin D1在疣状胃炎及胃癌组织中的表达研究171材料和方法172结果1921 p27蛋白的表达1922 cyclin D1的表达2223疣状胃炎患者年龄、性别与p27蛋白、cyclin D1表达的相关性2524疣状胃炎组中Hp感染与p27蛋白、cyclinDl表达的相关性25
17、25疣状胃炎组中肠上皮化生与p27蛋白、cyclin D1表达的相关性:2626疣状胃炎组中异型增生与p27蛋白、cyclinDl表达的相关性2727疣状胃炎及胃癌中p27蛋白、cyclinDl表达的相关性分析303讨论-30结论33参考文献34综述38致i勇45攻读学位期间完成的论文46扬州大学学位论文原创性声明和版权使用授权书47扬少I1大学硕士学位论文缩写VGHpcyclinCDKCDKICAKPEBPTXNDCCipKipSerLeuCvsThrRbDNAHEHRPDABH202PBSNaClNaH2P04符号说明英文全称varioliform gastritisHelicobacte
18、r pyloricyclincyclin dependent kinasescyclin dependent kinase inhibitorscyclin dependent ldnases-activatingkinasephosphatidylethanolaminebinding proteinthioredoxin domaincontaining proteincyclin dependent kinases interactingproteincyclin dependent kinase inhibitionproteinserineleucinecysteinethreoni
19、neretinoblastomadeoxyribonuclieic acidhematoxylin and eosinhorseradish peroxidasediaminobenzidineperoxidephosphate buffered salinesodium chloridesodium phosphate monobasic中文全称疣状胃炎幽门螺杆菌细胞周期蛋白细胞周期蛋白依赖激酶细胞周期蛋白依赖激酶抑制剂细胞周期蛋白依赖激酶激活性激酶磷l眦Jljl厶+1。:1合蛋白硫氧还蛋白域蛋白细胞周期蛋白依赖激酶影响蛋白细胞周期蛋白激酶抑制蛋白丝氨酸亮氨酸半胱氨酸苏氨酸视蛋白网膜母细胞瘤
20、脱氧核糖核酸苏木精伊红辣根过氧化物酶二氨基联苯胺过氧化氢磷酸盐缓冲液氯化钠磷酸二氢钠顾湘:抑癌基因p27编码蛋白与细胞周期蛋白D1在疣状胃炎及胃癌组织中的表达及意义 7Na2HP04SPSSP,rVSUmmlLmggSmlnhdisodium hydrogen phosphateStatistical package for the social sciencepropabilitycorrelationchisquareVersUScemidegreemicrometermilliterlitermilligramgralTlsecondminutehour磷酸氢二钠社会科学统计套装软体概率
21、相关系数卡方比摄氏度微米毫升升毫克克秒分钟小时扬州大学硕士学位论文日|J吾疣状胃炎(varioliform gastritis,VG)是一种具有特殊形态的慢性胃炎,又称慢性糜烂性胃炎、痘疹状胃炎,国内外疣状胃炎的发病率报道不一,其病因及发病机制尚未明确。疣状胃炎的临床表现缺乏特异性,Hp的感染率较高,内镜特征与普通的慢性胃炎存在明显区别。疣状胃炎典型的内镜表现为胃黏膜局部隆起伴中央脐样凹陷,凹陷表面常有糜烂,隆起性病变。般为多发性,呈圆形、椭圆形或不规则形,直径510mm,隆起高度1-3ram,呈簇状或链状出现在胃窦部,也可出现在胃体及胃底部。疣状胃炎在病理学上存在一定比例的肠上皮化生和异型增
22、生。有研究提示疣状胃炎和胃癌的存在密切关系,并有临床研究观察到疣状胃炎可发生癌变。在第十届世界胃肠病大会上,疣状胃炎被列为有高度癌变倾向的疾病Il J。但疣状胃炎的癌变的分子机制尚不清楚,国内外关于疣状胃炎的分子生物学研究非常有限,针对癌相关基因改变的研究报道则更少。有研究提示疣状胃炎具有癌变的倾向,而胃癌的发病率位居世界第四位,病死率位居世界第二位。每年被诊断为胃癌的患者大约有798万人,约占总的癌症病例的990;每年约有628万人死于这种疾病,占癌症死亡人数的121。在东亚国家,包括中国,胃癌的发病率和死亡率在各种癌症中排名第一,并在过去的二十年中迅速增长。胃癌的发生是一个多因素、多步骤的
23、复杂逐步发展过程,癌基因的激活或突变、抑癌基因的失活或抑制、DNA微卫星的失稳及生长因子的表达失调可打破胃上皮细胞的增殖及凋亡平衡,参与癌变的过程。但是胃癌的癌变过程并没有完全明白,其发生及发展机制并不十分清楚【2J。p27基因是一种抑癌基因,定位于人体12号染色体12p13处,含有2个外显子及2个内含子【3l。其表达产物p27蛋白是种细胞周期蛋白依赖激酶抑制剂(cyclin dependentkinase inhibitors CDKI),含198个氨基酸残基,相对分子量约27000,C端包含核定位信号,为分开的氨基酸双支,N端的晶体结构为其功能区域,由69个氨基酸组成,含有两个Ser磷酸化
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