转录调节因子Ets-1在卵巢上皮性癌中表达及其意义

[目的]探讨转录调节因子Ets鄄1在卵巢上皮性癌中的表达及其与肿瘤血管生成的相关关系。[方法]利用原位杂交和免疫组化技术观察58例卵巢上皮性癌中Ets鄄1表达特点与肿瘤生物学行为的关系,同时与血管内皮生长因子(VEGF)和微血管密度(MVD)进行相关分析。[结果]Ets鄄1mRNA和蛋白主要分布在血管内皮细胞上,阳性率分别为81.7%(47/58)和76.4%(44/58),其表达与腹水及微血管密度相关(P<0.01)。Ets鄄1mRNA与VEGFmRNA间相关系数为0.9072。[结论]Ets鄄1可作为判断卵巢上皮性癌生物学行为的观察指标。     

VEGF及其受体KDR在宫颈癌的联合表达与局部肿瘤血管生成的关系

目的:探讨血管内皮生长因子及其受体KDR在早期宫颈癌的表达及其对宫颈癌肿瘤血管生成的作用。方法:采用免疫组织化学SP法检测18例宫颈上皮内瘤样病变(cervicalintraepithelialneoplasm,CIN)、75例早期宫颈癌(invasivecarcinomaofcervix,ICC)和15例正常宫颈上皮(normalcervicalepithelium,NCE)中VEGF和KDR的表达情况,并检测其中微血管密度(CD34标记)。结果:在ICC中,VEGF和KDR主要表达于癌细胞膜和(或)细胞浆;而CD34主要表达于癌巢间质血管内皮细胞。从NCE到CIN再到ICC,VEGF与KDR的阳性表达率以及MVD均显著升高(P<0.01)。在ICC中,VEGF、KDR阳性表达者其MVD分别显著高于VEGF、KDR阴性表达者(P<0.05)。VEGF在ICC的表达与KDR显著正相关(r=0.56,P<0.01),并且两者均与MVD显著正相关(前者r=0.60,P<0.01;后者r=0.33,P<0.01)。VEGF与KDR均阳性表达者,其微血管密度显著高于两者均阴性表达者(P<0.01)。结论:VEGF及其受体KDR表达在宫颈癌肿瘤血管生成中起上调作用,两者均过度表达,肿瘤血管生成显著增加。检测VEGF及其受体KDR的联合表达对进一步了解宫颈癌血管生成情况以及寻找抗肿瘤血管生成治疗新靶点有一定价值。     

VEGF及其受体KDF在宫颈癌的联合表达与局部肿瘤血管生成的关系

目的:探讨血管内皮生长因子及其受体KDR在早期宫颈癌的表达及其对宫颈癌肿瘤血管生成的作用.方法:采用免疫组织化学SP法检测18例宫颈上皮内瘤样病变(cervical intraepithelial neoplasm,CIN)、75例早期宫颈癌(invasive carcinoma of cervix,ICC)和15例正常宫颈上皮(normal cervical epithelium,NCE)中VEGF和KDR的表达情况,并检测其中微血管密度(CD34标记).结果:在ICC中,VEGF和KDR主要表达于癌细胞膜和(或)细胞浆;而CD34主要表达于癌巢间质血管内皮细胞.从NCE到CIN再到ICC,VEGF与KDR的阳性表达率以及MVD均显著升高(P<0.01).在ICC中,VEGF、KDR阳性表达者其MVD分别显著高于VEGF、KDR阴性表达者(P＜0.05).VEGF在ICC的表达与KDR显著正相关(r=0.56,P<0.01),并且两者均与MVD显著正相关(前者r=0.60,P<0.01;后者r=0.33,P<0.01).VEGF与KDR均阳性表达者,其微血管密度显著高于两者均阴性表达者(P<0.01).结论:VEGF及其受体KDR表达在宫颈癌肿瘤血管生成中起上调作用,两者均过度表达,肿瘤血管生成显著增加.检测VEGF及其受体KDR的联合表达对进一步了解宫颈癌血管生成情况以及寻找抗肿瘤血管生成治疗新靶点有一定价值.     

Ets-1、VEGF在乳腺浸润性导管癌组织的表达及其临床意义

目的:探讨Ets-1和VEGF在乳腺浸润性导管癌( invasive ductal carcinoma,IDC)组织中的表达规律,分析其与临床病理特征的关系.方法:选择临床确诊的40例乳腺浸润性导管癌患者手术切除癌组织和癌旁组织标本,通过免疫组织化学和RT-PCR方法检测Ets-1和VEGF蛋白和mRNA的表达.结果:(1)Ets-1和VEGF蛋白在乳腺IDC组织中高表达,明显高于癌旁乳腺组织(P＜0.01);癌组织中Ets-1蛋白表达高于VEGF,且两者呈正相关(r为0.8827,P＜0.05);Ets-1和VEGF蛋白表达与年龄、肿瘤大小无关,与临床分期、淋巴结转移密切相关(P<0.05).(2)Ets-1 mRNA、VEGF mRNA在乳腺IDC组织的表达明显高于癌旁乳腺组织(P＜0.01);Ets-1mRNA水平明显高于VEGF mRNA (P＜0.01),且两者正相关(r＝0.984,P＜0.01);Ets-1 mRNA、VEGF mRNA表达与年龄、肿瘤大小无关,与临床分期、淋巴结转移密切相关(P<0.05).结论:乳腺浸润性导管癌组织中Ets-1和VEGF在mRNA和蛋白水平均高表达,两者表达间均呈正相关;两者表达均与肿瘤临床分期和淋巴结转移相关.     

促血管生成因子及受体在肝癌生长中的作用

目的　探讨不同的促血管生成分子及受体在肝癌血管生成中的作用。方法　收集临床切除的肝癌标本 15例 ,应用RP PCR和Westernblot方法检测肝癌标本中不同部位的血管内皮生长因子 (VEGF)及其受体 (KDR)和血管生成素 (Ang1、Ang2 )及其受体 (Tie2 )的表达。以免疫组织化学检测内皮细胞特异性的标志分子CD34,并且分析血管密度与促血管生成因子表达的关系。结果　在肝癌组织中 ,VEGF和Ang2的表达水平与其他部位比较 ,差异有显著性 (P <0 .0 1) ;血管的分布以癌组织及癌旁组织中密度最高。KDR、Ang1和Tie2的表达虽然在各部位间差异无显著性 ,但在癌组织和癌旁组织中的表达存在不同程度的升高。结论　在肝癌的生长过程中 ,VEGF/KDR和Angiopietins/Tie2两条通路均有不同程度的活化 ,但不协调 ,使得肝癌组织中的血管处于不成熟状态 ,这为进一步开发抑制血管生成的抗肿瘤生长药物提供了科学依据     

COX-2、VEGF及MMP-9蛋白在上皮性卵巢癌组织中的表达及意义

目的 探讨环氧化酶-2(COX-2)、血管内皮生长因子(VEGF)及基质金属蛋白酶-9(MMP-9)在上皮性卵巢癌组织中的表达及意义.方法 采用免疫组化S-P法检测COX-2蛋白在65例上皮性卵巢癌、18例交界性卵巢肿瘤、18例良性上皮性卵巢肿瘤及9例正常卵巢组织中的表达;采用免疫组化S-P法检测VEGF、MMP-9蛋白在65例上皮性卵巢癌组织中的表达;分析COX-2蛋白与VEGF、MMP-9蛋白的表达是否存在相关性.结果 COX-2蛋白在上皮性卵巢癌及交界性卵巢肿瘤组织中的表达显著高于良性卵巢肿瘤及正常卵巢组织(P＜0.05).COX-2蛋白的过表达与上皮性卵巢癌组织中VEGF和MMP-9蛋白的表达均呈正相关(r=0.310、0.385,P＜0.05).结论 COX-2在上皮性卵巢癌及交界性卵巢肿瘤组织中的表达明显增强;COX-2可能参与上皮性卵巢癌的肿瘤血管生成及癌细胞侵袭的过程,在上皮性卵巢癌发生发展过程中起一定作用.     

肝细胞癌组织中VEGF、MMP-2和MVD的表达及其相关性研究

[目的]研究肝细胞癌(HCC)组织中血管内皮生长因子(VEGF)及基质金属蛋白酶-2(MMP-2)蛋白的表达及其临床意义,并探讨其与血管生成的关系.[方法]采用免疫组化法检测60例肝癌组织及癌旁肝组织中VEGF及MMP-2的表达,用CD34标记免疫组化法检测微血管密度(MVD).[结果]VEGF及MMP-2在癌组织中的阳性率分别为63.33%和60.00%,而在癌旁组织中的阳性率分别为33.33%和26.67%,癌组织与癌旁组织比较差异有显著性(P＜0.01).癌组织的MVD为54.92±8.55,癌旁组织的MVD为21.36±6.63,两者差异有显著性(P＜0.01).VEGF在人肝癌组织中的表达与术后复发、肝外转移、临床分期、门静脉癌栓、肿瘤直径相关.MMP-2在人肝癌组织中的表达与临床分期、门静脉癌栓、肝外转移及术后复发相关.在癌组织中MVD与VEGF及MMP-2的表达呈正相关,VEGF与MMP-2的表达亦呈正相关.[结论]HCC中VEGF及MMP-2的高表达与肿瘤血管形成有关,在HCC的发生、发展及术后复发过程中起重要作用.     

卵巢浆液性囊腺癌组织缺氧诱导因子1α的表达及其与临床病理学相关性的研究

目的:探讨缺氧诱导因子-1α(hypoxia-inducible factor-1α, HIF-1α)与卵巢浆液性癌的临床病理参数、肿瘤血管生成及预后评价的关系.方法:用免疫组织化学方法检测HIF-1α、血管内皮生长因子(vascular endothelial growth factor ,VEGF)、碱性成纤维细胞生长因子(basic fibroblast growth factor, bFGF)和CD34蛋白在52例人卵巢浆液性癌组织中的表达,分析HIF-1α与VEGF、bFGF、微血管密度(microvessel density,MVD)及临床病理参数的关系.结果:HIF-1α蛋白在卵巢浆液性囊腺癌和卵巢交界性浆液性囊腺瘤组织中的高表达率明显高于正常卵巢和卵巢浆液性囊腺瘤组织,P分别为0.000 5和0.000 8;低分化、Ⅲ Ⅳ期和腹水阳性患者HIF-1α蛋白的高表达率明显高于高中分化、Ⅰ Ⅱ期和腹水阴性者,P分别为0.033、0.006和0.003;HIF-1α蛋白表达与年龄无关(P=0.437),与VEGF、bFGF及MVD具有明显的正相关,P分别为0.000 1、0.000 3和0.000 7.结论:HIF-1α与卵巢浆液性囊腺癌血管生成密切相关,在卵巢浆液性囊腺癌的发生发展中起重要作用.     

基质金属蛋白酶9表达与胃癌血管生成及转移的关系

[目的]探讨基质金属蛋白酶9(MMP-9)对胃癌血管生成和转移的作用及意义.[方法]应用SP法,对63例胃癌手术切除标本进行抗人MMP-9单克隆抗体和抗因子Ⅷ相关抗原抗体(FⅧAg)免疫组织化学染色,检测和分析癌区组织、癌旁区组织、手术切缘区正常组织各区域MMP-9表达和MVD.[结果]癌区组织MMP-9高表达率(59%)显著高于癌旁区组织(22%,P＜0.01),癌旁区组织MMP-9低表达率(49%)明显高于切缘区正常组织(21%,P＜0.01);癌区的MVD表达显著高于癌旁区及正常区组织表达(P＜0.01).MMP-9的表达情况与肿瘤血管形成的程度显著相关,无论在癌区、癌旁区组织MMP-9高表达的MVD值明显高于MMP-9低表达者(P＜0.05).淋巴结转移、肝转移的癌区组织MMP-9高表达及其MVD显著高于无相应转移者.[结论] MMP-9在胃癌的血管形成中起重要作用,其可通过促进胃癌血管形成而影响胃癌的转移.     

SABC-DS法检测肺癌中VEGF-KDR及其对肿瘤血管形成的影响

目的 肿瘤血管生成是肿瘤细胞生长、进展和转移的基本步骤。探讨肺癌肿瘤血管形成中的VEGF-KDR途径，为肺癌的治疗提供理论依据。方法 实验组为106例肺癌石蜡包埋标本，对照组为5例正常肺组织。应用SABC-DS双标免疫组织化学染色方法，检测两种与肿瘤血管形成和间质状态有关的调控因子即VEGF(血管内皮生长因子)和Flk-1／KDR(VEGF受体-2)的蛋白表达，采用图像分析技术检测MVD(微血管密度)，分析它们与临床病理学参数的差异和关系。采用SPSS(Ver8．0)统计软件包进行数据处理。结果 肺癌中MVD值与VEGF蛋白表达有显著性差异。MVD分级与VEGF蛋白表达间存在正相关。MVD值与Flk-I／KDR蛋白表达有显著性差异。MVD分级与Flk-I／KDR蛋白表达间存在正相关。结论 VEGF和受体Flk-I／KDR的结合促进微血管形成，应用SABC-DS法检测VEGF和Flk-I／KDR可预测肿瘤血管新生和肺癌血道转移。     

VEGF、CD31及MVD在卵巢上皮癌中临床意义

[目的]评价VEGF、CD31和MVD在卵巢癌中的表达及临床意义。[方法]卵巢上皮癌40例及正常卵巢组织20例标本采用免疫组织化学方法检测VEGF和CD31的表达，并计数MVD。[结果]卵巢癌中VEGF阳性表达率为67．5％，明显高于对照组的15．0％。有淋巴结转移者的VEGF和MVD明显高于无转移者（P〈0．05）：Ⅲ～Ⅳ期病例的VEGF和MVD也明显高于Ⅰ～Ⅱ病例（P〈0．05）。[结论]VEGF、CD31在卵巢癌的发生发展中起着重要的作用。MVD与肿瘤的浸润和转移相关。     

Coordinated expression of integrin subunits,matrix metalloproteinases (MMP), angiogenic genes and Ets transcription factors in advanced-stage ovarian carcinoma: a possible activation pathway?

The events that mediate tumor progression in ovarian carcinoma are poorly understood to date. This review summarizes our results studying metastasis-associated molecules in advanced-stage ovarian carcinomas, details the co-expression of mRNA of these genes, and discusses their prognostic role. Fifty-five primary and metastatic FIGO stage III-IV ovarian carcinomas were analyzed for the expression of alpha v and beta1 integrin subunits, the matrix metalloproteinases MMP-2, MMP-9, and MT1-MMP, the MMP inhibitor TIMP-2, vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), interleukin-8 (IL-8), PEA3 and Ets-1 using mRNA in situ hybridization. Tumor and adjacent stromal cell expression was scored. The association between integrin subunit expression and the expression of MMP, TIMP-2, angiogenic genes, PEA3 and Ets-1 was statistically analyzed. Alpha v integrin subunit mRNA expression in carcinoma cells showed significant association with that of MMP-2 and IL-8 in this cellular compartment, while the presence of beta1 integrin subunit mRNA showed similar association with that of PEA3, Ets-1, IL-8, bFGF and MMP-2. Expression of beta1 integrin subunit mRNA in stromal cells was associated with that of TIMP-2 and Ets-1 in this compartment. In addition, significant intercellular associations were found between alpha v integrin subunit mRNA expression in carcinoma cells and stromal cell expression of Ets-1, as well as between stromal cell expression of alpha v integrin subunit and labeling for IL-8 in carcinoma cells. The presence of beta1 integrin subunit mRNA in carcinoma cells showed a significant association with that of Ets-1, IL-8 and bFGF in stromal cells, while the presence of beta1 integrin subunit mRNA in stromal cells was associated with tumor PEA3 mRNA expression. To the best of our knowledge, this is the first evidence for coordinated autocrine and paracrine expression of members of these four families of metastasis-associated genes in human cancer. The results of this analysis support experimental data regarding cross-talk between carcinoma cells and peritumoral fibroblasts. They also suggest the existence of a putative activation sequence of metastatic genes, involving the beta1 (and possibly alpha v) integrin subunits, IL-8, PEA3, Ets-1 and MMP in ovarian carcinoma.     

血管内皮生长因子及其受体在大肠癌中的表达

研究血管内皮生长因子及其受体大肠癌中的表达及其临床意义。「方法」应用免疫组化ＳＰ法检测１５５例大肠癌标本ＶＥＧＦ及ＫＤＲ蛋白的表达。分析ＶＥＧＦ和ＫＤＲ与临床病理因素,微血管计数及预后的关系。「结果」ＶＥＧＦ和ＫＤＲ的表达与大肠癌浸润深度、淋巴结转移、血管侵犯、脏脏转移、Ｄｕｋｅｓ’分期密相关,而与组织学分型和肿瘤大小无关。ＶＥＧＦ和ＫＤＲ的表达密切相关。ＶＥＧＦ和ＫＤＲ表达阳性者ＭＶＣ显著高于阴     

库肯勃瘤中CD44v6﹑VEGF﹑MMP-2﹑MMP-9的表达及相关性研究

目的:探讨CD44v6、VEGF、MMP-2、MMP-9在库肯勃瘤及卵巢原发上皮癌中的表达及相关性。方法:应用免疫组化SP法检测CD44v6、VEGF、MMP-2、MMP-9在20例正常卵巢组织、38例库肯勃瘤、45例卵巢原发上皮癌中的表达情况。结果:CD44v6、VEGF在卵巢原发上皮癌和库肯勃瘤组织中的表达显著高于正常卵巢组织(P<0.05);MMP-2﹑MMP-9在正常卵巢组织中表达缺如;CD44v6、VEGF、MMP-2、MMP-9在库肯勃中阳性表达率明显高于卵巢原发上皮癌(P<0.05)。CD44v6、VEGF、MMP-2、MMP-9在卵巢原发上皮性癌、库肯勃瘤中,任意两指标阳性表达均有正相关性(P<0.05)。结论:CD44v6、VEGF、MMP-2、MMP-9均参与卵巢癌、胃癌、库肯勃瘤的发生、发展及演进过程,并可为卵巢上皮癌、胃癌及库肯勃瘤的鉴别诊断提供一定依据。     

Relationship between Co-expression of Vascular Endothelial Growth Factor and its Receptor, Kinase Insert Domain Containing Receptor and Tumor Angiogenesis in Invasive Carcinoma of the Cervix

Objective The aim of the present study was to determine the expression of vascular endothelial growth factor (VEGF) and its receptor, kinase insert domain containing receptor (KDR), and their significance in regulating tumor angiogenesis in the early stages of cervical cancer. Methods Using the immunohistochemical SP method, the expression of VEGF and KDR was determined in the cancer cells. In addition, the microvessel density (MVD), labeled by CD34 in the tumor stroma, was examined in 18 cases of cervical intraepithelial neoplasms (CIN), 75 cases of early invasive cervix carcinomas (ICC) and 15 specimens of normal cervical epithelium (NCE). Results In ICC cases, VEGF and KDR were mainly expressed in the cellular membrane and/or cytoplasm of tumor cells, while expression of CD34 was found mainly in the vascular epithelial cells of the tumor stroma. The positive expression rate of VEGF and KDR, and the MVD increased remarkably from NCE through CIN to ICC (P< 0.01). For the ICC group, in the patients with positive expression of VEGF and KDR, the MVD was significantly higher than those with negative expression of VEGF and KDR (P<0.05). Expression of VEGF in ICC was positively related to KDR expression (r=0.56,P<0.01 ). The MVD was also positively related to both the expression of VEGF (r=0.60,P<0.01), and KDR (r=0.33,P<0.01). In the cases with both positive expression of VEGF and KDR, the MVD was significantly higher than those in which there was negative expression of both(P<0.01). Conclusion Expression of VEGF and its receptor KDR plays a key role in up-regulating tumor angiogenesis in cervical carcinoma. Co-overexpression of VEGF and KDR results in rapid tumor vasculogenesis. Detection of co-expression of VEGF and KDR may be of value in further understanding tumor angiogenesis and in searching for new targets for anti-angiogenesis therapy in invasive carcinoma of the cervix. This work was supported by the Department of Education of Fujian Province (No. 01B017).     

VEGF and its receptors (flt-1 and KDR/flk-1) as prognostic indicators in endometrial carcinoma.

Vascular endothelial growth factor (VEGF) is associated with increased angiogenesis and aggressive tumour growth. We investigated the expression and clinical significance of VEGF and its receptors, flt-1 and KDR/flk-1, in patients with uterine endometrial carcinoma. The series consisted of 115 endometrioid endometrial adenocarcinoma patients with FIGO stage I-IV. Additionally, samples from 3 patients with adenoacanthoma and 12 patients with poor prognostic variants of endometrial carcinoma were examined. Immunohistochemical assessment was classified as negative or positive based on staining intensity. The median follow-up time of patients with endometrioid endometrial adenocarcinoma was 87 months. In endometrioid endometrial carcinomas, the positive immunostaining rate was 39% for VEGF, 65% for flt-1 and 68% for KDR/flk-1. There was a significant correlation between VEGF and both its receptors. Furthermore, this receptor expression was correlated between the two types of receptors. VEGF-, flt-1- and KDR/flk-1-positive immunostainings were not related to poor prognosis. We conclude that VEGF, flt-1 and KDR/flk-1 expressions are not useful prognostic markers for overall survival in patients with endometrioid endometrial carcinoma.