膀胱移行细胞癌中survivin基因和血管内皮生长因子的表达和意义

目的:探讨survivin基因和血管内皮生长因子(vascular endothelial growth factor,VEGF)在膀胱移行细胞癌中的表达和意义.方法:用免疫组化二步法检测58例膀胱移行细胞癌组织及20例正常膀胱粘膜组织中VEGF和survivin的表达.结果:20例正常膀胱粘膜组织中VEGF、survivin表达均为阴性;survivin、VEGF在膀胱移行细胞癌阳性表达分别为33例(56.9%)、30例(51.7%).肿瘤不同分级中随恶性程度的增高,表达增高,I级与Ⅲ级比较,差异有显著性意义(P＜0.05).不同临床分期中随分期的增高,表达增高,Tis-T1与T2-T4比较, 差异有显著性意义(P＜0.05).survivin、VEGF在膀胱移行细胞癌表达呈正相关 (r=0.385,P＜0.01).结论:VEGF和survivin在膀胱移行细胞癌的发生、发展过程中起着重要的作用.survivin基因可能参与了肿瘤血管的形成.     

PCNA及bcl-2基因在膀胱移行细胞癌组织中的表达及其意义

目的：探讨PCNA和bcl-2基因在膀胱癌组织中的表达及其预后意义，了解肿瘤增殖与凋亡的特点，揭示细胞凋亡和增殖在膀胱癌发生发展中的作用。方法：采用免疫组织化学LSAB法，对78例膀胱移行细胞癌组织进行PCNA和bcl-2表达的检测。结果：在膀胱癌中，PCNA主要呈胞核表达，bcl-2呈胞质表达，PCNA和bcl-2染色阳性率分别为35．9％和56．4％；PCNA表达与膀胱移行细胞癌组织分级、预后呈正相关(P=0．01，P=0．0386)，bcl-2亦与肿瘤分级、预后呈高度正相关(P=0．0002，P=0．0116)；PCNA和bcl-2表达无明显相关(P=0．2327)。结论：PCNA和bcl-2参与膀胱癌的恶性转化、侵袭及进展的过程；检测PCNA和bcl-2有助于判断膀胱肿瘤恶性分化程度，并且二者可以作为预后的评价指标。     

Matriptase和HAI-1在膀胱移行细胞癌中的表达及其意义

目的 检测 Matriptase 及HAI-1在膀胱移行细胞癌(BTCC)中的表达,探讨与BTCC临床病理参数间的关系及其临床意义.方法 在同一组织标本两个石蜡切片中应用免疫组化技术检测Matriptase及HAI-1在BTCC及正常膀胱组织中的表达,并结合临床病理资料分析.结果 Matriptase及HAI-1在BTCC及正常膀胱组织中均有表达;两者在BTCC中的表达阳性率均明显低于正常膀胱组织,组间差异有统计学意义(P<0.05);HAI-1表达与肿瘤病理分级、临床分期呈负相关(相关系数r分别为-0.634,P<0.001;-0.521,P<0.001).Matriptase表达随病理分级升高而降低,中、低分化组明显低于高分化组,差异有统计学意义(P<0.05);在不同临床分期组间差异无统计学意义(P>0.05).Matriptase和HAI-1在正常膀胱组织中表达相关系数r<0.772(P<0.001);在BTCC中r<0.546(P<0.001).结论 Matriptase和HAI-1在BTCC中表达降低,其异常表达在BTCC的发生发展过程中可能具有重要作用,HAI-1可作为判断BTCC恶性程度及预后的新型生物学标记,Matriptase在BTCC中的表达与促分化有关,可能是一种分化程度的指标.Matriptase和HAI-1在BTCC中相关性降低,两者比例失衡可能在BTCC发生发展过程中具有重要作用.     

hTERT和survivin在膀胱移行细胞癌中的表达及意义

目的探讨膀胱移行细胞癌（TCCB）中hTERT和survivin的表达及意义。方法采用免疫组化S-P法检测hTERT和survivin在84例TCCB和15例正常膀胱黏膜组织中的表达。结果84例TCCB中hTERT、survivin的阳性表达率分别为83．3％（70／84）、48．8％（41／84）;hTERT表达的阳性率与TCCB的病理分期、分级无相关性;survivin表达的阳性率与TCCB的病理分期、分级有相关性;hTERT与survivin表达之间具有相关性。结论hTERT和survivin的表达均参与了膀胱癌的发生发展过程,survivin和hTERT在恶性肿瘤的发生、发展中具有协同作用。     

膀胱移行细胞癌中survivin基因和血管内皮生长因子的表达和意义

目的：探讨survivin基因和血管内皮生长因子（vascularendothelialgrowthfactor,VEGF）在膀胱移行细胞癌中的表达和意义。方法：用免疫组化二步法检测58例膀胱移行细胞癌组织及20例正常膀胱粘膜组织中VEGF和survivin的表达。结果：20例正常膀胱粘膜组织中VEGF、survivin表达均为阴性;survivin、VEGF在膀胱移行细胞癌阳性表达分别为33例（56．9％）、30例（51．7％）。肿瘤不同分级中随恶性程度的增高,表达增高,Ⅰ级与Ⅲ级比较,差异有显著性意义（P〈0．05）。不同临床分期中随分期的增高,表达增高,Tis—T1与T2-T4比较,差异有显著性意义（P〈0．05）。survivin、VEGF在膀胱移行细胞癌表达呈正相关（r=0．385,P〈0．01）。结论：VEGF和survivin在膀胱移行细胞癌的发生、发展过程中起着重要的作用。survivin基因可能参与了肿瘤血管的形成。     

人膀胱移行细胞癌TGF β1及其受体的表达意义

我们采用免疫组化方法 ,检测人膀胱移行细胞癌 (ＴＣＣｓ)中转化生长因子 β1(ｔｒａｎｓｆｏｒｍｉｎｇｇｒｏｗｔｈｆａｃｔｏｒβ1,ＴＧＦβ1)及其相关受体ＴβＲⅠ、ＴβＲⅡ ,以及增殖细胞核抗原ＰＣＮＡ的表达 ,探讨ＴＧＦβ 1及其相关受体蛋白表达与ＴＣＣｓ生物学行为的关系。一、资料和方法1 研究对象 :1987～ 1995年间天津肿瘤医院ＴＣＣｓ术后标本74例 ,皆为临床资料及随访 5年以上记录完整的可评价病例。病理分级 :Ｇ1期 2 3例 ,Ｇ2 期 2 3例 ,Ｇ3 期 2 8例。ＴＮＭ分期 :ＴＡ～Ｔ16例 ,Ｔ2 35例 ,Ｔ3～Ｔ4 33例。取 7例前列腺…     

转化生长因子β1、β2在膀胱移行细胞癌组织中的表达及其意义

目的探讨转化生长因子β1、β2(TGFβ1、TGFβ2)与膀胱移行细胞癌的病理分级、复发以及预后的关系.方法采用免疫组化方法检测66例膀胱移行细胞癌组织中TGFβ1、TGFβ2的表达情况.结果TGFβ1、TGFβ2的表达与膀胱移行细胞癌的病理分级相关(P＜0.05).结论TGFβ1、TGFβ2的低表达或无表达是肿瘤恶性程度的重要指标之一,TGFβ1、TGFβ2的表达情况可能是判断膀胱移行细胞癌恶性程度、复发及预后的重要指标.     

PCNA及bcl-2基因在膀胱移行细胞癌组织中的表达及其意义

目的 :探讨PCNA和bcl 2基因在膀胱癌组织中的表达及其预后意义 ,了解肿瘤增殖与凋亡的特点 ,揭示细胞凋亡和增殖在膀胱癌发生发展中的作用。方法 :采用免疫组织化学LSAB法 ,对 78例膀胱移行细胞癌组织进行PCNA和bcl 2表达的检测。结果 :在膀胱癌中 ,PCNA主要呈胞核表达 ,bcl 2呈胞质表达 ,PCNA和bcl 2染色阳性率分别为 35 9%和 5 6 4 % ;PCNA表达与膀胱移行细胞癌组织分级、预后呈正相关 (P =0 0 1,P =0 0 386 ) ,bcl 2亦与肿瘤分级、预后呈高度正相关 (P =0 0 0 0 2 ,P =0 0 116 ) ;PCNA和bcl 2表达无明显相关 (P =0 2 32 7)。结论 :PCNA和bcl 2参与膀胱癌的恶性转化、侵袭及进展的过程 ;检测PCNA和bcl 2有助于判断膀胱肿瘤恶性分化程度 ,并且二者可以作为预后的评价指标     

p16和cyclinD_1蛋白在膀胱移行细胞癌中的表达及意义

 目的探讨ｐ１６、ｃｙｃｌｉｎＤ１蛋白表达与膀胱移行细胞癌（ＴＣＣ）临床分期、病理分级及预后的关系。方法采用免疫组化Ｓ－Ｐ法检测 ５９例膀胱ＴＣＣ中ｐ１６、ｃｙｃｌｉｎＤ１蛋白的表达。结果膀胱ＴＣＣ 组织中 ｐ１６蛋白阳性表达率为 ４２．４％，随临床分期、病理分级增高而下降，ｃｙｃｌｉｎＤ１蛋白阳性表达率为 ６１％，随临床分期增高而上升；ｐ１６、ｃｙｃｌｉｎＤ１蛋白表达间呈负相关；ｐ１６阳性组和 ｃｙｃｌｉｎＤ１阴性组复发率明显低于 ｐ１６阴性组和ｃｙｃｌｉｎＤ１阳性组；ｐ１６阳性组和 ｃｐｃｌｉｎＤ１阴性组 ３年存活率明显高于 ｐ１６阴性组和 ｃｙｃｌｉｎＤ１阳性组。结论ｐ１６、ｃｙｃｌｉｎＤ１蛋白检测可作为膀胱ＴＣＣ辅助诊断及预后判断的参考指标。     

Expression of embryonic stem cell marker Oct-4 and its prognostic significance in rectal adenocarcinoma

Objective: Recent evidence suggests that Oct-4 is highly expressed in several cancers, and its expression contributes to tumor growth. In this study, we investigated the level of Oct-4 expression in rectal adenocarcinoma, and evaluated the prognostic significance of Oct-4 expression in these cases.Methods: The immunohistochemical expression of Oct-4 was evaluated in 52 formalin-fixed paraffin-embedded postoperative rectal adenocarcinoma tissue samples. The impact of the immunoreactivity of Oct-4 in regard to clinical outcome was determined by Kaplan-Meier and log-rank.Results: The expression level of Oct-4 ranged from 0 to 18.5%. There was no significant association between Oct-4 expression and gender (P=0.772), age (P=0.123), clinical stage (P=0.391), and histological grade (P=0.056). The 3-year local recurrence-free rates with negative and positive expression of Oct-4 were 83.5% and 75.0%, respectively (P=0.583). The 3-year metastasis-free rates with negative and positive expression of Oct-4 were 88.6% and 61.9%, respectively (P=0.035). The 3-year overall survival rates with negative and positive expression of Oct-4 were 77.9% and 49.0%, respectively (P=0.037).Conclusion: The results suggest that embryonic stem cell marker Oct-4 expression may have prognostic significance in patients with rectal adenocarcinoma. However, to confirm this more and larger studies are required.     

Oct－4在结直肠癌组织中表达及其与预后的关系

目的：探讨Oct－4蛋白在结直肠癌组织中的表达与患者临床病理学参数及预后的关系。方法应用免疫组化法检测本院101例结直肠癌组织中 Oct－4蛋白的表达情况。分析 Oct－4蛋白表达与结直肠癌临床病理参数的关系及其对患者预后的影响。结果 Oct－4蛋白在结直肠癌组织中阳性表达率为59．41％（60／101）,其阳性表达与患者性别（P＝0．020）、肿瘤 T 分期（P＝0．030）、N分期（P＝0．001）、TNM 分期（P＜0．001）和 Duke 分期（P＜0．001）显著相关。 Oct－4蛋白阳性表达患者总体5年生存率为10％,显著低于阴性表达患者的总体 5年生存率56．1％（P＜0．001）。 Oct－4蛋白阴性表达患者5年无疾病进展生存率为51．22％,显著高于阳性表达患者5年无疾病进展生存率27．72％（P＝0．001）。 COX 多因素回归分析结果表明肿瘤直径（HR＝0．433,95％ CI：0．243～0．772,P＝0．005）、TNM分期（HR＝3．49,95％ CI：2．352～5．181,P＜0．001）和 Oct－4阳性表达（HR＝0．432,95％ CI：0．248～0．754,P＝0．005）是影响患者预后的独立危险因子。结论 Oct－4蛋白阳性表达可作为结直肠癌患者预后不佳的预测指标。     

Clinicopathological significance of non-small cell lung cancer with high prevalence of Oct-4 tumor cells

Background

Expression of the stem cell marker octamer 4 (Oct-4) in various neoplasms has been previously reported, but very little is currently known about the potential function of Oct-4 in this setting. The purpose of this study was to assess the prognostic value of Oct-4 expression after surgery in primary non-small cell lung cancer (NSCLC) and investigate its possible molecular mechanism.

Methods

We measured Oct-4 expression in 113 NSCLC tissue samples and three cell lines by immunohistochemical staining and RT-PCR. The association of Oct-4 expression with demographic characteristics, proliferative marker Ki67, microvessel density (MVD), and expression of vascular endothelial growth factor (VEGF) were assessed.

Results

Oct-4 expression was detected in 90.3% of samples and was positively correlated with poor differentiation and adenocarcinoma histology, and Oct-4 mRNA was found in each cell lines detected. Overexpression of Oct-4 had a strong association with cells proliferation in all cases, MVD-negative, and VEGF-negative subsets. A Kaplan-Meier analysis showed that overexpression of Oct-4 was associated with shorter overall survival in all cases, adenocarcinoma, squamous cell carcinoma, MVD-negative, and VEGF-negative subsets. A multivariate analysis demonstrated that Oct-4 level in tumor tissue was an independent prognostic factor for overall survival in all cases, MVD-negative, and VEGF-negative subsets.

Conclusion

Our findings suggest that, even in the context of vulnerable MVD status and VEGF expression, overexpression of Oct-4 in tumor tissue represents a prognostic factor in primary NSCLC patients. Oct-4 may maintain NSCLC cells in a poorly differentiated state through a mechanism that depends on promoting cell proliferation.     

Oct-4 and Nanog promote the epithelial-mesenchymal transition of breast cancer stem cells and are associated with poor prognosis in breast cancer patients

Oct-4 and Nanog in regulating the epithelial-mesenchymal transition (EMT) and metastasis of breast cancer has not been clarified. We found that both Oct-4 and Nanog expression were significantly associated with tumor pathology and poor prognosis in 126 breast cancer patients. Characterization of CD44+CD24-Cancer stem cell(CSC) derived from breast cancer cells indicated that CSC rapidly formed mammospheres and had potent tumorigenicity in vivo. Furthermore, TGF-β up-regulated the expression of Oct-4, Nanog, N-cadherin, vimentin, Slug, and Snail, but down-regulated E-cadherin and cytokeratin 18 expression, demonstrating that CSC underwent EMT. Knockdown of both Oct-4 and Nanog expression inhibited spontaneous changes in the expression of EMT-related genes, while induction of both Oct-4 and Nanog over-expression enhanced spontaneous changes in the expression of EMT-related genes in CSC. However, perturbing alternation of Oct-4 and Nanog expression also modulated TGF-β-induced EMT-related gene expression in CSC. Induction of Oct-4 and Nanog over-expression enhanced the invasiveness of CSC, but knockdown of both Oct-4 and Nanog inhibited the migration of CSC in vitro. Our data suggest that both Oct-4 and Nanog may serve as biomarkers for evaluating breast cancer prognosis. Our findings indicate that Oct-4 and Nanog positively regulate the EMT process, contributing to breast cancer metastasis.     

宫颈癌HeLa细胞株GCNF和Oct-4诱导分化表达

目的：检测生殖细胞核因子（germ cell nuclear factor,GCNF）及Oct-4在宫颈癌HeLa细胞诱导分化前后的表达。方法：用全反式维甲酸（all-trans-retinoicacid,ATRA）诱导HeLa细胞分化,HE染色观察诱导前后细胞的形态变化;通过免疫组化和半定量的RT-PCR方法,检测GCNF及Oct-4在HeLa细胞诱导分化前后的表达。应用SPSS 13.0软件进行统计学处理。结果：随着诱导时间的延长HeLa细胞体积变小,圆形细胞逐渐增多,细胞核开始固缩;GCNF在诱导前后的HeLa细胞中均有表达,随着诱导时间延长其表达逐渐增强但3d后表达强度开始下降,F=14.67,P〈0.001。3d组和1d组、2d组和5d组比较差异无统计学意义;但与对照组比较,差异有统计学意义,P〈0.05;Oct-4在诱导前后的细胞中均不表达。结论：GCNF参与了肿瘤细胞的体外分化;在体外培养的宫颈癌细胞株中,GCNF基因可能关闭了Oct-4的激素反应元件。     

膀胱癌组织中MMP-2与TIMP-2 mRNA的表达及临床意义

Objective:The aim of the study was to investigate the expressions of matrix metalloproteinase-2(MMP-2) and tissue inhibitor of MMP-2(TIMP-2) mRNA in transitional cell carcinomas of bladder and discuss their clinical significances.Methods:Using RT-PCR and real time quantitative PCR(RQ-PCR) technique,the expressions of MMP-2 and TIMP-2 mRNA of 45 cases of bladder carcinoma(tumor group) and 10 cases of normal bladder tissue(control group) were analyzed.Results:MMP-2 and TIMP-2 were not expressed in control gro...     

喉鳞癌组织中Oct-4 mRNA的表达及意义

目的探讨Oct-4 mRNA在喉鳞癌组织中的表达及意义。方法采用RT-PCR和荧光定量PCR检测48例喉鳞癌及其癌旁正常喉黏膜组织中Oct-4 mRNA的表达。结果 RT-PCR显示Oct-4 mRNA在喉鳞癌组织中的阳性率为64.6%,荧光定量PCR显示喉鳞癌组织中Oct-4 mRNA的相对表达量为0.533±0.142,而癌旁正常喉黏膜组织未检测出Oct-4基因的表达（P〈0.01）。Oct-4 mRNA在喉鳞癌高分化组阳性率为33.3%,显著低于中、低分化组的69.0%（P〈0.05）;无淋巴结转移组阳性率为47.8%,显著低于有淋巴结转移组的80.0%（P〈0.05）;Ⅰ、Ⅱ期组阳性率为47.4%,低于Ⅲ、Ⅳ期组的75.9%（P〈0.05）。荧光定量PCR结果显示Oct-4基因的相对表达量随着喉鳞癌组织分化减低、淋巴结转移和高的临床分期而显著增加（P〈0.05）。结论 Oct-4基因的高表达可能参与了喉鳞癌的发生、发展,并对判断喉鳞癌患者的生物学行为有一定意义。     

肿瘤干细胞标志物CD133、CD44、OCT-4在小细胞肺癌中的表达及其临床意义

目的：探讨肿瘤干细胞标志物CD133、CD44、OCT-4与小细胞肺癌临床病理特征之间的相关性及临床意义。方法应用免疫荧光技术检测小细胞肺癌细胞株NCI-H82中肿瘤干细胞标志物CD133、CD44、OCT-4的表达;同时应用免疫组织化学法检测79例小细胞肺癌组织中CD133、CD44、OCT-4的表达。结果在小细胞肺癌细胞株NCI-H82中,CD133和CD 44的荧光信号为阳性表达,OCT-4的荧光信号为阴性表达。小细胞肺癌组织中CD133和CD44表达与肿瘤直径、淋巴结转移和临床分期相关,差异具有统计学意义（P＜0.05）。小细胞肺癌组织中OCT-4为阴性表达。结论 CD133和CD44可能是小细胞肺癌肿瘤干细胞的标志物,对小细胞肺癌的诊断和治疗有一定的临床意义。