GRP94和CD8在宫颈病变组织中的表达及意义

目的：探讨葡萄糖调节蛋白94（glucose—regulated protein94,GRP94）和CD8在宫颈病变组织中的表达及与HPV感染的关系。方法：采用免疫组化S—P法检测32例原发宫颈癌、27例宫颈上皮内瘤变（cervical intraepithelial neoplasia, CIN）及40例慢性宫颈炎组织中GRP94和CD8的表达及定位;采用western blot技术检测6例宫颈癌及6例正常宫颈组织中GRP94和CD8的表达。结果：①在宫颈癌、CIN2／3、CIN1及慢性宫颈炎组织中,GRP94的阳性表达率分别为87．5％、82．4％、40％和22．5％;CD8的阳性表达率分别为28．1％、64．7％、90％和97．5％;GRP94在宫颈癌和CIN2／3中的表达均显著高于慢性宫颈炎和CIN1组织（P均〈0．05）;CD8在宫颈癌组的表达显著低于慢性宫颈炎组、CIN1组及CIN2／3组（P均〈0．05）。②Western blot结果示GRP94在宫颈癌组织中的表达显著高于正常宫颈组织（P〈0．01）;CD8在宫颈癌组织中的表达显著低于正常宫颈组织（P〈0．01）。③GRP94的表达与宫颈癌分化程度、有无脉管侵袭有关（P〈0．05）,而与年龄、病理类型、临床分期及有无淋巴结转移无关（P〉0．05）;CD8的表达与有无脉管侵袭有关（P〈0．05）,而与年龄、病理类型、临床分期、分化程度及有无淋巴结转移无关（P〉0．05）。④宫颈病变组织中,GRP94的表达与HPV感染呈正相关（rs=0．377,P=0．000）;cD8的表达与HPV感染呈负相关（rs=-0．395,P=0．000）;GRP94与CD8的表达呈负相关（rs=-0．608,P=0．000）。结论：GRP94表达可能是宫颈CIN进展及宫颈癌预后判断的重要预测指标。     

宫颈癌中p53表达和病毒感染的研究

应用PCR对121例宫颈脱落细胞和组织分别检测HPV-16／18和HSV-2DNA。同时应用免疫组化S-P法检测76例宫颈组织中P53过度表达。结果发现,宫颈癌组织中HPV-16／18和HSV-2阳性率分别为61．3％和32．3％,慢性宫颈炎组HPV-16／18和HSV-2阳性率分别为22．5％和20．0％,与正常宫颈组比较均有显著性差异。宫颈癌中HPV-16／18和HSV-2混合感染率为16．1％。p53过度表达率在慢性宫颈炎、宫颈上皮内瘤变(CIN)、宫颈癌组织中呈梯度递增。另外,宫颈癌组织中P53过度表达与HPV-16／18、HSV-2的感染无相关性。提示：宫颈癌的发生与HPV-16／18关系密切,HSV-2可能与HPV-16／18协同作用导致宫颈癌的发生。宫颈组织中p53过度表达率与宫颈癌的进程有关,这在宫颈癌的防治方面有一定的临床意义。     

PDGF—D和VEGF在宫颈鳞癌中的表达及其意义

目的：检测宫颈鳞癌组织中血小板源性生长因子D（PDGF—D）和血管内皮生长因子（VEGF）的表达,探讨二者在宫颈癌变过程中的作用及意义,为探讨宫颈鳞癌的发病机制和宫颈鳞癌的早期治疗提供理论依据。方法：采用免疫组织化学（sP法）检测40例宫颈鳞癌和10例正常宫颈组织中PDGF—D和VEGF蛋白的表达,分析两者之间的相关性及其与临床病理特征之间的关系。结果：宫颈鳞癌组织中PDGF—D和VEGF蛋白的表达显著高于正常宫颈组织（P〈0．05）;PDGF—D和VEGF的表达与宫颈鳞癌的分化程度及淋巴结转移有关（P〈0．05）;与年龄及临床分期无关（P〉0．05）。Spearman相关分析发现PDGF—D与VEGF表达程度呈正相关（r=0．346,P〈0．05）。结论：1．PDGF—D和VEGF在宫颈鳞癌组织中特异性高表达,可能在宫颈鳞癌的发生、发展与转移中起着重要作用。2．PDGF-D和VEGF表达与宫颈鳞癌的分化程度及淋巴结转移有关,与年龄及临床分期无关,提示它们可能在宫颈鳞癌的浸润和转移及预后方面有重要的监测意义。3．PDGF-D和VEGF在宫颈鳞癌组织中的表达呈正相关,提示两者起着相互促进的作用,对PDGF—D和VEGF的联合检查,为临床实际应用提供了参考。     

Altered expression of cellular membrane molecules of HLA-DR, HLA-G and CD99 in cervical intraepithelial neoplasias and invasive squamous cell carcinoma

OBJECTIVE: The aim of this study was to investigate the role of HLA-DR, HLA-G and CD99 during cervical carcinogenesis and to examine the prognostic significance of these protein expressions in invasive squamous cell carcinoma (SCC). METHODS: Using specific antibodies for HLA-DR, HLA-G and CD99, we examined protein expressions in 19 normal cervix, 15 mild dysplasia (CIN I), 22 moderate dysplasia (CIN II), 23 severe dysplasia (CIN III), and 34 invasive squamous cell carcinoma by immunohistochemistry. And we detected the expression of Ki67 in the same specimens. RESULTS: None of normal cervix and CINs except three cases of CIN III expressed HLA-DR. HLA-DR expression increased progressively with the grade of the tumor, and significant differences could be observed between grade 1 and grade 2 (P<0.01) and between grade 1 and grade 3 (P<0.05). In all normal epithelial control samples, HLA-G expression was seen in ectocervical squamous and endocervical columnar epithelium and the staining was strong and uniform. Only a small proportion of CINs and SCCs showed reduced expression of HLA-G. Compared with the results in the control samples, CINs and SCCs showed significantly reduced expression of HLA-G (P<0.001). SCCs showed significantly increased expression of CD99 when compared with normal cervix and CINs (P<0.05). Ki67 was expressed in all specimens. Significant differences were observed between CINs and normal cervix (P<0.001) and SCCs and controls (P<0.001), but no significant differences could be observed between SCCs and CINs. None of the expressions of these proteins was associated with any of clinicopathological parameters. CONCLUSIONS: These results indicate that increased expression of HLA-DR and CD99 may be related to the evolution of cervical cancer. All protein expressions were not associated with clinicopathological parameters.     

应用实时荧光定量RT-PCR检测宫颈癌及其外周血中VEGF表达的研究

目的:研究血管内皮生长因子在宫颈癌患者癌和癌旁组织及外周血循环细胞中的表达情况,分析其在肿瘤生长与转移中的作用。方法:采用基于TaqMan探针技术的实时荧光定量RT-PCR法检测了50例宫颈癌患者癌及癌旁组织和40例正常宫颈组织标本中VEGF mRNA的表达情况及其对应的外周血中的VEGF mRNA表达,分析其与临床病理参数之间的关系。结果:宫颈癌组织及癌旁组织中VEGF mRNA的表达水平无明显差异,但均与正常宫颈组织的表达水平差异有显著性;宫颈癌组织中VEGF mRNA的表达与肿瘤的组织学类型无明显的相关性;而与肿瘤的临床病理分期、病理分化程度、淋巴结转移、肿瘤直径、深肌层浸润间均呈显著的正相关。宫颈癌患者外周血中VEGF的表达明显高于对照组水平,与淋巴结是否转移密切相关,但与其他临床病理参数无关。结论:实时荧光定量RT-PCR可以敏感且特异性的检测出宫颈癌组织及外周血中VEGF mRNA的表达,且方法准确可靠,操作方便,在肿瘤的微转移的诊断监测方面有一定的应用价值。VEGF有可能成为治疗恶性肿瘤的一个潜在的分子靶点。     

GRP94 和CD8 在宫颈病变组织中的表达及意义

目的:探讨葡萄糖调节蛋白94(glucose-regulated protein94,GRP94)和CD8在宫颈病变组织中的表达及与HPV感染的关系。方法:采用免疫组化S-P法检测32例原发宫颈癌、27例宫颈上皮内瘤变(cervical intraepithelial neoplasia,CIN)及40例慢性宫颈炎组织中GRP94和CD8的表达及定位;采用western blot技术检测6例宫颈癌及6例正常宫颈组织中GRP94和CD8的表达。结果:①在宫颈癌、CIN2/3、CIN1及慢性宫颈炎组织中,GRP94的阳性表达率分别为87.5%、82.4%、40%和22.5%;CD8的阳性表达率分别为28.1%、64.7%、90%和97.5%;GRP94在宫颈癌和CIN2/3中的表达均显著高于慢性宫颈炎和CIN 1组织(P均<0.05);CD8在宫颈癌组的表达显著低于慢性宫颈炎组、CIN1组及CIN2/3组(P均<0.05)。②Western blot结果示GRP94在宫颈癌组织中的表达显著高于正常宫颈组织(P<0.01);CD8在宫颈癌组织中的表达显著低于正常宫颈组织(P<0.01)。③GRP94的表达与宫颈癌分化程度、有无脉管侵袭有关(P<0.05),而与年龄、病理类型、临床分期及有无淋巴结转移无关(P>0.05);CD8的表达与有无脉管侵袭有关(P<0.05),而与年龄、病理类型、临床分期、分化程度及有无淋巴结转移无关(P>0.05)。④宫颈病变组织中,GRP94的表达与HPV感染呈正相关(rs=0.377,P=0.000);CD8的表达与HPV感染呈负相关(rs=-0.395,P=0.000);GRP94与CD8的表达呈负相关(rs=-0.608,P=0.000)。结论:GRP94表达可能是宫颈CIN进展及宫颈癌预后判断的重要预测指标。     

TSHR蛋白在宫颈癌的表达及其与HPV-16感染的关系

目的研究促甲状腺激素受体（TSHR）在子宫颈癌组织的表达及其与乳头瘤病毒（HPV－16）的关系。方法应用免疫组织化学链霉菌抗生物素过氧化物酶（SP）法检测79例子宫颈癌和30例子宫颈炎组织HPV－16与TSHR蛋白表达。79例癌症患者中病理分级〈Ⅱ级33例,≥Ⅱ级46例;病理分期〈Ⅱ期56例,≥Ⅱ期23例;无淋巴结转移66例,有淋巴结转移13例;肿瘤大小〈3cm44例,肿瘤大小≥3cm35例。结果HPV－16在子宫颈癌表达率55．70％明显高于宫颈炎5％（P〈0．05）,TSHR在子宫颈癌表达率68．35％明显高于宫颈炎26．67％（P〈0．05）。HPV－16表达与肿瘤的大小、肿瘤分级、分期、淋巴结转移不相关。TSHR表达与肿瘤的大小呈正相关,P〈0．05,与肿瘤分级、分期及淋巴结转移不相关。HPV－16与TSHR在宫颈癌表达呈正相关。结论HPV感染对宫颈癌病变起到强烈的预警作用。TSHR不仅在甲状腺滤泡上皮细胞表达,在子宫颈癌细胞也表达,TSHR过表达能促进宫颈细胞的异常增殖,其异常功能可能是恶性肿瘤特定的临床表型。HPV与TSHR在子宫颈癌变过程中起协同作用。     

宫颈癌中骨桥蛋白和CD44v6的表达及临床意义

目的探讨骨桥蛋白(OPN)和CD44v6在宫颈浸润癌中的表达及其意义。方法应用免疫组化SP法检测OPN和CD44v6在10例慢性宫颈炎、30例宫颈上皮内瘤样变及50例宫颈浸润癌组织中的表达。结果OPN在以上组织中的阳性表达率分别为10.00%(1/10)、36.67%和60.00%,慢性宫颈炎与宫颈浸润癌之间的表达差异有显著性(P<0.01);CD44v6阳性表达率分别为10.00%(1/10)、43.33%和68.00%,慢性宫颈炎与宫颈浸润癌之间的表达差异有显著性(P<0.01)。宫颈浸润癌组织中OPN和CD44v6表达均与患者年龄、肿瘤病理分级、组织学类型无关(P>0.05),而与淋巴结转移有关(P<0.05)。OPN与CD44v6的表达之间有显著正相关性(r=0.829,P<0.01)。结论OPN、CD44v6可能参与了宫颈癌的发生、发展和转移过程,联合检测它们的表达可作为判断宫颈癌的预后和术后复发的评估指标。     

PTEN、HPV16/18-E6蛋白和雌激素受体在宫颈腺癌中的表达及其临床意义

目的：探讨宫颈腺癌组织中抑癌蛋白PTEN、人乳头瘤病毒（HPV）16/18-E6蛋白和雌激素受体（ER）的表达及其临床意义。方法：采用免疫组织化学S-P法对65例宫颈腺癌组织进行PTEN、HPV16/18-E6蛋白和ER检测,对30例慢性宫颈炎组织中HPV16/18-E6蛋白和ER的表达进行检测。结果：宫颈腺癌组织细胞核中PTEN的表达显著低于癌旁宫颈腺上皮组织（P〈0.01）,96%的宫颈腺癌细胞核呈低表达,而仅35%的癌旁宫颈腺上皮呈低表达（P〈0.01）;HPV16/18-E6蛋白和ER在宫颈腺癌中的阳性表达率分别为32.1%与49.4%,均显著高于慢性宫颈炎组织（P〈0.01）;HPV16/18-E6蛋白和ER的表达与宫颈腺癌的病理学分级、临床分期无关,在宫颈腺癌中的表达呈正相关。结论：PTEN在宫颈腺癌的发生中起一定的作用,其抑癌作用环节可能在细胞核水平;部分宫颈腺癌的发病可能与HPV16/18-E6蛋白过度表达有关;部分宫颈腺癌可能属于激素依赖性,雌激素可能有协同人乳头瘤病毒致癌的作用。     

Expression of vascular endothelial growth factor in the progression of cervical neoplasia and its relation to angiogenesis and p53 status

OBJECTIVE: To evaluate vascular endothelial growth factor (VEGF) expression in the successive steps of cervical neoplasia and to determine its correlation with angiogenesis and p53 status. STUDY DESIGN: Immunohistochemical staining with a VEGF monoclonal antibody was performed on a total of 161 cervical specimens representing 12 normal epithelium, 33 cervical intraepithelial neoplasia (CIN) 1, 30 CIN 3 and 86 squamous cell carcinomas. Microvessels were immunohistochemically labeled with an antibody to CD34. Computerized image analysis was used to evaluate microvessel density (MVD). p53 Status was determined by immunohistochemistry and direct sequencing of exons 5-8 of the p53 gene. RESULTS: VEGF expression progressively increased along the continuum from normal epithelium to squamous cell carcinoma (P < .05). MVD increased significantly with cervical neoplasia progression, from normal epithelium, through CIN, to squamous cell carcinoma (P < .001). A strong correlation was observed between VEGF expression and MVD (P < .001). p53 Protein expression was not detected in the normal epithelium or in CIN 1, while 3 (10%) of 30 CIN 3 and 28 (33%) of 86 squamous cell carcinomas were positive for p53. VEGF expression correlated statistically with p53 protein expression (P < .001). In double VEGF- and p53-stained sections, the 2 markers were generally expressed in the same tumor cells. Of the 4 p53 gene mutations, 3 exhibited strong VEGF expression, and 1 exhibited moderate VEGF expression. VEGF expression did not correlate significantly with outcome variables in patients with squamous cell carcinoma. CONCLUSION: Our results suggest that VEGF expression is involved in the promotion of angiogenesis in cervical neoplasia and that p53 is likely to be involved in the regulation of VEGF expression.     

Immunohistochemical Expression of RAGE and Its Ligand (S100A9) in Cervical Lesions

Altered expressions of receptor for advanced glycation end-products (RAGE) and its ligand (S100A9) are observed in many cancers and play a key role in inflammation-associated cancer. In our previous study, by two-dimensional gel electrophoresis followed by mass spectrometry, the expression of S100A9 protein was found to increase in squamous cervical cancer compared with adjacent normal cervical tissues. Therefore, in the present study we observed the expressions of S100A9 and RAGE in 30 chronic cervicitis, 50 cervical intraepithelial neoplasia (CIN), and 40 squamous cervical cancer (SCC) using immunohistochemical analysis and analyzed the differential expression and possible role of S100A9 and RAGE in cancer development. Immunohistochemical findings were as follows: the expressions of S100A9 and RAGE were demonstrated in chronic cervicitis, CIN, and SCC. Moreover, their expressions were gradually increasing as the tumor progressed. In SCC, the staining scores of S100A9 and RAGE were significantly higher in well-differentiated tumors compared to moderately and poorly differentiated tumors. The expression of S100A9 in epithelial cells exhibited a positive correlation to RAGE expression in chronic cervicitis, CIN, and SCC. There were no significant difference of S100A9 immunoreactivity in stromal cells among chronic cervicitis, CIN, and SCC. Moreover, there was no correlation between S100A9 immunoreactivity in stromal cells of SCC and clinicopathological parameters. Finally, double immunohistochemistry illustrated that RAGE and S100A9 co-express in SCC. In conclusion, RAGE binds its ligand (S100A9), which plays an important role in the development of SCC. In addition, the expressions of S100A9 and RAGE in SCC tumor cells were closely associated with histological differentiation.     

Expression and Biological Significance of Leptin,Leptin Receptor,VEGF, and CD34 in Colorectal Carcinoma

To investigate the expression and biological significance of Leptin, Leptin receptor, Vascular Endothelial Growth Factor (VEGF), and CD34 protein in colorectal carcinoma tissues. The expression of Leptin, Leptin receptor, VEGF, and CD34 was detected in 68 cases of colorectal carcinoma tissues, paired para-carcinoma tissues and normal colorectal tissues by Immunohistochemical SP Method. The results and related clinicopathological data were analyzed. The positive rate of Leptin, Leptin receptor, and VEGF was significantly higher in colorectal carcinoma tissues than that in paired para-carcinoma tissues and normal colorectal tissues. The expression of Leptin, Leptin receptor, and VEGF was correlated with grade of tumor differentiation, depth of bowel wall invasion, lymph node metastasis, Dukes stage, distant metastasis, and lympho/vascular tumor embolization. Microvessel density (MVD) value in colorectal carcinoma was significantly higher than that in para-carcinoma tissues and normal colorectal tissues, and the density in para-carcinoma tissues was higher than that in normal colorectal tissues. The expression of Leptin, Leptin receptor, VEGF, and MVD value in colorectal carcinoma was positively correlated. In conclusion, microvessel density value is an important index of the growth, invasion, and metastasis of colorectal carcinoma. The binding of Leptin and Leptin receptor promotes the proliferation of colorectal carcinoma cells. The synergy between Leptin and VEGF accelerates the angiogenesis in colorectal carcinoma and accelerates the invasion and metastasis of the tumor cells.     

HPV检测在宫颈癌、宫颈癌前病变及宫颈炎患者中的临床应用

目的:研究人类乳头瘤病毒(HPV)检测在宫颈癌、宫颈癌前病变及宫颈炎患者中的临床鉴别价值。方法:选取2013年5月到2015年5月我院确诊的宫颈病变临床资料320例,根据病理诊断结果将患者分为宫颈癌组(59例)、癌前病变组(138例)以及宫颈炎组(123例),检测并比较三组HPV阳性检出率、HPV相对含量以及HPV-DNA亚型情况。结果:宫颈炎组HPV阳性检出率、HPV相对含量及HPV-DNA各亚型阳性率均显著低于癌前病变组和宫颈癌组,且癌前病变组均显著低于宫颈癌组,比较差异具有统计学意义(P0.05)。结论:HPV有助于鉴别宫颈癌、宫颈癌前病变及宫颈炎,对宫颈病变治疗和预后具有评价作用。     

Activation of CD40 in cervical carcinoma cells facilitates CTL responses and augments chemotherapy-induced apoptosis

In this study, we describe the expression and function of CD40, a TNF receptor family member, in cervical carcinomas. CD40 was present at very low levels in normal cervical epithelium but was overexpressed in human papillomavirus-infected lesions and advanced squamous carcinomas of the cervix. The stimulation of CD40-positive cervical carcinoma cell lines with soluble CD40L (CD154) resulted in activation of the NF-kappaB and MAPK signaling pathways and up-regulation of cell surface markers and intracellular molecules associated with Ag processing and presentation. Concomitantly, the CD154-induced activation of CD40 in carcinoma cells was found to directly influence susceptibility to CTL-mediated killing. Thus, CD40 stimulation in cervical carcinoma cell lines expressing a TAP-dependent human papillomavirus 16 E6 Ag epitope resulted in their enhanced killing by specific CTLs. However, CD154 treatment of carcinoma cells expressing proteasome-dependent but TAP-independent Ags from the EBV-encoded BRLF1 and BMLF1 failed to increase tumor cell lysis by specific CTLs. Moreover, we demonstrate that chemotherapeutic agents that suppress protein synthesis and reverse the CD40-mediated dissociation of the translational repressor eukaryotic initiation factor 4E-binding protein from the initiation factor eukaryotic initiation factor 4E, such as 5-fluorouracil, etoposide, and quercetin, dramatically increase the susceptibility of cervical carcinoma cells to CD40L-induced apoptosis. Taken together, these observations demonstrate the functional expression of CD40 in epithelial tumors of the cervix and support the clinical exploitation of the CD40 pathway for the treatment of cervical cancer through its multiple effects on tumor cell growth, apoptosis, and immune recognition.     

P21蛋白在不同级别宫颈组织中的表达及其与高危HPV感染相关性的研究

目的通过检测宫颈组织中p21waf基因表达与高危HPV感染的情况,研究P21蛋白与高危HPV感染在宫颈组织恶性转化过程中的作用及其相互关系。方法应用免疫组化检测P21蛋白及基因杂交捕获Ⅱ代技术(HC-Ⅱ)检测高危HPV在正常宫颈组、宫颈炎、宫颈上皮内瘤样病变(CIN)及宫颈癌组这4组中的表达情况。结果在正常宫颈组、宫颈炎、宫颈上皮内瘤样病变(CIN)、及宫颈癌组中P21的阳性表达率分别为11.8%、15.4%、39.1%和57.7%;高危HPV的阳性表达率分别为20%、23.5%、65.2%和88.5%,这两项指标在CIN、宫颈癌组有明显的升高趋势且与正常宫颈和宫颈炎两组相比差异具有显著性统计学意义(P<0.05);各级别宫颈组织中高危HPV阳性组的P21蛋白阳性率明显高于阴性组的P21蛋白阳性率。差异在统计学上具有显著性意义(P<0.05)。结论P21蛋白的表达和高危HPV感染与宫颈病变的恶化均有高度的相关性,其检出率和阳性表达率随着宫颈病变恶性程度的增加而升高。在CIN向宫颈癌恶性转化过程中,P21与高危HPV共同促进肿瘤的发生。     

1235例妇科门诊患者高危型HPV感染状况及亚型分布调查研究

目的了解本地区妇科门诊患者宫颈高危型HPV感染状况及亚型分布,为今后的宫颈癌前病变、宫颈癌防治提供临床依据。方法采用基因芯片技术对1 235例妇科门诊患者进行HPV筛查,筛查出的阳性患者应用流式荧光杂交法进行高危型HPV亚型检测,分析比较宫颈炎、宫颈鳞癌及宫颈腺癌患者高危型HPV感染情况及亚型分布差异。结果六安市金安区妇幼保健院妇科门诊患者HPV感染率高达60%,其中高危型HPV感染率为43. 2%,主要以HPV16、HPV18为主;低危型HPV感染率为30.0%,主要以HPV11为主;单一感染阳性率为34. 1%,而混合型感染高达65. 9%,且两者均以HPV16型和HPV18型为主。宫颈炎患者HPV16型、HPV18型及HPV16 ＋ HPV18型的检出率明显低于宫颈鳞癌和宫颈腺癌患者,其中宫颈腺癌患者HPV16 ＋ HPV18型混合感染率最高。结论妇科门诊患者HPV感染率较高,宫颈癌患者HPV16及18型检出率显著高于宫颈炎患者,加强HPV高危基因型的监测有助于预警宫颈癌尤其是宫颈腺癌的发生。     

Up-Regulation of miR-21 Is Associated with Cervicitis and Human Papillomavirus Infection in Cervical Tissues

MicroRNA-21 (miR-21) is recognized as an oncomir and shows up-regulation in many types of human malignancy. The aim of this study was to investigate the association of miR-21 expression associated with HPV infection in normal and abnormal cervical tissues. Cervical tissue samples with different cytological or histopathological grades were investigated for HPV by PCR and for miR-21 and programmed cell death, protein 4 (PDCD4) expression using quantitative real-time PCR (qRT-PCR). Laser capture microdissection (LCM) of stromal and epithelial tissues and in situ hybridization (ISH) using locked nucleic acid (LNA) probes were performed on a subset of fixed specimens. Cell line experiments were conducted on fibroblasts stimulated in culture media from HeLa cells, which were then assessed for miR-21, PDCD4, IL-6 and α-SMA expression by qRT-PCR. Twenty normal cervical cell, 12 cervicitis, 14 cervical intraepithelial neoplastic I (CIN I), 22 CIN II-III and 43 cervical squamous cell carcinoma (SCC) specimens were investigated. miR-21 levels were significantly lower in normal than in abnormal tissues. The expression of miR-21 in HPV negative normal cytology was significantly lower than in HPV positive samples in abnormal tissue and SCC. The miR-21 expression was significantly higher in HPV negative cervicitis than HPV negative normal cells. LCM and ISH data showed that miR-21 is primarily expressed in the tumor-associated stromal cell microenvironment. Fibroblasts treated with HeLa cell culture media showed up-regulated expression of miR-21, which correlated with increased expression of α-SMA and IL-6 and with down-regulation of PDCD4. These results demonstrate that miR-21 is associated with HPV infection and involved in cervical lesions as well as cervicitis and its up-regulation in tumor-stroma might be involved in the inflammation process and cervical cancer progression.     

CD44v6、MMP-9、VEGF在胃癌的表达及临床意义

目的:检测胃癌组织中CD44v6、MMP-9、VEGF表达情况及其与胃癌临床病理因素的关系,并探讨其表达与胃裸区侵犯的临床意义。方法:采用免疫组化方法测定60例胃癌组织CD44v6、MMP-9、VEGF表达情况,并结合患者的临床病理资料进行分析。结果:CD44v6、MMP-9、VEGF的表达与胃癌的TNM分期、浸润深度、淋巴结转移有关。胃裸区受侵组与未受侵组胃癌组织的CD44v6、MMP-9、VEGF的表达无明显差异。结论:CD44v6、MMP-9、VEGF的表达与胃癌的浸润转移密切相关,胃裸区是否受侵与胃癌组织的CD44v6、MMP-9、VEGF的表达无关,胃裸区这一解剖结构可能是胃癌预后较差的原因。     

VEGF和Survivin在肾癌中的表达及其相关性研究

目的：探讨肾癌组织中血管内皮生长因子VEGF与凋亡抑制蛋白Survivin表达的相关性及其之间的关系,研究Survivin和VEGF在肾癌发生发展中的作用机制。方法：应用免疫组织化学方法检测70例肾癌组织和70例癌旁正常肾脏组织中VEGF和Survivin的表达,并将检测结果与临床病理特征进行综合分析。结果：VEGF和Survivin在肾癌中表达均高于癌旁正常肾脏组织;Survivin和VEGF在肾癌中的阳性表达率分别为75.71%（53/70）和72.86%（51/70）,在癌旁肾脏组织中的表达率分别为0%（0/70）、17.14%（12/70）,差异均有显著性意义（P〈0.05）;VEGF和Survivin的表达与患者的性别、年龄、肿瘤大小、病理分级均无相关性;VEGF和Survivin表达呈正相关性。结论：VEGF和Survivin在肾癌组织中表达率较高,为肾癌的分子靶向治疗提供了新的靶点。Survivin和VEGF在RCC中的表达关系密切,测定RCC中Survivin、VEGF蛋白的表达,有助于临床判断病人预后。