XAF1和XIAP在卵巢上皮性癌中的表达及意义

目的探讨XAF1和XIAP在卵巢上皮性癌中的表达及意义。方法应用Western blot(26例)和免疫组化SP法检测166例卵巢上皮性癌及14例正常卵巢组织中XAF1和XIAP的表达情况,并分析与临床病理特征的相关性。结果XAF1在卵巢上皮性癌中的阳性表达率(33.1%),光密度值低于正常卵巢组织(71.4%,0.05),XAF1在FIGO分期III/IV期患者中的阳性表达率显著低于I/II期(=0.008)。而XIAP在卵巢P上皮性癌中的阳性表达率(56.0%),光密度值高于正常卵巢组织(21.4%,0.05)。结论 XIAP高表达,XAF1低表达可能与卵巢上皮性癌的发生相关。     

血管内皮生长因子C在卵巢上皮癌组织内的表达及其预后意义

目的观察血管内皮生长因子(VEGF)-C在卵巢上皮癌组织内的表达,分析VEGF-C的表达与癌临床病理特征和预后之间的关系,为临床抗淋巴管生成治疗肿瘤及评价患者预后提供理论依据。方法取人卵巢上皮癌组织蜡块78例和术后卵巢癌组织12例,免疫组化法和Western blot法观察VEGF-C在卵巢上皮癌组织内的表达情况。结果免疫组化结果显示VEGF-C蛋白主要表达于卵巢癌细胞胞浆内,VEGF-C在淋巴结转移组卵巢癌组织内的表达阳性率明显高于无淋巴结转移组(<0.01)。Western blot结果可见伴淋巴结转移卵巢癌组织内VEGF-C的表达水平高于无淋巴结转移卵巢癌组织。Kaplan-Meier和Cox回归分析表明,VEGF-C表达阴性患者的五年总体生存率和无瘤生存率均高于表达阳性患者。结论 VEGF-C表达与卵巢上皮癌淋巴结转移密切相关,可以作为判断卵巢上皮癌患者预后的新指标。     

上皮性卵巢癌中Cyclin D1和p27的表达及其临床意义

目的探讨Cyclin D1和p27蛋白在上皮性卵巢癌中的表达及其与临床病理间的关系。方法利用免疫组化S-P法测定Cyclin D1和p27蛋白在62例上皮性卵巢癌中的表达,比较Cyclin D1、p27蛋白与卵巢癌的各项临床病理指标间的关系及两者间的关系。结果在上皮性卵巢癌中,Cyclin D1蛋白的表达在FIGO分期Ⅰ-Ⅱ期低于Ⅲ-Ⅳ期,组织学G1-G2组低于G3组,术后残留癌组织≤2cm组低于〉2cm组,淋巴无转移组低于有转移组;而p27蛋白在FIGO分期Ⅰ-Ⅱ期高于Ⅲ-Ⅳ期,组织学G1-G2组高于G3组,淋巴无转移组高于有转移组,以上各组间均有统计学差异（P〈0.05）;在上皮性卵巢癌中Cyclin Dl、p27蛋白的表达呈负相关（rs=-0.255,P〈0.05）。结论CyclinDl、p27蛋白的异常表达可能与上皮性卵巢癌的发展及恶性程度有关,可作为评估上皮性卵巢癌恶性程度和预后的指标。     

LATS2基因在上皮性卵巢癌中的表达和临床意义

目的 检测人上皮性卵巢癌组织中大型肿瘤抑制因子2(LATS2)的表达与其发生、发展及临床病理参数之间的相关性.方法 用RT-PCR、SYBR Green实时定量PCR及免疫组化检测LATS2 mRNA和蛋白的表达.结果 LATS2 mRNA在上皮性卵巢癌组织中的表达量低于良性组和正常组(P＜0.01);LATS2的表达水平与组织分化程度(P＜0.05)、FIGO分期(P＜0.01)、有淋巴结转移(P＜0.01)有关.LATS2蛋白主要定位于胞质;上皮性卵巢癌LATS2的阳性表达率均低于良性组和正常组(P＜0.01);LATS2蛋白在临床晚期、组织分化低及有淋巴转移组中的阳性表达率低于临床早期、组织分化高及无淋巴结转移组(P＜0.01).结论 LATS2基因的表达水平可能与上皮性卵巢癌的发生、发展相关,对其早期诊断及预测病情进展具有一定的意义.     

Wnt2B及PAI-1在上皮性卵巢癌中的表达及临床意义

目的 通过检测Wnt2B与PAI-1在上皮性卵巢癌中的表达,分析两者与上皮性卵巢癌侵袭转移及临床病理之间的关系,以探讨两种基因在上皮性卵巢癌的表达及临床意义.方法 应用免疫组化(SP法)检测2008年1月到2013年6月在本院行手术切除的上皮性卵巢癌82例和良性卵巢上皮瘤10例患者组织中Wnt2B和PAI-1蛋白的表达情况,分析上皮性卵巢癌的年龄、组织学类型、细胞学分级、手术病理分期、肿瘤病灶大小、盆腔转移灶大小、大网膜转移、淋巴结转移、远处转移、残留病灶大小等临床病理因素与两个基因的表达关系;分析上皮性卵巢癌患者癌组织中Wnt2B与PAI-1的表达关系.结果 上皮性卵巢癌患者癌组织中Wnt2B的阳性表达率为12.2％(10/82),低于良性卵巢上皮瘤患者瘤组织的70％ (7/10)(P＜0.05);上皮性卵巢癌患者癌组织中PAI-1的阳性表达率为76.8％(63/82),高于良性卵巢上皮瘤患者瘤组织的20％ (2/10) (P＜0.05).PAI-1的表达与手术病理分期、细胞学分级、大网膜转移、盆腔转移灶大小有关(均P＜0.05),而与患者年龄、组织学类型、肿瘤病灶大小、淋巴结转移、远处转移、残留病灶大小无关(均P＞0.05);Wnt2B表达与手术病理分期、大网膜转移有关(均P＜0.05),与患者年龄、组织学类型、细胞学分级、肿瘤病灶大小、盆腔转移灶大小、淋巴结转移、远处转移、残留病灶大小无关(均P＞0.05).上皮性卵巢癌患者癌组织中Wnt2B与PAI-1的表达呈负相关(r=-0.847,P＜0.05).结论 Wnt2B在上皮性卵巢癌的发病机制中可能发挥一定的作用.PAI-1的表达与上皮性卵巢癌的发生、发展、浸润、转移有关.     

转录因子Elf-1在上皮性卵巢癌中的表达及其意义

目的探讨转录因子Elf-1在上皮性卵巢癌中的表达及其临床意义,并探讨Elf-1与卵巢癌细胞增殖的相关性。方法收集31例上皮性卵巢肿瘤组织及3例正常卵巢组织标本,采用免疫组化S-P法测定Elf-1在上皮性卵巢癌中的表达并对其表达情况进行分析。结果在23例上皮性卵巢癌组织中Elf-1阳性表达15例（65．22％）。Elf-1的表达与组织学类型有关（χ2=6．54,P〈0．05）,与患者的年龄、FIGO临床分期差异无统计学意义（χ2=0．25和0．08,P〉0．05）。Elf-1在上皮性卵巢癌中的表达与c-Fos在上皮性卵巢癌中的表达呈正相关（Kappar=0．39,P〉0．05）。结论Elf-1在上皮性卵巢癌组织中呈高水平表达,且与原癌基因c-Fos的表达呈正相关,提示Elf-1可能通过影响上皮性卵巢癌细胞的增殖而参与其发生和发展。     

转录因子 Elf-1在上皮性卵巢癌中的表达及其意义

目的 探讨转录因子Elf-1在上皮性卵巢癌中的表达及其临床意义,并探讨Elf-1与卵巢癌细胞增殖的相关性.方法 收集31例上皮性卵巢肿瘤组织及3例正常卵巢组织标本,采用免疫组化S-P法测定Elf-1在上皮性卵巢癌中的表达并对其表达情况进行分析.结果 在23例上皮性卵巢癌组织中Elf-1阳性表达15例(65.22%).Elf-1的表达与组织学类型有关(χ2=6.54,P＜0.05),与患者的年龄、FIGO临床分期差异无统计学意义(χ2=0.25和0.08,P＞0.05).Elf-1在上皮性卵巢癌中的表达与c-Fos在上皮性卵巢癌中的表达呈正相关(Kappar=0.39,P＞0.05).结论 Elf-1在上皮性卵巢癌组织中呈高水平表达,且与原癌基因c-Fos的表达呈正相关,提示Elf-1可能通过影响上皮性卵巢癌细胞的增殖而参与其发生和发展.     

Protease inhibitor SERPINA1 expression in epithelial ovarian cancer

Epithelial ovarian cancer is the most lethal gynecologic cancer with a 5 years survival rate of 30–40% in patients diagnosed with high-grade invasive disease (TOV). This is in stark contrast to the 95% 5 years survival rate in ovarian cancer patients diagnosed with low malignant potential (LMP) disease. The progression from localized tumor to invasive metastasis involves matrix proteolysis. Protease inhibitors are thought to play a key role by limiting this process. Using the Affymetrix HG-U133A GeneChip array, we have studied all serine protease inhibitors and found several serpin family members that are differentially expressed between LMP and TOV serous tumors. SERPINA1 was selected for further study due to its high expression in the majority of LMP tumors and its low expression in TOV tumors; observations that were also validated by quantitative-PCR (Q-PCR). To study the effects of its over expression on different tumorigenic parameters, SERPINA1 was cloned in the pcDNA3.1+ plasmid which was subsequently used to derive stable clones from two invasive ovarian cancer cell lines, TOV-112D and TOV-1946. We found no effect of SERPINA1 over expression on tumor growth in SCID mice although cell migration and invasion were affected in in vitro assays. There was also no association between patient survival and SERPINA1 immunostaining, however, SERPINA1 localization was different in LMP (nuclear) and TOV (cytoplasmic) tumors. SERPINA1 remains an interesting candidate since protein homeostasis, regulated by proteases and their inhibitors, should be studied holistically in order to assess their full impact in tumor progression.     

Kallikrein 4 expression is up-regulated in epithelial ovarian carcinoma cells in effusions

We immunohistochemically analyzed kallikrein 4 protein (hK4) expression in patients with epithelial ovarian carcinoma (181 malignant effusions and 103 solid carcinoma lesions). Expression of hK4 was also studied in 32 effusions using immunoblotting. Carcinoma cells expressed hK4 in 144 (79.6%) of 181 effusions and 85 (82.5%) of 103 solid tumors. Expression was seen in 51% or more of tumor cells in 70 effusions but often was limited to 5% or fewer cells in solid tumors (P = .009, primary tumors vs effusions; P = .002, metastases vs effusions). Immunoblotting showed hK4 expression in 31 of 32 specimens. Stromal cell hK4 expression, seen in 48 (46.6%) of 103 lesions, was significantly higher in primary tumors than metastases (26/43 vs 22/60, P = .019). hK4 expression in tumor cells was significantly lower in International Federation of Gynecology and Obstetrics stage IV than stage III tumors (P = .004, all lesions; P = .012, primary tumors). hK4 expression in carcinoma cells was associated with longer overall survival (not significant; P = .14, peritoneal effusions). hK4 is expressed widely in ovarian carcinoma; levels in carcinoma cells are highest in effusions, which might be related to loss of stromal contribution and/or altered microenvironment. hK4 expression in carcinoma cells of effusions or solid tumors does not predict survival.     

酪氨酸激酶受体RON在上皮性卵巢癌中的表达及其意义

目的:研究酪氨酸激酶受体 RON 在上皮性卵巢癌组织中的表达及其与临床病理学参数的关系.方法:采用逆转录聚合酶链反应和免疫组织化学方法分别检测 42 例上皮性卵巢癌新鲜组织 RON mRNA 及其对应 32 例石蜡组织中 RON蛋白的表达.结果:上皮性卵巢癌新鲜组织中 RON mRNA 阳性表达率为57.14%,对应的上皮性卵巢癌石蜡组织中 RON蛋白平均面密度值为(0.060 1±0.028 4),RON mRNA 和蛋白表达均与上皮性卵巢癌组织的临床分期、组织学分级及淋巴结转移有关.结论:RON 的过度表达与上皮性卵巢癌的进展、转移密切相关,检测 RON 的异常对判断肿瘤的临床进展及转移有一定的参考价值,RON 可能成为诊断治疗的新靶点.     

Apaf-1在甲状腺乳头状癌中的表达及意义

目的:探讨凋亡蛋白酶活化因子1(Apaf-1)在甲状腺乳头状癌(PTC)中的m RNA与蛋白表达及其与细胞增殖的关系。方法:分别采用real-time PCR、Western blot及免疫组化法检测并比较甲状腺乳头状癌和癌旁组织中Apaf-1的m RNA及蛋白表达情况,并分析其表达水平与PTC临床病理学特征的关系;通过下调CGTHW-3细胞中Apaf-1表达量,验证Apaf-1对细胞增殖的影响。结果:在PTC组织中,Apaf-1的m RNA和蛋白表达量均显著低于癌旁组织(P 0. 05);下调Apaf-1表达增强了CGTHW-3细胞的增殖活性(P 0. 05)。结论:Apaf-1在PTC中低表达,抑制其表达可增强CGTHW-3细胞的增殖能力。Apaf-1在甲状腺乳头状癌中可能发挥抑癌作用。     

The significance of caveolin-1 expression in parietal epithelial cells of Bowman's capsule

Aims: To analyse the expression of caveolin‐1 in normal human kidney and during diseases leading to nephrotic syndrome in children and to compare its pattern with those observed in control samples, both human and animal. Methods and results: The study group was composed of 104 children diagnosed with minimal change disease (MCD), focal segmental glomerulosclerosis (FSGS), lupus glomerulonephritis (LGN) and Schönlein–Henoch glomerulopathy (SH). The research protocol employed direct immunohistochemical assay with the use of mono‐ and polyclonal antibodies against caveolins. Kidney samples of Wistar rats, wild‐type mice and caveolin‐1‐deficient mice were also analysed. In the control human samples, caveolin‐1 was most abundant in the muscle layer of blood vessels and parietal epithelial cells (PECs). Its expression in PECs was significantly lower in children diagnosed with FSGS and LGN than in those with MCD, SH or in controls. In the control animal tissues, except for knock‐out mice, caveolin‐1 was present in distal convoluted tubules, PECs, endothelial cells and muscle. Conclusions: Caveolae are extremely stable elements of PECs and can be excluded from their cell membrane only in response to the dramatic cell reconstruction observed in FSGS and LGN.