CD44v6在胰腺癌组织中的表达及其临床意义

目的：探讨CD44v6蛋白表达与胰腺癌增殖及淋巴结转移的关系。方法：应用免疫组织化学（S－P）法检测38例胰腺癌组织标本中CD44v6和PCNA的表达。结果：CD44v6在胰腺癌中的阳性率为65％（25／38），与淋巴结转移呈非常显相关（P＜0．01），与胰分化程度无关（P＞0．05）。CD44v6阳性染色胰腺组织中PCNA标记率较阴性高（P＜0．05）。结论：CD44v6在胰腺癌的增殖，转移过程中可能起重要作用，可作为胰腺癌预后预测的生物学指标之一。     

CD44V6和CD44S表达与膀胱癌转移的相关性研究

采用免疫组化ＳＡＢＣ法对８１例膀胱移行细胞癌患者癌组织中细胞粘附分子ＣＤ４４ｖ６和ＣＤ４４ｓ的表达进行检测。结果显示,ＣＤ４４ｖ６的阳性表达与膀胱癌临床分期、病理分级有显著关系,伴淋巴结转移组的ＣＤ４４ｖ６阳性表达率显著低于未转移组。     

KAI1和CD44v6在骨肉瘤中的表达及意义

目的探讨KAI1和CD44v6蛋白在骨肉瘤中的表达及其与临床病理特征及预后的关系。方法应用免疫组织化学SP法,检测87例骨肉瘤组织中KAI1和CD44v6蛋白的表达,用Cox风险回归模型评价骨肉瘤患者预后独立因素。结果KAI1蛋白与肿瘤的分化程度、远处转移相关,而CD44v6仅与远处转移相关。骨肉瘤KAI1和CD44v6的表达无相关性。Cox模型分析显示影响骨肉瘤患者预后因素是KAI1表达、远处转移和Enneking外科分期。结论KAI1和CD44v6的异常表达参与了骨肉瘤的转移过程,KAI1表达、远处转移、Enneking外科分期是预测骨肉瘤患者预后的独立因素。     

结直肠癌组织中ESA和CD44的表达及其临床病理意义

目的:探讨原发性结直肠癌组织中E SA和CD44蛋白表达的关系及临床病理意义.方法:应用免疫组织化学SP法检测10例正常结直肠黏膜组织、13例伴不典型增生的结直肠腺瘤及67例结直肠癌组织中ESA和CD44的表达,并比较两者不同病理参数的相关性.结果:结直肠癌组织中ESA和CD44的表达明显高于其在正常肠黏膜组织和伴不典型增生的结直肠腺瘤中的表达( P<0.05); 在结直肠癌中,CD44的表达与淋巴结转移,分化程度及Dukes分期有关(χ2 = 8.375,14.284,7.948,均P<0.05); ESA与年龄、浸润深度、分化程度及Dukes分期有关(χ2 = 16.918,15.195,10.395,7.681,均P<0.05); ESA的表达与CD44的表达呈正相关( r = 0.614,P = 0.000).结论:ESA与CD44在结直肠癌的发生发展、浸润转移中密切相关,同步检测二者在结直肠癌组织中的表达并综合分析两者之间的关系对评价结直肠癌的侵袭转移能力判断具有一定价值.     

CD44v17在胃癌组织中的表达及其与临床生物学特性之间的关系

目的 探讨一种新的CD44变异体（CD44v17）在胃癌组织中的表达及其与临床生物学特性之间的关系.方法根据本实验室在MCF-7／Adr中新发现的1种CD44剪切拼接变异体CD44v17设计特异性引物,应用SYBR Green I荧光染料,采用实时PCR法检测87例胃癌组织及相应癌旁组织CD44v17 Mrna的表达,根据标准曲线计算CD44v17mRNA的表达量,分析CD44v17mRNA表达与胃癌临床生物学特性之间的关系.结果胃癌组织CD44v17 Mrna表达明显高于相应癌旁正常组织（P〈0.05）;肿瘤〉5 cm组CD44v17 Mrna表达与肿瘤≤5 cm组表达比较差异无显著性（P〉0.05）;未分化腺癌组表达明显高于乳头状腺癌及管状腺癌组（P〈0.05）,乳头状腺癌组CD44v17 Mrna表达与管状腺癌组比较差异无显著性（P〉0.05）;肿瘤累及浆膜及浆膜外组CD44v17 Mrna表达显著高于侵及黏膜、黏膜下层及肌层组（P〈0.05）,而肿瘤侵及黏膜及黏膜下层组的CD44v17 Mrna表达与侵犯肌层组表达比较差异无显著性（P〉0.05）.淋巴结转移组CD44v17 Mrna表达明显高于淋巴结无转移组（P〈0.05）;有肝脏转移组CD44v17 Mrna表达显著高于无肝脏转移组（P〈0.05）.结论CD44v17 Mrna在胃癌组织中高表达,可能与胃癌的侵袭、转移及预后有关.     

明胶酶、CD44v6在结直肠癌中的表达及意义

目的探讨明胶酶在结直肠癌中的表达及其CD44v6在结直肠癌侵袭转移过程中的关系。方法采用明胶酶谱（gel zymography）和S-P免疫组化对50例结直肠癌癌组织和相应正常组织中的明胶酶、CD44v6进行检测。结果明胶酶在结直肠癌中的表达水平显著高于正常组织（P〈0．05）；明胶酶与结直肠癌的Duke’s分期呈同步的正相关（P〈0．05）；明胶酶在CD44v6强阳性组中表达量升高显著（P〈0．05）。结论明胶酶与结直肠癌的侵袭转移性有着密切的关系，不仅在癌细胞的酶解，而且在癌细胞的黏附、运动过程中有可能发挥着重要作用。     

CD44蛋白在胃癌中的表达及与临床关系的探讨

目的:探讨CD44蛋白在胃癌中表达及与临床的关系。方法:采用免疫组化S-P方法检测CD44S及CD44变异体V6在54例胃良性病变(BGD)及63例胃癌(GC)中的表达,并比较了阳性表达与肿瘤组织分型及临床预后等相关性。结果:CD44S在浅表性胃炎(CSG)、萎缩性胃炎伴肠上皮化生(CAG/IM)及GC中表达阳性率分别为48.5％、57.1％和52.4％。CD44V6在CSG中无表达,在CAG/IM及GC中表达阳性率为19.1％和53.9％。在肠型胃癌中,CD44V6表达率(73.7％)明显高于弥漫型胃癌(24％)。CD44S阳性表达与组织分型无关。CD44S阳性表达与术后复发率呈正相关,与5年生存率呈负相关。结论:CD44S和CD44V6在胃癌中均有表达,CD44V6表达率与胃癌组织来源有关。CD44S表达率与临床预后有关。     

Expression of CD44 in rat liver allografts during rejection

As CD44 is believed to be a homing receptor involved in lymphoid trafficking and inflammatory responses, it is expected to be closely linked to transplant rejection. In this study, the expression of CD44 during liver transplant rejection was compared with the expression of lymphocyte-function associated antigen-1 (LFA-1) and intercellular adhesion molecule-1 (ICAM-1), which play an essential role in cell interactions and the initiation of immune responses. Male Brown Norway (BN) and Lewis (LEW) rats were used as donors and recipients, respectively. Orthotopic liver transplantation (OLTX) was done using the cuff technique of Kamada and Calne. Animals were killed on days 3, 5, and 7 after OLTX, and a piece of tissue from each of the liver grafts was obtained. Immunohistochemical staining was used to investigate the expression of CD44, ICAM-1, and LFA-1. CD44 was strongly expressed in portal areas of the rejected liver, and LFA-1 and ICAM-1 were expressed mainly on sinusoids and hepatocytes. These findings indicate that CD44 is closely involved in lymphocyte infiltration, which is dominant in portal areas, and that lymphocyte infiltration during the rejection process may involve a homing mechanism.     

CD44分子的研究现状

CD44分子是广泛表达于细胞膜上的跨膜蛋白多糖分子,是一个典型的单考贝基因多种表型的蛋白,曾经认为它的主要功能在于细胞和细胞、细胞和基质之间的相互作用,而近年来的研究表明它通过组成跨膜复合体、利用肌动蛋白和细胞骨架形成成信号级联来参与信号转导。了解炎症细胞、平滑肌细胞和肿瘤细胞上CD44分子的作用有助于我们深化对呼吸系统疾病的认识并为呼吸系统疾病研究开拓一个新的方向。     

结直肠癌组织中CD44V3,v6蛋白的表达意义

目的研究CD44v3,v6蛋白在结直肠癌组织中的表达及其预后意义.方法应用EnvisionTM免疫组化法,回顾性分析121例结直肠癌石蜡组织CD44v3,v6的表达.患者中位随访时间为67.77mo.结果CD44v3,v6在结直肠癌中的阳性率分别为60.3%和57.9%.CD44v3的阳性表达与患者肿瘤部位,淋巴结转移状况、远处转移与否、临床分期密切相关(P＜0.05,Spearman等级相关检验).CD44v6的阳性表达与患者性别、淋巴结转移状况、远处转移与否、临床分期密切相关(P＜0.05,Spearman等级相关检验).Kaplan-Meier生存曲线,Log-rank检验单因素生存分析结果显示,CD44v3阴性、阳性患者的五年生存率分别为81.25%,60.27%,两者之间存在显著性差异(P=0.035);CD44v6阴性、阳性患者的5 a生存率分别为80.39%,60.00%,两者之间亦存在显著性差异(P=0.0299).Cox模型多因素生存分析结果显示,CD44v3表达是影响结直肠癌预后的独立因素.结论CD44v3,v6蛋白与结直肠癌转移、预后相关,CD44v3是影响结直肠癌预后的独立因素.     

Expression and clinical significance of CD44V5 and CD44V6 in resectable colorectal cancer

Purpose This study was conducted to evaluate the prognostic significance of CD44v5 and CD44v6 in resectable colorectal cancer.Materials and methods Membranous CD44v5 and CD44v6 levels were measured by an immunoenzymatic assay in tumors and surrounding mucosal samples obtained from 105 patients with resectable colorectal carcinomas.Results There were no significant differences of CD44v5 levels between tumors [median: 3.2 (range: 0.9–83.5) ng/mg protein) and surrounding mucosal samples (3 (3–146.2) ng/mg protein]. However, tumor samples showed significantly higher CD44v6 levels [19.5 (2.2–562.9) ng/mg protein] than mucosal samples [5 (5–230) ng/mg protein] (P=0.0001). Patients with higher CD44v5 or CD44v6 content in tumor samples had a considerably shorter relapse-free survival (P<0.05, for both). Patients with a higher CD44v6 content also had a shorter relapse-free and overall survival in the multivariate analysis (P<0.05).Conclusion The results of this study suggest a role of CD44v5 and CD44v6 in colorectal cancer progression. Membranous CD44v levels in primary tumors, measured by immunoenzymatic assay, may contribute to a more precise prognostic estimation in patients with resectable colorectal cancer.Supported by grants from ISCIII Red de Centros de Cancer RTICCC (C03/10) and Obra Social Cajastur     

肝细胞癌CD44v6和p16基因蛋白的表达及其意义

目的探讨CD44v6和p16基因蛋白表达与肝细胞癌(HCC)转移和预后的关系。方法应用免疫组织化学方法,检测分析110例HCC组织中CD44v6及p116蛋白表达,结合随访资料分析。结果在HCC中,CD44v6和p16阳性表达率分别为42.7%和34.5%。CD44v6阳性表达的HCC转移率高(P<0.05),分化程度和患者>5年生存率低(P<0.05);p16阳性表达的HCC转移率低(P<0.05),分化程度和患者>5年生存率高(P<0.05)。CD44v6与p16表达呈负相关(r=-0.59,P<0.005)。结论CD44v6和p16表达与HCC转移和患者生存期密切相关,检测CD44v6和p16蛋白的表达可作为判断HCC预后的参考指标。     

NIV毒素和硒对软骨细胞CD_（44）代谢的影响

目的进一步探讨大骨节病（KBD）的发病机制。方法取4月龄引产胎儿软骨细胞原代分离、培养并随机分为四组。对照组不处理,加硒组加入硒浓度为0.1 mg/L,雪腐镰刀菌烯醇毒素（NIV）组加入NIV毒素使终质量浓度为0.1 mg/L,联合组加硒和NIV毒素,浓度同上。RT-PCR法检测各组CD44 mRNA在软骨细胞中的表达;流式细胞仪检测各组软骨细胞表面CD44蛋白的表达;酶联免疫吸附法检测细胞培养液中可溶性CD44（sCD44）水平。结果 NIV组、联合组软骨细胞CD44 mRNA及蛋白表达水平均明显高于对照组和加硒组（P均〈0.05）。与NIV组比较,联合组CD44表达有所降低,但不明显。NIV组细胞培养液中溶解的sCD44水平最高,其次为联合组,对照组水平最低。结论 NIV毒素和硒能影响软骨细胞CD44的代谢,这可能是造成软骨细胞损伤的机制。     

CD44与肺癌关系的研究进展

CD44属于未分类的黏附分子,具有参与同周围细胞和细胞间质成分的黏附作用;参与信号转导,影响细胞迁移与增殖等多种生物学功能。其在肿瘤的发生、发展和转移中起着重要的作用,查明CD44与肺癌之间的关系,对肺癌的诊断、治疗以及判断预后有一定意义。     

Expression of CD44 in articular cartilage is associated with disease severity in knee osteoarthritis

Abstract

Objectives To investigate CD44 levels in articular cartilage of knee osteoarthritis (OA) and the relationship between CD44 and severity of the disease.

Methods All 50 cartilage tissues included normal and OA cartilage, and were ascribed to the following four groups on the basis of modified Mankin score: normal, mild lesions, moderate lesions and severe lesions. CD44 levels in articular cartilage were assessed by immunohistochemical methods.

Results CD44 levels were detected in all four groups. The difference in average gray value of CD44 expression showed statistical significance when compared between each group (P < 0.05). In addition, CD44 expression in each group correlated with disease severity, according to the modified Mankin score (ρ = ?0.848, P < 0.01).

Conclusions CD44 in articular cartilage is associated with progressive knee OA joint damage.     

Expression and significance of CD44s, CD44v6, and nm23 mRNA in human cancer

AIM: To investigate the relationship between the expression levels of nm23 mRNA, CD44s, and CD44v6,and oncogenesis, development and metastasis of human gastric adenocarcinoma, colorectal adenocarcinoma,intraductal carcinoma of breast, and lung cancer.METHODS: Using tissue microarray by immuhistochemical (IHC) staining and in situ hybri-dization (ISH), we examined the expression levels of nm23mRNA, CD44s, and CD44v6 in 62 specimens of human gastric adenocarcinoma and 62 specimens of colorectal adenocarcinoma; the expression of CD44s and CD44v6in 120 specimens of intraductal carcinoma of breast and 20 specimens of normal breast tissue; the expression of nm23 mRNA in 72 specimens of human lung cancer and 23 specimens of normal tissue adjacent to cancer.RESULTS: The expression of nm23 mRNA in the tissues of gastric and colorectal adenocarcinoma was not significantly different from that in the normal tissues adjacent to cancer (P＞0.05), and was not associated with the invasion of tumor and the pathology grade of adenocarcinoma (P＞0.05). However, the expression of nm23 mRNA was correlated negatively to the lymph node metastasis of gastric and colorectal adenocarcinoma (r = -0.49, P＜0.01; r = -4.93, P＜0.01). The expression of CD44s in the tissues of gastric and colorectal adenocarcinoma was significantly different from that in the normal tissues adjacent to cancer (P＜0.05;P＜0.01). CD44v6 was expressed in the tissues of gastric and colorectal adenocarcinoma only, the expression of CD44v6 was significantly associated with the lymph node metastasis, invasion and pathological grade of the tumor (r = 0.47, P＜0.01; r = 5.04, P＜0.01). CD44sand CD44v6 were expressed in intraductal carcinoma of breast, the expression of CD44s and CD44v6 was significantly associated with lymph node metastases and invasion (P＜0.01). However, neither of them was expressed in the normal breast tissue. In addition, the expression of CD44v6 was closely related to the degree of cell differentiation of intraductal carcinoma of breast (x2= 5.68, P＜0.05). The expressional level of nm23mRNA was closely related to the degree of cell differentiation (P＜0.05) and lymph node metastasis (P＜0.01), but the expression of nm23 gene was not related to sex, age, and type of histological classification (P＞0.05).CONCLUSION: Patients with overexpression of CD44s and CD44v6 and low expression of nm23 mRNA have a higher lymph node metastatic rate and invasion. In addition, overexpression of CD44v6 is closely related to the degree of cell differentiation. Detection of the three genes is able to provide a reliable index to evaluate the invasion and metastasis of tumor cells.     

胃癌组织α-连环素和CD44v6表达的检测和意义

目的 研究胃癌组织和癌旁正常胃黏膜组织α-连环素和CD44v6的表达，以探讨它们的表达异常与胃癌病人的临床和病理特征的关系。方法采用免疫组化的方法半定量地检测胃癌组织和胃癌的癌旁正常黏膜这两种细胞黏附分子的表达情况并将二者的表达情况和胃癌病人的临床和病理特征进行比较。结果部分胃癌组织中α-连环素表达减少或消失，而在正常黏膜中α-连环素均正常表达。α-连环素的表达异常与胃癌病人的性别、年龄、胃癌的部位无明显相关性（P〉0．05），与胃癌组织的病理分级及远处转移有相关性（P〈0．05）。在正常胃黏膜中CD44v6无表达，而在部分胃癌组织中CD44v6呈阳性表达，二者差异具有显著性（P〈0．005）。CD44v6的表达上调与胃癌病人的性别、年龄、胃癌的部位及病理分级无明显厢关性（P〉0．05），与理处转移呈正相关（P〈0．05）。胃癌组织中α-连环素和CD44v6的表达呈负相关（P〈0．05）。结论胃癌组织中α-连环素和CD44v6有异常表达；胃癌的远处与原转移发肿瘤组织中α-连环素和CD44v6的异常表达有关；α-连环素和CD44v6的异常表达参与了肿瘤的转移过程。