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.     

Relationship between expression of CD44v6 and nm23-H1 and tumor invasion and metastasis in hepatocellular carcinoma

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大肠癌组织RAB5A和CD44v9表达的意义

目的:探讨大肠癌组织RAB5A和CD44v9表达的意义．方法:应用SP免疫组化法检测43例大肠癌病理蜡块中RAB5A和CD44v9的蛋白质表达;取 60例大肠癌患者新鲜组织标本,提取RNA并逆转录合成cDNA,应用Real-time PCR法检测组织样本中RAB5A和CD44v9的基因表达;分析CD44v9和RAB5A的基因与蛋白质表达量与大肠癌分化及转移程度的相关性．结果:RAB5A蛋白表达阳性率为100％,阳性表达位于胞质和胞膜;CD44v9表达阳性率为 86．7％,阳性表达位于胞质;荧光定量PCR结果经熔解曲线分析各样本扩增产物的Tm值一致并与阳性对照的Tm值吻合．RAB5A cDNA 的表达量在高分化和中分化大肠癌组织中低于低分化大肠癌组织(P<0．01),在无淋巴结转移的大肠癌组织中低于有淋巴结转移的组织(P<0．01),而CD44v9 cDNA的表达趋势与 RAB5A相同;RAB5A与CD44v9的蛋白和基因表达均呈正相关(x2=14．532,P<0．01)．结论:RAB5A和CD44v9的表达与大肠癌的分化和转移有关,可能在跨膜信号传导和基质侵袭中共同发挥作用．     

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。     

VEGF和CD44v6过表达与乳腺癌浸润转移的关系

目的检测血管内皮生长因子(VEGF)和转移相关黏附分子44v6(CD44v6)在乳腺癌中的表达情况,探讨两者与淋巴结转移的关系。方法采用免疫组化SP法检测92例乳腺浸润性癌中VEGF、CD44v6的表达情况。结果 VEGF在正常乳腺组织和乳腺癌中的阳性表达率分别为6.7%(3/45)和90.2%(83/92),且VEGF在淋巴结转移组中的阳性表达率(53/55)明显高于无淋巴结转移组(P<0.05)。CD44v6在正常乳腺组织及乳腺癌中的阳性表达率分别为8.9%(4/45)和85.9%(79/92),而且CD44v6在淋巴结转移组中的阳性表达率(51/55)明显高于无淋巴结转移组(P<0.05)。VEGF和CD44v6表达呈正相关关系(r=0.497,P<0.05)。结论 VEGF、CD44v6在乳腺癌组织中高表达,且均与淋巴结转移有关(P<0.05),两者可能在乳腺癌的远处转移中起协同作用。     

Expression of two CD44 variant proteins (v3 and v6 ) in human colorectalcarcinoma and its relevance for prognosis

AIM To evaluate the expression of CD44v3 and v6 protein in colorectal carcinoma and its prognosticsignificance.METHODS One hundred and twenty-one cases of formalin-fixed paraffin-embedded colorectal carcinomaspecimens were retrospectively analyzed using EnvisionTM immunohistochemical method with the monoclonalantibody CD44v3 and v6. The median follow-up time was 67.77 months and the prognostic value of theCD44v3 and CD44v6 was assessed using univariate and multivariate survival analysis.RESULTS The positive rates of CD44v3 and v6 protein were 60.3% and 57.9%, respectively. There wassignificant correlation between CD44v3 immunoreactivity and tumor location, lymph node metastasis, distantmetastasis and Duke's stage (P< 0.05, Spearman correlation test). Significant correlation between CD44v6immunoreactivity and patients' gender, lymph node metastasis, distant metastasis, Duke's stage was alsonoticed (P < 0.05, Spearman correlation test). The 5-year survival rates were 81.25% and 60.27% inCD44v3 negative and positive cases, respectively. As CD44v6, the 5-year survival rates were 80.39% and60.00% in CD44v6 negative and positive cases, respectively; these differences between the two groups ofpatients were significant (P<0.05, Log-rank test). In multivariate analysis using the Cox regression model,CD44v3 expression emerges as an independent prognostic indicator.CONCLUSION CD44v3 and v6 might play some important roles in metastasis of colorectal carcinoma, andCD44v3 expression might be a new useful independent prognostic marker of colorectal carcinoma.     

胆囊癌组织中CD44v6和nm23的表达及其意义

目的研究胆囊癌组织中CD44v6、nm23蛋白表达及意义和两者之间的关系。方法用免疫组化的方法检测 36例胆囊癌和27例癌旁上皮组织中CD44v6和nm23蛋白的表达。结果胆囊癌组织中CD44v6和nm23的阳性率分别为41.7％和72.2％,均与癌旁上皮的阳性率有显著性差异:CD44v6的表达与胆囊癌的淋巴结转移呈正相关,而与组织学类型、临床分期无关;nm23的表达与胆囊癌的淋巴结转移、临床分期呈负相关,而与组织学类型无关。CD44v6和nm23蛋白的表达呈负相关。结论 CD44v6和nm23蛋白可能在胆囊癌的形成、淋巴结转移和病程进展等方面起着重要作用,且两者呈互相拮抗的关系,可作为判断胆囊癌侵袭和淋巴结转移的标记物。     

胃癌及淋巴结转移灶中CD44v6和上皮钙粘素的表达及其意义

目的 :探讨 CD4 4 v6和上皮钙粘素 (E- cd)在胃腺癌及淋巴结转移灶中的表达及其意义。方法 :应用免疫组化 SABC法检测 2 0例正常胃粘膜 ,2 0例异形增生 ,185例胃癌原发灶及 10 9例淋巴结转移灶中 CD4 4 v6和 E- cd表达。结果 :CD4 4 v6和 E- cd在异型增生、胃癌原发灶及淋巴结转移灶中阳性表达率分别为 2 0 .0 0 % (4/ 2 0 )、66.4 9% (12 3 / 185 )和87.18% (10 2 / 10 8)以及 85 .0 0 % (17/ 2 0 )、5 2 .97% (98/ 185 )和 2 6.5 0 % (3 1/ 117)。三者之间有显著差异 (P<0 .0 1)。CD4 4 v6表达率与胃癌生长方式、组织学类型、血管淋巴管内浸润及 TNM分期无关。 E- cd阳性表达与胃癌生长方式、组织学类型及 TNM分期显著相关。早期肠型胃癌 CD4 4 v6阳性表达率显著高于弥漫型 (P<0 .0 5 ) ,在进展期胃癌则无显著差异。E- cd的阳性表达率下降主要见于弥漫型胃癌。结论 :CD4 4 v6和 E- cd阳性表达同胃癌分化及生物学行为密切相关 ,是预测其侵袭转移有价值的指标。同时 ,此结果也支持胃癌两种不同起源的假说。     

原发性肝细胞癌中CD44v6和nm23H1基因的转录表达及临床意义

研究CD44v6 mRNA和nm23H1 mRNA表达与肝细胞癌（HCC）侵袭转移和预后的关系。应用原位杂交方法，检测分析HCC组织中CD44v6 mRNA和nm23H mRNA表达。99例HCC中，CD44v6 mRNA和nm23H1 mRNA表达阳性率分别为41．4％和76．8％。CD44v6mRNA表达与nm23H1mRNA表达呈负相关。CD44v6和nm23HmRNA表达均与HCC侵袭转移倾向和预后相关。检测CD44v6和nm23H1表达有可能成为HCC 侵袭转移和预后判断的病理生物学指标。     

胃癌及癌前病变组织中CD44v6表达的意义

目的探讨CD44v6基因表达与胃癌发生及胃癌生物学行为的关系.方法应用抗CD44v6蛋白的单克隆抗体,采用免疫组化ABC方法对正常胃粘膜(n=10)、各级胃粘膜异型增生(轻度n=16,中度n=12,重度n=14)、早期胃癌(n=16)及进展期胃癌(n=52)进行研究,并与胃癌类型、大小、有无淋巴结转移等作了比较分析.结果正常胃粘膜CD44v6为阴性,随着胃粘膜病变的进展,CD44v6蛋白的表达率逐渐升高,至进展期胃癌,表达率达到顶峰.轻、中、重度异型增生表达率分别为12%,33%,43%;早期胃癌及进展期胃癌的表达率分别为44%和73%.各级异型增生表达率之间的差异无显著性,而进展期胃癌表达率显著高于早期胃癌(P＜0.05),淋巴结转移组的表达率显著高于淋巴结未转移组(82%vs56%,P＜0.05),肠型胃癌的表达率高于弥漫型胃癌(78%vs56%,P＜0.05),CD44v6蛋白的表达与胃癌肿块大小无相关性.结论胃粘膜重度异型增生在CD44v6基因表达上已具有明显的潜在恶性趋势,CD44v6基因表达阳性的胃癌具有更强的浸润及淋巴结转移的能力.     

Clinical significance of serum levels of CD44 variant exons 8–10 protein in colorectal cancer

We examined serum levels of a CD44 splice variant that contained variant exons 8–10 (CD44v8–10) as a tumor marker in colorectal cancer patients. We performed enzyme-linked immunosorbent assays in 81 sera obtained from 71 colorectal cancer patients and 10 healthy controls. Serum CD44v8–10 levels were significantly higher in the colorectal cancer patients than in the healthy controls (0.209 ± 0.098 versus 0.114 ± 0.019 OD; P < 0.01). There was a close correlation between immunohistochemical expression and serum CD44v8–10 levels. Surgical resection of the tumors resulted in a reduction of serum CD44v8–10 levels. There was no significant correlation between serum CD44v8–10 level and serosal invasion or histologic type. However, a significant correlation was observed between serum CD44v8–10 level and lymphatic or venous invasion. In addition, serum CD44v8–10 levels were significantly higher in carcinomas associated with lymph node or liver metastasis than in those without metastasis. These findings suggest the usefulness of serum CD44v8–10 level in the prediction of colorectal cancer metastasis. (Received July 25, 1997; accepted Nov. 28, 1997)     

黏附分子CD44变异剪接体6在甲状腺肿瘤中的表达及其临床意义

目的　探讨CD44变异剪接体 6(CD44V6 )在甲状腺肿瘤组织的表达情况及其与肿瘤发生、发展、浸润和转移的关系。方法　采用免疫组织化学S P法检测 2 0例癌旁甲状腺组织 ,2 4例甲状腺腺瘤和 64例甲状腺癌的石蜡标本CD44V6 表达水平。结果　CD44V6 在甲状腺腺癌的表达率 ( 92 19%)显著高于甲状腺腺瘤者 ( 5 8 3 3 %,P <0 0 1) ,癌旁甲状腺组织未见表达。甲状腺中不同组织来源的滤泡细胞癌和髓样癌的CD44V6 表达差异具有显著性 ,总阳性率分别为 96 5 5 %及 5 0 0 %(P <0 0 1)。但CD44V6 表达水平在乳头状腺癌和滤泡型腺癌间差别无显著性 (P >0 0 5 )。同时发现 2例未分化癌CD44V6 表达均呈强阳性。CD44V6 的表达水平与甲状腺癌的包膜浸润和淋巴结转移有关 ,CD44V6 表达水平在包膜浸润组和未浸润组之间 ,在淋巴结转移组和非转移组之间差别有显著性 (P <0 0 1)。CD44V6 表达与患者年龄、性别、肿瘤的大小无关 (P >0 0 5 )。结论　CD44V6 的表达与甲状腺肿瘤的分化和浸润、转移显著相关 ,检测CD44V6 有助于甲状腺癌的诊断、判断预后并可能为甲状腺癌的手术和术后综合治疗决策提供新的分子生物学指标。     

胃癌中CD15s抗原和CD44v6基因蛋白的表达及其意义

[目的 ]探讨唾液酸化的路易斯寡糖 X(CD15s)抗原和CD4 4v6基因蛋白表达与胃癌临床病理指标和患者预后的关系。 [方法 ]应用高敏感性的催化信号放大免疫组化技术 ,对早期胃癌 17例、中期胃癌 2 1例和晚期胃癌5 7例组织进行CD15s抗原和CD4 4v6蛋白检测 ,并结合肿瘤的病理学指标和临床随访资料进行分析。 [结果 ]在胃癌中 ,CD15s和CD4 4v6的表达阳性率分别为 86 .3%和 82 .1%。且晚期胃癌明显高于早、中期胃癌 (P <0 .0 5 )。CD15s和CD4 4v6表达水平具有一致性 ,均与胃癌浆膜浸润、淋巴结转移和患者预后呈正相关 (P <0 .0 5 )。 [结论 ]CD15s和CD4 4v6表达与胃癌转移和患者生存期密切相关 ,检测CD15s和CD4 4v6的表达可作为判断胃癌预后的参考指标。     

CD44s mRNA在胃癌组织中的表达及其临床意义

目的探讨CD44s mRNA在胃癌组织中的表达及其临床意义。方法采用核酸原位杂交技术检测66例胃癌（胃癌组）、25例浅表性胃炎（胃炎组）和25例胃上皮不典型增生（增生组）中CD44s mRNA的水平。结果胃炎组无阳性表达;增生组中阳性率为20％;在胃癌组中阳性率为62．12％,胃癌组低分化组织中阳性率明显高于高分化组织（P〈0．05）,有淋巴结转移组阳性率明显高于无淋巴结转移组（P〈0．05）。结论CD44s mRNA表达与胃癌组织分化程度和转移有相关性;CD44s mRNA基因水平可作为判断胃癌病情和预后的指标。     

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。     

Expression of human chorionic gonadotropin, CD44v6 and CD44v4/5 in esophageal squamous cell carcinoma

AIM: To study the relationship between the expression of human chorionic gonadotropin (HCG), CD44v6, CD44v4/5 and the infiltration, metastasis of esophageal squamous cell carcinoma. METHODS: By labeled streptavidin-biotin technique, the expressions of HCG, CD44v6, and CD44v4/5 in 42 patients with esophageal squamous cell carcinoma were examined. RESULTS: The positive rate of HCG expression in patients with lymph node metastasis was 85.71% (18/21), higher than that (57.14%, 12/21) in those without lymph node metastasis (P<0.05). The positive rate of CD44v6 expression was 71.43% (15/21) in lymph node metastasis group, and 38.09% (8/21) in non-metastasis group; there was a significant difference between the two groups (P<0.05). The positive rate of CD44v4/5 expression was 76.19% (16/21) in lymph node metastasis group, and 42.86% (9/21) in non-metastasis group; there was also a significant difference between them (P<0.05). From grade Ⅰ to grade Ⅲ in differentiation, the positive rate of HCG expression was 84.62% (11/13), 70.59% (12/17) and 58.33% (7/12), respectively; there was no significant difference among them (P<0.05). The positive rate of CD44v6 expression in grades Ⅰ-Ⅲ of cancer tissues was 76.92% (10/13), 52.94% (9/17), and 33.33% (4/12) respectively; there was no significant difference among them. The positive rate of CD44v4/5 expression in grades Ⅰ-Ⅲ of cancer tissues was 69.23% (9/13), 64.71% (11/17), and 41.67% (5/12) respectively; there was no significant difference among the three groups. There was no correlation between the positive rates of HCG and CD44v6, CD44v4/5 expression. Cancer cells in carcinomatous emboli and those infiltrating into vascular wall strongly expressed HCG, CD44v6, and CD44v4/5. CONCLUSION: Expression of HCG, CD44v6, and CD44v4/5 in esophageal squamous cell carcinoma is related to its infiltration and metastasis. HCG, CD44v6, and CD44v4/5 have different effects on the infiltration and metastasis of esophageal squamous cell carcinoma.     

CD44v6和MMP-9在胎盘原位滋养细胞肿瘤中的表达及相关性

目的探讨CD44v6和基质金属酶-9（MMP-9）在胎盘原位滋养细胞肿瘤（PSTT）中的表达及相关性。方法采用SABC免疫组化法检测30例正常绒毛、15例PSTT的CD44v6和MMP-9表达情况。结果CD44v6在正常胎盘绒毛、良性PSTT、恶性PSTT的阳性表达率分别是3．3％、30．3％、100％,组间比较差异有统计学意义（P〈0．05）;而MMP-9的阳性表达率分别为6．7％、38．5％、100％,组间比较差异有统计学意义（P〈0．05）。结论CD44v6和MMP-9的过表达促进PSTT的浸润转移,二者具有正协同作用,联合检测CD44v6和MMP-9蛋白可作为PSTT的浸润转移及评价预后生物学指标。     

胃癌患者血清及癌组织中CD44v6表达及意义

[目的]检测胃癌患者血清及胃癌组织中CD44v6的表达及其与胃癌临床病理特征间的关系,进一步阐述CD44v6在胃癌发生发展中的作用。[方法]收集40例经病理证实的胃癌患者,20例正常健康体检者为对照组,20例取自距癌组织边缘5cm以上癌旁胃黏膜标本。采用双抗体夹心-酶联免疫吸附法检测40例胃癌患者术前和20例正常健康者血清中CD44v6水平,免疫组化SP法测定40例经手术切除的胃癌组织标本和20例癌旁胃黏膜标本中CD44v6的表达。[结果]①胃癌患者血清中CD44v6[(177.21±46.48)μg/L]高于正常健康者(P<0.01)。②癌组织中CD44v6的阳性表达率为77.5%,显著高于癌旁胃黏膜中的表达(P<0.01),CD44v6在血清和组织中的表达随组织学分级、临床分期的增高及有无淋巴结转移而升高,呈正相关性。[结论]CD44v6参与了胃癌的发生,并且可反映机体肿瘤的负荷状态及预测肿瘤的进展;检测CD44v6的血清含量可能为胃癌的诊断提供依据。