摘要
目的 研究大肠癌中CD44 V6 蛋白的表达及其对大肠癌进展和转移的影响。方法 收集大肠癌新鲜组织标本52 例( 其中包括无转移病例的原发灶29 例及有转移的淋巴结23 例) 、腺瘤性息肉16 例及正常大肠粘膜组织11 例。应用LSAB 免疫组织化学染色技术检测上述各种组织中CD44 V6 的表达。结果 无转移大肠癌癌灶中的CD44 V6 的阳性表达率为51 .7 % (15/29) ,转移灶中的CD44 V6 表达率为87 .0 % (20/23) ,腺瘤性息肉为18 .8 % (3/16) ,而正常大肠粘膜组织为无阳性表达(0/11) 。大肠癌组织中CD44 V6 的阳性表达率较腺瘤性息肉( P< 0 .01) 和正常大肠粘膜组织( P < 0 .01) 为高,淋巴结转移癌CD44 V6 阳性表达率较无转移的原发癌明显为高( P< 0 .01) ,同时发现大肠癌中CD44 V6 的阳性表达率与肿瘤分化程度、大体类型、大小和部位无关。结论 对大肠癌组织进行CD44V6 蛋白的检测,有助于预测其进展程度和对淋巴结转移的诊断。
Objective To evaluate the expression of CD44 splice variant V 6 in colorectal cancer and its role in the estimation of tumor progression and metastasis.Methods The expression of CD44V6 protein was determined immunohistochemically in 52 surgically resected colorectal cancer specimens(29 Non Metastatic primary tumors and 23 metastatic lymph nodes)、16 adenomatous polyps and 11 normal colonic mucosae using murine exon V 6 specific monoclonal antibody.Results The positive rate of CD44V6 immunoreactivity was 51.2%(15/29)、87.0%(20/23)、18.8%(3/16)、0(0/11) in non metastatic cancer、metastatic lymph nodes、adenomatous polyps and normal colonic tissue respectively.The positive rate of CD44V6 immunoreactivity in colorectal carcinomas was higher than that in normal tissue( P <0.01) and adenomatous polyps( P <0.01).Simultaneously the positive rate of CD44V6 immunoreactivity in metastatic lymph nodes was higher than that in non metastatic cancer( P <0.01).However,the expression of CD44V6 was not related with histological type、location and size of tumor( P >0.05).Conclusion Determination of CD44V6 protein might be useful in assessing tumor progression and 1ymphatic metastasis.
出处
《实用癌症杂志》
2000年第1期65-67,共3页
The Practical Journal of Cancer
关键词
大肠癌
CD44V6
癌转移
Colorectal carcinoma
CD44 protein
Cancer metastasis