ADAM17、EGFR和Ki—67在脑胶质瘤中的表达及意义
2016-10-19呼铁民孙影卢庆韬
呼铁民 孙影 卢庆韬



[摘要] 目的 探討解聚素-金属蛋白酶(ADAM17)、表皮生长因子受体(EGFR)和Ki-67在胶质瘤中的表达及其临床意义。 方法 选取2010年1月~2013年12月承德医学院附属医院收治的69例患者的手术切除标本,其中脑外伤手术减压的脑组织9例为对照组, I~II级恶性胶质瘤23例为低度恶性组, III~IV级恶性胶质瘤37例为高度恶性组;采用免疫组化法检测ADAM17、EGFR和Ki-67在3组标本中的表达情况,并分析ADAM17、EGFR和Ki-67与脑胶质瘤恶性程度的相关性及三者之间表达的相关性。 结果 ADAM17、EGFR和Ki-67在正常对照组中不表达或弱阳性表达,ADAM17、EGFR和Ki-67在低度恶性组中阳性表达率分别为56.5%(13/23)、39.1%(9/23)和26.1%(6/23),ADAM17、EGFR和Ki-67在高度恶性组中阳性表达率分别为94.6% (35/37)、73.0%(27/37)和86.5%(32/37)。随着恶性程度的提高,ADAM17、EGFR和Ki-67的阳性表达率均显著增高(P < 0.01)。相关性分析表明ADAM17和EGFR、Ki-67和ADAM17及Ki-67和EGFR之间比较差异有高度统计学意义(P < 0.01)。 结论 ADAM17、EGFR和Ki-67与脑胶质瘤的恶性度密切相关,三者联合检测有助于胶质瘤恶性程度分级的判断。
[关键词] 脑胶质瘤;解聚素-金属蛋白酶17;表皮生长因子受体;Ki-67
[中图分类号] R739.41 [文献标识码] A [文章编号] 1673-7210(2016)02(b)-0021-04
Expression and clinical cignificance of ADAM17, EGFR and Ki-67 in Glioma
HU Tiemin1,2 SUN Ying1▲ LU Qingtao3
1.Department of Pathology, Basic Medical Science College, North China University of Science and Technology, Hebei Province, Tangshan 063000, China; 2.Department of Neurosurgery, the Affiliated Hospital of Chengde Medical College, Hebei Province, Chengde 067000, China; 3.Department of Surgery, Tangshan Railway Hospital, Hebei Province, Tangshan 063000, China
[Abstract] Objective To explore expression and clinical significance of ADAM17, EGFR and Ki-67 in human glioma. Methods 69 surgical samples were selected in the Affiliated Hospital of Chengde Medical College from January 2010 to December 2013, including 9 cases of brain tissue from brain trauma after surgery decompression (control group), 23 cases of low grade glioma (low grade group) and 37 cases of high grade glioma (high grade group). Expression of ADAM17, EGFR and Ki-67 were detected in all samples by immunohistochemical staining. The correlation between expression of ADAM17, EGFR and Ki-67 and the malignant degree of glioma were analyzed. Furthermore, the correlation between ADAM17 and EGFR, ADAM17 and Ki-67, as well as EGFR and Ki-67 in glioma were analyzed. Results There was negative expression or weak expression of ADAM17, EGFR and Ki-67 in the control group. The positive expression rate of ADAM17, EGFR and Ki-67 was 56.5% (13/23), 39.1% (9/23) and 26.1% (6/23) in low grade group respectively. The positive expression rate of ADAM17, EGFR and Ki-67 was 94.6% (35/37), 73.0% (27/37) and 86.5% (32/37) in high grade group respectively. The positive expression rate of Ki-67, EGFR and ADAM17 increased significantly with the increase of malignancy degree (P < 0.01). Correlation analysis showed positive correlation between EGFR and EGFR, Ki-67 and ADAM17, Ki-67 and ADAM17 (P < 0.01). Conclusion ADAM17, EGFR and Ki-67 are closely related to the malignant degree of glioma. The combined detection of thse markers is helpful to classify the malignant degree of glioma.
[Key words] Gliom; Adisintegrin and metalloprotease 17; Epidermal growth factor receptor; Ki-67
脑胶质瘤是颅内最常见的肿瘤,呈浸润性生长,具有恶性度高、易复发、治疗效果差的特点[1]。表皮生长因子受体(epidermal growth factor receptor,EGFR)是一种具有酪氨酸蛋白激酶活性的膜受体,与配体结合后酪氨酸残基发生磷酸化,激活细胞内信号传导通路,诱导肿瘤细胞增殖和侵袭[2]。解聚素-金属蛋白酶17(adisintegrin and metalloprotease 17,ADAM17)是近年来新发现的一种基因,属于ADAM家族。ADAM17具有蛋白剪切酶样作用,在多种恶性肿瘤中都呈异常表达,参与肿瘤细胞的增殖、侵袭等行为[3]。最新研究表明ADAM17可通过剪切EGFR使其活化[4]。本研究前期显示ADAM17在脑胶质瘤组织中表达增高,但ADAM17与EGFR在胶质瘤中的关系及意义目前并不清楚。Ki-67是一种细胞增殖相关核蛋白,可反映肿瘤细胞增殖活性。……
