摘要
目的:研究细胞外基质金属蛋白酶诱导因子(EMMPRIN)和基质金属蛋白酶-2(MMP-2)蛋白表达与鼻咽癌淋巴结转移的关系。方法:免疫组化法检测鼻咽慢性炎症组、无转移组鼻咽癌、转移组鼻咽癌原发灶及其颈部淋巴结转移灶内EMMPRIN与MMP-2蛋白的表达。结果:1)EMMPRIN蛋白在慢性炎症组、无转移组鼻咽癌、转移组鼻咽癌原发灶及其颈部淋巴结转移灶的表达阳性率分别为13.3%(2/15)、30.0%(6/20)、66.7%(22/33)和81.8%(27/33),在慢性炎症组与转移组鼻咽癌原发灶间、无转移组与转移组鼻咽癌原发灶间、转移组鼻咽癌原发灶与淋巴结转移灶间的差异均有显著性(P均≤0.01),而且转移组鼻咽癌原发灶及颈部淋巴结转移灶内EMMPRIN表达强度均强于无转移组(P均<0.05);2)MMP-2蛋白在鼻咽慢性炎症组、无转移组鼻咽癌、转移组鼻咽癌原发灶及颈部淋巴结转移灶表达阳性率分别为13.3%(2/15)、35.0%(7/20)、60.6%(20/33)、72.7%(24/33),在慢性炎症组与转移组鼻咽癌原发灶间、转移组鼻咽癌原发灶与颈部淋巴结转移灶间的差异有显著性(P均<0.01);3)鼻咽癌组织内EMMPRIN与MMP-2的蛋白表达呈正相关(rs=0.466,P<0.01)。结论:EMMPRIN蛋白的过度表达是鼻咽癌淋巴结转移发生的重要因素,可作为预测判断鼻咽癌发生淋巴结转移的重要参考指标之一;MMP-2蛋白的过度表达是促进鼻咽癌转移的重要因素。
Objective: To evaluate the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) and matrix metalloproteinase-2 (MMP-2) in nasopharyngeal carcinoma (NPC) and their relationship with cervical lymph node metastasis. Methods: Immunohistochemical staining was used to detect the expression of EMMPRIN and MMP-2 in chronic nasopharyngitis (CN), non-metastatic NPC (NM-NPC) and lymph node metastatic NPC (LNM-NPC). Results: a) The positive rate of EMMPRIN expression in CN, NM-NPC and LNM-NPC were 13.3% (2/15), 30.0% (6/20) and 66.7% (22/33), respectively. Significant difference was found between CN and LNM-NPC (P〈0.01), and NM-NPC and LNM-NPC (P=0.01), but not between CN and NM-NPC. Higher EMMPRIN expression was found in lymph node metastatic NPC than in primary NPC of the nasopharynx (81.8% versus 66.7%) as seen in paired comparisons (P=0.01). The percentage of positive EMMPRIN expression increased significantly in LNM-NPC compared to NM-NPC (P〈0.05); b) The positive rate of MMP-2 expression in CN, NM- NPC and LNM-NPC was 13.3% (2/15), 35.0% (7/20) and 60.6% (20/33), respectively. Significant difference was found between CN and LNM-NPC (P〈0.01). Higher MMP-2 expression was also tbund in LNM-NPC than in primary NPC (72.7% versus 60.6%) as seen in paired comparisons (P 〈0.01); c) The expression of MMP-2 significantly correlated with the expression of EMMPRIN in NPC ( rs=0.466, P〈0.01) . Conclusions: The overexpression of EMMPRIN plays an important role in promotion of NPC metastasis to cervical lymph nodes and can be used as a predictive indicator for NPC lymphatic metastasis. MMP-2 is also an important factor that promotes NPC metastasis.
出处
《中国肿瘤临床》
CAS
CSCD
北大核心
2006年第17期974-977,共4页
Chinese Journal of Clinical Oncology
基金
广东省科技计划基金(编号:2002C30316)
广东省医学科学技术研究基金项目资助(编号:A2002422)
关键词
鼻咽肿瘤
肿瘤转移
细胞外金属基质蛋白酶诱导因子
金属蛋白酶
免疫组化
Nasopharyngeal neoplasms Tumor metastasisExtracellular matrix metalloproteinase inducer (EMMPRIN)Matrix metalloproteinase-2 (MMP-2) Immunohistochemistry