华西口腔医学杂志

• 基础研究 •    下一篇

基质金属蛋白酶及其组织抑制剂表达失衡与涎腺恶性肿瘤浸润生长的关系

田 鲲1,陈 宇1,耿 宁2,杨名仲1,章卫平2   

  1. 1.四川大学华西口腔医院 病理科;2.口腔生物医学工程教育部重点实验室,四川大学,四川 成都610041
  • 收稿日期:2005-08-25 修回日期:2005-08-25 出版日期:2005-08-20 发布日期:2005-08-20
  • 通讯作者: 陈 宇,Tel:028-85501465
  • 作者简介:田 鲲(1978-),女,贵州人,博士研究生
  • 基金资助:
    教育部回国人员科研启动基金资助项目(0040305402002)

Relationship of the Disturbed Balance between Matrix Metalloproteinases and their Tissue Inhibitors and the Invasion of Malignant Salivary Gland Tumours

TIAN Kun1, CHEN Yu1, GENG Ning2, YANG Ming-zhong1, ZHANG Wei-ping2   

  1. 1.Dept. ofOral Pathology,West China College ofStomatology, Sichuan University,Chengdu610041,China;2.Key. Labora- tory ofOral Biomedical EngineeringMinistry ofEducation, Sichuan University,Chengdu610041,China
  • Received:2005-08-25 Revised:2005-08-25 Online:2005-08-20 Published:2005-08-20

摘要: 目的 探讨基质金属蛋白酶2、9(MMP-2、9),膜型基质金属蛋白酶1(MT1-MMP)及基质金属蛋白酶组织抑 制剂1、2(TIMP-1、2)与涎腺恶性肿瘤浸润生长的关系。方法 应用免疫组化SP法和明胶酶谱法检测28例涎腺良 性肿瘤、26例涎腺恶性肿瘤中MMP-2、9,MT1-MMP及TIMP-1、2的表达及细胞定位,分析其中酶原与活性酶的含量 比例。结果 涎腺恶性肿瘤中MMP-2、9的表达强于良性肿瘤(P<0·05),TIMP-1、2的表达低于良性肿瘤 (P<0·05)。MMP-2、MT1-MMP、TIMP-2的表达有相关性。MMP-9酶原及活性MMP-9在恶性肿瘤中的表达均高于良 性肿瘤(P<0·05)。结论 MMP-2、9在涎腺恶性肿瘤浸润性生长中扮演了重要角色。涎腺恶性肿瘤中,TIMP-1、2 抑制作用的降低导致了MMP-2、9合成、激活的增多,令MMP-2、9与其天然组织抑制剂TIMP-1、2之间的平衡失调, 从而基底膜加速降解。

关键词: 基质金属蛋白酶, 基质金属蛋白酶组织抑制剂, 涎腺肿瘤

Abstract:

Objective To detect protein expression of MMPs and TIMPs in various salivary gland neoplasms and to investigate their roles in invasion and metastasis of the malignant salivary gland tumors.Methods Immunohistochemistry and Gelatin zymog- raphy analyses for MMP-2, MMP-9, MT1-MMP, TIMP-1 and TIMP-2 were performed in 26 malignant and 28 benign salivary gland tumors.Results The expression of MMP-2 and MMP-9 was significantly higher in carcinomas than in adenomas(P< 0·05). TheMMP-2/TIMP-1 andMMP-2/TIMP-2 was also significantly higher in carcinomas than in adenomas(P<0·05). There was a cooperated effect among MMP-2, MT1-MMP and TIMP-2. The expression of active MMP-2, proMMP-9 and active MMP-9 was significantly higher in malignant tumors than in benign tumors (P<0·05).Conclusion MMP-2 and MMP-9 may play im- portant roles in invasion ofmalignant salivary gland tumors. Adisturbed balance betweenMMP-2, MMP-9, TIMP-1 andTIMP-2 in malignant salivary gland tumors was detected. It was the absolute increase of MMP-2 and MMP-9 to induce the unbalance.

Key words: matrix metalloproteinases, tissue inhibitors of metalloproteinase, salivary gland tumor