基质金属蛋白酶-2和-9在宫颈癌的表达及其相关性研究

目的　探讨基质金属蛋白酶 - 2和 - 9(MMP- 2和 MMP- 9)在宫颈癌组织中的表达及其与癌浸润和转移的相关性。方法　采用免疫组化 L s AB法检测 6 2例宫颈浸润癌、5例原位癌、10例正常宫颈以及 10例转移淋巴结中 MMP- 2和 MMP- 9蛋白的表达。结果　 MMP- 2和 MMP- 9在宫颈浸润癌细胞及癌旁间质细胞中表达显著高于原位癌及正常宫颈上皮 (P<0 .0 5 ) ,MMP- 9与 MMP- 2有弱相关性 ,MMP- 9的阳性表达显著强于 MMP- 2 (P<0 .0 1) ;MMP- 2和 MMP- 9的表达与临床分期、组织学分级、病理类型均无相关性 (P>0 .0 5 ) ;MMP- 9的表达与宫颈癌淋巴转移有关。结论　基质金属蛋白酶 MMP- 2和 MMP- 9在宫颈癌组织中的高表达与宫颈癌的侵袭性行为有关 ,MMP- 9与宫颈癌的侵袭性行为关系更密切 ,可能成为判断早期宫颈癌预后的指标之一。

The Expression of Matrix Metalloproteinase-2 and -9 in Cervical Cancer and a Study of Their Relationship

Objective To detect the expressions of matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9) in cervical cancer and their correlation with clinicpathologic features. Methods With the use of specific monoclonal antibody to human MMP-2 and MMP-9, the formalin-fixed and paraffin-embedded specimens of 62 invasive carcinomas of cervix uteri, 5 carcinomas in situ,10 normal cervical epithelia and 10 lymph node metastases were detected by immunohistochemical method. Results MMP-2 and MMP-9 protein expressions in tumor and peritumoral stromal cells were enhanced in invasive carcinoma, compared to those in carcinoma in situ and controls (P<0.05). There was a low correlation between MMP-2 and MMP-9 (r=0.34, P<0.01); the expression level of MMP-9 was higher than MMP-2. The protein expressions of MMP-2 and MMP-9 did not correlate with tumor stage, histological grade or pathological subtype. MMP-9 was correlated with lymph node metastasis and lymphovascular space invasion. Conclusion The over-expression of matrix metalloproteinase-2 and -9 was correlated with invasive behaviour of cervical cancer, MMP-9 was significantly correlated with the lymph node metastasis, it might become a useful prognostic indicator for early cervical cancer.