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Expression of tissue levels of matrix metalloproteinases and tissue inhibitors of metalloproteinases in gastric adenocarcinoma
Author(s) -
Zhang Ming,
Zhu GuanYu,
Gao HongYu,
Zhao ShuPeng,
Xue Yingwei
Publication year - 2010
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/jso.21824
Subject(s) - matrix metalloproteinase , medicine , gastric adenocarcinoma , adenocarcinoma , tissue remodeling , pathology , cancer research , cancer , inflammation
Background and Objectives Matrix metalloproteinases (MMPs) are one of the major classes of proteolytic enzymes involved in tumor invasion and metastasis, being inhibited by naturally occurring tissue inhibitors of metalloproteinases (TIMPs). We examined mRNA expression for MMP‐2, MMP‐7, MMP‐9, MT1‐MMP, TIMP‐1, and TIMP‐2 in human gastric adenocarcinoma tissues, and the correlation between their expression and clinicopathological variables. Methods Gastric tissue samples from 72 patients with gastric adenocarcinoma were available for this study. To determine mRNA expression for MMP‐2, MMP‐7, MMP‐9, MT1‐MMP, TIMP‐1, and TIMP‐2, semiquantitative reverse transcriptase‐polymerase chain reaction (RT‐PCR) was carried out on tumor and normal tissues, respectively. Results Mean MMP‐2, MMP‐7, MMP‐9, MT1‐MMP, TIMP‐1, and TIMP‐2 mRNA expression in the gastric adenocarcinomas was significantly higher than in the normal tissue. In terms of the invasion of the tumor, lymph node metastasis, and tumor stage of gastric adenocarcinoma, the differences in MMP‐2, MMP‐7, MMP‐9, and MT1‐MMP mRNA expression levels were significant. MMP‐2, MMP‐7, MMP‐9, MT1‐MMP, TIMP‐1, and TIMP‐2 mRNA expression did not differ significantly in relation to histological type of gastric adenocarcinoma. Conclusion The correlation between the increased expression of MMP‐2, MMP‐7, MMP‐9, and MTI‐MMP and clinicopathological parameters reflects a role in predicting the aggressive behavior of gastric cancer. J. Surg. Oncol. 2011; 103:243–247. © 2010 Wiley‐Liss, Inc.