Expressions of tissue factor pathway inhibitor-2 and synuclein gamma in esophageal cancer and their correlation with local invasion, lymph node metastasis and apoptosis
10.3781/j.issn.1000-7431.2010.03.010
- VernacularTitle:组织因子途径抑制物-2和γ-神经突触核蛋白在食管癌中的表达及其与肿瘤细胞浸润、转移和凋亡之间的关系
- Author:
Zhen SUN
;
Qingxia FAN
;
Xiaotian SHI
;
Mingyue SUN
- Publication Type:Journal Article
- Keywords:
Esophageal neoplasms;
Gene expression;
Neoplasm metastasis;
Apoptosis;
Immunohistochemistry;
Tissue factor pathway inhibitor-2;
Synuclein gamma
- From:
Tumor
2010;(3):220-225
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the expression of tissue factor pathway inhibitor-2 (TFPI-2) and synuclein gamma (SNCG) in esophageal cancer and their correlation with local invasion, lymph node metastasis and apoptosis. Methods:The expression of TFPI-2, SNCG, and matrix metalloproteinase-9 (MMP-9) was detected by immunohistochemical SP methods in 82 cases of esophageal cancer tissues, 20 cases of atypical hyperplasia tissues, and 54 cases of para-cancerous tissues. The apoptosis of esophageal cancer cells was detected by TUNEL staining and apoptosis index (AI) was calculated. Results:The positive rates were 30.4%, 60.0%, and 87.0% for TFPI-2 protein and 63.4%, 30.0%, and 3.7% for SNCG protein in the tumor tissues, atypical hyperplasia tissues,and tumor-adjacent normal tissues, respectively. There was a significant difference between the three groups(P<0.01). The positive expression of TFPI-2 and SNCG correlated with the lymph node metastasis, invasion depth, TNM staging, and differentiation degree of esophageal cancer (P<0.01), but did not correlate with age at surgery, gender, tumor location, and pathologic classification(P>0.05). The expression of TFPI-2 and MMP-9 was negatively correlated (r=-0.636, P=0.000). The expression of SNCG and MMP-9 was positively correlated(r=0.393,P=0.000). AI was related with TFPI-2 and SNCG expression (P<0.05). Conclusion:TFPI-2 not only inhibited the expression of MMP-9 but also induces apoptosis of esophageal cancer to prevent tumor invasion and metastasis, however, SNCG plays a contradictory role in cancer development. TFPI-2 and SNCG might serve as new tumor markers and the new targets for tumor gene therapy.
