Down-regulation of MTA1 protein leads to the inhibition of migration, invasion, and angiogenesis of non-small-cell lung cancer cell line

被引:18
作者
Li, Shuhai [1 ]
Tian, Hui [1 ]
Yue, Weiming [1 ]
Li, Lin [1 ]
Gao, Cun [1 ]
Si, Libo [1 ]
Li, Wenjun [1 ]
Hu, Wensi [1 ]
Qi, Lei [1 ]
Lu, Ming [1 ]
机构
[1] Shandong Univ, Qilu Hosp, Dept Thorac Surg, Jinan 250012, Peoples R China
基金
中国国家自然科学基金;
关键词
metastasis-associated protein 1; RNA interference; angiogenesis; non-small-cell lung cancer; METASTASIS-ASSOCIATED PROTEIN-1; BREAST-CANCER; IN-VITRO; TUMOR-METASTASIS; TRANSCRIPTIONAL REPRESSION; HEPATOCELLULAR-CARCINOMA; AMPLIFIED SEQUENCE-3; ESTROGEN-RECEPTOR; EXPRESSION; GENE;
D O I
10.1093/abbs/gms113
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Metastasis-associated protein 1 (MTA1) high expression has been detected in a wide variety of human aggressive tumors and plays important roles in the malignant biological behaviors such as invasion, metastasis, and angiogenesis. However, the specific roles and mechanisms of MTA1 protein in regulating the malignant behaviors of non-small-cell lung cancer (NSCLC) cells still remain unclear. To elucidate the detailed functions of MTA1 protein, we down-regulated the MTA1 protein expression in NSCLC cell line by RNA interference (RNAi) in vitro, and found that down-regulation of MTA1 protein significantly inhibited the migration and invasion potentials of 95D cells. Further research revealed that down-regulation of MTA1 protein significantly decreased the activity of matrix metalloproteinase-9, which could be the mechanism responsible for the inhibition of 95D cells migration and invasion. In addition, the tube formation assay demonstrated that the number of complete tubes induced by the conditioned medium of MTA1-siRNA 95D cells was significantly smaller than that of 95D cells. These findings demonstrate that MTA1 protein plays important roles in regulating the migration, invasion, and angiogenesis potentials of 95D cells, suggesting that MTA1 protein down-regulation by RNAi might be a novel therapeutic approach to inhibit the progression of NSCLC.
引用
收藏
页码:115 / 122
页数:8
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