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AIM: To explore the expression of Tiam1 gene in colorectal carcinoma and its correlation with tumor metastasis. METHODS: Expressions of Tiaml gene in 8 colorectal carcinoma cell lines were detected by reverse transcriptase-polymerase chain reaction. In vitro invasiveness was determined by means of Matrigel invasion assay. The correlation of Tiaml expression with the invasive ability was also analyzed. RESULTS: Tiaml gene was highly expressed in LoVo and SW620, which were established from metastatic colorectal carcinomas in comparison with LS174T, SW480, HCT116, LST, HRT-18 and Hee8693, which were established from primary colorectal carcinomas. In vitro cell invasivion demonstrated that LoVo and SW620 had a higher invasive ability than LS174T, SW480, HCT116, LST, HRT-18 and Hee8693. The expression of Tiaml gene was highly related to the metastatic potential of colorectal carcinoma cells. CONCLUSION: Tiaml gene may play an important role in invasion and metastasis of colorectal carcinoma and is a metastasis-related gene.
AIM: To explore the expression of Tiam1 gene in colorectal carcinoma and its correlation with tumor metastasis. METHODS: Expressions of Tiaml gene in 8 colorectal carcinoma cell lines were detected by reverse transcriptase-polymerase chain reaction. In vitro invasiveness was determined by means of Matrigel invasive assay. The correlation of Tiaml expression with the invasive ability was also analyzed. RESULTS: Tiaml gene was highly expressed in LoVo and SW620, which were established from metastatic colorectal carcinomas in comparison with LS174T, SW480, HCT116, LST, HRT-18 and Hee8693, which were established from primary colorectal carcinomas. In vitro cell invasivion demonstrated that LoVo and SW620 had a higher invasive ability than LS174T, SW480, HCT116, LST, HRT-18 and Hee8693. The expression of Tiaml gene was highly related to the metastatic potential of colorectal carcinoma cells. CONCLUSION: Tiaml gene may play an important role in invasion and metastasis of colorectal carcinoma and is a metastasis-related gene.