RESUMEN
Objective To investigate the effects of MTA1 knock down on migration and invasion of NPC cell 5-8F in vitro. Methods RNAi (Si-MTA1-01 and Si-MTA1-02) that can transiently silenced MTA1 was designed, synthesized and transfected into 5-8F cells by lipofectamine 2000. Control group (transfection with nonsense sequence) was also estab-lished. The efficiency of MTA1 depletion was determined by q-PCR and Western blot. Wound-healing assay ,Matrigel inva-sion assay and thesolid-phase adhesion assay were performed to investigate the effect of MTA1 knockdown on 5-8F cell me-tastasis. Results Transiently knock down of MTA1 decreased MTA1 transcription and expression in 5-8F cells compared to shRNA-con cells, showing by Real-time PCR and western blot. The invasion and migration of the cells transfected with siRNA-MTA1 were much weaker than the control group (P＜0.05). Conclusion silencing MTA 1 gene can effectively in-hibit the migration and invasion of nasopharyngeal carcinoma cell, and might be a promising target for NPC treatment.