ABSTRACT
Objective: To explore the effect of tripartite motif 46 (TRIM46) on the proliferation and invasion of colorectal cancer cells and study its possible mechanism. Methods: After TRIM46 siRNA was transfected into human colorectal cancer HCT116 cells, the expressions of TRIM46 mRNA and protein were detected by real-time fluorescent quantitative PCR and Western blotting, respectively. CCK-8 assay and Transwell chamber assay were implemented to observe the effect of TRIM46 down-regulation on the proliferation and invasion of HCT116 cells, and the expression of Src homology 2 (SH2)-containing tyrosine phosphatase 1 (SHP1) was detected by Western blotting. Results: After TRIM46 siRNA was transfected into human colorectal cancer HCT116 cells, the expression levels of TRIM46 mRNA and protein were inhibited (both P < 0.05). Knockdown of TRIM 46 significantly suppressed the cell proliferation and invasion of HCT116 cells (both P < 0.05). However, the expression level of SHP1 was increased (P < 0.05). Conclusion: Ubiquitin ligase TRIM46 may improve the proliferation and invasion of human colorectal cancer cells through suppressing SHP1.