ABSTRACT
@#[Abstract] Objective: To investigate the impact of FBXW7 gene mutation on cell proliferation, apoptosis, migration, and invasion processes of colorectal cancer HCT-116 cell line. Methods: Recombinant plasmids carrying wild-type and mutant-type FBXW7 SNP were constructed and transfected into HCT-116 cell line; the FBXW7 protein expression level in HCT-116 strains after transfection was detected by Western blotting. Subsequently, cell proliferation capacity was tested by CCK-8 assay; tumor cell colony formation ability was tested by HTCA; cell apoptosis function was tested by FCM; cell migration and invasion were tested by scratch assay and Transwell assay, respectively. Results: Higher HBXW7 protein expression level was detected in HCT-116 strain transfected with wild-type HBXW7 in comparison to the control group (strains transfected with mutant-type HBXW7), negative-control (strains transfected with empty plasmids), and blank-control (strains untransfected) (all P<0.05). Compared with the other groups, strains transfected with wildtype HBXW7 exhibited significantly reduced proliferation, colony formation, migration and invasion ability (all P<0.05), but obviously increased apoptosis rate (P<0.05). Conclusion： ：FBXW7 gene mutation can down-regulate its protein expression, and further promote the proliferation, migration and invasion as well as inhibit the apoptosis of HCT-116 cells.