Effect of MMP-9 inhibitor on invasion and migration ability of human tongue squamous cell carcinoma SCC-25 cell and its mechanism

doi:10.19438/j.cjoms.2021.05.007

Abstract

Abstract: PURPOSE: To study the effect of matrix metalloproteinase-9 (MMP-9) inhibitors on invasion and migration ability of human tongue squamous cell carcinoma (TSCC) SCC-25 cells, and explore its related mechanisms. METHODS: SCC-25 cells in the logarithmic phase were taken and treated with 0, 5, 10, and 20 μmol/L MMP-9 inhibitor BB-94 respectively, and divided into control group, experimental group A, B and C. RT-qPCR, Western blot were used to determine the expression of MMP-9. Transwell chamber experiment was used to determine invasion ability. Scratch test was used to determine migration ability. Western blot was used to determine the protein expression of intercellular adhesion molecule-1 (ICAM-1), E-cadherin (E-cad), and connexin 43 (Cx43). SPSS 22.0 software package was used for data analysis. RESULTS: Compared with the control group, the relative expression of MMP-9 mRNA and protein, migration rate, and number of penetrating cells/field of view in experimental A, B, and C group decreased significantly(P<0.05). Compared with experimental group A, the relative expression of MMP-9 mRNA and protein, migration rate, and number of penetrating cells/field of view in experimental B, and C group decreased significantly (P<0.05). Compared with experimental group B, the relative expression of MMP-9 mRNA and protein, migration rate, the number of penetrating cells/field of view in experimental group C decreased(P<0.05). Compared with the control group, the relative expression of ICAM-1 protein in experimental group A, B, and C decreased, while the relative expression of E-cad and Cx43 protein increased significantly (P<0.05). Compared with experimental group A, the relative expression of ICAM-1 protein in experimental group B and C decreased, while the relative expression of E-cad and Cx43 protein increased significantly (P<0.05). Compared with experimental group B, the relative expression of ICAM-1 protein in experimental group C decreased, while the relative expression of E-cad and Cx43 protein increased(P<0.05). CONCLUSIONS: MMP-9 inhibitor can inhibit TSCC cell invasion and migration in a dose-dependent manner. It is speculated that its mechanism of action is related to down-regulation of ICAM-1 expression and up-regulation of E-cad and Cx43 expression.

Key words: Human tongue squamous cell carcinoma, Invasion, Migration, Matrix metalloproteinase-9

CLC Number:

R739.8

SHUI Wen-jun, GAO Jin-xing, REN Lei. Effect of MMP-9 inhibitor on invasion and migration ability of human tongue squamous cell carcinoma SCC-25 cell and its mechanism[J]. China Journal of Oral and Maxillofacial Surgery, 2021, 19(5): 424-428.

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