MMP9 and nasopharyngeal carcinoma: Increased expression of miR-10b in CNE1 cells promotes proliferation, migration and EMT in NP69 cells by downregulating epithelial cell markers (E-cadherin and β-catenin) and upregulating the expression of mesenchymal cell markers (fibronectin, N-cadherin, vimentin and Matrix Metallopeptidase 9 (MMP9)) in nasopharyngeal carcinoma cells (29, 30).