MMP9 and cancer: AKT1, serine-threonine protein kinase; ATM, ataxia telangiectasiamutated; BRCA1, breast cancer 1; BSA, bovine serum albumin; CASP8, caspase 8; CCL21, Chemokine (C-C Motif) ligand 21; CCR7, chemokine (C-C motif) receptor 7; DCs, dendritic cells; FOS, Fos proto-oncogene; IL-8, interleukin 8; ITGA2, alpha-2 integrin; MMP-9, promoted matrix metallopeptidase-9; NK, natural killer; NKT, natural killer T; PBS, phosphate-buffered saline.