“…MMP-2 and MMP-9, belonging to gelatinases, are the major proteases that digest IV collagen, a component of the basement membrane. It was reported that MMP-2 and MMP-9 expression and activity have been associated with melanoma metastasis and may represent a prognostic factor in melanoma (Berube et al, 2005;Cotignola et al, 2007;El-Shabrawi et al, 2001;Nischt et al, 2001;Rey et al, 2011;Tang et al, 2013).…”