Matrix metalloproteinase 2 and Matrix metalloproteinase 9 (MMP-2 (for Matrix metalloproteinase 2); MMP-9 (for Matrix metalloproteinase 9))

Matrix metalloproteinase 2 and Matrix metalloproteinase 9 are zinc-dependent enzymes that degrade components of the extracellular matrix, particularly gelatin and type IV collagen. They play critical roles in normal physiological processes such as tissue repair, angiogenesis, bone remodeling, and regulation of inflammation. At the same time, their excessive activity is implicated in diseases such as cancer (where they promote tumor invasion and metastasis), cardiovascular disease, neuroinflammation, and neuropsychiatric disorders. Both are tightly regulated by inhibitors (TIMPs), proenzyme activation mechanisms, and transcriptional control. Because of their substantial role in pathological extracellular matrix remodeling, they are considered significant therapeutic targets. However, their biological versatility means that inhibition strategies pose notable safety and selectivity challenges

Other names

MMP-2: 72 kDa type IV collagenase, gelatinase AMMP-9: 92 kDa type IV collagenase, gelatinase BMatrix metallopeptidase 2Matrix metallopeptidase 9

Inhibition of zinc-dependent catalytic activity by chelation or direct binding Allosteric inhibition at substrate recognition sites Blockade of proenzyme activation Upregulation or downregulation via modulation of expression (e.g., with small molecule or gene therapy)