Extracellular matrix degradation (ECM degradation)

Extracellular matrix (ECM) degradation is a complex biological process involving the enzymatic breakdown of the structural network that surrounds and supports cells in tissues. This process is primarily orchestrated by several families of proteases, most notably Matrix Metalloproteinases (MMPs), ADAMs (A Disintegrin and Metalloproteinases), ADAMTS, and various serine and cysteine proteases such as cathepsins (NCBI, 2023). Under normal physiological conditions, ECM degradation is tightly regulated and is essential for processes like tissue repair, bone remodeling, and cell migration; however, its dysregulation is a central feature of many chronic diseases (Reactome, 2022). In oncology, excessive ECM degradation allows tumor cells to breach basement membranes and invade distant organs, facilitating metastasis and releasing growth factors previously sequestered within the matrix (PubMed, PMC7016609). In degenerative diseases like osteoarthritis, the uncontrolled degradation of collagen and proteoglycans leads to the progressive loss of joint function. While numerous pharmaceutical agents, particularly MMP inhibitors, have been developed to target this process, many have failed in clinical trials due to significant safety concerns, such as musculoskeletal syndrome, arising from the inhibition of physiological remodeling across multiple organ systems (PubMed, PMC2756303).

Other names

Extracellular matrix remodelingProteolysis of the extracellular matrixConnective tissue degradationECM catabolism

Inhibition of zinc-dependent endopeptidases (Matrix Metalloproteinases), competitive binding to catalytic domains, and chelation of essential metal ions required for enzyme activity.