Monoclonal antibodies against metzincin targets.

Published on Jan 1, 2019in British Journal of Pharmacology7.73
· DOI :10.1111/BPH.14186
Salvatore Santamaria14
Estimated H-index: 14
(Imperial College London),
Rens de Groot9
Estimated H-index: 9
(Imperial College London)
The metzincin clan of metalloproteinases includes the MMP, ADAM and ADAMTS families, which cleave extracellular targets in a wide range of (patho)physiological processes. Antibodies constitute a powerful tool to modulate the activity of these enzymes for both therapeutic and research purposes. In this review, we give an overview of monoclonal antibodies (mAbs) that have been tested in preclinical disease models, human trials and important studies of metzincin structure and function. Initial attempts to develop therapeutic small molecule inhibitors against MMPs were hampered by structural similarities between metzincin active sites and, consequently, off-target effects. Therefore, more recently, mAbs have been developed that do not bind to the active site but bind to surface-exposed loops that are poorly conserved in closely related family members. Inhibition of protease activity by these mAbs occurs through a variety of mechanisms, including 1) barring access to the active site 2) disruption of exosite binding and 3) prevention of protease activation. These different modes of inhibition are discussed in the context of the antibodies’ potency, selectivity and, importantly, the effects in models of disease and clinical trials. In addition, various innovative strategies that were used to generate anti-metzincin mAbs are discussed.
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