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Inhibition of matrix metalloproteinases (MMPs) by tetracyclines

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Abstract

Remodelling of the extracellular matrix and destruction of connective tissue are regarded as characteristic features of degenerative and invasive processes such as rheumatoid arthritis, periodontitis, wound healing, tumour growth and metastatic invasion. Matrix remodelling is a complex process in which matrix metalloproteinases (MMPs) play a central role. MMP activity arises from a multi-step process, which is tightly regulated. Overexpression and activation of MMPs are correlated with a number of pathologies.

Tetracyclines and tetracycline derivatives are able to inhibit MMP activity, independent of their anti-microbial action. The various MMPs have a different sensitivity for inhibition by tetracyclines: it is the strongest for MMP-8 and MMP-13, and weak or absent for MMP-1 and MMP-3. Inhibition ofin vitroactivity is strongly dependent on the assay conditions used (pH, kind of substrate, source of enzyme). Besides activity, the activation step of MMPs and MMP synthesis are also tetracycline-sensitive, varying per MMP. For a number of MMPs (MMP-8, MMP-9 and MMP-13), inhibition occurs at tetracycline levels which are physiologically obtainable upon therapy. In general, MMP inhibition by tetracyclines is observed in cells activated by growth factors or inflammatory mediators, in which MMP expression is induced. No effect of tetracyclines on the synthesis and action of TIMPs, inhibitors of MMPs, was observed.

Use of tetracyclines in animal models and human diseases, in which MMPs play a role, reflects thein vitrosituation: inhibition of MMP synthesis and reduction or prevention of the pathological condition.

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Hanemaaijer, R. et al. (2001). Inhibition of matrix metalloproteinases (MMPs) by tetracyclines. In: Nelson, M., Hillen, W., Greenwald, R.A. (eds) Tetracyclines in Biology, Chemistry and Medicine. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8306-1_11

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  • DOI: https://doi.org/10.1007/978-3-0348-8306-1_11

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