Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Minocycline is more potent than tetracycline and doxycycline in inhibiting MMP-9 in vitro

(2016) Minocycline is more potent than tetracycline and doxycycline in inhibiting MMP-9 in vitro. Jundishapur Journal of Natural Pharmaceutical Products.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Background: Tetracyclines are antimicrobial agents that possess anti-inflammatory and matrix metalloproteinase (MMP) inhibitory effects. Tetracycline, doxycycline, and minocycline have shown different potencies in inhibiting various MMPs. MMPs are a conserved family of zinc-dependent endopeptidases, which are involved in various physiologic and pathologic conditions. MMP-9 is among the most important proteases involved in the development of cardiovascular disease, cancer, and inflammatory disease Objectives: Considering the central role of MMP-9 in the above-mentioned diseases and the variable inhibitory potentials of routine tetracyclines, including tetracycline, doxycycline, and minocycline, this study measured the inhibitory effect of these routine tetracycline agents on MMP-9 activity obtained from U-937 cell cultures using the zymography method. MaterialsandMethods: AnMMP-9-rich culturemediumof U-937 cellswas used as the source of the enzyme. Serial dilutions of 5, 20, 100, 200, and 500 μMof each drug were placed in zymography incubation buffer. Gelatin zymography was run, and densitometry of the bands was performed using Image J software. The resulting data were used to draw dose-response curves using GraphPad Prism software. Results: Our results showed that tetracyclines inhibited MMP-9 activity with IC50 values of 40.0, 10.7, and 608.0 μM for tetracycline, minocycline, and doxycycline, respectively. Minocycline showed the highest potency in MMP-9 inhibition (P < 0.0001), while tetracycline was found to be more potent than doxycycline in MMP-9inhibition based on the zymography experiments (P < 0.0001). Conclusions: Our results suggest that tetracyclines dose-dependently inhibitMMP-9activity, andamongthecommonclinical tetracyclines, minocycline provides the most potent inhibition of excess MMP-9 activity and its consequences. © 2016, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences.

Item Type: Article
Keywords: doxycycline; gelatin; gelatinase B; minocycline; tetracycline, Article; concentration response; culture medium; data analysis software; densitometry; dilution; enzyme activity; enzyme inhibition; IC50; imaging software; in vitro study; U937 cell line; zymography
Journal or Publication Title: Jundishapur Journal of Natural Pharmaceutical Products
Volume: 11
Number: 2
Publisher: Ahvaz Jundishapur University of Medical Sciences
Identification Number: 10.17795/jjnpp-27377
ISSN: 17357780
Depositing User: مهندس جمال محمودپور
URI: http://eprints.muk.ac.ir/id/eprint/669

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