open access

https://hdl.handle.net/2115/87490

Interaction of Quinolones Carrying New R1 Group with Mycobacterium leprae DNA Gyrase

英語

WQ-3334

2021-12-01

Mary Ann Liebert

Microbial drug resistance

27(12)

1616-1623

Background: Leprosy is a chronic infectious disease caused by Mycobacterium leprae and the treatment of choice is ofloxacin (OFX). Specific amino acid substitutions in DNA gyrase of M. leprae have been reported leading to resistance against the drug. In our previous study, WQ-3810, a fluoroquinolone with a new R1 group (6-amino-3,5-difluoropyridin-2-yl) was shown to have a strong inhibitory activity on OFX-resistant DNA gyrases of M. leprae, and the structural characteristics of its R1 group was predicted to enhance the inhibitory activity. Methodology/Principal Finding: To further understand the contribution of the R1 group, WQ-3334 with the same R1 group as WQ-3810, WQ-4064, and WQ-4065, but with slightly modified R1 group, were assessed on their activities against recombinant DNA gyrase of M. leprae. An in silico study was conducted to understand the molecular interactions between DNA gyrase and WQ compounds. WQ-3334 and WQ-3810 were shown to have greater inhibitory activity against M. leprae DNA gyrase than others. Furthermore, analysis using quinolone-resistant M. leprae DNA gyrases showed that WQ-3334 had greater inhibitory activity than WQ-3810. The R8 group was shown to be a factor for the linkage of the R1 groups with GyrB by an in silico study. Conclusions/Significance: The inhibitory effect of WQ compounds that have a new R1 group against M. leprae DNA gyrase can be enhanced by improving the binding affinity with different R8 group molecules. The information obtained by this work could be applied to design new fluoroquinolones effective for quinolone-resistant M. leprae and other bacterial pathogens.

学術雑誌論文

Accepted Manuscript

This is the accepted version of the following article: [Jong-Hoon Park, Tomoyuki Yamaguchi, Yuki Ouchi, Kentaro Koide, Ruttana Pachanon, Joseph Yamweka Chizimu, Shigetarou Mori, Hyun Kim, Tetsu Mukai, Chie Nakajima, and Yasuhiko Suzuki.Microbial Drug Resistance.Dec 2021.1616-1623.http://doi.org/10.1089/mdr.2020.0408], which has now been formally published in final form at Microbial Drug Resistance at [https://www.liebertpub.com/doi/abs/10.1089/mdr.2020.0408]. This original submission version of the article may be used for non-commercial purposes in accordance with the Mary Ann Liebert, Inc., publishers’ self-archiving terms and conditions.

1076-6294