Fusidic acid-based drug combinations exhibit enhanced activity against <i>Mycobacterium tuberculosis</i>. Omollo, C., Moosa, A., Chibale, K., & Warner, D. F bioRxiv, Cold Spring Harbor Laboratory, jan, 2023. Paper doi abstract bibtex Tuberculosis (TB) imposes a major burden on global public health which is exacerbated by the escalating number of multidrug-resistant (MDR)-TB cases. There is consequently an urgent need for new anti-TB drugs and combination regimens. We have investigated the natural product antibiotic fusidic acid (FA) for repurposing against Mycobacterium tuberculosis , the causative agent of TB. Here, we report the results of synergy screens combining FA with a panel of approved anti-TB agents. Checkerboard and time-kill kinetics assays identified seven compounds from different chemical classes that synergized with FA in inhibiting the growth of M. tuberculosis in vitro : rifampicin (RIF), a rifamycin and frontline anti-TB drug; the macrolides, erythromycin (ERY), clarithromycin (CLR), and roxythromycin (ROX); the oxazolidinone, linezolid (LZD); the aminoglycoside, streptomycin (STR); and the aminocyclitol, spectinomycin (SPC). Among these, the strongest synergies were observed where FA was combined with SPC and ERY. Moreover, the FA-RIF combination was cidal, while all other FA combinations were bacteriostatic. These results provide in vitro evidence of the potential utility of FA-containing combinations against M. tuberculosis .
@article{Omollo2023,
abstract = {Tuberculosis (TB) imposes a major burden on global public health which is exacerbated by the escalating number of multidrug-resistant (MDR)-TB cases. There is consequently an urgent need for new anti-TB drugs and combination regimens. We have investigated the natural product antibiotic fusidic acid (FA) for repurposing against Mycobacterium tuberculosis , the causative agent of TB. Here, we report the results of synergy screens combining FA with a panel of approved anti-TB agents. Checkerboard and time-kill kinetics assays identified seven compounds from different chemical classes that synergized with FA in inhibiting the growth of M. tuberculosis in vitro : rifampicin (RIF), a rifamycin and frontline anti-TB drug; the macrolides, erythromycin (ERY), clarithromycin (CLR), and roxythromycin (ROX); the oxazolidinone, linezolid (LZD); the aminoglycoside, streptomycin (STR); and the aminocyclitol, spectinomycin (SPC). Among these, the strongest synergies were observed where FA was combined with SPC and ERY. Moreover, the FA-RIF combination was cidal, while all other FA combinations were bacteriostatic. These results provide in vitro evidence of the potential utility of FA-containing combinations against M. tuberculosis .},
author = {Omollo, Charles and Moosa, Atica and Chibale, Kelly and Warner, Digby F},
doi = {10.1101/2023.01.19.524834},
file = {:C$\backslash$:/Users/01462563/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Omollo et al. - 2023 - Fusidic acid-based drug combinations exhibit enhanced activity against Mycobacterium tuberculosis.pdf:pdf},
journal = {bioRxiv},
keywords = {OA,fund{\_}not{\_}ack,original},
mendeley-tags = {OA,fund{\_}not{\_}ack,original},
month = {jan},
pages = {2023.01.19.524834},
publisher = {Cold Spring Harbor Laboratory},
title = {{Fusidic acid-based drug combinations exhibit enhanced activity against \textit{Mycobacterium tuberculosis}}},
url = {https://www.biorxiv.org/content/10.1101/2023.01.19.524834v1 https://www.biorxiv.org/content/10.1101/2023.01.19.524834v1.abstract},
year = {2023}
}
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