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  • Development of narrow-spectrum topoisomerase-targeting antibacterials against mycobacteria
    Sterle, Maša ...
    New 2-pyrrolamidobenzothiazole-based inhibitors of mycobacterial DNA gyrase were discovered. Among these, compounds 49 and 51, show excellent antibacterial activity against Mycobacterium tuberculosis ... and Mycobacterium abscessus with a notable preference for mycobacteria. Both compounds can penetrate infected macrophages and reduce intracellular M. tuberculosis load. Compound 51 is a potent inhibitor of DNA gyrase (M. tuberculosis DNA gyrase IC50 = 4.1 nM, Escherichia coli DNA gyrase IC50 of <10 nM), selective for bacterial topoisomerases. It displays low MIC90 values (M. tuberculosis: 0.63 μM; M. abscessus: 2.5 μM), showing specificity for mycobacteria, and no apparent toxicity. Compound 49 not only displays potent antimycobacterial activity (MIC90 values of 2.5 μM for M. tuberculosis and 0.63 μM for M. abscessus) and selectivity for mycobacteria but also exhibits favorable solubility (kinetic solubility = 55 μM) and plasma protein binding (with a fraction unbound of 2.9 % for human and 4.7 % for mouse). These findings underscore the potential of fine-tuning molecular properties to develop DNA gyrase B inhibitors that specifically target the mycobacterial chemical space, mitigating the risk of resistance development in non-target pathogens and minimizing harm to the microbiome.
    Vir: European journal of medicinal chemistry. - ISSN 0223-5234 (Vol. 276, [article no.] 116693, 2024, 15 str.)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 203570947

    Povezava(-e):

    https://www.sciencedirect.com/science/article/pii/S0223523424005737
    DOI

vir: European journal of medicinal chemistry. - ISSN 0223-5234 (Vol. 276, [article no.] 116693, 2024, 15 str.)
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