Anti-tuberculosis activity of the anti-malaria cytochrome bcc oxidase inhibitor SCR0911.

ACS infectious diseases(2020)

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摘要
The ability to respire and generate ATP is essential for the physiology, persistence and pathogenicity of Mycobacterium tuberculosis, which causes Tuberculosis. By employing a lead repurposing strategy, the malarial cytochrome bc1 inhibitor SCR0911 was tested against mycobacteria. Docking studies were carried out to reveal potential binding and to understand the binding interactions with the target, cytochrome bcc. Whole cell-based and in vitro assays demonstrated the potency of SCR0911 by inhibiting cell growth and ATP synthesis in both the fast- and slow- growing M. smegmatis and M. bovis bacillus Calmette-Guérin, respectively. The variety of biochemical assays and the use of a cytochrome bcc-deficient mutant strain validated the cytochrome bcc oxidase as the direct target of the drug. The data demonstrate the broad-spectrum activity of SCR0911 and opens the door for structure-activity relationship studies to improve the potency of new mycobacteria specific SCR0911 analogs.
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关键词
Tuberculosis,Mycobacteria,OXPHOS pathway,multidrug resistance,extremely drug resistance,Telacebec,Q203
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