GSK2556286 Is a Novel Antitubercular Drug Candidate Effective In Vivo with the Potential To Shorten Tuberculosis Treatment
Eric L Nuermberger, Maria Santos Martínez-Martínez, Olalla Sanz, Beatriz Urones, Jorge Esquivias, Heena Soni, Rokeya Tasneen, Sandeep Tyagi, Si-Yang Li, Paul J Converse, Helena I Boshoff, Gregory T Robertson, Gurdyal S Besra, Katherine A Abrahams, Anna M Upton, Khisimuzi Mdluli, Gary W Boyle, Sam Turner, Nader Fotouhi, Nicholas C Cammack, Juan Miguel Siles, Marta Alonso, Jaime Escribano, Joel Lelievre, Joaquin Rullas-Trincado, Esther Pérez-Herrán, Robert H Bates, Gareth Maher-Edwards, David Barros, Lluís Ballell, Elena Jiménez, Eric L Nuermberger, Maria Santos Martínez-Martínez, Olalla Sanz, Beatriz Urones, Jorge Esquivias, Heena Soni, Rokeya Tasneen, Sandeep Tyagi, Si-Yang Li, Paul J Converse, Helena I Boshoff, Gregory T Robertson, Gurdyal S Besra, Katherine A Abrahams, Anna M Upton, Khisimuzi Mdluli, Gary W Boyle, Sam Turner, Nader Fotouhi, Nicholas C Cammack, Juan Miguel Siles, Marta Alonso, Jaime Escribano, Joel Lelievre, Joaquin Rullas-Trincado, Esther Pérez-Herrán, Robert H Bates, Gareth Maher-Edwards, David Barros, Lluís Ballell, Elena Jiménez
Abstract
As a result of a high-throughput compound screening campaign using Mycobacterium tuberculosis-infected macrophages, a new drug candidate for the treatment of tuberculosis has been identified. GSK2556286 inhibits growth within human macrophages (50% inhibitory concentration [IC50] = 0.07 μM), is active against extracellular bacteria in cholesterol-containing culture medium, and exhibits no cross-resistance with known antitubercular drugs. In addition, it has shown efficacy in different mouse models of tuberculosis (TB) and has an adequate safety profile in two preclinical species. These features indicate a compound with a novel mode of action, although still not fully defined, that is effective against both multidrug-resistant (MDR) or extensively drug-resistant (XDR) and drug-sensitive (DS) M. tuberculosis with the potential to shorten the duration of treatment in novel combination drug regimens. (This study has been registered at ClinicalTrials.gov under identifier NCT04472897).
Keywords: GSK2556286; Mycobacterium tuberculosis; mouse; pharmacology; relapse; tuberculosis.
Conflict of interest statement
The authors declare a conflict of interest. Maria Santos Martínez-Martínez, Jorge Esquivias, Juan Miguel Siles, Marta Alonso, Jaime Escribano, Joaquin Rullas-Trincado, Esther Pérez-Herrán, Gareth Maher-Edwards, Joel Lelievre, Elena Jimenez, Olalla Sanz, Gary Boyle, Sam Turner, Beatriz Urones, Robert H. Bates, David Barros, are employees of GlaxoSmithKline. Eric L. Nuermberger receives research support from Janssen and the TB Alliance.
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Source: PubMed