Structure-Guided Computational Approaches to Unravel Druggable Proteomic Landscape of Mycobacterium leprae .

Autor:	Vedithi SC; Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom., Malhotra S; Rutherford Appleton Laboratory, Science and Technology Facilities Council, Oxon, United Kingdom., Acebrón-García-de-Eulate M; Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom., Matusevicius M; Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom., Torres PHM; Laboratório de Modelagem e Dinâmica Molecular, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil., Blundell TL; Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom.
Jazyk:	angličtina
Zdroj:	Frontiers in molecular biosciences [Front Mol Biosci] 2021 May 07; Vol. 8, pp. 663301. Date of Electronic Publication: 2021 May 07 (Print Publication: 2021).
DOI:	10.3389/fmolb.2021.663301
Abstrakt:	Leprosy, caused by Mycobacterium leprae (M. leprae) , is treated with a multidrug regimen comprising Dapsone, Rifampicin, and Clofazimine. These drugs exhibit bacteriostatic, bactericidal and anti-inflammatory properties, respectively, and control the dissemination of infection in the host. However, the current treatment is not cost-effective, does not favor patient compliance due to its long duration (12 months) and does not protect against the incumbent nerve damage, which is a severe leprosy complication. The chronic infectious peripheral neuropathy associated with the disease is primarily due to the bacterial components infiltrating the Schwann cells that protect neuronal axons, thereby inducing a demyelinating phenotype. There is a need to discover novel/repurposed drugs that can act as short duration and effective alternatives to the existing treatment regimens, preventing nerve damage and consequent disability associated with the disease. Mycobacterium leprae is an obligate pathogen resulting in experimental intractability to cultivate the bacillus in vitro and limiting drug discovery efforts to repositioning screens in mouse footpad models. The dearth of knowledge related to structural proteomics of M. leprae , coupled with emerging antimicrobial resistance to all the three drugs in the multidrug therapy, poses a need for concerted novel drug discovery efforts. A comprehensive understanding of the proteomic landscape of M. leprae is indispensable to unravel druggable targets that are essential for bacterial survival and predilection of human neuronal Schwann cells. Of the 1,614 protein-coding genes in the genome of M. leprae , only 17 protein structures are available in the Protein Data Bank. In this review, we discussed efforts made to model the proteome of M. leprae using a suite of software for protein modeling that has been developed in the Blundell laboratory. Precise template selection by employing sequence-structure homology recognition software, multi-template modeling of the monomeric models and accurate quality assessment are the hallmarks of the modeling process. Tools that map interfaces and enable building of homo-oligomers are discussed in the context of interface stability. Other software is described to determine the druggable proteome by using information related to the chokepoint analysis of the metabolic pathways, gene essentiality, homology to human proteins, functional sites, druggable pockets and fragment hotspot maps. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2021 Vedithi, Malhotra, Acebrón-García-de-Eulate, Matusevicius, Torres and Blundell.)
Databáze:	MEDLINE
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