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    Mycobacterium tuberculosis whole genome sequencing and protein structure modelling provides insights into anti-tuberculosis drug resistance

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    Type
    Article
    Authors
    Phelan, Jody
    Coll, Francesc cc
    McNerney, Ruth cc
    Ascher, David B.
    Pires, Douglas E. V.
    Furnham, Nick
    Coeck, Nele
    Hill-Cawthorne, Grant A. cc
    Nair, Mridul
    Mallard, Kim
    Ramsay, Andrew
    Campino, Susana
    Hibberd, Martin L. cc
    Pain, Arnab cc
    Rigouts, Leen
    Clark, Taane G. cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Computational Bioscience Research Center (CBRC)
    Pathogen Genomics Laboratory
    Date
    2016-03-23
    Online Publication Date
    2016-03-23
    Print Publication Date
    2016-12
    Permanent link to this record
    http://hdl.handle.net/10754/603611
    
    Metadata
    Show full item record
    Abstract
    Background Combating the spread of drug resistant tuberculosis is a global health priority. Whole genome association studies are being applied to identify genetic determinants of resistance to anti-tuberculosis drugs. Protein structure and interaction modelling are used to understand the functional effects of putative mutations and provide insight into the molecular mechanisms leading to resistance. Methods To investigate the potential utility of these approaches, we analysed the genomes of 144 Mycobacterium tuberculosis clinical isolates from The Special Programme for Research and Training in Tropical Diseases (TDR) collection sourced from 20 countries in four continents. A genome-wide approach was applied to 127 isolates to identify polymorphisms associated with minimum inhibitory concentrations for first-line anti-tuberculosis drugs. In addition, the effect of identified candidate mutations on protein stability and interactions was assessed quantitatively with well-established computational methods. Results The analysis revealed that mutations in the genes rpoB (rifampicin), katG (isoniazid), inhA-promoter (isoniazid), rpsL (streptomycin) and embB (ethambutol) were responsible for the majority of resistance observed. A subset of the mutations identified in rpoB and katG were predicted to affect protein stability. Further, a strong direct correlation was observed between the minimum inhibitory concentration values and the distance of the mutated residues in the three-dimensional structures of rpoB and katG to their respective drugs binding sites. Conclusions Using the TDR resource, we demonstrate the usefulness of whole genome association and convergent evolution approaches to detect known and potentially novel mutations associated with drug resistance. Further, protein structural modelling could provide a means of predicting the impact of polymorphisms on drug efficacy in the absence of phenotypic data. These approaches could ultimately lead to novel resistance mutations to improve the design of tuberculosis control measures, such as diagnostics, and inform patient management.
    Citation
    Mycobacterium tuberculosis whole genome sequencing and protein structure modelling provides insights into anti-tuberculosis drug resistance 2016, 14 (1) BMC Medicine
    Sponsors
    JP is supported by a BBSRC PhD studentship. The project was supported by the KAUST faculty baseline research fund (KAUST-BRF) to AP. The authors wish to thank members of KAUST Bioscience Core laboratory who sequenced the isolate DNA. DBA is supported by an NHMRC CJ Martin Fellowship (APP1072476). DEVP is supported by René Rachou Research Center (CPqRR/FIOCRUZ Minas). DBA and DEVP are funded by a Newton Fund RCUK-CONFAP Grant awarded by The Medical Research Council (MRC) and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG). NF is funded by a Medical Research Council Methodology Research Fellowship (MR//K020420). TGC is funded by the Medical Research Council UK (Grant no. MR/K000551/1, MR/M01360X/1, MR/N010469/1). There are no conflicts of interests.
    Publisher
    Springer Nature
    Journal
    BMC Medicine
    DOI
    10.1186/s12916-016-0575-9
    PubMed ID
    27005572
    Additional Links
    http://www.biomedcentral.com/1741-7015/14/31
    Relations
    Is Supplemented By:
    • [Dataset]
      Phelan, J., Coll, F., McNerney, R., Ascher, D., Pires, D., Furnham, N., … Taane Clark. (2016). Mycobacterium tuberculosis whole genome sequencing and protein structure modelling provides insights into anti-tuberculosis drug resistance. Figshare. https://doi.org/10.6084/m9.figshare.c.3633278. DOI: 10.6084/m9.figshare.c.3633278 HANDLE: 10754/624138
    ae974a485f413a2113503eed53cd6c53
    10.1186/s12916-016-0575-9
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program; Computational Bioscience Research Center (CBRC)

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