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Experimental infection of cattle with Mycobacterium tuberculosis isolates shows the attenuation of the human tubercle bacillus for cattle

Villarreal-Ramos, Bernardo, Berg, Stefan, Whelan, Adam, Holbert, Sebastien, Carreras, Florence, Salguero Bodes, Francisco, Khatri, Bhagwati, Malone, Kerri M., Rue-Albrecht, Kevin, Shaughnessy, Ronan , Smyth, Alicia M., Ameni, Gobena, Aseffa, Abraham, Sarradin, Pierre, Winter, Nathalie, Vordermeier, Martin and Gordon, Stephen V. (2017) Experimental infection of cattle with Mycobacterium tuberculosis isolates shows the attenuation of the human tubercle bacillus for cattle Scientific Reports.

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Abstract

The Mycobacterium tuberculosis complex (MTBC) is the collective term given to the group of bacteria that cause tuberculosis (TB) in mammals. It has been reported that M. tuberculosis H37Rv, a standard reference MTBC strain, is attenuated in cattle compared to Mycobacterium bovis. However, as M. tuberculosis H37Rv was isolated in the early 1930s, and genetic variants are known to exist, we sought to revisit this question of attenuation of M. tuberculosis for cattle by performing a bovine experimental infection with a recent M. tuberculosis isolate. Here we report infection of cattle using M. bovis AF2122/97, M. tuberculosis H37Rv, and M. tuberculosis BTB1558, the latter isolated in 2008 during a TB surveillance project in Ethiopian cattle. We show that both M. tuberculosis strains caused reduced gross and histopathology in cattle compared to M. bovis. Using M. tuberculosis H37Rv and M. bovis AF2122/97 as the extremes in terms of infection outcome, we used RNA-Seq analysis to explore differences in the peripheral response to infection as a route to identify biomarkers of progressive disease in contrast to a more quiescent, latent infection. Our work shows the attenuation of M. tuberculosis strains for cattle, and emphasizes the potential of the bovine model as a ‘One Health’ approach to inform human TB biomarker development and post-exposure vaccine development.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Veterinary Medicine
Authors :
NameEmailORCID
Villarreal-Ramos, BernardoUNSPECIFIEDUNSPECIFIED
Berg, StefanUNSPECIFIEDUNSPECIFIED
Whelan, AdamUNSPECIFIEDUNSPECIFIED
Holbert, SebastienUNSPECIFIEDUNSPECIFIED
Carreras, FlorenceUNSPECIFIEDUNSPECIFIED
Salguero Bodes, Franciscof.salguerobodes@surrey.ac.ukUNSPECIFIED
Khatri, BhagwatiUNSPECIFIEDUNSPECIFIED
Malone, Kerri M.UNSPECIFIEDUNSPECIFIED
Rue-Albrecht, KevinUNSPECIFIEDUNSPECIFIED
Shaughnessy, RonanUNSPECIFIEDUNSPECIFIED
Smyth, Alicia M.UNSPECIFIEDUNSPECIFIED
Ameni, GobenaUNSPECIFIEDUNSPECIFIED
Aseffa, AbrahamUNSPECIFIEDUNSPECIFIED
Sarradin, PierreUNSPECIFIEDUNSPECIFIED
Winter, NathalieUNSPECIFIEDUNSPECIFIED
Vordermeier, MartinUNSPECIFIEDUNSPECIFIED
Gordon, Stephen V.UNSPECIFIEDUNSPECIFIED
Date : 2017
Identification Number : 10.1101/202663
Copyright Disclaimer : © The authors 2017
Depositing User : Clive Harris
Date Deposited : 19 Dec 2017 15:47
Last Modified : 19 Dec 2017 15:48
URI: http://epubs.surrey.ac.uk/id/eprint/845454

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