Experimental selection of long‐term intracellular mycobacteria

Some intracellular bacteria are known to cause long‐term infections that last decades without compromising the viability of the host. Although of critical importance, the adaptations that intracellular bacteria undergo during this long process of residence in a host cell environment remain obscure....

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Autores principales: Vazquez, Cristina Lourdes, Lerner, Thomas R., Kasmapour, Bahram, Pei, Gang, Gronow, Achim, Bianco, María Veronica, Blanco, Federico Carlos, Bleck, Christopher K.E., Geffers, Robert, Bigi, Fabiana, Abraham, Wolf-Rainer, Gutierrez, Maximiliano Gabriel
Formato: Artículo
Lenguaje:Inglés
Publicado: Wiley 2019
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12123/4858
https://onlinelibrary.wiley.com/doi/full/10.1111/cmi.12303#references-section
https://doi.org/10.1111/cmi.12303
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author Vazquez, Cristina Lourdes
Lerner, Thomas R.
Kasmapour, Bahram
Pei, Gang
Gronow, Achim
Bianco, María Veronica
Blanco, Federico Carlos
Bleck, Christopher K.E.
Geffers, Robert
Bigi, Fabiana
Abraham, Wolf-Rainer
Gutierrez, Maximiliano Gabriel
author_browse Abraham, Wolf-Rainer
Bianco, María Veronica
Bigi, Fabiana
Blanco, Federico Carlos
Bleck, Christopher K.E.
Geffers, Robert
Gronow, Achim
Gutierrez, Maximiliano Gabriel
Kasmapour, Bahram
Lerner, Thomas R.
Pei, Gang
Vazquez, Cristina Lourdes
author_facet Vazquez, Cristina Lourdes
Lerner, Thomas R.
Kasmapour, Bahram
Pei, Gang
Gronow, Achim
Bianco, María Veronica
Blanco, Federico Carlos
Bleck, Christopher K.E.
Geffers, Robert
Bigi, Fabiana
Abraham, Wolf-Rainer
Gutierrez, Maximiliano Gabriel
author_sort Vazquez, Cristina Lourdes
collection INTA Digital
description Some intracellular bacteria are known to cause long‐term infections that last decades without compromising the viability of the host. Although of critical importance, the adaptations that intracellular bacteria undergo during this long process of residence in a host cell environment remain obscure. Here, we report a novel experimental approach to study the adaptations of mycobacteria imposed by a long‐term intracellular lifestyle. Selected Mycobacterium bovis BCG through continuous culture in macrophages underwent an adaptation process leading to impaired phenolic glycolipids (PGL) synthesis, improved usage of glucose as a carbon source and accumulation of neutral lipids. These changes correlated with increased survival of mycobacteria in macrophages and mice during re‐infection and also with the specific expression of stress‐ and survival‐related genes. Our findings identify bacterial traits implicated in the establishment of long‐term cellular infections and represent a tool for understanding the physiological states and the environment that bacteria face living in fluctuating intracellular environments.
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institution Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina)
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spelling INTA48582019-04-09T14:31:50Z Experimental selection of long‐term intracellular mycobacteria Vazquez, Cristina Lourdes Lerner, Thomas R. Kasmapour, Bahram Pei, Gang Gronow, Achim Bianco, María Veronica Blanco, Federico Carlos Bleck, Christopher K.E. Geffers, Robert Bigi, Fabiana Abraham, Wolf-Rainer Gutierrez, Maximiliano Gabriel Mycobacterium Experimentos de Largo Plazo Líquido Intracellular Mycobacterium Bovis Glicolípidos Supervivencia Long Term Experiments Intracellular Fluid Glycolipids Survival Some intracellular bacteria are known to cause long‐term infections that last decades without compromising the viability of the host. Although of critical importance, the adaptations that intracellular bacteria undergo during this long process of residence in a host cell environment remain obscure. Here, we report a novel experimental approach to study the adaptations of mycobacteria imposed by a long‐term intracellular lifestyle. Selected Mycobacterium bovis BCG through continuous culture in macrophages underwent an adaptation process leading to impaired phenolic glycolipids (PGL) synthesis, improved usage of glucose as a carbon source and accumulation of neutral lipids. These changes correlated with increased survival of mycobacteria in macrophages and mice during re‐infection and also with the specific expression of stress‐ and survival‐related genes. Our findings identify bacterial traits implicated in the establishment of long‐term cellular infections and represent a tool for understanding the physiological states and the environment that bacteria face living in fluctuating intracellular environments. Instituto de Biotecnología Fil: Vazquez, Cristina Lourdes. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Helmholtz Centre for Infection Research. Research Group Phagosome Biology; Alemania Fil: Lerner, Thomas R. National Institute for Medical Research. Medical Research Council. Division of Mycobacterial Research; Gran Bretaña Fil: Kasmapour, Bahram. Helmholtz Centre for Infection Research. Research Group Phagosome Biology; Alemania Fil: Pei, Gang. Helmholtz Centre for Infection Research. Research Group Phagosome Biology; Alemania Fil: Gronow, Achim. Helmholtz Centre for Infection Research. Research Group Phagosome Biology; Alemania Fil: Bianco, María Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Blanco, Federico Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Bleck, Christopher K.E. University of Basel. Centre for Cellular Imaging and NanoAnalytics, Structural Biology and Biophysics, Biozentrum, Mattenstrasse 26; Suiza Fil: Geffers, Robert. Helmholtz Centre for Infection Research. Research Group Genome Analytics; Alemania Fil: Bigi, Fabiana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Abraham, Wolf-Rainer. Helmholtz Centre for Infection Research. Research Group Chemical Microbiology; Alemania Fil: Gutierrez, Maximiliano Gabriel. Helmholtz Centre for Infection Research. Research Group Phagosome Biology; Alemania. National Institute for Medical Research. Medical Research Council. Division of Mycobacterial Research; Gran Bretaña 2019-04-09T14:25:13Z 2019-04-09T14:25:13Z 2014-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4858 https://onlinelibrary.wiley.com/doi/full/10.1111/cmi.12303#references-section 1462-5814 https://doi.org/10.1111/cmi.12303 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Cellular microbiology 16 (9) : 1425-1440. (September 2014)
spellingShingle Mycobacterium
Experimentos de Largo Plazo
Líquido Intracellular
Mycobacterium Bovis
Glicolípidos
Supervivencia
Long Term Experiments
Intracellular Fluid
Glycolipids
Survival
Vazquez, Cristina Lourdes
Lerner, Thomas R.
Kasmapour, Bahram
Pei, Gang
Gronow, Achim
Bianco, María Veronica
Blanco, Federico Carlos
Bleck, Christopher K.E.
Geffers, Robert
Bigi, Fabiana
Abraham, Wolf-Rainer
Gutierrez, Maximiliano Gabriel
Experimental selection of long‐term intracellular mycobacteria
title Experimental selection of long‐term intracellular mycobacteria
title_full Experimental selection of long‐term intracellular mycobacteria
title_fullStr Experimental selection of long‐term intracellular mycobacteria
title_full_unstemmed Experimental selection of long‐term intracellular mycobacteria
title_short Experimental selection of long‐term intracellular mycobacteria
title_sort experimental selection of long term intracellular mycobacteria
topic Mycobacterium
Experimentos de Largo Plazo
Líquido Intracellular
Mycobacterium Bovis
Glicolípidos
Supervivencia
Long Term Experiments
Intracellular Fluid
Glycolipids
Survival
url http://hdl.handle.net/20.500.12123/4858
https://onlinelibrary.wiley.com/doi/full/10.1111/cmi.12303#references-section
https://doi.org/10.1111/cmi.12303
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