The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella.
Metabolic pathways are now considered as intrinsic virulence attributes of pathogenic bacteria and thus represent potential targets for antibacterial strategies. Here we focused on the role of the pentose phosphate pathway (PPP) and its connections with other metabolic pathways in the pathophysiolog...
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2021
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oai:doaj.org-article:a1f4cef057854bbf88cbf8cb7ab1fa8b2021-12-02T20:00:26ZThe pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella.1553-73661553-737410.1371/journal.ppat.1009326https://doaj.org/article/a1f4cef057854bbf88cbf8cb7ab1fa8b2021-08-01T00:00:00Zhttps://doi.org/10.1371/journal.ppat.1009326https://doaj.org/toc/1553-7366https://doaj.org/toc/1553-7374Metabolic pathways are now considered as intrinsic virulence attributes of pathogenic bacteria and thus represent potential targets for antibacterial strategies. Here we focused on the role of the pentose phosphate pathway (PPP) and its connections with other metabolic pathways in the pathophysiology of Francisella novicida. The involvement of the PPP in the intracellular life cycle of Francisella was first demonstrated by studying PPP inactivating mutants. Indeed, we observed that inactivation of the tktA, rpiA or rpe genes severely impaired intramacrophage multiplication during the first 24 hours. However, time-lapse video microscopy demonstrated that rpiA and rpe mutants were able to resume late intracellular multiplication. To better understand the links between PPP and other metabolic networks in the bacterium, we also performed an extensive proteo-metabolomic analysis of these mutants. We show that the PPP constitutes a major bacterial metabolic hub with multiple connections to glycolysis, the tricarboxylic acid cycle and other pathways, such as fatty acid degradation and sulfur metabolism. Altogether our study highlights how PPP plays a key role in the pathogenesis and growth of Francisella in its intracellular niche.Héloise RytterAnne JametJason ZiveriElodie RamondMathieu CoureuilPauline Lagouge-RousseyDaniel EuphrasieFabiola TrosNicolas GoudinCerina ChhuonIvan NemazanyyFabricio Edgar de MoraesCarlos LabateIda Chiara GuerreraAlain CharbitPublic Library of Science (PLoS)articleImmunologic diseases. AllergyRC581-607Biology (General)QH301-705.5ENPLoS Pathogens, Vol 17, Iss 8, p e1009326 (2021) |
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Immunologic diseases. Allergy RC581-607 Biology (General) QH301-705.5 |
| spellingShingle |
Immunologic diseases. Allergy RC581-607 Biology (General) QH301-705.5 Héloise Rytter Anne Jamet Jason Ziveri Elodie Ramond Mathieu Coureuil Pauline Lagouge-Roussey Daniel Euphrasie Fabiola Tros Nicolas Goudin Cerina Chhuon Ivan Nemazanyy Fabricio Edgar de Moraes Carlos Labate Ida Chiara Guerrera Alain Charbit The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| description |
Metabolic pathways are now considered as intrinsic virulence attributes of pathogenic bacteria and thus represent potential targets for antibacterial strategies. Here we focused on the role of the pentose phosphate pathway (PPP) and its connections with other metabolic pathways in the pathophysiology of Francisella novicida. The involvement of the PPP in the intracellular life cycle of Francisella was first demonstrated by studying PPP inactivating mutants. Indeed, we observed that inactivation of the tktA, rpiA or rpe genes severely impaired intramacrophage multiplication during the first 24 hours. However, time-lapse video microscopy demonstrated that rpiA and rpe mutants were able to resume late intracellular multiplication. To better understand the links between PPP and other metabolic networks in the bacterium, we also performed an extensive proteo-metabolomic analysis of these mutants. We show that the PPP constitutes a major bacterial metabolic hub with multiple connections to glycolysis, the tricarboxylic acid cycle and other pathways, such as fatty acid degradation and sulfur metabolism. Altogether our study highlights how PPP plays a key role in the pathogenesis and growth of Francisella in its intracellular niche. |
| format |
article |
| author |
Héloise Rytter Anne Jamet Jason Ziveri Elodie Ramond Mathieu Coureuil Pauline Lagouge-Roussey Daniel Euphrasie Fabiola Tros Nicolas Goudin Cerina Chhuon Ivan Nemazanyy Fabricio Edgar de Moraes Carlos Labate Ida Chiara Guerrera Alain Charbit |
| author_facet |
Héloise Rytter Anne Jamet Jason Ziveri Elodie Ramond Mathieu Coureuil Pauline Lagouge-Roussey Daniel Euphrasie Fabiola Tros Nicolas Goudin Cerina Chhuon Ivan Nemazanyy Fabricio Edgar de Moraes Carlos Labate Ida Chiara Guerrera Alain Charbit |
| author_sort |
Héloise Rytter |
| title |
The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| title_short |
The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| title_full |
The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| title_fullStr |
The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| title_full_unstemmed |
The pentose phosphate pathway constitutes a major metabolic hub in pathogenic Francisella. |
| title_sort |
pentose phosphate pathway constitutes a major metabolic hub in pathogenic francisella. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2021 |
| url |
https://doaj.org/article/a1f4cef057854bbf88cbf8cb7ab1fa8b |
| work_keys_str_mv |
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