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Quereda JJ, Morel C, Lopez-Montero N, Ziveri J, Rolland S, Grenier T, Aulner N, Danckaert A, Charbit A, Enninga J, Cossart P, Pizarro-Cerdá J. A role for Taok2 in Listeria monocytogenes vacuolar escape. J Infect Dis 2020; 225:1005-1010. [PMID: 32582947 PMCID: PMC8922001 DOI: 10.1093/infdis/jiaa367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/19/2020] [Indexed: 01/28/2023] Open
Abstract
The bacterial pathogen Listeria monocytogenes invades host cells, ruptures the internalization vacuole, and reaches the cytosol for replication. A high-content small interfering RNA (siRNA) microscopy screen allowed us to identify epithelial cell factors involved in L. monocytogenes vacuolar rupture, including the serine/threonine kinase Taok2. Kinase activity inhibition using a specific drug validated a role for Taok2 in favoring L. monocytogenes cytoplasmic access. Furthermore, we showed that Taok2 recruitment to L. monocytogenes vacuoles requires the presence of pore-forming toxin listeriolysin O. Overall, our study identified the first set of host factors modulating L. monocytogenes vacuolar rupture and cytoplasmic access in epithelial cells.
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Affiliation(s)
- Juan J Quereda
- Institut Pasteur, Unité des Interactions Bactéries-Cellules, Paris, France.,Departamento Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos. Facultad de Veterinaria. Universidad Cardenal Herrera-CEU, CEU Universities. Valencia,. Spain
| | - Camille Morel
- Institut Pasteur, Unité des Interactions Bactéries-Cellules, Paris, France
| | - Noelia Lopez-Montero
- Institut Pasteur, Unité Dynamique des Interactions Hôte-Pathogène, Paris, France.,CNRS UMR3691, Paris, France
| | - Jason Ziveri
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,INSERM U1151 - CNRS UMR 8253, Institut Necker-Enfants Malades, Paris, France
| | - Steven Rolland
- Institut Pasteur, Unité des Interactions Bactéries-Cellules, Paris, France
| | - Théodore Grenier
- Univ Lyon, Institut de Génomique Fonctionnelle de Lyon, ENS de Lyon, CNRS UMR 5242, Lyon, France
| | - Nathalie Aulner
- Institut Pasteur, UTechS Photonics Bioimaging/C2RT , Paris, France
| | - Anne Danckaert
- Institut Pasteur, UTechS Photonics Bioimaging/C2RT , Paris, France
| | - Alain Charbit
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,INSERM U1151 - CNRS UMR 8253, Institut Necker-Enfants Malades, Paris, France
| | - Jost Enninga
- Institut Pasteur, Unité Dynamique des Interactions Hôte-Pathogène, Paris, France.,CNRS UMR3691, Paris, France
| | - Pascale Cossart
- Institut Pasteur, Unité des Interactions Bactéries-Cellules, Paris, France
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Uribe-Querol E, Rosales C. Control of Phagocytosis by Microbial Pathogens. Front Immunol 2017; 8:1368. [PMID: 29114249 PMCID: PMC5660709 DOI: 10.3389/fimmu.2017.01368] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/05/2017] [Indexed: 12/17/2022] Open
Abstract
Phagocytosis is a fundamental process of cells to capture and ingest foreign particles. Small unicellular organisms such as free-living amoeba use this process to acquire food. In pluricellular organisms, phagocytosis is a universal phenomenon that all cells are able to perform (including epithelial, endothelial, fibroblasts, etc.), but some specialized cells (such as neutrophils and macrophages) perform this very efficiently and were therefore named professional phagocytes by Rabinovitch. Cells use phagocytosis to capture and clear all particles larger than 0.5 µm, including pathogenic microorganisms and cellular debris. Phagocytosis involves a series of steps from recognition of the target particle, ingestion of it in a phagosome (phagocytic vacuole), maturation of this phagosome into a phagolysosome, to the final destruction of the ingested particle in the robust antimicrobial environment of the phagolysosome. For the most part, phagocytosis is an efficient process that eliminates invading pathogens and helps maintaining homeostasis. However, several pathogens have also evolved different strategies to prevent phagocytosis from proceeding in a normal way. These pathogens have a clear advantage to perpetuate the infection and continue their replication. Here, we present an overview of the phagocytic process with emphasis on the antimicrobial elements professional phagocytes use. We also summarize the current knowledge on the microbial strategies different pathogens use to prevent phagocytosis either at the level of ingestion, phagosome formation, and maturation, and even complete escape from phagosomes.
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Affiliation(s)
- Eileen Uribe-Querol
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Rosales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Kühn S, Lopez-Montero N, Chang YY, Sartori-Rupp A, Enninga J. Imaging macropinosomes during Shigella infections. Methods 2017; 127:12-22. [PMID: 28522322 DOI: 10.1016/j.ymeth.2017.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/11/2017] [Accepted: 05/10/2017] [Indexed: 12/21/2022] Open
Abstract
Macropinocytosis is the uptake of extracellular fluid within vesicles of varying size that takes place during numerous cellular processes in a large variety of cells. A growing number of pathogens, including viruses, parasites, and bacteria are known to induce macropinocytosis during their entry into targeted host cells. We have recently discovered that the human enteroinvasive, bacterial pathogen Shigella causes in situ macropinosome formation during its entry into epithelial cells. These infection-associated macropinosomes are not generated to ingest the bacteria, but are instead involved in Shigella's intracellular niche formation. They make contacts with the phagocytosed shigellae to promote vacuolar membrane rupture and their cytosolic release. Here, we provide an overview of the different imaging approaches that are currently used to analyze macropinocytosis during infectious processes with a focus on Shigella entry. We detail the advantages and disadvantages of genetically encoded reporters as well as chemical probes to trace fluid phase uptake. In addition, we report how such reporters can be combined with ultrastructural approaches for correlative light electron microscopy either in thin sections or within large volumes. The combined imaging techniques introduced here provide a detailed characterization of macropinosomes during bacterial entry, which, apart from Shigella, are relevant for numerous other ones, including Salmonella, Brucella or Mycobacteria.
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Affiliation(s)
- Sonja Kühn
- Department of Cell Biology and Infection, Institut Pasteur, Paris, France
| | | | - Yuen-Yan Chang
- Department of Cell Biology and Infection, Institut Pasteur, Paris, France
| | - Anna Sartori-Rupp
- Department of Cell Biology and Infection, Institut Pasteur, Paris, France
| | - Jost Enninga
- Department of Cell Biology and Infection, Institut Pasteur, Paris, France.
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