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IFNs Modify the Proteome of Legionella-Containing Vacuoles and Restrict Infection Via IRG1-Derived Itaconic Acid
被引:215
作者:
Naujoks, Jan
[1
]
Tabeling, Christoph
[1
]
Dill, Brian D.
[2
,12
]
Hoffmann, Christine
[3
]
Brown, Andrew S.
[4
]
Kunze, Mareike
[1
]
Kempa, Stefan
[5
]
Peter, Andrea
[1
]
Mollenkopf, Hans-Joachim
[6
]
Dorhoi, Anca
[6
]
Kershaw, Olivia
[7
]
Gruber, Achim D.
[7
]
Sander, Leif E.
[1
]
Witzenrath, Martin
[1
]
Herold, Susanne
[8
,9
]
Nerlich, Andreas
[1
]
Hocke, Andreas C.
[1
]
van Driel, Ian
[4
]
Suttorp, Norbert
[1
]
Bedoui, Sammy
[10
]
Hilbi, Hubert
[3
,11
]
Trost, Matthias
[2
]
Opitz, Bastian
[1
]
机构:
[1] Charite, Dept Internal Med Infect Dis & Pulm Med, D-13353 Berlin, Germany
[2] Univ Dundee, MRC Prot Phosphorylat Unit, Dundee, Scotland
[3] Univ Munich, Max Von Pettenkofer Inst, Munich, Germany
[4] Univ Melbourne, Dept Biochem & Mol Biol, Melbourne, Vic, Australia
[5] Max Delbruck Ctr Mol Med, Integrat Metab & Prote, Inst Med Syst Biol, Berlin, Germany
[6] Max Planck Inst Infect Biol, Berlin, Germany
[7] Free Univ Berlin, Dept Vet Pathol, Berlin, Germany
[8] Univ Giessen, Med Klin 2, D-35390 Giessen, Germany
[9] Univ Giessen, Marburg Lung Ctr, D-35390 Giessen, Germany
[10] Univ Melbourne, Dept Microbiol & Immunol, Melbourne, Vic, Australia
[11] Univ Zurich, Inst Med Microbiol, Zurich, Switzerland
[12] Rockefeller Univ, Prote Resource Ctr, 1230 York Ave, New York, NY 10021 USA
关键词:
CELL-AUTONOMOUS IMMUNITY;
C VIRUS-REPLICATION;
PNEUMOPHILA INFECTION;
TOXOPLASMA-GONDII;
INTERFERON-GAMMA;
INTRACELLULAR PATHOGENS;
BACTERICIDAL ACTIVITY;
ALVEOLAR MACROPHAGES;
MITOCHONDRIAL ROS;
EPITHELIAL-CELLS;
D O I:
10.1371/journal.ppat.1005408
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
Macrophages can be niches for bacterial pathogens or antibacterial effector cells depending on the pathogen and signals from the immune system. Here we show that type I and II IFNs are master regulators of gene expression during Legionella pneumophila infection, and activators of an alveolar macrophage-intrinsic immune response that restricts bacterial growth during pneumonia. Quantitative mass spectrometry revealed that both IFNs substantially modify Legionella-containing vacuoles, and comparative analyses reveal distinct subsets of transcriptionally and spatially IFN-regulated proteins. Immune-responsive gene (IRG) 1 is induced by IFNs in mitochondria that closely associate with Legionella-containing vacuoles, and mediates production of itaconic acid. This metabolite is bactericidal against intravacuolar L. pneumophila as well as extracellular multidrug-resistant Gram-positive and -negative bacteria. Our study explores the overall role IFNs play in inducing substantial remodeling of bacterial vacuoles and in stimulating production of IRG1-derived itaconic acid which targets intravacuolar pathogens. IRG1 or its product itaconic acid might be therapeutically targetable to fight intracellular and drug-resistant bacteria.
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页数:27
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