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Stapels, Daphne A C; Hill, Peter W S; Westermann, Alexander J; Fisher, Robert A; Thurston, Teresa L; Saliba, Antoine-Emmanuel; Blommestein, Isabelle; Vogel, Jörg; Helaine, Sophie
Science (American Association for the Advancement of Science), 12/2018, Letnik: 362, Številka: 6419Journal Article
Many bacterial infections are hard to treat and tend to relapse, possibly due to the presence of antibiotic-tolerant persisters. In vitro, persister cells appear to be dormant. After uptake of species by macrophages, nongrowing persisters also occur, but their physiological state is poorly understood. In this work, we show that persisters arising during macrophage infection maintain a metabolically active state. Persisters reprogram macrophages by means of effectors secreted by the pathogenicity island 2 type 3 secretion system. These effectors dampened proinflammatory innate immune responses and induced anti-inflammatory macrophage polarization. Such reprogramming allowed nongrowing cells to survive for extended periods in their host. Persisters undermining host immune defenses might confer an advantage to the pathogen during relapse once antibiotic pressure is relieved.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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