Journal
TRENDS IN MICROBIOLOGY
Volume 29, Issue 2, Pages 127-141Publisher
CELL PRESS
DOI: 10.1016/j.tim.2020.06.008
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Funding
- Marsden Fund of the Royal Society of New Zealand [13-UOO-085]
- Health Research Council of New Zealand [17/082]
- University of Otago Research Committee
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The review summarizes the mechanisms of cell-to-cell spread by intracellular bacterial pathogens utilizing actin-based motility, with a focus on protrusion formation and internalization. It also examines the dynamic behavior of bacterial populations during spread and highlights recent findings of intercellular spread by an extracellular bacterial pathogen.
Several intracellular bacterial pathogens, including Listeria monocytogenes, Shigella flexerni, and Rickettsia spp. use an actin-based motility process to spread in mammalian cell monolayers. Cell-to-cell spread is mediated by protrusive structures that contain bacteria encased in the host cell plasma membrane. These protrusions, which form in infected host cells, are internalized by neighboring cells. In this review, we summarize key findings on cell-to-cell spread, focusing on recent work on mechanisms of protrusion formation and internalization. We also discuss the dynamic behavior of bacterial populations during spread, and highlight recent findings showing that intercellular spread by an extracellular bacterial pathogen.
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