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Dr Jeanne Salje

Dr Jeanne Salje

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Jeanne@tropmedres.ac

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Jeanne Salje

Group leader in bacterial cell biology

Microbiology

My research group studies the host-pathogen biology of the obligate intracellular bacterium Orientia tsutsugamushi. This vector-borne pathogen causes the life-threatening human disease scrub typhus, that is endemic in large parts of Asia but that is severely under-reported due to difficulties in diagnostics and surveillance. We use a combination of cell biology, biochemistry and systems biology approaches to dissect fundamental questions about the host-pathogen biology of this clinically important bacterium.

Current research is primarily focussed on the following areas: 

  • Developing improved experimental tools for O. tsutsugamushi research. These include methods for bacterial propagation and isolation, developing fluorescent labelling methods for light microscopy imaging and establishing methods for genetic manipulation of Orientia.
  • Studying the structure of the cell wall and cell surface of O. tsutsugamushi, and understanding the implications for bacterial growth and division.
  • Studying the intracellular lifecycle of O. tsutsugamushi. This includes determining molecular mechanisms of bacterial attachment and entry into host cells, escape from the endo-lysosomal pathway, and exit from infected host cells.
  • Using next generation sequencing approaches to study genome organisation and dynamics. We are particularly interested in following genome changes over time and under different selective pressures.
The intracellular life cycle of Orientia tsutsugamushi. Modified from Salje, J. PLoS Pathogens, 2017
The intracellular life cycle of Orientia tsutsugamushi. Modified from Salje, J. PLoS Pathogens, 2017
Orientia tsutsugamushi bacteria (green) inside a mouse fibroblast cell (red) 50 minutes after infection.
Orientia tsutsugamushi bacteria (green) inside a mouse fibroblast cell (red) 50 minutes after infection.

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