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© Christine Schmitt, Sophie Goyard, Jean-Marc Panaud
Trypanosoma vivax - forme sanguine. Responsable de la trypanosomose animale ou Nagana.

About

TRANSMISSION OF AFRICAN TRYPANOSOMES

African trypanosomes are flagellated protist parasites that cause sleeping sickness in humans and nagana in cattle in Sub-Saharan Africa. These parasites are exclusively transmitted by the bite of the tsetse fly. Successful transmission is the outcome of crosstalk between the trypanosome and its insect host acting as a vector. This enables the parasite to undergo successive rounds of differentiation, proliferation and migration, culminating in the infection of a new mammalian host.

The savannah tsetse fly Glossina morsitans
The savannah tsetse fly Glossina morsitans

Our group is studying various aspects of the parasite cyclical development in the tsetse fly, including carbohydrate metabolism, motility and flagellum sensing, with the perspectives of blocking parasite development  by paratransgenic approaches in the tsetse fly vector.

Mesocyclic trypanosome in the posterior midgut of a tsetse fly
Mesocyclic trypanosome (green flagellum) in the posterior midgut of a tsetse fly (actin network in red and DNA in blue)

Today, we are focusing on the early steps of infection in the mammalian host after the infective bite in order to unravel the differentiation, proliferation and migration events occuring during the disease onset.

Trypanosoma brucei procyclic form from tsetse midgut observed by SEM
Trypanosoma brucei procyclic form from tsetse midgut

But our main interest is currently the biology of dermal trypanosomes, with the purposes of developping new approaches for diagnosis and treatment in the context of the planned elimination of sleeping sickness.

To implement these research programs, our group is now affiliated to two Institut Pasteur in Paris, France and in Conakry, Guinea.

 


FOCUS

Sleeping sickness: one step further in improving diagnosis

https://www.pasteur.fr/en/home/research-journal/news/sleeping-sickness-one-step-further-improving-diagnosis

Skin-dwelling trypanosomes: the missing link towards elimination?

https://www.pasteur.fr/en/sleeping-sickness-parasites-found-hiding-skin


 

Former Members

2000
2000
Name
Position
2015
2020
Estefania Calvo Alvarez
Post-doc
2019
2019
Filippo Moramarco
PhD Student
2015
2017
Constentin Dieme
Post-doc
2013
2017
Eloïse Bertiaux
PhD Student
2011
2015
Sylvie Perrot
Technician
2011
2013
Cher Pheng Ooi
Post-doc
2013
2013
Sarah Schuster
Undergraduate Student
2009
2012
Ines Subota
PhD Student

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Email: rotureau@pasteur.fr