University of Hertfordshire

The intracellular parasite, Trypanosoma cruzi, utilizes microvesicle release to invade host cells

Research output: Contribution to conferenceAbstractpeer-review


View graph of relations
Original languageEnglish
Number of pages22
Publication statusPublished - 15 Apr 2015
EventInternational Society for Extracellular Vesicles 1st annual meeting: ISEV meeting, 2012, Gothenburg - University of Gothenburg, Gothenburg, Sweden
Duration: 18 Apr 201221 Apr 2012


ConferenceInternational Society for Extracellular Vesicles 1st annual meeting
Abbreviated titleISEV, 2012
Internet address


Host microvesicles (MVs) help pathogens, such as the intracellular
parasite, Trypanosoma cruzi, to evade complement attack. We have
now found that the infectious metacyclic trypomastigote forms, by
interacting with host integrins, lipid rafts and stretch activated
channels, stimulate a calcium-mediated depolymerization of the
actin cytoskeleton and MV release. The release of MVs in turn
stimulates a lysosomal repair mechanism in the host cell, to plug the
breach in the plasma membrane. By using specific inhibitors of
lysosomal exocytosis and both pharmacological and siRNA-mediated
inhibition of microvesicle release, we describe a novel entry
mechanism by which the parasite opportunistically takes advantage
of a host membrane repair mechanism, to execute entry before
membrane integrity is fully restored.
Funded by: The Royal Society (London) to JI Brazilian Ministry of
Education to IC

ID: 13397280