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© Valérie Choumet
Mosquitoes were orally infected with the chikungunya virus. Midguts were dissected at day 5 post-infection, fixed and permeabilised. Virus is shown in red (anti-E2 protein, cyanine 3), the actin network in green (phalloidin 548) and nuclei in blue (DAPI).
Publication : Blood

Plasmodium falciparum STEVOR proteins impact erythrocyte mechanical properties

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Blood - 21 Nov 2011

Sanyal S, Egée S, Bouyer G, Perrot S, Safeukui I, Bischoff E, Buffet P, Deitsch KW, Mercereau-Puijalon O, David PH, Templeton TJ, Lavazec C

Link to Pubmed [PMID] – 22106347

Blood 2012 Jan;119(2):e1-8

Infection of erythrocytes with the human malaria parasite, Plasmodium falciparum, results in dramatic changes to the host cell structure and morphology. The predicted functional localization of the STEVOR proteins at the erythrocyte surface suggests that they may be involved in parasite-induced modifications of the erythrocyte membrane during parasite development. To address the biologic function of STEVOR proteins, we subjected a panel of stevor transgenic parasites and wild-type clonal lines exhibiting different expression levels for stevor genes to functional assays exploring parasite-induced modifications of the erythrocyte membrane. Using this approach, we show that stevor expression impacts deformability of the erythrocyte membrane. This process may facilitate parasite sequestration in deep tissue vasculature.

http://www.ncbi.nlm.nih.gov/pubmed/22106347