Publications de Olivier Binggeli

The Black cells phenotype is caused by a point mutation in the Drosophila pro-phenoloxidase 1 gene that triggers melanization and hematopoietic defects

Bruno Lemaitre, Olivier Binggeli, Maroun Bou Sleiman, Lise Bertin

Melanization contributes to arthropod-specific innate immunity through deposition of melanin at wound sites or around parasites, with concomitant release of microbicidal reactive oxygen species. Melanization requires sequential activation of proteolytic en ...

Elsevier2015

The Nimrod transmembrane receptor Eater is required for hemocyte attachment to the sessile compartment in Drosophila melanogaster

Olivier Burri, Bruno Lemaitre, Olivier Binggeli, Andrew Jonathan Bretscher

Eater is an EGF-like repeat transmembrane receptor of the Nimrod family and is expressed in Drosophila hemocytes. Eater was initially identified for its role in phagocytosis of both Gram-positive and Gram-negative bacteria. We have deleted eater and show t ...

Company Of Biologists Ltd2015

Methods to study Drosophila immunity

Bruno Lemaitre, Olivier Binggeli, Andrew Jonathan Bretscher

Innate immune mechanisms are well conserved throughout evolution, and many theoretical concepts, molecular pathways and gene networks are applicable to invertebrate model organisms as much as vertebrate ones. Drosophila immunity research benefits from an e ...

Elsevier2014

Prophenoloxidase Activation Is Required for Survival to Microbial Infections in Drosophila

Bruno Lemaitre, Olivier Binggeli

The melanization reaction is a major immune response in Arthropods and involves the rapid synthesis of melanin at the site of infection and injury. A key enzyme in the melanization process is phenoloxidase (PO), which catalyzes the oxidation of phenols to ...

Public Library of Science2014

Role and regulation of the melanization reaction in Drosophila immune response

Olivier Binggeli

In arthropods, the melanization reaction consists in the rapid synthesis of melanin at the site of infection and injury. A key enzyme in the melanization process is phenoloxidase (PO), which catalyzes the oxidation of phenols to quinones that subsequently ...

EPFL2013

Genetic evidence for a protective role of the peritrophic matrix against intestinal bacterial infection in Drosophila melanogaster

Bruno Lemaitre, Onya Opota, Olivier Binggeli, Takayuki Kuraishi

The peritrophic matrix (PM) forms a layer composed of chitin and glycoproteins that lines the insect intestinal lumen. This physical barrier plays a role analogous to that of mucous secretions of the vertebrate digestive tract and is thought to protect the ...

National Academy of Sciences2011