Publications de Igor Iatsenko | EPFL Graph Search

The Drosophila Baramicin polypeptide gene protects against fungal infection

Bruno Lemaitre, Igor Iatsenko, Alice Marra, Mark Austin Hanson

The fruit fly Drosophila melanogaster combats microbial infection by producing a battery of effector peptides that are secreted into the haemolymph. Technical difficulties prevented the investigation of these short effector genes until the recent advent of ...

2021

Iron sequestration by transferrin 1 mediates nutritional immunity in Drosophila melanogaster

Jean Philippe Boquete, Bruno Lemaitre, Jasquelin Peña, Igor Iatsenko, Alice Marra

Iron sequestration is a recognized innate immune mechanism against invading pathogens mediated by iron-binding proteins called transferrins. Despite many studies on antimicrobial activity of transferrins in vitro, their specific in vivo functions are poorl ...

National Academy of Sciences2020

More Than Black or White: Melanization and Toll Share Regulatory Serine Proteases in Drosophila

Bruno Lemaitre, Jan Paul Dudzic, Igor Iatsenko, Mark Austin Hanson

The melanization response is an important defense mechanism in arthropods. This reaction is mediated by phenoloxidases (POs), which are activated by complex extracellular serine protease (SP) cascades. Here, we investigate the role of SPs in the melanizati ...

2019

Microbiota-Derived Lactate Activates Production of Reactive Oxygen Species by the Intestinal NADPH Oxidase Nox and Shortens Drosophila Lifespan

Jean Philippe Boquete, Bruno Lemaitre, Igor Iatsenko

Commensal microbes colonize the gut epithelia of virtually all animals and provide several benefits to their hosts. Changes in commensal populations can lead to dysbiosis, which is associated with numerous pathologies and decreased lifespan. Peptidoglycan ...

2018

PGRP-SD, an Extracellular Pattern-Recognition Receptor, Enhances Peptidoglycan-Mediated Activation of the Drosophila Imd Pathway

Bruno Lemaitre, Igor Iatsenko

Activation of the innate immune response in Metazoans is initiated through the recognition of microbes by host pattern-recognition receptors. In Drosophila, diaminopimelic acid ( DAP)-containing peptidoglycan from Gram-negative bacteria is detected by the ...

Elsevier2016