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Concept

Défensine

Publications associées (7)

Compartmentalized PGRP expression along the dipteran Bactrocera dorsalis gut forms a zone of protection for symbiotic bacteria

Bruno Lemaitre

All metazoan guts are subject to opposing pressures wherein the immune system must eliminate pathogens while tolerating the presence of symbiotic microbiota. The Imd pathway is an essential defense against invading pathogens in insect guts, but tolerance m ...

Cell Press2022

The Drosophila Baramicin polypeptide gene protects against fungal infection

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

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

Susceptibility to infection in early life: a growing role for human genetics

Jacques Fellay, Alessandro Borghesi

The unique vulnerability to infection of newborns and young infants is generally explained by a constellation of differences between early-life immune responses and immune responses at later ages, often referred to as neonatal immune immaturity. This devel ...

SPRINGER2020

New insights on Drosophila antimicrobial peptide function in host defense and beyond

Bruno Lemaitre, Mark Austin Hanson

Since the first animal antimicrobial peptides (AMPs) were discovered in insects, Drosophila melanogaster has emerged as a powerful model for their characterization. Drosophila AMPs have been used extensively to monitor the activity of the Toll and Imd NF-κ ...

2020

Unpaired extracellular cysteine mutations of CSF3R mediate gain or loss of function

Oliver Hantschel, Tim Kükenshöner

Exclusive of membrane-proximal mutations seen commonly in chronic neutrophilic leukemia (e.g. T618I), functionally defective mutations in the extracellular domain of the granulocyte colony-stimulating factor receptor (CSF3R) have been reported only in seve ...

American Association for Cancer Research2017

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, Maroun Bou Sleiman, Claudine Danielle Patricia Öngen, Olivier Binggeli

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

Functional Analysis of PGRP-LA in Drosophila Immunity

Bruno Lemaitre, Juan Camilo Paredes Escobar

PeptidoGlycan Recognition Proteins (PGRPs) are key regulators of the insect innate antibacterial response. Even if they have been intensively studied, some of them have yet unknown functions. Here, we present a functional analysis of PGRP-LA, an as yet unc ...

Public Library of Science2013