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Negative Regulation by Amidase PGRPs Shapes the Drosophila Antibacterial Response and Protects the Fly from Innocuous Infection

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New immunomodulatory roles of lymphatic endothelium and implications for immunotherapy

Efthymia Vokali

The lymphatic system serves a critical role in fluid homeostasis, lipid metabolism and immune surveillance. The growing appreciation of its implication in various diseases challenges the conventional view of lymphatics as a passive transport system. Tradit ...

EPFL2016

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Insects commonly harbor facultative bacterial endosymbionts, such as Wolbachia and Spiroplasma species, that are vertically transmitted from mothers to their offspring. These endosymbiontic bacteria increase their propagation by manipulating host reproduct ...

American Society for Microbiology2016

Infection Dynamics and Immune Response in a Newly Described Drosophila-Trypanosomatid Association

Bruno Lemaitre, Anna Dostalova

Trypanosomatid parasites are significant causes of human disease and are ubiquitous in insects. Despite the importance of Drosophila melanogaster as a model of infection and immunity and a long awareness that trypanosomatid infection is common in the genus ...

American Society for Microbiology2015

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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

The contribution of the host stress response to the pathogenesis of Pseudomonas entomophila in the Drosophila intestine

Sveta Chakrabarti

Recently, several studies done in Drosophila have revealed that efficient and rapid recovery from bacterial infection in the gut is possible only when bacterial clearance by the immune system is coordinated with repair through renewal of the epithelium dam ...

EPFL2013

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

Intestinal homeostasis is achieved, in part, by the integration of a complex set of mechanisms that eliminate pathogens and tolerate the indigenous microbiota. Drosophila melanogaster feeds on microorganism-enriched matter and therefore has developed effic ...

Nature Publishing Group2013

Tissue- and ligand-specific sensing of gram-negative infection in drosophila by PGRP-LC isoforms and PGRP-LE

Bruno Lemaitre

The Drosophila antimicrobial response is one of the best characterized systems of pattern recognition receptor-mediated defense in metazoans. Drosophila senses Gram-negative bacteria via two peptidoglycan recognition proteins (PGRPs), membrane-bound PGRP-L ...

Amer Assoc Immunologists2012

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Peptidoglycan is an essential and specific component of the bacterial cell wall and therefore is an ideal recognition signature for the immune system. Peptidoglycan recognition proteins (PGRPs) are conserved from insects to mammals and able to bind PGN (no ...

Public Library of Science2011

Recognition and response to microbial infection in Drosophila

Bruno Lemaitre, Nichole Broderick

This chapter discusses the mechanisms whereby Drosophila recognize foreign microbes, the signalling systems that regulate adapted responses against them, and the effector mechanisms used to control them. It first focuses on the so-called systemic antimicro ...

Oxford University Press2009