A Bacterial Toxin with Analgesic Properties: ...
Document type :
Article dans une revue scientifique: Article original
DOI :
PMID :
Title :
A Bacterial Toxin with Analgesic Properties: Hyperpolarization of DRG Neurons by Mycolactone
Author(s) :
Song, Ok-Ryul [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Kim, Han-Byul [Auteur]
Jouny, Samuel [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Ricard, Isabelle [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Vandeputte, Alexandre [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Deboosere, Nathalie [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Marion, Estelle [Auteur]
ATOMycA [CRCINA-ÉQUIPE 6]
Queval, Christophe [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Lesport, Pierre [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Bourinet, Emmanuel [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Henrion, Daniel [Auteur]
Biologie Neurovasculaire et Mitochondriale Intégrée [BNMI]
Oh, Seog Bae [Auteur]
Lebon, Guillaume [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Sandoz, Guillaume [Auteur]
Institut de Biologie Valrose [IBV]
Yeramian, Edouard [Auteur correspondant]
Bioinformatique structurale - Structural Bioinformatics
Marsollier, Laurent [Auteur correspondant]
ATOMycA [CRCINA-ÉQUIPE 6]
Brodin, Priscille [Auteur correspondant]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Kim, Han-Byul [Auteur]
Jouny, Samuel [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Ricard, Isabelle [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Vandeputte, Alexandre [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Deboosere, Nathalie [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Marion, Estelle [Auteur]
ATOMycA [CRCINA-ÉQUIPE 6]
Queval, Christophe [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Lesport, Pierre [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Bourinet, Emmanuel [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Henrion, Daniel [Auteur]
Biologie Neurovasculaire et Mitochondriale Intégrée [BNMI]
Oh, Seog Bae [Auteur]
Lebon, Guillaume [Auteur]
Institut de Génomique Fonctionnelle [IGF]
Sandoz, Guillaume [Auteur]
Institut de Biologie Valrose [IBV]
Yeramian, Edouard [Auteur correspondant]
Bioinformatique structurale - Structural Bioinformatics
Marsollier, Laurent [Auteur correspondant]
ATOMycA [CRCINA-ÉQUIPE 6]
Brodin, Priscille [Auteur correspondant]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Journal title :
TOXINS
Pages :
227
Publisher :
MDPI
Publication date :
2017-07-18
English keyword(s) :
high-content screening
membrane potential
image-based assay
Buruli ulcer
mycolactone
AT 2 receptors
DRG neurons
membrane potential
image-based assay
Buruli ulcer
mycolactone
AT 2 receptors
DRG neurons
HAL domain(s) :
Sciences du Vivant [q-bio]/Cancer
English abstract : [en]
Mycolactone, a polyketide molecule produced by Mycobacterium ulcerans, is the etiological agent of Buruli ulcer. This lipid toxin is endowed with pleiotropic effects, presents cytotoxic effects at high doses, and notably ...
Show more >Mycolactone, a polyketide molecule produced by Mycobacterium ulcerans, is the etiological agent of Buruli ulcer. This lipid toxin is endowed with pleiotropic effects, presents cytotoxic effects at high doses, and notably plays a pivotal role in host response upon colonization by the bacillus. Most remarkably, mycolactone displays intriguing analgesic capabilities: the toxin suppresses or alleviates the pain of the skin lesions it inflicts. We demonstrated that the analgesic capability of mycolactone was not attributable to nerve damage, but instead resulted from the triggering of a cellular pathway targeting AT 2 receptors (angiotensin II type 2 receptors; AT 2 R), and leading to potassium-dependent hyperpolarization. This demonstration paves the way to new nature-inspired analgesic protocols. In this direction, we assess here the hyperpolarizing properties of mycolactone on nociceptive neurons. We developed a dedicated medium-throughput assay based on membrane potential changes, and visualized by confocal microscopy of bis-oxonol-loaded Dorsal Root Ganglion (DRG) neurons. We demonstrate that mycolactone at non-cytotoxic doses triggers the hyperpolarization of DRG neuronsShow less >
Show more >Mycolactone, a polyketide molecule produced by Mycobacterium ulcerans, is the etiological agent of Buruli ulcer. This lipid toxin is endowed with pleiotropic effects, presents cytotoxic effects at high doses, and notably plays a pivotal role in host response upon colonization by the bacillus. Most remarkably, mycolactone displays intriguing analgesic capabilities: the toxin suppresses or alleviates the pain of the skin lesions it inflicts. We demonstrated that the analgesic capability of mycolactone was not attributable to nerve damage, but instead resulted from the triggering of a cellular pathway targeting AT 2 receptors (angiotensin II type 2 receptors; AT 2 R), and leading to potassium-dependent hyperpolarization. This demonstration paves the way to new nature-inspired analgesic protocols. In this direction, we assess here the hyperpolarizing properties of mycolactone on nociceptive neurons. We developed a dedicated medium-throughput assay based on membrane potential changes, and visualized by confocal microscopy of bis-oxonol-loaded Dorsal Root Ganglion (DRG) neurons. We demonstrate that mycolactone at non-cytotoxic doses triggers the hyperpolarization of DRG neuronsShow less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
ANR Project :
Source :
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