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The Inflammatory Bowel Disease Drug Azathioprine Induces Autophagy via mTORC1 and the Unfolded Protein Response Sensor PERK.

Identifieur interne : 000204 ( Main/Exploration ); précédent : 000203; suivant : 000205

The Inflammatory Bowel Disease Drug Azathioprine Induces Autophagy via mTORC1 and the Unfolded Protein Response Sensor PERK.

Auteurs : Kirsty M. Hooper [Royaume-Uni] ; Victor Casanova [Royaume-Uni] ; Sadie Kemp [Royaume-Uni] ; Katherine A. Staines [Royaume-Uni] ; Jack Satsangi [Royaume-Uni] ; Peter G. Barlow [Royaume-Uni] ; Paul Henderson [Royaume-Uni] ; Craig Stevens [Royaume-Uni]

Source :

RBID : pubmed:30889246

Descripteurs français

English descriptors

Abstract

BACKGROUND

Genetic studies have strongly linked autophagy to Crohn's disease (CD), and stimulating autophagy in CD patients may be therapeutically beneficial. The aim of this study was to evaluate the effect of current inflammatory bowel disease (IBD) drugs on autophagy and investigate molecular mechanisms of action and functional outcomes in relation to this cellular process.

METHODS

Autophagy marker LC3 was evaluated by confocal fluorescence microscopy and flow cytometry. Drug mechanism of action was investigated by polymerase chain reaction (PCR) array with changes in signaling pathways examined by immunoblot and quantitative reverse transcription PCR (RT-qPCR). Clearance of adherent-invasive Escherichia coli (AIEC) and levels of pro-inflammatory cytokine tumor necrosis factor alpha (TNFα) were evaluated by gentamicin protection assays and RT-qPCR, respectively. The marker LC3 was analyzed in peripheral blood mononuclear cells (PBMCs) from pediatric patients by flow cytometry.

RESULTS

Azathioprine induces autophagy via mechanisms involving modulation of mechanistic target of rapamycin (mTORC1) signaling and stimulation of the unfolded protein response (UPR) sensor PERK. Induction of autophagy with azathioprine correlated with the enhanced clearance of AIEC and dampened AIEC-induced increases in TNFα. Azathioprine induced significant increase in autophagosome bound LC3-II in PBMC populations ex vivo, supporting in vitro findings. In patients, the CD-associated ATG16L1 T300A single-nucleotide polymorphism did not attenuate azathioprine induction of autophagy.

CONCLUSIONS

Modulation of autophagy via mTORC1 and the UPR may contribute to the therapeutic efficacy of azathioprine in IBD.


DOI: 10.1093/ibd/izz039
PubMed: 30889246


Affiliations:


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<term>Adolescent (MeSH)</term>
<term>Autophagy (MeSH)</term>
<term>Azathioprine (pharmacology)</term>
<term>Case-Control Studies (MeSH)</term>
<term>Child (MeSH)</term>
<term>Escherichia coli (drug effects)</term>
<term>Escherichia coli (growth & development)</term>
<term>Escherichia coli Infections (drug therapy)</term>
<term>Escherichia coli Infections (metabolism)</term>
<term>Escherichia coli Infections (microbiology)</term>
<term>Female (MeSH)</term>
<term>Humans (MeSH)</term>
<term>Immunosuppressive Agents (pharmacology)</term>
<term>Inflammatory Bowel Diseases (drug therapy)</term>
<term>Inflammatory Bowel Diseases (metabolism)</term>
<term>Inflammatory Bowel Diseases (pathology)</term>
<term>Leukocytes, Mononuclear (drug effects)</term>
<term>Leukocytes, Mononuclear (metabolism)</term>
<term>Leukocytes, Mononuclear (pathology)</term>
<term>Male (MeSH)</term>
<term>Mechanistic Target of Rapamycin Complex 1 (genetics)</term>
<term>Mechanistic Target of Rapamycin Complex 1 (metabolism)</term>
<term>Unfolded Protein Response (drug effects)</term>
<term>eIF-2 Kinase (genetics)</term>
<term>eIF-2 Kinase (metabolism)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr">
<term>Adolescent (MeSH)</term>
<term>Agranulocytes (anatomopathologie)</term>
<term>Agranulocytes (effets des médicaments et des substances chimiques)</term>
<term>Agranulocytes (métabolisme)</term>
<term>Autophagie (MeSH)</term>
<term>Azathioprine (pharmacologie)</term>
<term>Complexe-1 cible mécanistique de la rapamycine (génétique)</term>
<term>Complexe-1 cible mécanistique de la rapamycine (métabolisme)</term>
<term>Enfant (MeSH)</term>
<term>Escherichia coli (croissance et développement)</term>
<term>Escherichia coli (effets des médicaments et des substances chimiques)</term>
<term>Femelle (MeSH)</term>
<term>Humains (MeSH)</term>
<term>Immunosuppresseurs (pharmacologie)</term>
<term>Infections à Escherichia coli (microbiologie)</term>
<term>Infections à Escherichia coli (métabolisme)</term>
<term>Infections à Escherichia coli (traitement médicamenteux)</term>
<term>Maladies inflammatoires intestinales (anatomopathologie)</term>
<term>Maladies inflammatoires intestinales (métabolisme)</term>
<term>Maladies inflammatoires intestinales (traitement médicamenteux)</term>
<term>Mâle (MeSH)</term>
<term>Réponse aux protéines mal repliées (effets des médicaments et des substances chimiques)</term>
<term>eIF-2 Kinase (génétique)</term>
<term>eIF-2 Kinase (métabolisme)</term>
<term>Études cas-témoins (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
<term>Mechanistic Target of Rapamycin Complex 1</term>
<term>eIF-2 Kinase</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>Mechanistic Target of Rapamycin Complex 1</term>
<term>eIF-2 Kinase</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en">
<term>Azathioprine</term>
<term>Immunosuppressive Agents</term>
</keywords>
<keywords scheme="MESH" qualifier="anatomopathologie" xml:lang="fr">
<term>Agranulocytes</term>
<term>Maladies inflammatoires intestinales</term>
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<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr">
<term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en">
<term>Escherichia coli</term>
<term>Leukocytes, Mononuclear</term>
<term>Unfolded Protein Response</term>
</keywords>
<keywords scheme="MESH" qualifier="drug therapy" xml:lang="en">
<term>Escherichia coli Infections</term>
<term>Inflammatory Bowel Diseases</term>
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<keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr">
<term>Agranulocytes</term>
<term>Escherichia coli</term>
<term>Réponse aux protéines mal repliées</term>
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<term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr">
<term>Complexe-1 cible mécanistique de la rapamycine</term>
<term>eIF-2 Kinase</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en">
<term>Escherichia coli Infections</term>
<term>Inflammatory Bowel Diseases</term>
<term>Leukocytes, Mononuclear</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr">
<term>Infections à Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en">
<term>Escherichia coli Infections</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Agranulocytes</term>
<term>Complexe-1 cible mécanistique de la rapamycine</term>
<term>Infections à Escherichia coli</term>
<term>Maladies inflammatoires intestinales</term>
<term>eIF-2 Kinase</term>
</keywords>
<keywords scheme="MESH" qualifier="pathology" xml:lang="en">
<term>Inflammatory Bowel Diseases</term>
<term>Leukocytes, Mononuclear</term>
</keywords>
<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr">
<term>Azathioprine</term>
<term>Immunosuppresseurs</term>
</keywords>
<keywords scheme="MESH" qualifier="traitement médicamenteux" xml:lang="fr">
<term>Infections à Escherichia coli</term>
<term>Maladies inflammatoires intestinales</term>
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<term>Adolescent</term>
<term>Autophagy</term>
<term>Case-Control Studies</term>
<term>Child</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
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<term>Adolescent</term>
<term>Autophagie</term>
<term>Enfant</term>
<term>Femelle</term>
<term>Humains</term>
<term>Mâle</term>
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<div type="abstract" xml:lang="en">
<p>
<b>BACKGROUND</b>
</p>
<p>Genetic studies have strongly linked autophagy to Crohn's disease (CD), and stimulating autophagy in CD patients may be therapeutically beneficial. The aim of this study was to evaluate the effect of current inflammatory bowel disease (IBD) drugs on autophagy and investigate molecular mechanisms of action and functional outcomes in relation to this cellular process.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>METHODS</b>
</p>
<p>Autophagy marker LC3 was evaluated by confocal fluorescence microscopy and flow cytometry. Drug mechanism of action was investigated by polymerase chain reaction (PCR) array with changes in signaling pathways examined by immunoblot and quantitative reverse transcription PCR (RT-qPCR). Clearance of adherent-invasive Escherichia coli (AIEC) and levels of pro-inflammatory cytokine tumor necrosis factor alpha (TNFα) were evaluated by gentamicin protection assays and RT-qPCR, respectively. The marker LC3 was analyzed in peripheral blood mononuclear cells (PBMCs) from pediatric patients by flow cytometry.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>RESULTS</b>
</p>
<p>Azathioprine induces autophagy via mechanisms involving modulation of mechanistic target of rapamycin (mTORC1) signaling and stimulation of the unfolded protein response (UPR) sensor PERK. Induction of autophagy with azathioprine correlated with the enhanced clearance of AIEC and dampened AIEC-induced increases in TNFα. Azathioprine induced significant increase in autophagosome bound LC3-II in PBMC populations ex vivo, supporting in vitro findings. In patients, the CD-associated ATG16L1 T300A single-nucleotide polymorphism did not attenuate azathioprine induction of autophagy.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>CONCLUSIONS</b>
</p>
<p>Modulation of autophagy via mTORC1 and the UPR may contribute to the therapeutic efficacy of azathioprine in IBD.</p>
</div>
</front>
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<DateCompleted>
<Year>2020</Year>
<Month>05</Month>
<Day>01</Day>
</DateCompleted>
<DateRevised>
<Year>2020</Year>
<Month>07</Month>
<Day>15</Day>
</DateRevised>
<Article PubModel="Print">
<Journal>
<ISSN IssnType="Electronic">1536-4844</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>25</Volume>
<Issue>9</Issue>
<PubDate>
<Year>2019</Year>
<Month>08</Month>
<Day>20</Day>
</PubDate>
</JournalIssue>
<Title>Inflammatory bowel diseases</Title>
<ISOAbbreviation>Inflamm Bowel Dis</ISOAbbreviation>
</Journal>
<ArticleTitle>The Inflammatory Bowel Disease Drug Azathioprine Induces Autophagy via mTORC1 and the Unfolded Protein Response Sensor PERK.</ArticleTitle>
<Pagination>
<MedlinePgn>1481-1496</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.1093/ibd/izz039</ELocationID>
<Abstract>
<AbstractText Label="BACKGROUND">Genetic studies have strongly linked autophagy to Crohn's disease (CD), and stimulating autophagy in CD patients may be therapeutically beneficial. The aim of this study was to evaluate the effect of current inflammatory bowel disease (IBD) drugs on autophagy and investigate molecular mechanisms of action and functional outcomes in relation to this cellular process.</AbstractText>
<AbstractText Label="METHODS">Autophagy marker LC3 was evaluated by confocal fluorescence microscopy and flow cytometry. Drug mechanism of action was investigated by polymerase chain reaction (PCR) array with changes in signaling pathways examined by immunoblot and quantitative reverse transcription PCR (RT-qPCR). Clearance of adherent-invasive Escherichia coli (AIEC) and levels of pro-inflammatory cytokine tumor necrosis factor alpha (TNFα) were evaluated by gentamicin protection assays and RT-qPCR, respectively. The marker LC3 was analyzed in peripheral blood mononuclear cells (PBMCs) from pediatric patients by flow cytometry.</AbstractText>
<AbstractText Label="RESULTS">Azathioprine induces autophagy via mechanisms involving modulation of mechanistic target of rapamycin (mTORC1) signaling and stimulation of the unfolded protein response (UPR) sensor PERK. Induction of autophagy with azathioprine correlated with the enhanced clearance of AIEC and dampened AIEC-induced increases in TNFα. Azathioprine induced significant increase in autophagosome bound LC3-II in PBMC populations ex vivo, supporting in vitro findings. In patients, the CD-associated ATG16L1 T300A single-nucleotide polymorphism did not attenuate azathioprine induction of autophagy.</AbstractText>
<AbstractText Label="CONCLUSIONS">Modulation of autophagy via mTORC1 and the UPR may contribute to the therapeutic efficacy of azathioprine in IBD.</AbstractText>
<CopyrightInformation>© 2019 Crohn’s & Colitis Foundation. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.</CopyrightInformation>
</Abstract>
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