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Autophagy inhibition blunts PDGFRA adipose progenitors’ cell-autonomous fibrogenic response to high-fat diet

Identifieur interne : 000003 ( an2020/Analysis ); précédent : 000002; suivant : 000004

Autophagy inhibition blunts PDGFRA adipose progenitors’ cell-autonomous fibrogenic response to high-fat diet

Auteurs : Geneviève Marcelin [France] ; Carla Da Cunha [France] ; Camille Gamblin [France] ; Nadine Suffee [France] ; Christine Rouault [France] ; Arnaud Leclerc [France] ; Amélie Lacombe [France] ; Nataliya Sokolovska [France] ; Emmanuel Gautier [France] ; Karine Clément [France] ; Isabelle Dugail [France]

Source :

RBID : Hal:inserm-02492192

English descriptors

Abstract

Adipose tissue (AT) fibrosis in obesity compromises adipocyte functions and responses to intervention-10 induced weight loss. It is driven by AT progenitors with dual fibro/adipogenic potential, but pro-fibrogenic pathways activated in obesity remain to be deciphered. To investigate the role of macroautophagy/autop-hagy in AT fibrogenesis, we used Pdgfra-Cre Ert2 transgenic mice to create conditional deletion of Atg7 alleles in AT progenitor cells (atg7 cKO) and examined sex-dependent, depot-specific AT remodeling in high-fat diet (HFD)-fed mice. Mice with atg7 cKO had markedly decreased extracellular matrix (ECM) gene expression in 15 visceral, subcutaneous, and epicardial adipose depots compared to Atg7 lox/lox littermates. ECM gene program regulation by autophagy inhibition occurred independently of changes in the mass of fat tissues or adipocyte numbers of specific depots, and cultured preadipocytes treated with pharmacological or siRNA-mediated autophagy disruptors could mimic these effects. We found that autophagy inhibition promotes global cell-autonomous remodeling of the paracrine TGF-BMP family landscape, whereas ECM gene modulation was 20 independent of the autophagic regulation of GTF2IRD1. The progenitor-specific mouse model of ATG7 inhibition confirms the requirement of autophagy for white/beige adipocyte turnover, and combined to in vitro experiments, reveal progenitor autophagy dependence for AT fibrogenic response to HFD, through the paracrine remodeling of TGF-BMP factors balance.


Url:
DOI: 10.1080/15548627.2020.1717129


Affiliations:


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Hal:inserm-02492192

Le document en format XML

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<orgName type="acronym">INSERM</orgName>
<desc>
<address>
<addrLine>101, rue de Tolbiac, 75013 Paris </addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.inserm.fr</ref>
</desc>
</org>
</tutelle>
<tutelle active="#struct-413221" type="direct">
<org type="institution" xml:id="struct-413221" status="VALID">
<orgName>Sorbonne Université</orgName>
<orgName type="acronym">SU</orgName>
<date type="start">2018-01-01</date>
<desc>
<address>
<addrLine>21 rue de l’École de médecine - 75006 Paris</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.sorbonne-universite.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
</affiliation>
</author>
<author>
<name sortKey="Dugail, Isabelle" sort="Dugail, Isabelle" uniqKey="Dugail I" first="Isabelle" last="Dugail">Isabelle Dugail</name>
<affiliation wicri:level="1">
<hal:affiliation type="laboratory" xml:id="struct-1002956" status="INCOMING">
<orgName>Nutrition et obésités: approches systémiques (nutriomics)</orgName>
<orgName type="acronym">UMR-S 1269 INSERM - Sorbonne Université</orgName>
<desc>
<address>
<country key="FR"></country>
</address>
</desc>
<listRelation>
<relation name="UMR-S 1269" active="#struct-303623" type="direct"></relation>
<relation active="#struct-413221" type="direct"></relation>
</listRelation>
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<tutelle name="UMR-S 1269" active="#struct-303623" type="direct">
<org type="institution" xml:id="struct-303623" status="VALID">
<idno type="IdRef">026388278</idno>
<orgName>Institut National de la Santé et de la Recherche Médicale</orgName>
<orgName type="acronym">INSERM</orgName>
<desc>
<address>
<addrLine>101, rue de Tolbiac, 75013 Paris </addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.inserm.fr</ref>
</desc>
</org>
</tutelle>
<tutelle active="#struct-413221" type="direct">
<org type="institution" xml:id="struct-413221" status="VALID">
<orgName>Sorbonne Université</orgName>
<orgName type="acronym">SU</orgName>
<date type="start">2018-01-01</date>
<desc>
<address>
<addrLine>21 rue de l’École de médecine - 75006 Paris</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.sorbonne-universite.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1080/15548627.2020.1717129</idno>
<series>
<title level="j">Autophagy</title>
<idno type="ISSN">1554-8627</idno>
<imprint>
<date type="datePub">2020-01-28</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="mix" xml:lang="en">
<term>Abbreviations: CQ: chloroquine</term>
<term>ECM: extracellular matrix</term>
<term>EpiAT: epididymal adipose tissue</term>
<term>GTF2IRD1: 25 general transcription factor II I repeat domain-containing 1</term>
<term>HFD: high-fat diet</term>
<term>KO: knockout</term>
<term>OvAT: ovarian adipose tissue</term>
<term>PDGFR: platelet derived growth factor receptor</term>
<term>ScAT: subcutaneous adipose tissue</term>
<term>TGF-BMP: transforming growth factor-bone morphogenic protein ARTICLE HISTORY KEYWORDS ATG7</term>
<term>chloroquine</term>
<term>collagen</term>
<term>extracellular matrix</term>
<term>fibrosis</term>
<term>obesity</term>
<term>subcutaneous adipose tissue</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">
<p>Adipose tissue (AT) fibrosis in obesity compromises adipocyte functions and responses to intervention-10 induced weight loss. It is driven by AT progenitors with dual fibro/adipogenic potential, but pro-fibrogenic pathways activated in obesity remain to be deciphered. To investigate the role of macroautophagy/autop-hagy in AT fibrogenesis, we used Pdgfra-Cre Ert2 transgenic mice to create conditional deletion of Atg7 alleles in AT progenitor cells (atg7 cKO) and examined sex-dependent, depot-specific AT remodeling in high-fat diet (HFD)-fed mice. Mice with atg7 cKO had markedly decreased extracellular matrix (ECM) gene expression in 15 visceral, subcutaneous, and epicardial adipose depots compared to Atg7 lox/lox littermates. ECM gene program regulation by autophagy inhibition occurred independently of changes in the mass of fat tissues or adipocyte numbers of specific depots, and cultured preadipocytes treated with pharmacological or siRNA-mediated autophagy disruptors could mimic these effects. We found that autophagy inhibition promotes global cell-autonomous remodeling of the paracrine TGF-BMP family landscape, whereas ECM gene modulation was 20 independent of the autophagic regulation of GTF2IRD1. The progenitor-specific mouse model of ATG7 inhibition confirms the requirement of autophagy for white/beige adipocyte turnover, and combined to in vitro experiments, reveal progenitor autophagy dependence for AT fibrogenic response to HFD, through the paracrine remodeling of TGF-BMP factors balance.</p>
</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>France</li>
</country>
</list>
<tree>
<country name="France">
<noRegion>
<name sortKey="Marcelin, Genevieve" sort="Marcelin, Genevieve" uniqKey="Marcelin G" first="Geneviève" last="Marcelin">Geneviève Marcelin</name>
</noRegion>
<name sortKey="Clement, Karine" sort="Clement, Karine" uniqKey="Clement K" first="Karine" last="Clément">Karine Clément</name>
<name sortKey="Da Cunha, Carla" sort="Da Cunha, Carla" uniqKey="Da Cunha C" first="Carla" last="Da Cunha">Carla Da Cunha</name>
<name sortKey="Dugail, Isabelle" sort="Dugail, Isabelle" uniqKey="Dugail I" first="Isabelle" last="Dugail">Isabelle Dugail</name>
<name sortKey="Gamblin, Camille" sort="Gamblin, Camille" uniqKey="Gamblin C" first="Camille" last="Gamblin">Camille Gamblin</name>
<name sortKey="Gautier, Emmanuel" sort="Gautier, Emmanuel" uniqKey="Gautier E" first="Emmanuel" last="Gautier">Emmanuel Gautier</name>
<name sortKey="Lacombe, Amelie" sort="Lacombe, Amelie" uniqKey="Lacombe A" first="Amélie" last="Lacombe">Amélie Lacombe</name>
<name sortKey="Leclerc, Arnaud" sort="Leclerc, Arnaud" uniqKey="Leclerc A" first="Arnaud" last="Leclerc">Arnaud Leclerc</name>
<name sortKey="Rouault, Christine" sort="Rouault, Christine" uniqKey="Rouault C" first="Christine" last="Rouault">Christine Rouault</name>
<name sortKey="Sokolovska, Nataliya" sort="Sokolovska, Nataliya" uniqKey="Sokolovska N" first="Nataliya" last="Sokolovska">Nataliya Sokolovska</name>
<name sortKey="Suffee, Nadine" sort="Suffee, Nadine" uniqKey="Suffee N" first="Nadine" last="Suffee">Nadine Suffee</name>
</country>
</tree>
</affiliations>
</record>

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