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Metabolisminmammalsisregulatedbycomplexinterplayamongdifferentorgans.Fattyacidsynthesisisincreasedinwhiteadiposetissue(WAT)whenitisinhibitedintheliver.Hereweidentifyglycoproteinnon-metastaticmelanomaproteinB(Gpnmb)asoneliver鈥揥ATcross-talkfactorinvolvedinlipogenesis.Inhibitionofthehepaticsterolregulatoryelement-bindingproteinpathwayleadstoincreasedtranscriptionofGpnmbandpromotesprocessingofthemembraneproteintoasecretedform.GpnmbstimulateslipogenesisinWATandexacerbatesdiet-inducedobesityandinsulinresistance.Inhumans,Gpnmbistightlyassociatedwithbodymassindexandisastrongriskfactorforobesity.Gpnmbinhibitionbyaneutralizingantibodyorliver-specificknockdownimprovesmetabolicparameters,includingweightgainreductionandincreasedinsulinsensitivity,probablybypromotingthebeigingofWAT.TheseresultssuggestthatGpnmbisaliver-secretedfactorregulatinglipogenesisinWAT,andthatGpnmbinhibitionmayprovideatherapeuticstrategyinobesityanddiabetes.
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Fig.2:Gpnmbisproteolyticallycleavedandsecretedfromtheliver,andadenovirus-mediatedexpressionofGpnmbdrivesfatty-acid-synthesisgeneexpressioninWAT.
Fig.3:Gpnmb-ECDstimulatestheAKTsignallingpathwayviaCD44inadipocytes.
Fig.4:GpnmbincreaseslipogenesisinWAT.
Fig.5:Gpnmbpromotesdiet-inducedobesityandinsulinresistance.
Fig.6:EffectsofGpnmbneutralizationonDIOmice.

ThemicroarraydatasetdescribedinthepaperhasbeendepositedintheGeneExpressionOmnibusdatabasewithaccessionnumberGSE129283.Thedatathatsupportthefindingsofthisstudyareavailablefromthecorrespondingauthoruponreasonablerequest.
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AcknowledgementsWethankH.-H.Miao,Y.-X.Qu,J.Xu,D.Liang,B.-Y.XiangandY.Y.Liufortechnicalassistance,Y.-K.SunforhumansamplecollectionandY.Heforstatisticalanalysis.ThisworkwassupportedbygrantsfromtheNationalNaturalScienceFoundation(China;Nos.31430044,31690102,91857000and81522011),MinistryofScienceandTechnology(China;No.2016YFA0500100),theScienceandTechnologyDepartmentofHubeiProvince(No.2016CFA012)andthe111ProjectoftheMinistryofEducationofChina(No.B16036).
AuthorinformationAuthornotesTheseauthorscontributedequally:Xue-MinGong,Yun-FengLi,JieLuo,Ji-QiuWang,JianWei.
AffiliationsHubeiKeyLaboratoryofCellHomeostasis,CollegeofLifeSciences,InstituteforAdvancedStudies,WuhanUniversity,Wuhan,ChinaXue-MinGong,聽Yun-FengLi,聽JieLuo,聽JianWei,聽Ju-QiongWang,聽TingXiao,聽Xiong-JieShi聽聽Bao-LiangSongTheStateKeyLaboratoryofMolecularBiology,InstituteofBiochemistryandCellBiology,ShanghaiInstitutesforBiologicalSciences,ChineseAcademyofSciences,Shanghai,ChinaXue-MinGong,聽ChangXie聽聽Bo-LiangLiSchoolofLifeScienceandTechnology,ShanghaiTechUniversity,Shanghai,ChinaXue-MinGong聽聽WeiQiShanghaiClinicalCenterforEndocrineandMetabolicDiseases,DepartmentofEndocrinologyandMetabolism,StateKeyLaboratoryofMedicalGenomes,RuijinHospital,ShanghaiJiaoTongUniversitySchoolofMedicine,Shanghai,ChinaJi-QiuWang,聽JieHong聽聽GuangNingAuthorsXue-MinGongViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarYun-FengLiViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarJieLuoViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarJi-QiuWangViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarJianWeiViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarJu-QiongWangViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarTingXiaoViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarChangXieViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarJieHongViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarGuangNingViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarXiong-JieShiViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarBo-LiangLiViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarWeiQiViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarBao-LiangSongViewauthorpublicationsYoucanalsosearchforthisauthorinPubMedGoogleScholarContributionsB.-L.S.conceivedtheproject.X.-M.G.,Y.-F.L.,G.N.,J.-Q.W.,J.W.,B.-L.L.,W.Q.andB.-L.S.designedtheexperiments.X.-M.G.,Y.-F.L.,J.-Q.W.,T.X.,J.W.,C.X.andJ.H.performedtheexperiments.X.-M.G.,Y.-F.L.,J.L.andB.-L.S.analyzedthedata.J.-Q.W.providedandanalyzedthehumanserumsamples.X.-M.G.,Y.-F.L.,J.L.,W.Q.andB.-L.S.wrotethepaper,withinputfromothers.
CorrespondingauthorsCorrespondencetoWeiQiorBao-LiangSong.
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