2024
Glis2 is an early effector of polycystin signaling and a target for therapy in polycystic kidney disease
Zhang C, Rehman M, Tian X, Pei S, Gu J, Bell T, Dong K, Tham M, Cai Y, Wei Z, Behrens F, Jetten A, Zhao H, Lek M, Somlo S. Glis2 is an early effector of polycystin signaling and a target for therapy in polycystic kidney disease. Nature Communications 2024, 15: 3698. PMID: 38693102, PMCID: PMC11063051, DOI: 10.1038/s41467-024-48025-6.Peer-Reviewed Original ResearchConceptsMouse models of autosomal dominant polycystic kidney diseaseModel of autosomal dominant polycystic kidney diseasePolycystin signalingAutosomal dominant polycystic kidney diseasePolycystin-1Polycystic kidney diseaseTreat autosomal dominant polycystic kidney diseaseGlis2Primary ciliaKidney tubule cellsSignaling pathwayMouse modelDominant polycystic kidney diseasePotential therapeutic targetTranslatomeAntisense oligonucleotidesKidney diseasePolycystinMouse kidneyFunctional effectorsCyst formationTherapeutic targetInactivationFunctional targetPharmacological targets
2022
XBP1 Activation Reduces Severity of Polycystic Kidney Disease due to a Nontruncating Polycystin-1 Mutation in Mice
Krappitz M, Bhardwaj R, Dong K, Staudner T, Yilmaz DE, Pioppini C, Westergerling P, Ruemmele D, Hollmann T, Nguyen TA, Cai Y, Gallagher AR, Somlo S, Fedeles S. XBP1 Activation Reduces Severity of Polycystic Kidney Disease due to a Nontruncating Polycystin-1 Mutation in Mice. Journal Of The American Society Of Nephrology 2022, 34: 110-121. PMID: 36270750, PMCID: PMC10101557, DOI: 10.1681/asn.2021091180.Peer-Reviewed Original ResearchConceptsPolycystin-1Polycystin-2Functional polycystin-1Amino acid substitution mutationsAutosomal dominant polycystic kidney diseaseIntegral membrane proteinsTranscription factor XBP1Unfolded protein responsePost-translational maturationAcid substitution mutationsEndoplasmic reticulum chaperoneCiliary traffickingXBP1 activityChaperone functionIntegral membraneActive XBP1Polycystic kidney diseaseMembrane proteinsPC1 functionsPrimary ciliaProtein responseHypomorphic mutationsTransgenic activationSubstitution mutationsTransgenic expression
2021
Interdependent Regulation of Polycystin Expression Influences Starvation-Induced Autophagy and Cell Death
Decuypere JP, Van Giel D, Janssens P, Dong K, Somlo S, Cai Y, Mekahli D, Vennekens R. Interdependent Regulation of Polycystin Expression Influences Starvation-Induced Autophagy and Cell Death. International Journal Of Molecular Sciences 2021, 22: 13511. PMID: 34948309, PMCID: PMC8706473, DOI: 10.3390/ijms222413511.Peer-Reviewed Original ResearchConceptsProximal tubular epithelial cellsAutosomal dominant polycystic kidney diseaseEarly-stage ADPKD patientsCell deathPC2 expressionDominant polycystic kidney diseaseTubular epithelial cellsRenal cell survivalPolycystin-1Polycystic kidney diseaseCell survivalPolycystin-2Basal autophagyAutophagic cell survivalCell death resistanceADPKD progressionKidney diseaseADPKD patientsLess cell deathPC1 levelsChronic starvationHealthy individualsDuct cellsEpithelial cellsDeath
2014
Altered trafficking and stability of polycystins underlie polycystic kidney disease
Cai Y, Fedeles SV, Dong K, Anyatonwu G, Onoe T, Mitobe M, Gao JD, Okuhara D, Tian X, Gallagher AR, Tang Z, Xie X, Lalioti MD, Lee AH, Ehrlich BE, Somlo S. Altered trafficking and stability of polycystins underlie polycystic kidney disease. Journal Of Clinical Investigation 2014, 124: 5129-5144. PMID: 25365220, PMCID: PMC4348948, DOI: 10.1172/jci67273.Peer-Reviewed Original ResearchConceptsG-protein-coupled receptor proteolytic sitePolycystic kidney diseaseKidney diseaseGPS cleavageAutosomal dominant polycystic kidney diseaseMissense mutationsDominant polycystic kidney diseasePolycystin-1Polycystin-2Murine modelSevere formPathogenic missense mutationsPKD1 mutationsCOOH-terminal fragmentDiseaseMissense variantsExpression levelsFunctional assaysCell-based systemsAltered trafficking
2011
A genetic interaction network of five genes for human polycystic kidney and liver diseases defines polycystin-1 as the central determinant of cyst formation
Fedeles SV, Tian X, Gallagher AR, Mitobe M, Nishio S, Lee SH, Cai Y, Geng L, Crews CM, Somlo S. A genetic interaction network of five genes for human polycystic kidney and liver diseases defines polycystin-1 as the central determinant of cyst formation. Nature Genetics 2011, 43: 639-647. PMID: 21685914, PMCID: PMC3547075, DOI: 10.1038/ng.860.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApoptosisBlotting, WesternCell ProliferationCystsFemaleGlucosidasesImmunoenzyme TechniquesImmunoprecipitationIntracellular Signaling Peptides and ProteinsLiver DiseasesMaleMiceMice, Inbred C57BLMice, TransgenicMutationPolycystic Kidney DiseasesReceptors, Cell SurfaceTRPP Cation Channels
2010
Polycystin-2 Activation by Inositol 1,4,5-Trisphosphate-induced Ca2+ Release Requires Its Direct Association with the Inositol 1,4,5-Trisphosphate Receptor in a Signaling Microdomain*
Sammels E, Devogelaere B, Mekahli D, Bultynck G, Missiaen L, Parys JB, Cai Y, Somlo S, De Smedt H. Polycystin-2 Activation by Inositol 1,4,5-Trisphosphate-induced Ca2+ Release Requires Its Direct Association with the Inositol 1,4,5-Trisphosphate Receptor in a Signaling Microdomain*. Journal Of Biological Chemistry 2010, 285: 18794-18805. PMID: 20375013, PMCID: PMC2881802, DOI: 10.1074/jbc.m109.090662.Peer-Reviewed Original ResearchConceptsAutosomal dominant polycystic kidney diseaseDominant polycystic kidney diseasePolycystic kidney diseaseKidney diseaseGlutathione S-transferase pulldown experimentsEndoplasmic reticulumTrisphosphate receptorAgonist-induced intracellularTerminal ligand-binding domainMouse renal epithelial cellsTerminal cytoplasmic tailLigand-binding domainAdenoviral expression systemRenal epithelial cellsSignaling microdomainPathological mutantsPulldown experimentsTrisphosphate-induced Ca2Cytoplasmic tailAcidic clusterPolycystin-1Polycystin-2TRPP2Epithelial cellsExpression systemRegulation of ciliary trafficking of polycystin-2 and the pathogenesis of autosomal dominant polycystic kidney disease.
Cai Y, Tang Z. Regulation of ciliary trafficking of polycystin-2 and the pathogenesis of autosomal dominant polycystic kidney disease. Journal Of Central South University. Medical Sciences. 2010, 35: 93-9. PMID: 20197605, DOI: 10.3969/j.issn.1672-7347.2010.02.001.Peer-Reviewed Original ResearchConceptsAutosomal dominant polycystic kidney diseasePolycystic kidney diseaseDominant polycystic kidney diseaseKidney diseasePathogenesis of ADPKDRenal epithelial cellsAccumulated evidenceEpithelial cellsKidney cystsDiseasePathogenesisPossible roleDisorder characteristicsPolycystin-1Polycystin-2Primary cilia
2009
Polycystin-1 C-terminal Cleavage Is Modulated by Polycystin-2 Expression*
Bertuccio CA, Chapin HC, Cai Y, Mistry K, Chauvet V, Somlo S, Caplan MJ. Polycystin-1 C-terminal Cleavage Is Modulated by Polycystin-2 Expression*. Journal Of Biological Chemistry 2009, 284: 21011-21026. PMID: 19491093, PMCID: PMC2742866, DOI: 10.1074/jbc.m109.017756.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SubstitutionAmino AcidsAnimalsCalciumCell NucleusChlorocebus aethiopsCOS CellsExtracellular SpaceGenes, ReporterHumansIntracellular SpaceMiceMutant ProteinsProteasome Endopeptidase ComplexProtein Processing, Post-TranslationalProtein TransportStructure-Activity RelationshipTRPP Cation Channels
2008
Regulation of Polycystin‐1 C terminal cleavage by Polycystin‐2
Bertuccio C, Cai Y, Somlo S, Caplan M. Regulation of Polycystin‐1 C terminal cleavage by Polycystin‐2. The FASEB Journal 2008, 22: 942.9-942.9. DOI: 10.1096/fasebj.22.1_supplement.942.9.Peer-Reviewed Original Research
2006
Polycystin-2 traffics to cilia independently of polycystin-1 by using an N-terminal RVxP motif
Geng L, Okuhara D, Yu Z, Tian X, Cai Y, Shibazaki S, Somlo S. Polycystin-2 traffics to cilia independently of polycystin-1 by using an N-terminal RVxP motif. Journal Of Cell Science 2006, 119: 1383-1395. PMID: 16537653, DOI: 10.1242/jcs.02818.Peer-Reviewed Original Research
2005
Polycystin-2 Regulates Proliferation and Branching Morphogenesis in Kidney Epithelial Cells*
Grimm DH, Karihaloo A, Cai Y, Somlo S, Cantley LG, Caplan MJ. Polycystin-2 Regulates Proliferation and Branching Morphogenesis in Kidney Epithelial Cells*. Journal Of Biological Chemistry 2005, 281: 137-144. PMID: 16278216, DOI: 10.1074/jbc.m507845200.Peer-Reviewed Original ResearchConceptsPolycystin-2Kidney epithelial cellsPolycystin-1Cell proliferationRegulation of tubulogenesisWild-type proteinMultiple fluid-filled cystsAutosomal dominant polycystic kidney diseaseTubule formationEpithelial cellsExtracellular-related kinaseRegulatory machineryPolycystin proteinsBranching morphogenesisNegative regulatorRespective proteinsGenes PKD1Regulates ProliferationChannel mutantsMorphogenesisFluid-filled cystsCell growthProper growthChannel activityProtein
2004
The N-terminal Extracellular Domain Is Required for Polycystin-1-dependent Channel Activity*
Babich V, Zeng WZ, Yeh BI, Ibraghimov-Beskrovnaya O, Cai Y, Somlo S, Huang CL. The N-terminal Extracellular Domain Is Required for Polycystin-1-dependent Channel Activity*. Journal Of Biological Chemistry 2004, 279: 25582-25589. PMID: 15060061, DOI: 10.1074/jbc.m402829200.Peer-Reviewed Original ResearchCalcium Dependence of Polycystin-2 Channel Activity Is Modulated by Phosphorylation at Ser812 *
Cai Y, Anyatonwu G, Okuhara D, Lee KB, Yu Z, Onoe T, Mei CL, Qian Q, Geng L, Wiztgall R, Ehrlich BE, Somlo S. Calcium Dependence of Polycystin-2 Channel Activity Is Modulated by Phosphorylation at Ser812 *. Journal Of Biological Chemistry 2004, 279: 19987-19995. PMID: 14742446, DOI: 10.1074/jbc.m312031200.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBinding SitesBiotinylationCalciumCasein Kinase IICell MembraneDNA, ComplementaryEndoplasmic ReticulumGenes, DominantGlutathione TransferaseGlycosylationMembrane ProteinsMiceMice, Inbred BALB CMicroscopy, FluorescenceMutationPhosphatesPhosphorylationPrecipitin TestsProtein Serine-Threonine KinasesProtein Structure, TertiaryReverse Transcriptase Polymerase Chain ReactionSerineTime FactorsTRPP Cation ChannelsConceptsPolycystin-2Non-phosphorylated formChannel activityCation channelsCultured epithelial cellsActivation/inactivationPolycystic kidney diseaseProtein phosphorylationSubstitution mutantsNon-selective cation channelsConstitutive phosphorylationDivalent cation channelsPolycystin-1Substrate domainEndoplasmic reticulumPhosphorylationSingle-channel studiesVivo analysisControl cellsEpithelial cellsAutosomal dominant polycystic kidney diseaseDominant polycystic kidney diseaseOpen probabilityCellsCK2
2003
Analysis of the Polycystins in Aortic Vascular Smooth Muscle Cells
Qian Q, Li M, Cai Y, Ward CJ, Somlo S, Harris PC, Torres VE. Analysis of the Polycystins in Aortic Vascular Smooth Muscle Cells. Journal Of The American Society Of Nephrology 2003, 14: 2280-2287. PMID: 12937304, DOI: 10.1097/01.asn.0000080185.38113.a3.Peer-Reviewed Original ResearchConceptsAutosomal dominant polycystic kidney diseaseVascular smooth muscle cellsSmooth muscle cellsAortic vascular smooth muscle cellsMuscle cellsSarcoplasmic reticulumCause of deathDominant polycystic kidney diseasePolycystic kidney diseasePolycystin-2Polycystin-1Kidney diseaseVascular phenotypeImmuno-gold electron microscopyADPKD proteinsTriton-X extractionPresent studyVivo interactionDense plaquesCell surface biotinylationCell surfacePlasma membranePolycystinsCellsSurface localizationPolycystin-1 Distribution Is Modulated by Polycystin-2 Expression in Mammalian Cells*
Grimm DH, Cai Y, Chauvet V, Rajendran V, Zeltner R, Geng L, Avner ED, Sweeney W, Somlo S, Caplan MJ. Polycystin-1 Distribution Is Modulated by Polycystin-2 Expression in Mammalian Cells*. Journal Of Biological Chemistry 2003, 278: 36786-36793. PMID: 12840011, DOI: 10.1074/jbc.m306536200.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlotting, WesternCell LineCell MembraneCells, CulturedCOS CellsDNA, ComplementaryEndoplasmic ReticulumGene Expression RegulationMembrane ProteinsMiceMice, TransgenicMicroscopy, FluorescenceModels, BiologicalMutationPrecipitin TestsProtein BindingProtein BiosynthesisProteinsRecombinant Fusion ProteinsRNA, MessengerTransfectionTRPP Cation ChannelsConceptsPolycystin-1Polycystin-2Mammalian cellsLevel of expressionPolycystin-2 expressionEndoplasmic reticulumCell surfaceCOS-7 cellsNull cell lineRelative expression levelsSubcellular localizationFusion proteinGradient of expressionExpression levelsProteinCell linesPolycystinsAutosomal dominant polycystic kidney diseaseDominant polycystic kidney diseaseDivergent patternsExpressionPolycystic kidney diseaseReticulumCellsLocalization
2002
Expression of PKD1 and PKD2 Transcripts and Proteins in Human Embryo and during Normal Kidney Development
Chauvet V, Qian F, Boute N, Cai Y, Phakdeekitacharoen B, Onuchic LF, Attié-Bitach T, Guicharnaud L, Devuyst O, Germino GG, Gubler MC. Expression of PKD1 and PKD2 Transcripts and Proteins in Human Embryo and during Normal Kidney Development. American Journal Of Pathology 2002, 160: 973-983. PMID: 11891195, PMCID: PMC1867156, DOI: 10.1016/s0002-9440(10)64919-x.Peer-Reviewed Original ResearchConceptsPolycystin-1Kidney developmentPolycystin-2Expression patternsPKD1 expressionHuman genetic disordersLarge transmembrane proteinCell-matrix interactionsNormal kidney developmentMutations of PKD1Expression of PKD1Northern blot analysisGenes decreasesTransmembrane proteinHuman embryogenesisEndodermal derivativesSpatiotemporal expressionUreteric budPKD1 transcriptPKD2Transmembrane glycoproteinTranscriptsPKD1Nephron developmentProtein