Featured Publications
Recessive loss of function of the neuronal ubiquitin hydrolase UCHL1 leads to early-onset progressive neurodegeneration
Bilguvar K, Tyagi NK, Ozkara C, Tuysuz B, Bakircioglu M, Choi M, Delil S, Caglayan AO, Baranoski JF, Erturk O, Yalcinkaya C, Karacorlu M, Dincer A, Johnson MH, Mane S, Chandra SS, Louvi A, Boggon TJ, Lifton RP, Horwich AL, Gunel M. Recessive loss of function of the neuronal ubiquitin hydrolase UCHL1 leads to early-onset progressive neurodegeneration. Proceedings Of The National Academy Of Sciences Of The United States Of America 2013, 110: 3489-3494. PMID: 23359680, PMCID: PMC3587195, DOI: 10.1073/pnas.1222732110.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge of OnsetAmino Acid SequenceBase SequenceChild, PreschoolExomeFemaleGenes, RecessiveHomozygoteHumansHydrolysisMaleModels, MolecularMolecular Sequence DataMutation, MissenseNerve DegenerationNeuronsPedigreeProtein BindingSequence Analysis, DNASubstrate SpecificitySyndromeThermodynamicsUbiquitinUbiquitin ThiolesteraseConceptsUbiquitin C-terminal hydrolase L1Upper motor neuron dysfunctionMotor neuron dysfunctionProgressive neurodegenerative syndromeEarly-onset progressive neurodegenerationChildhood-onset blindnessWhole-exome sequencingNeuron dysfunctionHomozygous missense mutationIndex caseNervous systemProgressive neurodegenerationNeurodegenerative syndromeCerebellar ataxiaHydrolase activityNear complete lossComplete lossAffected individualsConsanguineous unionsMissense mutationsRecessive lossHomozygosity mappingProper positioningReduced affinitySpasticityCombined HMG-COA reductase and prenylation inhibition in treatment of CCM
Nishimura S, Mishra-Gorur K, Park J, Surovtseva YV, Sebti SM, Levchenko A, Louvi A, Gunel M. Combined HMG-COA reductase and prenylation inhibition in treatment of CCM. Proceedings Of The National Academy Of Sciences Of The United States Of America 2017, 114: 5503-5508. PMID: 28500274, PMCID: PMC5448170, DOI: 10.1073/pnas.1702942114.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAstrocytesDiphosphonatesDrosophilaDrug Evaluation, PreclinicalDrug Therapy, CombinationEndothelial CellsFatty Acids, MonounsaturatedFemaleFluvastatinHemangioma, Cavernous, Central Nervous SystemHigh-Throughput Screening AssaysHydroxymethylglutaryl-CoA Reductase InhibitorsImidazolesIndolesMaleMAP Kinase Signaling SystemMicePregnancyProtein PrenylationZoledronic AcidConceptsCerebral cavernous malformationsTreatment of CCMsCommon vascular anomaliesPotential pharmacological treatment optionsFocal neurological deficitsPharmacological treatment optionsCCM diseaseAcute mouse modelCentral nervous systemNeurological deficitsHemorrhagic strokePharmacological therapyLesion burdenVascular deficitsSymptomatic lesionsCombination therapyTreatment optionsVascular anomaliesGlial cellsCavernous malformationsMouse modelPrimary astrocytesNervous systemDrug AdministrationSustained inhibition
2021
Neuroinvasion of SARS-CoV-2 in human and mouse brain
Song E, Zhang C, Israelow B, Lu-Culligan A, Prado AV, Skriabine S, Lu P, Weizman OE, Liu F, Dai Y, Szigeti-Buck K, Yasumoto Y, Wang G, Castaldi C, Heltke J, Ng E, Wheeler J, Alfajaro MM, Levavasseur E, Fontes B, Ravindra NG, Van Dijk D, Mane S, Gunel M, Ring A, Kazmi SAJ, Zhang K, Wilen CB, Horvath TL, Plu I, Haik S, Thomas JL, Louvi A, Farhadian SF, Huttner A, Seilhean D, Renier N, Bilguvar K, Iwasaki A. Neuroinvasion of SARS-CoV-2 in human and mouse brain. Journal Of Experimental Medicine 2021, 218: e20202135. PMID: 33433624, PMCID: PMC7808299, DOI: 10.1084/jem.20202135.Peer-Reviewed Original ResearchConceptsSARS-CoV-2Central nervous systemSARS-CoV-2 neuroinvasionImmune cell infiltratesCOVID-19 patientsType I interferon responseMultiple organ systemsCOVID-19I interferon responseHuman brain organoidsNeuroinvasive capacityCNS infectionsCell infiltrateNeuronal infectionPathological featuresCortical neuronsRespiratory diseaseDirect infectionCerebrospinal fluidNervous systemMouse brainInterferon responseOrgan systemsHuman ACE2Infection
2015
Functional Synergy between Cholecystokinin Receptors CCKAR and CCKBR in Mammalian Brain Development
Nishimura S, Bilgüvar K, Ishigame K, Sestan N, Günel M, Louvi A. Functional Synergy between Cholecystokinin Receptors CCKAR and CCKBR in Mammalian Brain Development. PLOS ONE 2015, 10: e0124295. PMID: 25875176, PMCID: PMC4398320, DOI: 10.1371/journal.pone.0124295.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornBone Morphogenetic Protein 7Cell MovementChemokine CXCL12CholecystokininCorpus CallosumEmbryo, MammalianGene Expression ProfilingGene Expression Regulation, DevelopmentalHomozygoteHumansInterneuronsMiceMice, KnockoutMidline Thalamic NucleiMutationNeocortexNeuropilin-2Receptor, Cholecystokinin AReceptor, Cholecystokinin BReceptors, N-Methyl-D-AspartateSignal TransductionTranscriptomeConceptsCCK receptorsBrain developmentMammalian neocortical developmentCentral nervous systemCortical interneuron migrationHomozygous mutant miceMammalian brain developmentPeripheral organsReceptor lossCorpus callosumCortical developmentPostnatal brainAbundant neuropeptideNervous systemInterneuron migrationMutant miceEmbryonic neocortexNeocortical developmentReceptorsPeptide hormonesG proteinsCholecystokininReciprocal expressionCCKBRBrainHeparin is an activating ligand of the orphan receptor tyrosine kinase ALK
Murray PB, Lax I, Reshetnyak A, Ligon GF, Lillquist JS, Natoli EJ, Shi X, Folta-Stogniew E, Gunel M, Alvarado D, Schlessinger J. Heparin is an activating ligand of the orphan receptor tyrosine kinase ALK. Science Signaling 2015, 8: ra6. PMID: 25605972, DOI: 10.1126/scisignal.2005916.Peer-Reviewed Original ResearchConceptsAnaplastic lymphoma kinaseReceptor tyrosine kinasesActivation of RTKsCultured neuroblastoma cellsReceptor tyrosine kinase anaplastic lymphoma kinaseActivation of ALKStroma contributesLung adenocarcinomaLymphoma kinaseNervous systemExtracellular domainDrug resistanceNeuroblastoma cellsAberrant activationALK activityHeparinCancerPotential mechanismsGenetic amplificationActivationTyrosine kinaseAdenocarcinomaNeuroblastomaTherapyProgression
2011
CCM2 expression during prenatal development and adult human neocortex
Tanriover G, Sozen B, Gunel M, Demir N. CCM2 expression during prenatal development and adult human neocortex. International Journal Of Developmental Neuroscience 2011, 29: 509-514. PMID: 21569831, DOI: 10.1016/j.ijdevneu.2011.04.006.Peer-Reviewed Original ResearchConceptsAdult human neocortexCerebral cavernous malformationsHuman neocortexNeuroglial precursor cellsPrenatal developmentMeans of immunohistochemistryCentral nervous systemWestern blot analysisHuman brain developmentVascular malformationsAdult neocortexGlial cellsCavernous malformationsCCM lesionsVascular endotheliumNervous systemVascular channelsBlood vessel formationArterial endotheliumBrain developmentNeocortexExpression patternsEndotheliumPrecursor cellsCCM lociLoss of cerebral cavernous malformation 3 (Ccm3) in neuroglia leads to CCM and vascular pathology
Louvi A, Chen L, Two AM, Zhang H, Min W, Günel M. Loss of cerebral cavernous malformation 3 (Ccm3) in neuroglia leads to CCM and vascular pathology. Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 3737-3742. PMID: 21321212, PMCID: PMC3048113, DOI: 10.1073/pnas.1012617108.Peer-Reviewed Original ResearchConceptsNeural cellsCerebral cavernous malformationsCell-nonautonomous mechanismsPathogenesis of CCMsRho GTPase signalingCell-autonomous mechanismsCell-autonomous roleCerebral cavernous malformation 3Cell death 10Central nervous systemConditional mouse mutantsNonautonomous functionsCytoskeletal remodelingRNA sequencingCCM3/Mouse mutantsNeurovascular unitNonautonomous mechanismsProper developmentVascular lesionsGene 1Function mutationsNervous systemAutonomous mechanismsLate functions
2009
CCM2 and CCM3 proteins contribute to vasculogenesis and angiogenesis in human placenta.
Tanriover G, Seval Y, Sati L, Gunel M, Demir N. CCM2 and CCM3 proteins contribute to vasculogenesis and angiogenesis in human placenta. Histology And Histopathology 2009, 24: 1287-94. PMID: 19688696, DOI: 10.14670/hh-24.1287.Peer-Reviewed Original ResearchMeSH KeywordsApoptosis Regulatory ProteinsCarrier ProteinsCase-Control StudiesCentral Nervous System NeoplasmsFemaleHemangioma, Cavernous, Central Nervous SystemHumansImmunohistochemistryMembrane ProteinsNeovascularization, PathologicPlacentaPregnancyPregnancy Trimester, FirstPregnancy Trimester, ThirdProto-Oncogene ProteinsConceptsCerebral cavernous malformationsVascular endotheliumBlood vessel formationHuman placentaMature intermediate villiVascular malformationsStem villiTerm placentaVessel formationIntermediate villiNormal brain parenchymaMeans of immunohistochemistryCentral nervous systemEndothelium-lined vascular channelsWestern blot analysisEarly pregnancyBrain parenchymaModerate immunostainingCavernous malformationsNervous systemVascular channelsPlacental developmentPlacentaEndotheliumLess expression
2004
KRIT1/Cerebral Cavernous Malformation 1 Protein Localizes to Vascular Endothelium, Astrocytes, and Pyramidal Cells of the Adult Human Cerebral Cortex
Guzeloglu-Kayisli O, Amankulor NM, Voorhees J, Luleci G, Lifton RP, Gunel M. KRIT1/Cerebral Cavernous Malformation 1 Protein Localizes to Vascular Endothelium, Astrocytes, and Pyramidal Cells of the Adult Human Cerebral Cortex. Neurosurgery 2004, 54: 943-949. PMID: 15046662, DOI: 10.1227/01.neu.0000114512.59624.a5.Peer-Reviewed Original ResearchMeSH KeywordsAdultAstrocytesBlotting, WesternBrain NeoplasmsCerebral CortexChromosome AberrationsEndothelium, VascularGene Expression Regulation, NeoplasticGenes, DominantHemangioma, CavernousHemangioma, Cavernous, Central Nervous SystemHumansImmunoenzyme TechniquesKRIT1 ProteinMicrotubule-Associated ProteinsProto-Oncogene ProteinsPyramidal CellsConceptsCerebral cavernous malformationsCerebral cortexCavernous malformationsVascular endotheliumCentral nervous system vasculatureAdult human cerebral cortexEndothelial cellsCerebral cavernous malformation lesionsBlood-brain barrierAstrocytic foot processesFamilial cerebral cavernous malformationsHuman cerebral cortexCentral nervous systemAutosomal dominant disorderCerebral angiogenesisPyramidal neuronsPyramidal cellsBlood-organ barriersNervous systemWhite pulpRed pulpIntense stainingWestern blottingFoot processesCardiac myocytes