2023
56. USING HIPSC-NEURONS AND CRISPR TO UNCOVER NON-ADDITIVE EFFECTS OF SCZ RISK GENES
Deans M, Seah C, Johnson J, García-González J, Townsley K, Cao E, Schrode N, Stahl E, O'Reilly P, Huckins L, Brennand K. 56. USING HIPSC-NEURONS AND CRISPR TO UNCOVER NON-ADDITIVE EFFECTS OF SCZ RISK GENES. European Neuropsychopharmacology 2023, 75: s86. DOI: 10.1016/j.euroneuro.2023.08.162.Peer-Reviewed Original ResearchSCZ risk genesNon-additive effectsRisk genesCombinatorial perturbationsTranscriptomic effectsFunctional roleRisk variantsGene expression changesBulk RNA-seqMultiple functional rolesSynaptic functionHigh-throughput imagingFunctional redundancyTranscriptional regulatorsRNA-seqCRISPR activationCellular phenotypesRNA interferenceEGenesGene expressionExpression changesHiPSC neuronsPolygenic risk scoresGenetic studiesGenesSTRESS IN A DISH: MODELING THE IMPACT OF COMMON GENETIC VARIATION ON STRESS RESPONSE IN HIPSC-DERIVED NEURONS IN PTSD
Seah C, Signer R, Young H, Kozik E, Rusielewicz T, Bader H, Xu C, de Pins A, Breen M, Paull D, Yehuda R, Girgenti M, Brennand K, Huckins L. STRESS IN A DISH: MODELING THE IMPACT OF COMMON GENETIC VARIATION ON STRESS RESPONSE IN HIPSC-DERIVED NEURONS IN PTSD. European Neuropsychopharmacology 2023, 75: s40. DOI: 10.1016/j.euroneuro.2023.08.081.Peer-Reviewed Original ResearchCommon genetic variationGenetic variationStress responseCell typesEQTL associationsTranscriptional stress responseGenomic risk lociTissue-specific mannerChIP-seq datasetsCell type deconvolutionCommon genetic variantsPost-mortem brainsGene expression signaturesHiPSC-derived neuronsTranscription factorsSuch lociCatalog genesRisk lociGenetic studiesExpression signaturesGenetic variantsRegulatory activityGenesEQTLsMechanistic understandingConvergent coexpression of autism-associated genes suggests some novel risk genes may not be detectable in large-scale genetic studies
Liao C, Moyses-Oliveira M, De Esch C, Bhavsar R, Nuttle X, Li A, Yu A, Burt N, Erdin S, Fu J, Wang M, Morley T, Han L, Consortium C, Dion P, Rouleau G, Zhang B, Brennand K, Talkowski M, Ruderfer D. Convergent coexpression of autism-associated genes suggests some novel risk genes may not be detectable in large-scale genetic studies. Cell Genomics 2023, 3: 100277. PMID: 37082147, PMCID: PMC10112287, DOI: 10.1016/j.xgen.2023.100277.Peer-Reviewed Original ResearchRisk genesNovel risk genesProtein-altering variantsLarge-scale genetic studiesASD risk genesHeritable neurodevelopmental disorderAutism-associated genesCRISPR perturbationsConvergent genesNovel genesTranscriptional consequencesFunctional mutationsGenetic studiesCoexpression patternsDifferential expressionGenesHuman neuronsASD-associationHuman postmortem brainRare variationCoexpressionASD brainNeurodevelopmental disordersPostmortem brainsMutations
2022
Using Stem Cell Models to Explore the Genetics Underlying Psychiatric Disorders: Linking Risk Variants, Genes, and Biology in Brain Disease
Brennand K. Using Stem Cell Models to Explore the Genetics Underlying Psychiatric Disorders: Linking Risk Variants, Genes, and Biology in Brain Disease. American Journal Of Psychiatry 2022, 179: 322-328. PMID: 35491564, DOI: 10.1176/appi.ajp.20220235.Commentaries, Editorials and LettersConceptsRisk variantsFunctional genomic studiesCell typesDiverse cell typesPatient-specific variantsStem cell modelGenomic studiesSignificant lociStem cell-based approachesGenetic studiesExciting questionsCell-based approachesEngineering strategiesGenetic profileNovel therapeutic interventionsCell modelPluripotent stem cell-based approachesVariantsComplex interplayGenetic riskCRISPRGenesLociBiologyTherapeutic interventions
2017
Evaluating Synthetic Activation and Repression of Neuropsychiatric-Related Genes in hiPSC-Derived NPCs, Neurons, and Astrocytes
Ho S, Hartley B, Flaherty E, Rajarajan P, Abdelaal R, Obiorah I, Barretto N, Muhammad H, Phatnani H, Akbarian S, Brennand K. Evaluating Synthetic Activation and Repression of Neuropsychiatric-Related Genes in hiPSC-Derived NPCs, Neurons, and Astrocytes. Stem Cell Reports 2017, 9: 615-628. PMID: 28757163, PMCID: PMC5550013, DOI: 10.1016/j.stemcr.2017.06.012.Peer-Reviewed Original ResearchConceptsSynthetic activationRisk genesCell typesModulation of transcriptionNeuropsychiatric risk genesCommon single nucleotide variantsCas9 fusion proteinsEndogenous expression levelsNeural cell typesPluripotent stem cell-derived neural progenitor cellsRare copy number variationsCopy number variationsSingle nucleotide variantsNeural progenitor cellsGene functionFunctional annotationGenetic studiesGenesRisk variantsProgenitor cellsExpression levelsTranscriptionRepressionPositional effectsProtein
2016
Altered proliferation and networks in neural cells derived from idiopathic autistic individuals
Marchetto M, Belinson H, Tian Y, Freitas B, Fu C, Vadodaria K, Beltrao-Braga P, Trujillo C, Mendes A, Padmanabhan K, Nunez Y, Ou J, Ghosh H, Wright R, Brennand K, Pierce K, Eichenfield L, Pramparo T, Eyler L, Barnes C, Courchesne E, Geschwind D, Gage F, Wynshaw-Boris A, Muotri A. Altered proliferation and networks in neural cells derived from idiopathic autistic individuals. Molecular Psychiatry 2016, 22: 820-835. PMID: 27378147, PMCID: PMC5215991, DOI: 10.1038/mp.2016.95.Peer-Reviewed Original ResearchConceptsNeural progenitor cellsInsulin growth factor-1Pluripotent stem cellsTranscriptional cascadeNeuronal networksAutism spectrum disorderGrowth factor-1Human cell modelsNormal brain sizeEarly brain overgrowthPotential cellular mechanismsMolecular mechanismsGenetic studiesClinical trialsIGF-1Therapeutic effectBrain pathologyAbnormal neurogenesisΒ-cateninCellular mechanismsStem cellsBrain overgrowthProgenitor cellsNeural cellsAltered proliferation