Sameet Mehta, PhD
he/him/his
Associate Research ScientistAbout
Research
Publications
2025
Tumor microenvironment of non-small cell lung cancer impairs immune cell function among people with HIV
Desai S, Salahuddin S, Yusuf R, Ranjan K, Gu J, Osmani L, Lin Y, Mehta S, Talmon R, Kang I, Kluger Y, Zhao H, Schalper K, Emu B. Tumor microenvironment of non-small cell lung cancer impairs immune cell function among people with HIV. Journal Of Clinical Investigation 2025, 135: e177310. PMID: 40459946, PMCID: PMC12259253, DOI: 10.1172/jci177310.Peer-Reviewed Original ResearchNon-small cell lung cancerTumor microenvironmentImmune cellsLung cancerCohort of non-small cell lung cancerExpression of PD-1Impairs anti-tumor responsesTumor-infiltrating CD8+Tumor-specific immune responsesCD4+ T cellsHIV-associated tumorsInfiltrating CD8+Expression of immunoregulatory moleculesAnti-tumor responsesTumor-associated macrophagesCell lung cancerImmune cell functionNSCLC cell linesPD-1Tumor killingBlocker therapyCD8+LAG-3Immune landscapeImmunoregulatory phenotypeModeling bone marrow microenvironment and hematopoietic dysregulation in Gaucher disease through VavCre mediated Gba deletion
Belinsky G, Ruan J, Fattahi N, Mehta S, Boddupalli C, Mistry P, Nair S. Modeling bone marrow microenvironment and hematopoietic dysregulation in Gaucher disease through VavCre mediated Gba deletion. Human Molecular Genetics 2025, 34: 952-966. PMID: 40197748, PMCID: PMC12085781, DOI: 10.1093/hmg/ddaf045.Peer-Reviewed Original ResearchGD miceImmune dysregulationGaucher diseaseExpansion of monocytesImmune cell deconvolutionKnockout modelsBone marrow microenvironmentGlucocerebrosidase activityC57BL/6 J backgroundDeficient glucocerebrosidase activityGaucher cell infiltrationInfluence disease severityGD biomarkersGD pathologyGD pathophysiologyLysosomal storage disorderImmune landscapeDendritic cellsHematopoietic stemMarrow microenvironmentAccumulation of glucosylceramideVav-CreBone marrowCell infiltrationHematopoietic cells
2024
Epigenetic Changes in Cerebrospinal Fluid and Blood of People With Neurosyphilis
Mostaghimi D, Mehta S, Yoon J, Kosana P, Marra C, Corley M, Farhadian S. Epigenetic Changes in Cerebrospinal Fluid and Blood of People With Neurosyphilis. The Journal Of Infectious Diseases 2024, 231: 883-893. PMID: 39356164, PMCID: PMC11998562, DOI: 10.1093/infdis/jiae476.Peer-Reviewed Original ResearchPeripheral blood mononuclear cellsCerebrospinal fluidRNA expression changesEpigenetic changesExpression changesBlood mononuclear cellsDifferentially methylated sitesDNA methylation profilesInsulin-responsive pathwaysAntibiotic treatmentImmune cellsB cellsMononuclear cellsMethylation changesDNA methylationMethylation profilesMatched ControlsBacterial infectionsNon-NENeurosyphilisBlood of peopleInfectionRNANsEarly adversity causes sex-specific deficits in perforant pathway connectivity and contextual memory in adolescent mice
Islam R, White J, Arefin T, Mehta S, Liu X, Polis B, Giuliano L, Ahmed S, Bowers C, Zhang J, Kaffman A. Early adversity causes sex-specific deficits in perforant pathway connectivity and contextual memory in adolescent mice. Biology Of Sex Differences 2024, 15: 39. PMID: 38715106, PMCID: PMC11075329, DOI: 10.1186/s13293-024-00616-0.Peer-Reviewed Original ResearchConceptsLateral entorhinal cortexContextual fear conditioningDorsal hippocampusHippocampal developmentSex differencesFear conditioningEarly adversityLimited beddingSevere deficitsModel of early adversitySex-specific deficitsReelin-positive neuronsPerforant pathwayReelin-positive cellsDiffusion magnetic resonance imagingEx vivo diffusion magnetic resonance imagingContextual freezingContextual memoryAdolescent miceHippocampal functionLife adversityEntorhinal cortexHippocampusDeficitsAdolescent males
2023
Early cellular and molecular signatures correlate with severity of West Nile virus infection
Lee H, Zhao Y, Fleming I, Mehta S, Wang X, Vander Wyk B, Ronca S, Kang H, Chou C, Fatou B, Smolen K, Levy O, Clish C, Xavier R, Steen H, Hafler D, Love J, Shalek A, Guan L, Murray K, Kleinstein S, Montgomery R. Early cellular and molecular signatures correlate with severity of West Nile virus infection. IScience 2023, 26: 108387. PMID: 38047068, PMCID: PMC10692672, DOI: 10.1016/j.isci.2023.108387.Peer-Reviewed Original ResearchWest Nile virusEffective anti-viral responseInnate immune cell typesWest Nile virus infectionPro-inflammatory markersAcute time pointsImmune cell typesAnti-viral responseMolecular signaturesHost cellular activitiesAcute infectionAsymptomatic donorsPeripheral bloodSevere infectionsVirus infectionImmune responseSevere casesCell activityIll individualsSerum proteomicsInfectionInfection severityHigh expressionTime pointsNile virusMicroRNA-1 protects the endothelium in acute lung injury
Korde A, Haslip M, Pednekar P, Khan A, Chioccioli M, Mehta S, Lopez-Giraldez F, Bermejo S, Rojas M, Dela Cruz C, Matthay M, Pober J, Pierce R, Takyar S. MicroRNA-1 protects the endothelium in acute lung injury. JCI Insight 2023, 8: e164816. PMID: 37737266, PMCID: PMC10561733, DOI: 10.1172/jci.insight.164816.Peer-Reviewed Original ResearchConceptsAcute respiratory distress syndromeAcute lung injuryVascular endothelial growth factorAngiopoietin-2Lung injuryAcute injuryMiR-1MicroRNA-1Endothelial cell-specific overexpressionSevere endothelial dysfunctionRespiratory distress syndromeSurvival of miceIntrinsic protective effectContext of injuryCell-specific overexpressionEndothelial growth factorFamily member 3Pneumonia cohortMiR-1 targetsEndothelial dysfunctionDistress syndromeBarrier dysfunctionCapillary leakProtective effectSevere formA systems biology approach identifies the role of dysregulated PRDM6 in the development of hypertension
Gunawardhana K, Hong L, Rugira T, Uebbing S, Kucharczak J, Mehta S, Karunamuni D, Cabera-Mendoza B, Gandotra N, Scharfe C, Polimanti R, Noonan J, Mani A. A systems biology approach identifies the role of dysregulated PRDM6 in the development of hypertension. Journal Of Clinical Investigation 2023, 133: e160036. PMID: 36602864, PMCID: PMC9927944, DOI: 10.1172/jci160036.Peer-Reviewed Original ResearchConceptsDevelopment of hypertensionParallel reporter assaysRenin inhibitor aliskirenNeural crest-derived cellsRenin-producing cellsSystems biology approachRNA-seq analysisCell-specific disruptionCrest-derived cellsSmooth muscle cellsMuscle cell proteinsSystemic hypertensionBlood pressureWT miceAntihypertensive drugsBiology approachSuper enhancersFine mappingWT littermatesThird intronMultiple GWASCollagen depositionMouse aortaReporter assaysFate mapping
2022
Mitochondrial dysfunction induces ALK5-SMAD2-mediated hypovascularization and arteriovenous malformations in mouse retinas
Zhang H, Li B, Huang Q, López-Giráldez F, Tanaka Y, Lin Q, Mehta S, Wang G, Graham M, Liu X, Park I, Eichmann A, Min W, Zhou J. Mitochondrial dysfunction induces ALK5-SMAD2-mediated hypovascularization and arteriovenous malformations in mouse retinas. Nature Communications 2022, 13: 7637. PMID: 36496409, PMCID: PMC9741628, DOI: 10.1038/s41467-022-35262-w.Peer-Reviewed Original ResearchConceptsMitochondrial dysfunctionThioredoxin 2Single-cell RNA-seq analysisRNA-seq analysisMutant miceNuclear genesMitochondrial proteinsMitochondrial localizationHuman retinal diseasesTranscriptional factorsGene expressionMutant retinasMitochondrial activityExtracellular matrixNovel mechanismVascular maturationArteriovenous malformationsGenetic deficiencyVessel growthSmad2Mouse retinaVascular malformationsMechanistic studiesBasement membraneRetinal vascular malformationsNeuroinflammation in neuronopathic Gaucher disease: Role of microglia and NK cells, biomarkers, and response to substrate reduction therapy
Boddupalli CS, Nair S, Belinsky G, Gans J, Teeple E, Nguyen TH, Mehta S, Guo L, Kramer ML, Ruan J, Wang H, Davison M, Kumar D, Vidyadhara D, Zhang B, Klinger K, Mistry PK. Neuroinflammation in neuronopathic Gaucher disease: Role of microglia and NK cells, biomarkers, and response to substrate reduction therapy. ELife 2022, 11: e79830. PMID: 35972072, PMCID: PMC9381039, DOI: 10.7554/elife.79830.Peer-Reviewed Original ResearchConceptsNeuronopathic Gaucher diseaseAmelioration of neuroinflammationNK cellsGaucher diseaseSerum neurofilament light chainInvolvement of microgliaActivation of microgliaRole of microgliaProminent pathological featureNeurofilament light chainBlood-derived macrophagesRare neurodegenerative disorderGlucosylceramide synthaseNeuroinflammation pathwaysSerum NFMicroglia activationNeuronal injuryImmune infiltratesImproved survivalBrain macrophagesPathological featuresGD patientsClinical trialsMacrophage compartmentPatient managementCorrection: The Lyme disease agent co-opts adiponectin receptor-mediated signaling in its arthropod vector
Tang X, Cao Y, Arora G, Hwang J, Sajid A, Brown CL, Mehta S, Marín-López A, Chuang YM, Wu MJ, Ma H, Pal U, Narasimhan S, Fikrig E. Correction: The Lyme disease agent co-opts adiponectin receptor-mediated signaling in its arthropod vector. ELife 2022, 11: e77794. PMID: 35179491, PMCID: PMC8856650, DOI: 10.7554/elife.77794.Peer-Reviewed Original Research
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