2024
Native-state proteomics of Parvalbumin interneurons identifies unique molecular signatures and vulnerabilities to early Alzheimer’s pathology
Kumar P, Goettemoeller A, Espinosa-Garcia C, Tobin B, Tfaily A, Nelson R, Natu A, Dammer E, Santiago J, Malepati S, Cheng L, Xiao H, Duong D, Seyfried N, Wood L, Rowan M, Rangaraju S. Native-state proteomics of Parvalbumin interneurons identifies unique molecular signatures and vulnerabilities to early Alzheimer’s pathology. Nature Communications 2024, 15: 2823. PMID: 38561349, PMCID: PMC10985119, DOI: 10.1038/s41467-024-47028-7.Peer-Reviewed Original ResearchConceptsBiotinylation of proteinsAlzheimer's diseasePre-synaptic defectsDecreased mTOR signalingAD pathogenesisAD riskCytoskeletal disruptionProteomic alterationsTranslational activityMolecular insightsMTOR signalingProteomic findingsProteomicsProteomic signatureMolecular signaturesProteinOver-representedProgressive neuropathologyAlzheimer pathologyMouse modelPV-INsParvalbumin interneuronsMitochondriaAssociated with cognitive declineFast-spiking parvalbumin interneurons
2023
Immune regulatory roles for Kv1.3 channels in Microglia in Alzheimer’s Disease
Bowen C, Lin Y, Zeng H, Nguyen H, Xiao H, Kumar P, Duong D, Espinosa‐Garcia C, Wulff H, Seyfried N, Rangaraju S. Immune regulatory roles for Kv1.3 channels in Microglia in Alzheimer’s Disease. Alzheimer's & Dementia 2023, 19 DOI: 10.1002/alz.078851.Peer-Reviewed Original ResearchKv1.3 blockadeKv1.3 channelsKv1.3 blockersMouse model of AD pathologyBlockade of Kv1.3Immune regulatory roleWestern blottingAlzheimer's diseaseCMV-Cre miceChannels in vitroPDZ-binding motifPlasma membrane proteinsInhibition in vivoCell type-specificPharmacological blockadeOlder 5XFAD miceCMV-CreFunction of microgliaChannel abundanceKv1.3Mouse modelBiotin ligaseFlow cytometryTrafficking proteinsBiotinylated proteinsAge‐Dependent Changes in Perineuronal Nets and Associated Parvalbumin Interneurons in the 5xFAD Amyloidosis Mouse Model
Nelson R, Rangaraju S, Rayaprolu S, Kumar P, Espinosa‐Garcia C, Xiao H. Age‐Dependent Changes in Perineuronal Nets and Associated Parvalbumin Interneurons in the 5xFAD Amyloidosis Mouse Model. Alzheimer's & Dementia 2023, 19 DOI: 10.1002/alz.083101.Peer-Reviewed Original ResearchPV+ neuronsWild typePerineuronal netsAlzheimer's diseaseAD-like pathologyCo-localizationMouse modelAmyloid-betaFast-spiking interneuronsEarly amyloidosisRegulate synaptic transmissionSynaptic maintenanceExtracellular matrix structurePlaque proximityAge-dependent mannerMonths of agePhysiological roleImmunofluorescence microscopyNeuronal roleNeurodegenerative diseasesParvalbumin-positiveParvalbumin interneuronsAge-dependent changesSynaptic transmissionProximal dendrites