2024
Neutrophils insert elastase into hepatocytes to regulate calcium signaling in alcohol-associated hepatitis
Ogino N, Leite M, Guerra M, Kruglov E, Asashima H, Hafler D, Ito T, Pereira J, Peiffer B, Sun Z, Ehrlich B, Nathanson M. Neutrophils insert elastase into hepatocytes to regulate calcium signaling in alcohol-associated hepatitis. Journal Of Clinical Investigation 2024, 134: e171691. PMID: 38916955, PMCID: PMC11324315, DOI: 10.1172/jci171691.Peer-Reviewed Original ResearchAlcohol-associated hepatitisReduced cell proliferationCalcium channel expressionCalcium signaling mechanismsIntracellular calcium channelsCell proliferationRegulate calcium signalingNeutrophil extracellular trapsChannel expressionNeutrophil granule proteinsCalcium channelsNeutrophil infiltrationPatient specimensGranule proteasesMouse modelHealthy subjectsLiver diseaseExtracellular trapsCalcium signalingSerpin E2NeutrophilsElastase activityHepatitisTissue remodelingSignaling mechanisms
2022
A multiple sclerosis–protective coding variant reveals an essential role for HDAC7 in regulatory T cells
Axisa P, Yoshida T, Lucca L, Kasler H, Lincoln M, Pham G, Del Priore D, Carpier J, Lucas C, Verdin E, Sumida T, Hafler D. A multiple sclerosis–protective coding variant reveals an essential role for HDAC7 in regulatory T cells. Science Translational Medicine 2022, 14: eabl3651. PMID: 36516268, DOI: 10.1126/scitranslmed.abl3651.Peer-Reviewed Original ResearchConceptsExperimental autoimmune encephalitisRegulatory T cellsHistone deacetylase 7Multiple sclerosisT cellsMouse modelFunction of Foxp3CD4 T cellsHigher suppressive capacityVivo modelingAutoimmune encephalitisEAE severityImmunosuppressive subsetAutoimmune diseasesImmunomodulatory roleSuppressive capacityImmune cellsDisease onsetDistinct molecular classesSusceptibility lociGenetic susceptibility lociSingle-cell RNA sequencingDisease riskPatient samplesProtective variants
2017
Podoplanin is a negative regulator of Th17 inflammation
Nylander AN, Ponath GD, Axisa PP, Mubarak M, Tomayko M, Kuchroo VK, Pitt D, Hafler DA. Podoplanin is a negative regulator of Th17 inflammation. JCI Insight 2017, 2: e92321. PMID: 28878118, PMCID: PMC5621890, DOI: 10.1172/jci.insight.92321.Peer-Reviewed Original ResearchConceptsT cellsIL-17IL-17 secretionDistinct cytokine profilesInflammatory gene signatureTh17-polarizing conditionsTh17 cellsCytokine profileCell subsetsInflammatory responseSkin biopsiesMouse modelPDPN expressionMultiple organsSkin diseasesGene signatureInflammationLymphatic systemCLEC-2PDPNRecent dataDifferent subpopulationsCellsTranscriptional profilesShRNA gene
2014
TLR‐mediated STAT3 and ERK activation controls IL‐10 secretion by human B cells
Liu B, Cao Y, Huizinga TW, Hafler DA, Toes RE. TLR‐mediated STAT3 and ERK activation controls IL‐10 secretion by human B cells. European Journal Of Immunology 2014, 44: 2121-2129. PMID: 24737107, DOI: 10.1002/eji.201344341.Peer-Reviewed Original ResearchConceptsIL-10 productionIL-10-producing B cellsB cellsHuman B cellsIL-10IL-10 secretionPotent immunoregulatory cytokineType I IFNERK activationType I IFN familyInhibition of STAT3TLR-MyD88Activation of STAT3Immunoregulatory cytokinesTLR signalingPotent productionMouse modelI IFNCD40 ligationAntibody productionTLRSTAT3 pathwayIFNIFN familyPotential target
2013
Microbial Reprogramming Inhibits Western Diet-Associated Obesity
Poutahidis T, Kleinewietfeld M, Smillie C, Levkovich T, Perrotta A, Bhela S, Varian BJ, Ibrahim YM, Lakritz JR, Kearney SM, Chatzigiagkos A, Hafler DA, Alm EJ, Erdman SE. Microbial Reprogramming Inhibits Western Diet-Associated Obesity. PLOS ONE 2013, 8: e68596. PMID: 23874682, PMCID: PMC3707834, DOI: 10.1371/journal.pone.0068596.Peer-Reviewed Original ResearchConceptsAge-associated weight gainWeight gainT cellsFast foodAd libitum caloric intakeActive immune toleranceImmune cell profilesRegulatory T cellsT cell balanceRecent epidemiological studiesLikelihood of obesityNaïve recipient animalsGut microbial ecologyT helperImmune toleranceBaseline dietWeight managementCaloric intakePopulation-based approachMouse modelCell balanceEpidemiological studiesRecipient animalsAnimal modelsAbdominal fat