2024
Tlr9 deficiency in B cells leads to obesity by promoting inflammation and gut dysbiosis
Wang P, Yang X, Zhang L, Sha S, Huang J, Peng J, Gu J, Pearson J, Hu Y, Zhao H, Wong F, Wang Q, Wen L. Tlr9 deficiency in B cells leads to obesity by promoting inflammation and gut dysbiosis. Nature Communications 2024, 15: 4232. PMID: 38762479, PMCID: PMC11102548, DOI: 10.1038/s41467-024-48611-8.Peer-Reviewed Original ResearchConceptsToll-like receptor 9Gut microbiotaGut microbial communityTransferred to germ-free miceB cellsGerm-free miceTLR9 deficiencyKO miceGene sequencesGerminal center B cellsMicrobial communitiesMarginal zone B cellsGut dysbiosisFollicular helper cellsSelf-DNAMetabolic homeostasisAssociated with increased frequencyPro-inflammatory stateFat tissue inflammationGutHigh-fat dietMicrobiotaHelper cellsT cellsControl mice
2022
Obesity aggravates contact hypersensitivity reaction in mice
Majewska‐Szczepanik M, Kowalczyk P, Marcińska K, Strzępa A, Lis GJ, Wong FS, Szczepanik M, Wen L. Obesity aggravates contact hypersensitivity reaction in mice. Contact Dermatitis 2022, 87: 28-39. PMID: 35234303, PMCID: PMC9949724, DOI: 10.1111/cod.14088.Peer-Reviewed Original ResearchConceptsContact hypersensitivityFecal microbiota transplantationQuantitative polymerase chain reactionIL-17AObese miceEnhanced contact hypersensitivityGut microbiota dysbiosisLow-grade inflammationContact hypersensitivity reactionInfluence of obesityInflammatory skin diseaseT helper 1Antigen-specific responsesHigh-fat dietSubcutaneous adipose tissueProinflammatory CD4Proinflammatory milieuCytokine profileMicrobiota dysbiosisDendritic cellsLymph nodesMicrobiota transplantationHelper 1Hypersensitivity reactionsImmune cells
2012
Epicutaneous immunization with DNP‐BSA induces CD4+ CD25+ Treg cells that inhibit Tc1‐mediated CS
Majewska‐Szczepanik M, Zemelka‐Wiącek M, Ptak W, Wen L, Szczepanik M. Epicutaneous immunization with DNP‐BSA induces CD4+ CD25+ Treg cells that inhibit Tc1‐mediated CS. Immunology And Cell Biology 2012, 90: 784-795. PMID: 22290507, DOI: 10.1038/icb.2012.1.Peer-Reviewed Original ResearchMeSH KeywordsAdoptive TransferAnimalsCell CommunicationCell ProliferationCTLA-4 AntigenCytokinesDermatitis, ContactDinitrophenolsDose-Response Relationship, ImmunologicFemaleForkhead Transcription FactorsImmunizationInflammationInflammation MediatorsInterleukin-2 Receptor alpha SubunitLymphoid TissueMiceMice, Inbred BALB CPhenotypeReceptors, Antigen, T-Cell, alpha-betaSerum Albumin, BovineSkinT-Lymphocytes, CytotoxicT-Lymphocytes, RegulatoryConceptsEC immunizationLymph nodesContact sensitivityTreg cellsDNP-BSAEffector T cell responsesRegulatory T cellsT cell responsesSubcutaneous lymph nodesEpicutaneous immunizationInduces CD4Subsequent unresponsivenessIL-12Normal miceT cellsCS responsesImmunizationTranswell systemInhibited productionFlow cytometryProtein antigensCell proliferationLymphocytesCell contactSensitization
2009
Inflammatory Regulation by TLR3 in Acute Hepatitis
Xiao X, Zhao P, Rodriguez-Pinto D, Qi D, Henegariu O, Alexopoulou L, Flavell RA, Wong FS, Wen L. Inflammatory Regulation by TLR3 in Acute Hepatitis. The Journal Of Immunology 2009, 183: 3712-3719. PMID: 19710451, PMCID: PMC3787866, DOI: 10.4049/jimmunol.0901221.Peer-Reviewed Original ResearchConceptsAcute hepatitisCon ATLR3 expressionLiver damageAdaptive T cell immune responseBone marrow chimeric miceT cell immune responsesCon A injectionFunction of TLR3Hematopoietic cellsLiver mononuclear cellsCell immune responsesDamaged liver tissueWild-type miceWT hematopoietic cellsA injectionWT miceMononuclear cellsInnate activationHepatocyte damageImmune responseInflammatory regulationHepatitisMouse modelTLR3