2022
UVB-mediated DNA damage induces matrix metalloproteinases to promote photoaging in an AhR- and SP1-dependent manner
Kim DJ, Iwasaki A, Chien AL, Kang S. UVB-mediated DNA damage induces matrix metalloproteinases to promote photoaging in an AhR- and SP1-dependent manner. JCI Insight 2022, 7: e156344. PMID: 35316219, PMCID: PMC9090247, DOI: 10.1172/jci.insight.156344.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDNA DamageMatrix Metalloproteinase 2Matrix MetalloproteinasesMiceReactive Oxygen SpeciesReceptors, Aryl HydrocarbonSkin AgingConceptsSpecificity protein 1DNA damageSp1-dependent mannerProtein 1Activator protein-1HaCaT human immortalized keratinocytesExtracellular matrix componentsTranscription factorsAryl hydrocarbon receptorHuman immortalized keratinocytesMatrix componentsHydrocarbon receptorPotential targetImmortalized keratinocytesROSSun-exposed skinType IV collagenMMP2 expressionAhRMatrix metalloproteinasesMechanistic studiesMMP2IV collagenTopical treatmentMMP-1
2020
Vitamin B12 and folic acid alleviate symptoms of nutritional deficiency by antagonizing aryl hydrocarbon receptor
Kim DJ, Venkataraman A, Jain PC, Wiesler EP, DeBlasio M, Klein J, Tu SS, Lee S, Medzhitov R, Iwasaki A. Vitamin B12 and folic acid alleviate symptoms of nutritional deficiency by antagonizing aryl hydrocarbon receptor. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 15837-15845. PMID: 32571957, PMCID: PMC7355044, DOI: 10.1073/pnas.2006949117.Peer-Reviewed Original ResearchConceptsAryl hydrocarbon receptorMethylation of DNAHuman cancer samplesHydrocarbon receptorAhR transcriptional activityAhR target genesFA deficiencyOne-carbon cycleAhR agonistsFolic acid functionAhR nuclear localizationLower transcriptionNuclear localizationTarget genesGene inductionHigher transcriptionTranscriptional activityXRE bindingDe novo generationCycle proteinsBirth defectsErythroid progenitorsFas functionMolecular levelFA uptake