Distinct roles of KLF4 in mesenchymal cell subtypes during lung fibrogenesis
Chandran RR, Xie Y, Gallardo-Vara E, Adams T, Garcia-Milian R, Kabir I, Sheikh AQ, Kaminski N, Martin KA, Herzog EL, Greif DM. Distinct roles of KLF4 in mesenchymal cell subtypes during lung fibrogenesis. Nature Communications 2021, 12: 7179. PMID: 34893592, PMCID: PMC8664937, DOI: 10.1038/s41467-021-27499-8.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell ProliferationDisease Models, AnimalDown-RegulationExtracellular MatrixFemaleFibroblastsFibrosisHumansKruppel-Like Factor 4LungLung InjuryMaleMesenchymal Stem CellsMiceMice, Inbred C57BLMyofibroblastsReceptor, Platelet-Derived Growth Factor betaRespiratory Tract DiseasesSignal TransductionTransforming Growth Factor betaConceptsMesenchymal cell typesPlatelet-derived growth factor receptorSmooth muscle actinLung fibrosisKruppel-like factor 4Forkhead box M1Growth factor receptorCell transitionCell typesExtracellular matrixDistinct rolesKLF4Box M1C chemokine ligandMesenchymal cell subtypesFactor receptorPro-fibrotic effectsFactor 4PDGFRMesenchymeCellsMacrophage accumulationKLF4 levelsChemokine ligandLung fibrogenesisMacrophage-derived PDGF-B induces muscularization in murine and human pulmonary hypertension
Ntokou A, Dave JM, Kauffman AC, Sauler M, Ryu C, Hwa J, Herzog EL, Singh I, Saltzman WM, Greif DM. Macrophage-derived PDGF-B induces muscularization in murine and human pulmonary hypertension. JCI Insight 2021, 6: e139067. PMID: 33591958, PMCID: PMC8026182, DOI: 10.1172/jci.insight.139067.Peer-Reviewed Original ResearchConceptsRight ventricle hypertrophyPulmonary hypertensionDistal muscularizationSmooth muscle cellsHypoxia-inducible factor 2APulmonary arterial hypertension patientsLysM-Cre miceArterial hypertension patientsHuman pulmonary hypertensionHypoxia-inducible factor 1aPlatelet-derived growth factorMacrophage-conditioned mediumVentricle hypertrophyHypertension patientsDistal arteriolesMacrophage accumulationFl miceCardiovascular diseaseInterventional strategiesMuscularizationHypoxia exposureExcess macrophagesSMC proliferationLethal diseaseMuscle cells