2024
Intimomedial tears of the aorta heal by smooth muscle cell-mediated fibrosis without atherosclerosis
Hassab A, Hur D, Vallabhajosyula P, Tellides G, Assi R. Intimomedial tears of the aorta heal by smooth muscle cell-mediated fibrosis without atherosclerosis. JCI Insight 2024, 9: e172437. PMID: 38592807, PMCID: PMC11141924, DOI: 10.1172/jci.insight.172437.Peer-Reviewed Original ResearchMeSH KeywordsAgedAortaAtherosclerosisFemaleFibrosisHumansMaleMiddle AgedMyocytes, Smooth MuscleNeointimaTunica IntimaTunica MediaConceptsDepartment of SurgerySmooth muscle cellsCellular response to injuryResponse to injuryImmunofluorescence confocal microscopyVessel wall repairPrimary lesionAscending aortaConduit functionAneurysmal diseaseDense fibrosisRadiological signsMural hematomaTear progressionMuscle cellsNon-hemorrhagicErythrocyte extravasationWall repairAortaTear completionInduce atherosclerosisHealed lesionsScattered leukocytesMinimal injuryConclusionThese findings
2022
Macrophage-Derived 25-Hydroxycholesterol Promotes Vascular Inflammation, Atherogenesis, and Lesion Remodeling
Canfrán-Duque A, Rotllan N, Zhang X, Andrés-Blasco I, Thompson B, Sun J, Price N, Fernández-Fuertes M, Fowler J, Gómez-Coronado D, Sessa W, Giannarelli C, Schneider R, Tellides G, McDonald J, Fernández-Hernando C, Suárez Y. Macrophage-Derived 25-Hydroxycholesterol Promotes Vascular Inflammation, Atherogenesis, and Lesion Remodeling. Circulation 2022, 147: 388-408. PMID: 36416142, PMCID: PMC9892282, DOI: 10.1161/circulationaha.122.059062.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtherosclerosisCholesterolHumansHydroxycholesterolsInflammationMacrophagesMiceMice, KnockoutPlaque, AtheroscleroticConceptsLipid-loaded macrophagesLineage-tracing mouse modelsSREBP transcriptional activityCholesterol biosynthetic intermediatesWestern diet feedingAccessible cholesterolDifferent macrophage populationsTranscriptomic analysisKey immune regulatorsPlasma membraneAtherosclerosis progressionImmune activationTranscriptional activityGene expressionDiet feedingInflammatory responseMouse bone marrowLiver X receptorBiosynthetic intermediatesSterol metabolismApoptosis susceptibilityToll-like receptor 4Proinflammatory gene expressionHuman coronary atherosclerotic lesionsMouse atherosclerotic plaques
2021
Desmosterol suppresses macrophage inflammasome activation and protects against vascular inflammation and atherosclerosis
Zhang X, McDonald JG, Aryal B, Canfrán-Duque A, Goldberg EL, Araldi E, Ding W, Fan Y, Thompson BM, Singh AK, Li Q, Tellides G, Ordovás-Montanes J, García Milian R, Dixit VD, Ikonen E, Suárez Y, Fernández-Hernando C. Desmosterol suppresses macrophage inflammasome activation and protects against vascular inflammation and atherosclerosis. Proceedings Of The National Academy Of Sciences Of The United States Of America 2021, 118: e2107682118. PMID: 34782454, PMCID: PMC8617522, DOI: 10.1073/pnas.2107682118.Peer-Reviewed Original ResearchConceptsCholesterol biosynthetic intermediatesBiosynthetic intermediatesDependent inflammasome activationSingle-cell transcriptomicsMitochondrial reactive oxygen species productionFoam cell formationMacrophage foam cellsReactive oxygen species productionHuman coronary artery lesionsConversion of desmosterolTranscriptomic analysisMacrophage cholesterol metabolismPhysiological contextOxygen species productionLiver X receptor ligandsApoptosis-associated speck-like proteinRetinoid X receptor activationX receptor ligandsInflammasome activationAtherosclerotic plaquesSpeck-like proteinCholesterol homeostasisMacrophage inflammasome activationKey moleculesCell formation
2019
Endothelial TGF-β signalling drives vascular inflammation and atherosclerosis
Chen PY, Qin L, Li G, Wang Z, Dahlman JE, Malagon-Lopez J, Gujja S, Cilfone N, Kauffman K, Sun L, Sun H, Zhang X, Aryal B, Canfran-Duque A, Liu R, Kusters P, Sehgal A, Jiao Y, Anderson D, Gulcher J, Fernandez-Hernando C, Lutgens E, Schwartz M, Pober J, Chittenden T, Tellides G, Simons M. Endothelial TGF-β signalling drives vascular inflammation and atherosclerosis. Nature Metabolism 2019, 1: 912-926. PMID: 31572976, PMCID: PMC6767930, DOI: 10.1038/s42255-019-0102-3.Peer-Reviewed Original ResearchConceptsTGF-β signalingVascular inflammationDisease progressionPlaque growthProgressive vascular diseaseVessel wall inflammationChronic inflammatory responseSpecific therapeutic interventionsAtherosclerotic plaque growthHyperlipidemic micePlaque inflammationWall inflammationProinflammatory effectsVascular diseaseInflammatory responseVascular permeabilityAtherosclerotic plaquesAbnormal shear stressTherapeutic interventionsInflammationEndothelial TGFΒ signalingVessel wallAtherosclerosisLipid retention