2023
Cellular allostatic load is linked to increased energy expenditure and accelerated biological aging
Bobba-Alves N, Sturm G, Lin J, Ware S, Karan K, Monzel A, Bris C, Procaccio V, Lenaers G, Higgins-Chen A, Levine M, Horvath S, Santhanam B, Kaufman B, Hirano M, Epel E, Picard M. Cellular allostatic load is linked to increased energy expenditure and accelerated biological aging. Psychoneuroendocrinology 2023, 155: 106322. PMID: 37423094, PMCID: PMC10528419, DOI: 10.1016/j.psyneuen.2023.106322.Peer-Reviewed Original ResearchConceptsCellular agingCellular energy expenditureDNA methylation clockMitochondrial oxidative phosphorylationStress adaptationMtDNA instabilityOXPHOS activityMethylation clockOxidative phosphorylationMetabolic shiftEnergetic costHuman fibroblast lineCellular basisPhysiological responsesFibroblast linesStress triggersPotential driversBiological agingEnergy expenditureChronic activationLifespanDamaging effectsPrimary human fibroblast linesCytokine secretionPhosphorylation
2022
Tick tock, tick tock: Mouse culture and tissue aging captured by an epigenetic clock
Minteer C, Morselli M, Meer M, Cao J, Higgins‐Chen A, Lang SM, Pellegrini M, Yan Q, Levine ME. Tick tock, tick tock: Mouse culture and tissue aging captured by an epigenetic clock. Aging Cell 2022, 21: e13553. PMID: 35104377, PMCID: PMC8844113, DOI: 10.1111/acel.13553.Peer-Reviewed Original ResearchConceptsMouse embryonic fibroblastsDNA methylationEpigenetic agingImportant chromatin regulatorsPolycomb group (PcG) factorsAnti-aging interventionsChromatin regulatorsEmbryonic fibroblastsCellular senescenceTissue agingCellular agingEpigenetic clocksMultiple tissuesMouse tissuesCaloric restrictionMechanistic insightsAging changesKidney fibroblastsReduced representationTime pointsPhysiological agingMouse culturesSuch alterationsTick-TockTissue