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Abstract
Abstract Human aging is associated with low grade chronic inflammation termed, inflammaging, which is a significant risk factor for morbidity and mortality in elderly population. The innate immune system is implicated as master regulator of this process via expression of cytokines and other key mediators. We used ATAC-seq to identify chromatin signatures in monocytes obtained from healthy donors of the GESTALT cohort. State of differentially open chromatin (DOC) between young (<60y) and older (>60y) donors were identified. Older donors segregated in two clusters, young-like and distinct old-like cluster. Old-like DOC’s enriched for intergenic enhancer-like elements dominated by the DNA binding motif of the transcription factor NF-κB. The relationships of age-associated DOC to gene expression and DNA methylation reveled enrichment of cytokine mediated inflammatory pathways. Ongoing studies of cytokine expression using high-dimensional flowcytometry will be used to determine the functional consequences of chromatin structural changes associated with age.
Published Version
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