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Publication : Loss of epigenetic information as a cause of mammalian aging.

First Author  Yang JH Year  2023
Journal  Cell Volume  186
Issue  2 Pages  305-326.e27
PubMed ID  36638792 Mgi Jnum  J:332903
Mgi Id  MGI:7430607 Doi  10.1016/j.cell.2022.12.027
Citation  Yang JH, et al. (2023) Loss of epigenetic information as a cause of mammalian aging. Cell 186(2):305-326.e27
abstractText  All living things experience an increase in entropy, manifested as a loss of genetic and epigenetic information. In yeast, epigenetic information is lost over time due to the relocalization of chromatin-modifying proteins to DNA breaks, causing cells to lose their identity, a hallmark of yeast aging. Using a system called "ICE" (inducible changes to the epigenome), we find that the act of faithful DNA repair advances aging at physiological, cognitive, and molecular levels, including erosion of the epigenetic landscape, cellular exdifferentiation, senescence, and advancement of the DNA methylation clock, which can be reversed by OSK-mediated rejuvenation. These data are consistent with the information theory of aging, which states that a loss of epigenetic information is a reversible cause of aging.
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