Loss of epigenetic information as a cause of mammalian aging.
Cell
; 186(2): 305-326.e27, 2023 01 19.
Article
en En
| MEDLINE
| ID: mdl-36638792
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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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Envejecimiento
/
Epigénesis Genética
Límite:
Animals
Idioma:
En
Revista:
Cell
Año:
2023
Tipo del documento:
Article