Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2024 Aug 6;36(8):1858-1881.e23.
doi: 10.1016/j.cmet.2024.06.006. Epub 2024 Jul 2.

The activity of early-life gene regulatory elements is hijacked in aging through pervasive AP-1-linked chromatin opening

Affiliations
Free article

The activity of early-life gene regulatory elements is hijacked in aging through pervasive AP-1-linked chromatin opening

Ralph Patrick et al. Cell Metab. .
Free article

Abstract

A mechanistic connection between aging and development is largely unexplored. Through profiling age-related chromatin and transcriptional changes across 22 murine cell types, analyzed alongside previous mouse and human organismal maturation datasets, we uncovered a transcription factor binding site (TFBS) signature common to both processes. Early-life candidate cis-regulatory elements (cCREs), progressively losing accessibility during maturation and aging, are enriched for cell-type identity TFBSs. Conversely, cCREs gaining accessibility throughout life have a lower abundance of cell identity TFBSs but elevated activator protein 1 (AP-1) levels. We implicate TF redistribution toward these AP-1 TFBS-rich cCREs, in synergy with mild downregulation of cell identity TFs, as driving early-life cCRE accessibility loss and altering developmental and metabolic gene expression. Such remodeling can be triggered by elevating AP-1 or depleting repressive H3K27me3. We propose that AP-1-linked chromatin opening drives organismal maturation by disrupting cell identity TFBS-rich cCREs, thereby reprogramming transcriptome and cell function, a mechanism hijacked in aging through ongoing chromatin opening.

Keywords: AP-1; CTCF; aging; cell identity; chromatin; development; maturation; polycomb repressive complex 2; redistribution; transcription factors.

PubMed Disclaimer

Conflict of interest statement

Declaration of interests The authors declare no competing interests.