Reduced expression of C/EBPβ-LIP extends health and lifespan in mice

Elife. 2018 Jun 4:7:e34985. doi: 10.7554/eLife.34985.

Abstract

Ageing is associated with physical decline and the development of age-related diseases such as metabolic disorders and cancer. Few conditions are known that attenuate the adverse effects of ageing, including calorie restriction (CR) and reduced signalling through the mechanistic target of rapamycin complex 1 (mTORC1) pathway. Synthesis of the metabolic transcription factor C/EBPβ-LIP is stimulated by mTORC1, which critically depends on a short upstream open reading frame (uORF) in the Cebpb-mRNA. Here, we describe that reduced C/EBPβ-LIP expression due to genetic ablation of the uORF delays the development of age-associated phenotypes in mice. Moreover, female C/EBPβΔuORF mice display an extended lifespan. Since LIP levels increase upon aging in wild type mice, our data reveal an important role for C/EBPβ in the aging process and suggest that restriction of LIP expression sustains health and fitness. Thus, therapeutic strategies targeting C/EBPβ-LIP may offer new possibilities to treat age-related diseases and to prolong healthspan.

Keywords: C/EBPβ; ageing; calorie restriction; cell biology; chromosomes; gene expression; lifespan; longevity; mTORC1; mouse.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aging*
  • Animals
  • CCAAT-Enhancer-Binding Protein-beta / biosynthesis*
  • Down-Regulation
  • Female
  • Gene Expression*
  • Longevity
  • Male
  • Mice, Inbred C57BL

Substances

  • CCAAT-Enhancer-Binding Protein-beta
  • Cebpb protein, mouse

Grants and funding

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.