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

Christine Müller1,2, Laura M Zidek2, Tobias Ackermann1

  • 1European Research Institute for the Biology of Ageing, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands.

Elife
|May 1, 2018
PubMed

Insights

Reducing C/EBPβ-LIP expression by genetically modifying the Cebpb-mRNA’s uORF delays aging phenotypes in mice. This genetic intervention extends lifespan in female mice, highlighting C/EBPβ-LIP as a therapeutic target for age-related diseases.

Area of Science:

  • Molecular Biology
  • Gerontology
  • Metabolic Regulation

Background:

  • Aging is linked to physical decline and diseases like metabolic disorders and cancer.
  • Calorie restriction and reduced mTORC1 signaling are known to mitigate aging effects.
  • The mechanistic target of rapamycin complex 1 (mTORC1) pathway stimulates C/EBPβ-LIP synthesis, dependent on a uORF in Cebpb-mRNA.

Purpose of the Study:

  • To investigate the role of C/EBPβ-LIP in the aging process.
  • To determine if genetic ablation of the uORF in Cebpb-mRNA affects age-associated phenotypes and lifespan.
  • To explore C/EBPβ-LIP as a potential therapeutic target for age-related diseases.

Main Methods:

  • Genetic ablation of the upstream open reading frame (uORF) in the Cebpb-mRNA in mice.
  • Analysis of age-associated phenotypes in genetically modified mice (C/EBPβΔuORF).
  • Assessment of lifespan and C/EBPβ-LIP levels in wild-type and C/EBPβΔuORF mice during aging.

Main Results:

  • Genetic ablation of the uORF in Cebpb-mRNA led to reduced C/EBPβ-LIP expression.
  • Reduced C/EBPβ-LIP expression delayed the onset of age-associated phenotypes in mice.
  • Female C/EBPβΔuORF mice exhibited an extended lifespan compared to wild-type controls.
  • LIP levels were observed to increase with age in wild-type mice.

Conclusions:

  • C/EBPβ-LIP plays a significant role in the aging process.
  • Restricting C/EBPβ-LIP expression promotes healthspan and fitness during aging.
  • Targeting C/EBPβ-LIP offers a potential therapeutic strategy for mitigating age-related diseases and extending healthspan.
Keywords:
C/EBPβageingcalorie restrictioncell biologychromosomesgene expressionlifespanlongevitymTORC1mouse

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