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Updated: Jun 4, 2026

Studying Age-dependent Genomic Instability using the S. cerevisiae Chronological Lifespan Model
Published on: September 29, 2011
DREAM repressive activity links somatic mutation, lifespan and disease
Zane Koch1, Shuvro P Nandi2,3, Kate Licon3
1Program in Bioinformatics and Systems Biology, University of California, San Diego, La Jolla, CA, USA.
The DREAM complex regulates DNA repair and impacts aging. Lower DREAM activity reduces mutation rates, extends lifespan in mammals, and may protect against Alzheimer's disease.
Area of Science:
- Genetics
- Aging Research
- Molecular Biology
Background:
- The DREAM complex is a known repressor of DNA repair.
- Its long-term effects on human health and aging are not well understood.
Purpose of the Study:
- To investigate the impact of DREAM-associated activity on somatic mutation burden.
- To explore the link between DREAM activity, lifespan, and age-related diseases.
Main Methods:
- Profiling DREAM-associated activity and somatic mutations across 21 mouse tissues.
- Analyzing the correlation between DREAM activity and lifespan across 92 mammal species.
- Examining DREAM activity in Alzheimer's disease patients.
- Conducting DREAM knockout studies in mice.
Main Results:
- Lower DREAM activity correlates with decreased mutation rates in mouse tissues.
- Reduced DREAM activity is associated with longer lifespans in mammals.
- In humans, lower DREAM activity predicts later onset and reduced neuropathology in Alzheimer's disease.
- DREAM knockout in mice significantly reduced mutation accumulation in the brain.
Conclusions:
- DREAM complex activity is a significant factor in lifetime somatic mutation burden.
- DREAM acts as a key regulator of aging and age-related disease pathology.
- Targeting DREAM may offer therapeutic strategies for aging and neurodegenerative diseases.
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