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Updated: Aug 13, 2026
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SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs
Published on: June 28, 2019
Use of microarray biomarkers to identify longevity therapeutics
1Department of Biochemistry, University of California, Riverside, CA 92521, USA. spindler@ucr.edu
Aging Cell
|January 31, 2006
Summary
Caloric restriction (CR) pathways influence longevity. Metformin, a CR mimetic drug, effectively reproduces CR
Area of Science:
- Biogerontology
- Molecular Biology
- Pharmacology
Background:
- Caloric restriction (CR) influences longevity and healthspan through conserved regulatory pathways.
- CR rapidly impacts gene expression in key organs like the liver and heart.
- Understanding CR's molecular mechanisms may lead to pharmaceuticals that extend human healthspan.
Purpose of the Study:
- To identify existing pharmaceuticals that mimic the molecular effects of CR.
- To evaluate glucoregulatory drugs and cancer chemopreventatives as potential CR mimetics.
- To test if metformin can replicate the gene expression profile of long-term CR (LTCR).
Main Methods:
- Comparing hepatic gene-expression profiles between CR mice and mice treated with various drugs.
- Evaluating the effectiveness of metformin and phenformin in mouse models.
- Utilizing gene-expression biomarkers to identify CR mimetics.
Main Results:
- Metformin treatment (8 weeks) was more effective than 8 weeks of CR in reproducing LTCR-induced transcript changes.
- Metformin is associated with reduced cancer incidence and improved metabolic syndrome in humans.
- Metformin extended mean and maximum lifespans in female transgenic HER-2/neu mice by 8% and 13.1%, respectively.
- Phenformin also demonstrated lifespan extension and reduced tumor incidence in mice.
Conclusions:
- Gene-expression biomarkers are valuable for identifying promising CR mimetics.
- Metformin shows significant potential as a CR mimetic for healthspan and lifespan extension.
- Pharmaceuticals mimicking CR's molecular pathways may offer therapeutic applications for human health.
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