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Updated: May 8, 2026
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SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs
Published on: June 28, 2019
Berberine suppresses gero-conversion from cell cycle arrest to senescence
Hong Zhao1, H Dorota Halicka, Jiangwei Li
1Brander Cancer Research Institute and Department of Pathology, New York Medical College, Valhalla, NY 10595, USA.
Aging
|August 27, 2013
Summary
Berberine (BRB) effectively suppresses cellular senescence by inhibiting mTOR/S6 signaling and reducing DNA damage. This natural compound shows promise as a gero-suppressive agent, potentially explaining its benefits in age-related diseases.
Area of Science:
- Cellular Biology
- Geroscience
- Pharmacology
Background:
- Berberine (BRB), a natural alkaloid with historical medicinal use, is increasingly recognized for its potential therapeutic applications.
- Previous research indicated BRB inhibits mTOR/S6 signaling, reducing endogenous oxidants and DNA damage.
- Cellular senescence, a state of irreversible growth arrest, is implicated in aging and age-related diseases.
Purpose of the Study:
- To investigate the effect of Berberine on premature, stress-induced cellular senescence.
- To elucidate the underlying mechanisms by which Berberine may counteract senescence.
- To assess Berberine's potential as a gero-suppressive agent.
Main Methods:
- Quantitatively measured senescence markers including morphometrics, β-galactosidase activity, p21WAF1 induction, and replication stress (γH2AX).
- Assessed mTOR signaling via ribosomal S6 protein (rpS6) phosphorylation.
- Utilized an in vitro model of mitoxantrone-induced premature cellular senescence.
Main Results:
- Berberine significantly diminished all measured senescence markers in a concentration-dependent manner.
- BRB inhibited mTOR/S6 signaling and reduced constitutive DNA damage response.
- Rhodamine123, targeting mitochondrial electron chain, also suppressed rpS6 phosphorylation, supporting a mitochondrial role.
Conclusions:
- Berberine exhibits gero-suppressive properties by inhibiting mTOR/S6 signaling and reducing DNA damage.
- The observed effects are likely mediated by AMPK activation and subsequent mTOR inhibition, potentially linked to mitochondrial effects.
- Berberine's gero-suppressive activity may underlie its benefits in age-related diseases, positioning it as a key therapeutic agent.
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