Related Experiment Videos
4,4'Dimethoxychalcone: a natural flavonoid that promotes health through autophagy-dependent and -independent effects
Andreas Zimmermann1,2, Katharina Kainz1,2, Sebastian J Hofer1,3
1a Institute of Molecular Biosciences, NAWI Graz, University of Graz , Graz , Austria.
Abstract:
The age-induced deterioration of the organism results in detrimental and ultimately lethal pathologies. The process of aging itself involves a plethora of different mechanisms that should be subverted concurrently to delay and/or prevent age-related maladies. We have identified a natural compound, 4,4'-dimethoxychalcone (DMC), which promotes longevity in yeast, worms and flies, and protects mice from heart injury and liver toxicity. Interestingly, both the DMC-mediated lifespan extension and the cardioprotection depend on macroautophagy/autophagy whereas hepatoprotection does not. DMC induces autophagy by inhibiting specific GATA transcription factors (TFs), independently of the TORC1 kinase pathway. The autophagy-independent beneficial effects of DMC might involve its antioxidative properties. DMC treatment results in a phylogenetically conserved, systemic impact on the metabolome, which is most prominently characterized by changes in cellular amino acid composition. Altogether, DMC exerts multiple, geroprotective effects by igniting distinct pathways, and thus represents a potential pharmacological agent that delays aging through multipronged effects.
Insights
A natural compound, 4,4'-dimethoxychalcone (DMC), extends lifespan and protects against age-related diseases in multiple species. DMC utilizes distinct pathways, including autophagy, to achieve its protective effects.
Area of Science:
- Gerontology
- Molecular Biology
- Pharmacology
Background:
- Aging is a complex process involving multiple detrimental mechanisms leading to age-related diseases.
- Interventions targeting these mechanisms are crucial for delaying aging and extending healthspan.
Purpose of the Study:
- To investigate the potential of the natural compound 4,4'-dimethoxychalcone (DMC) as a geroprotective agent.
- To elucidate the mechanisms underlying DMC's effects on lifespan and age-related pathologies.
Main Methods:
- Tested DMC's effects on lifespan and healthspan in model organisms (yeast, worms, flies) and mice.
- Investigated DMC's impact on macroautophagy/autophagy, GATA transcription factors, TORC1 pathway, and metabolome.
- Assessed DMC's cardioprotective and hepatoprotective effects.
Main Results:
- DMC significantly promoted longevity in yeast, worms, and flies.
- DMC protected mice from heart injury and liver toxicity.
- DMC-mediated lifespan extension and cardioprotection were dependent on autophagy, while hepatoprotection was not.
- DMC inhibited GATA transcription factors independently of TORC1, affecting cellular amino acid composition.
- DMC exhibited conserved, systemic effects on the metabolome.
Conclusions:
- DMC demonstrates significant geroprotective effects across diverse species.
- DMC acts through multiple, distinct pathways, including autophagy-dependent and independent mechanisms.
- DMC represents a promising pharmacological agent for delaying aging and mitigating age-related diseases.