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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Redox-Based Flagging of the Global Network of Oxidative Stress Greatly Promotes Longevity

Donatella Canistro1, Caterina Boccia2, Rosanna Falconi2

  • 1Department of Pharmacy and Biotechnology and donatella.canistro@unibo.it.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|September 6, 2014
PubMed

Insights

A novel catalytic drug significantly extends the lifespan of annelids by 170% by scavenging multiple free radicals, suggesting a new approach to combat aging and oxidative stress.

Area of Science:

  • Gerontology
  • Biochemistry
  • Pharmacology

Background:

  • The direct role of oxidative stress (OS) in aging and age-related diseases remains unproven despite extensive research.
  • Current antioxidant drugs show limited success due to issues like selectivity, variable efficacy, and pro-oxidant effects.

Purpose of the Study:

  • To investigate the impact of a novel redox-active, multi-radical-scavenger catalytic drug on aging and lifespan.
  • To explore the potential of targeting the global network of OS for therapeutic intervention in aging.

Main Methods:

  • Treatment of the freshwater annelid Aeolosoma viride with a novel catalytic drug designed to scavenge multiple free radicals.
  • Comparison of lifespan extension and OS status with a superoxide dismutase (SOD)-mimetic drug (EUK 134).
  • Assessment of physiological processes, mitochondrial respiration, and reproductive activity.

Main Results:

  • The novel drug markedly prolonged the mean lifespan of Aeolosoma viride by 170%, significantly outperforming the SOD-mimetic EUK 134 (~50% increase).
  • Lifespan extension was associated with decreased OS status and increased resistance to oxygen-derived damage.
  • No adverse effects on mitochondrial respiration or reproductive activity were observed.

Conclusions:

  • Reduction of the global network of OS has a profound impact on aging.
  • The developed multi-radical-scavenger catalytic drug shows unprecedented efficacy in extending lifespan and counteracting age-associated decline.
  • This study prompts the development of redox-based therapeutic interventions for aging.
Keywords:
LongevityOxidative stress

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