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A protein restriction-dependent sulfur code for longevity.

Hong Seok Shim1, Valter D Longo2

  • 1Department of Biological Sciences, University of Southern California, 3715 McClintock Avenue, Los Angeles, CA 90089, USA.

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Protein restriction, a key factor in calorie restriction benefits, is linked to hydrogen sulfide (H2S) gas. This study shows H2S protects against injury and may extend lifespan in model organisms.

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Area of Science:

  • Biomedical Science
  • Molecular Biology
  • Physiology

Background:

  • Calorie restriction (CR) offers health benefits, with protein restriction (PR) emerging as a critical component.
  • Ischemia/reperfusion injury (IRI) is a significant clinical challenge.
  • Hydrogen sulfide (H2S) is a gasotransmitter with known biological functions.

Purpose of the Study:

  • To investigate the role of hydrogen sulfide (H2S) in the protective effects of calorie and protein restriction.
  • To explore H2S involvement in mitigating ischemia/reperfusion injury (IRI).
  • To examine the potential of H2S in longevity extension.

Main Methods:

  • Utilized model organisms to study IRI.
  • Administered calorie and protein restriction protocols.
  • Measured H2S levels and biological responses.

Main Results:

  • Demonstrated that H2S mediates protective effects of PR against IRI.
  • Provided evidence linking H2S to longevity extension in model organisms.
  • Established a strong connection between H2S, CR, and PR.

Conclusions:

  • Hydrogen sulfide (H2S) plays a crucial role in the beneficial outcomes of calorie and protein restriction.
  • H2S confers protection against ischemia/reperfusion injury.
  • H2S is implicated as a key mediator of longevity extension.