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Resveratrol preserves mitochondrial function in a human post-mitotic cell model.

Gianluca Sgarbi1, Francesca Liuzzi1, Alessandra Baracca1

  • 1Department of Biomedical and Neuromotor Sciences, Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, via Irnerio, 48, 40126 Bologna, Italy.

The Journal of Nutritional Biochemistry
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Resveratrol (RSV) protects human cells from mitochondrial dysfunction, a key factor in aging and disease. This study demonstrates RSV

Keywords:
Complex IFibroblastsMitochondriaROSResveratrol

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Area of Science:

  • Mitochondrial biology and genetics
  • Cellular senescence and aging
  • Bioenergetics and oxidative stress

Background:

  • Mitochondrial DNA (mtDNA) dysfunctions cause mitochondrial diseases and are linked to aging.
  • Existing cellular models lack the ability to screen for protective molecules against mitochondrial defects.
  • Mitochondrial dysfunction contributes to age-related diseases and cellular senescence.

Purpose of the Study:

  • To develop and utilize an original cellular model for identifying molecules that prevent mitochondrial dysfunction.
  • To investigate the protective effects of resveratrol (RSV) on human fibroblasts with Complex I deficiency.
  • To assess RSV's impact on cellular ATP levels, oxidative stress, and mitochondrial integrity.

Main Methods:

  • Developed a cellular model using resting human fibroblasts under serum absence, gramicidin presence, and glucose deficiency.
  • Exposed fibroblasts to rotenone, a Complex I inhibitor, with and without pre-incubation with resveratrol (RSV).
  • Assessed cell viability, mitochondrial fragmentation, ATP levels, reactive oxygen species (ROS) production, and mitochondrial membrane potential.

Main Results:

  • RSV pre-incubation significantly enhanced fibroblast viability when exposed to rotenone.
  • RSV reduced rotenone-induced mitochondrial fragmentation and preserved cellular ATP levels.
  • RSV limited reactive oxygen species (ROS) production and maintained mitochondrial membrane potential.

Conclusions:

  • Resveratrol (RSV) demonstrates protective effects against mitochondrial dysfunction at low concentrations.
  • RSV can prevent bioenergetic defects and oxidative stress associated with mitochondrial diseases and aging.
  • RSV holds potential for preventing or treating mitochondrial disorders and mitigating cellular senescence.