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Updated: Apr 25, 2026

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
08:09

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

Published on: January 7, 2014

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SIRT2 enhances 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced nigrostriatal damage via apoptotic pathway

Lei Liu1, Anirudh Arun1, Lakia Ellis1

  • 1Department of Neuroscience, Tufts University School of Medicine Boston, MA, USA.

Frontiers in Aging Neuroscience
|August 27, 2014
PubMed

Insights

Sirtuin 2 (SIRT2) promotes apoptosis in Parkinson's Disease models by deacetylating Foxo3a, increasing Bim levels. Inhibiting SIRT2 may offer a novel therapeutic strategy for Parkinson's Disease.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Biochemistry

Background:

  • Sirtuins, particularly SIRT2, are implicated in neurodegenerative diseases.
  • MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) is a neurotoxin modeling Parkinson's Disease (PD).
  • MPTP induces dopaminergic neuron apoptosis.

Purpose of the Study:

  • To investigate the role of SIRT2 in MPTP-induced neurodegeneration.
  • To elucidate the molecular mechanism by which SIRT2 affects apoptosis in PD models.

Main Methods:

  • Utilized the MPTP mouse model of Parkinson's Disease.
  • Investigated the effects of genetic deletion of SIRT2 on neurodegeneration and apoptosis.
  • Examined the interaction between SIRT2, Foxo3a, and Bim in cellular and animal models.

Main Results:

  • SIRT2 deacetylates Foxo3a, upregulating Bim and enhancing apoptosis in MPTP-treated cells.
  • Genetic deletion of SIRT2 prevented MPTP-induced neurodegeneration by increasing Foxo3a acetylation and decreasing Bim levels.
  • SIRT2-mediated Foxo3a deacetylation and Bim activation were observed in MPP(+)-treated cells.

Conclusions:

  • SIRT2 plays a critical role in mediating apoptosis in Parkinson's Disease models.
  • Targeting SIRT2 with inhibitors could be a potential therapeutic approach for Parkinson's Disease.
Keywords:
MPTPParkinson's DiseaseSIRT2apoptosissirtuin

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