ArticleFrontiers in neuroscience2026
α-Lipoic acid suppresses p53 by preventing annexin A2 degradation to protect dopaminergic neurons in a Parkinson's disease model.
Article in Frontiers in neuroscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: p53 plays a critical role in Parkinson's disease (PD) pathogenesis. p53 activation induces mitochondrial dysfunction and reactive oxygen species (ROS) production, contributing to progressive dopaminergic neuron degeneration. Although α-lipoic acid (ALA) exhibits neuroprotective effects in neurodegeneration, its underlying mechanisms remain unclear. This study investigated the neuroprotective role and molecular mechanism of ALA in 1-methyl-4-phenylpyridinium (MPP Methods: Neuroprotective effects of ALA on dopaminergic neurons were assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay for cell viability, Hoechst 33258 staining and flow cytometry to detect cellular apoptosis, and western blot analysis. Results: ALA treatment significantly inhibited p53 expression and attenuated MPP Conclusions: ALA downregulates p53 expression by preventing annexin A2 degradation, thereby reducing p53 protein levels and providing neuroprotection under neurodegenerative conditions. This suggests the potential of ALA in modulating p53 pathways for PD therapy.
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