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The marijuana component cannabidiol inhibits β-amyloid-induced tau protein hyperphosphorylation through Wnt/β-catenin pathway rescue in PC12 cells

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Abstract

Alzheimer’s disease (AD) is the most common age-related neurodegenerative disorder. A massive accumulation of β-amyloid (Aβ) peptide aggregates has been proposed as pivotal event in AD. Aβ-induced toxicity is accompanied by a variegated combination of events including oxidative stress. The Wnt pathway has multiple actions in the cascade of events triggered by Aβ, and drugs that rescue Wnt activity may be considered as novel therapeutics for AD treatment. Cannabidiol, a non-psychoactive marijuana component, has been recently proposed as an antioxidant neuroprotective agent in neurodegenerative diseases. Moreover, it has been shown to rescue PC12 cells from toxicity induced by Aβ peptide. However, the molecular mechanism of cannabidiol-induced neuroprotective effect is still unknown. Here, we report that cannabidiol inhibits hyperphosphorylation of tau protein in Aβ-stimulated PC12 neuronal cells, which is one of the most representative hallmarks in AD. The effect of cannabidiol is mediated through the Wnt/β-catenin pathway rescue in Aβ-stimulated PC12 cells. These results provide new molecular insight regarding the neuroprotective effect of cannabidiol and suggest its possible role in the pharmacological management of AD, especially in view of its low toxicity in humans.

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Acknowledgement

This work was supported by COFIN 2004.

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Authors and Affiliations

  1. Department of Experimental Pharmacology, Faculty of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131, Naples, Italy

    Giuseppe Esposito, Daniele De Filippis, Rosa Carnuccio, Angelo A. Izzo & Teresa Iuvone

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  1. Giuseppe Esposito
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  2. Daniele De Filippis
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  3. Rosa Carnuccio
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  4. Angelo A. Izzo
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  5. Teresa Iuvone
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Correspondence to Teresa Iuvone.

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Esposito, G., De Filippis, D., Carnuccio, R. et al. The marijuana component cannabidiol inhibits β-amyloid-induced tau protein hyperphosphorylation through Wnt/β-catenin pathway rescue in PC12 cells. J Mol Med 84, 253–258 (2006). https://doi.org/10.1007/s00109-005-0025-1

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