Dihydropyridine derivatives modulate heat shock responses and have a neuroprotective effect in a transgenic mouse model of Alzheimer’s disease

Kasza, Ágnes, Hunya, Ákos, Frank, Zsuzsa, Fülöp, Ferenc, Török, Zsolt, Balogh, Gábor, Sántha, Miklós, Bálind, Árpád, Bernáth, Sándor, Blundell, Katie L I M, Prodromou, Chrisostomos, Horváth, Ibolya, Zeiler, Hans-Joachim, Hooper, Philip L, Vigh, László and Penke, Botond (2016) Dihydropyridine derivatives modulate heat shock responses and have a neuroprotective effect in a transgenic mouse model of Alzheimer’s disease. Journal of Alzheimer's Disease, 53 (2). pp. 557-571. ISSN 1387-2877

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Abstract

Heat shock proteins (Hsps) have chaperone activity and play a pivotal role in the homeostasis of proteins by preventing misfolding, by clearing aggregated and damaged proteins from cells and by maintaining proteins in an active state. Alzheimer’s disease (AD) is thought to be caused by β- amyloid peptide that triggers tau hyperphosphorylation, which is neurotoxic. Although proteostasis capacity declines with age and facilitates the manifestation of neurodegenerative diseases such as AD, the upregulation of chaperones improves prognosis. Our research goal is to identify potent Hsp co-inducers that enhance protein homeostasis for the treatment of AD, especially 1,4-dihydropyridine derivatives optimized for their ability to modulate cellular stress responses. Based on favorable toxicological data and Hsp co-inducing activity, LA1011 was selected for the in vivo analysis of its neuroprotective effect in the APPxPS1 mouse model of AD. Here, we report that 6 months of LA1011 administration effectively improved the spatial learning and memory functions in wild type mice and eliminated neurodegeneration in double mutant mice. Furthermore, Hsp co-inducer therapy preserves the number of neurons, increases dendritic spine density, and reduces tau pathology and amyloid plaque formation in transgenic AD mice. In conclusion, the Hsp co-inducer LA1011 is neuroprotective and therefore is a potential pharmaceutical candidate for the therapy of neurodegenerative diseases, particularly AD.

Item Type: Article
Schools and Departments: School of Life Sciences > Biochemistry
Subjects: Q Science > QP Physiology > QP0501 Animal biochemistry
R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry > RC0346 Neurology. Diseases of the nervous system Including speech disorders > RC0349.8 Therapeutics > RC0360 Diseases of the central nervous system
Depositing User: Chrisostomos Prodromou
Date Deposited: 11 Apr 2016 15:56
Last Modified: 06 Mar 2017 09:17
URI: http://sro.sussex.ac.uk/id/eprint/60402

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