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Cognitive enhancement, TAU phosphorylation reduction, and neuronal protection by the treatment of an LRRK2 inhibitor in a tauopathy mouse model

AuthorsCastro-Sánchez, Sara; Zaldívar-Díez, Josefa; Luengo, Enrique; López, Manuela G.; Gil, Carmen ; Martínez, Ana ; Lastres-Becker,Isabel
Synaptic plasticity
Issue DateDec-2020
CitationNeurobiology of Aging 96:148-154 (2020)
AbstractLeucine-rich repeat kinase 2 (LRRK2) is a protein kinase whose activity plays an important role in neurodegenerative diseases. Although mutations in LRRK2 gene are the most common cause of monogenic Parkinson's disease, it has been reported that LRRK2 may promote Tau phosphorylation, increasing its aggregation. Thus, the modulation of LRRK2 activity by small molecules able to inhibit this kinase activity could be an innovative therapeutic strategy for different tauopathies. We examined the therapeutic effects of a new benzothiazole-based LRRK2 inhibitor, known as JZ1.40, in a mouse model of tauopathy. Mice were injected in the right hippocampus with an adeno-associated vector expressing human-TAUP301L and treated daily with JZ1.40 (10 mg/kg, i.p) or vehicle for three weeks. JZ1.40 reaches the brain and modulates RAB10 and Tau phosphorylation at the epitopes modified by LRRK2. Moreover, JZ1.40 treatment ameliorates the cognitive impairment induced by TAUP301L overexpression, which correlates with prevention of granular cell layer degeneration by improving synaptic plasticity. These data show that JZ1.40 is neuroprotective in vivo, which is translated into cognition enhancement.
Description7 p.-2 fig.
Publisher version (URL)https://doi.org/10.1016/j.neurobiolaging.2020.09.006
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