Opposite effects of P2X7 and P2Y2 nucleotide receptors on α-secretase-dependent APP processing in Neuro-2a cells

FEBS Letters
Miriam León-OteguiJavier Gualix

Abstract

The amyloid precursor protein (APP) is proteolytically processed by β- and γ-secretases to release amyloid-β peptide (Aβ), the main component found in senile plaques of Alzheimer's disease (AD) patient brains. Alternatively, APP can be cleaved within the Aβ sequence by α-secretase, thus precluding the generation of Aβ. We have demonstrated that activation of the P2X7 receptor leads to a reduction of α-secretase activity in Neuro-2a cells. Moreover, the P2X7 ligand 2'(3')-O-(4-benzoylbenzoyl) ATP (BzATP) can also activate a different P2 receptor in these cells. This receptor, whose pharmacology resembles that of the P2Y(2) receptor, has an opposite effect, leading to increases in α-secretase activity. Our study suggests that P2X7R and P2Y(2)R could be novel therapeutic targets in AD.

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Citations

Jul 6, 2013·Journal of Chromatography. a·Clara IbáñezAlejandro Cifuentes
Dec 23, 2014·International Journal of Molecular Sciences·Kamila PuchałowiczVioletta Dziedziejko
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Jun 3, 2021·Cells·Stefania MerighiDavide Ferrari

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