N-methyl-D-aspartate receptor-mediated calcium influx connects amyloid-β oligomers to ectopic neuronal cell cycle reentry in Alzheimer's disease.

ABSTRACT:

Introduction

Alzheimer's disease (AD) symptoms reflect synaptic dysfunction and neuron death. Amyloid-β oligomers (AβOs) induce excess calcium entry into neurons via N-methyl-D-aspartate receptors (NMDARs), contributing to synaptic dysfunction. The study described here tested the hypothesis that AβO-stimulated calcium entry also drives neuronal cell cycle reentry (CCR), a prelude to neuron death in AD.

Methods

Pharmacologic modulators of calcium entry and gene expression knockdown were used in cultured neurons and AD model mice.

Results

In cultured neurons, AβO-stimulated CCR was blocked by NMDAR antagonists, total calcium chelation with 1,2-Bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid tetrakis(acetoxymethyl ester) (BAPTA-AM), or knockdown of the NMDAR subunit

SUBMITTER: Kodis EJ 

PROVIDER: S-EPMC8363206 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature