Reversal of ApoE4-induced recycling block as a novel prevention approach for Alzheimer's disease

© 2018, Xian et al..

ApoE4 genotype is the most prevalent and also clinically most important risk factor for late-onset Alzheimer's disease (AD). Available evidence suggests that the root cause for this increased risk is a trafficking defect at the level of the early endosome. ApoE4 differs from the most common ApoE3 isoform by a single amino acid that increases its isoelectric point and promotes unfolding of ApoE4 upon endosomal vesicle acidification. We found that pharmacological and genetic inhibition of NHE6, the primary proton leak channel in the early endosome, in rodents completely reverses the ApoE4-induced recycling block of the ApoE receptor Apoer2/Lrp8 and the AMPA- and NMDA-type glutamate receptors that are regulated by, and co-endocytosed in a complex with, Apoer2. Moreover, NHE6 inhibition restores the Reelin-mediated modulation of excitatory synapses that is impaired by ApoE4. Our findings suggest a novel potential approach for the prevention of late-onset AD.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:7

Enthalten in:

eLife - 7(2018) vom: 30. Okt.

Sprache:

Englisch

Beteiligte Personen:

Xian, Xunde [VerfasserIn]
Pohlkamp, Theresa [VerfasserIn]
Durakoglugil, Murat S [VerfasserIn]
Wong, Connie H [VerfasserIn]
Beck, Jürgen K [VerfasserIn]
Lane-Donovan, Courtney [VerfasserIn]
Plattner, Florian [VerfasserIn]
Herz, Joachim [VerfasserIn]

Links:

Volltext

Themen:

Apolipoprotein E4
EC 3.4.21.-
Endosome
Human
Human biology
Journal Article
LDL-Receptor Related Proteins
Low density lipoprotein receptor-related protein 8
Medicine
Mouse
NHE
NHE6 protein, mouse
Neurodegeneration
Neuroscience
RELN protein, human
Rat
Receptors, Glutamate
Recycling
Reelin Protein
Reln protein, mouse
Reln protein, rat
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Sodium-Hydrogen Exchangers
Synaptic plasticity

Anmerkungen:

Date Completed 11.03.2019

Date Revised 04.12.2021

published: Electronic

Citation Status MEDLINE

doi:

10.7554/eLife.40048

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM290096677