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Related Experiment Video

Updated: Aug 13, 2025

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

Published on: August 21, 2017

ApoE4 makes microglia trem²bling.

Michael T Heneka¹

¹Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-sur-Alzette, Luxembourg; Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, North Worcester, MA, USA.

|January 19, 2023

Summary

This summary is machine-generated.

The ApoE-Trem2 pathway is crucial for Alzheimer's disease risk. Trem2 deficiency worsens neurodegeneration in mice carrying the ApoE4 gene, indicating a complex genetic interaction.

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Area of Science:

Neuroscience
Genetics
Molecular Biology

Background:

The apolipoprotein E (ApoE) and triggering receptor expressed on myeloid cells 2 (Trem2) pathways are implicated in sporadic Alzheimer's disease (AD) genetics.
Genetic variants in ApoE and Trem2 are significant risk factors for developing AD.

Purpose of the Study:

To investigate the functional interaction between the ApoE-Trem2 pathway in the context of Alzheimer's disease pathogenesis.
To determine the impact of Trem2 deficiency on neurodegeneration in a model expressing a high-risk human ApoE variant.

Main Methods:

Utilized a mouse model expressing human ApoE4 with tau mutations.
Assessed the effects of Trem2 deficiency on neurodegenerative processes within this model.

Main Results:

Trem2 deficiency exacerbated neurodegeneration in tau mutant mice expressing human ApoE4.
This suggests a significant interplay between Trem2 and ApoE4 in AD pathology.

Conclusions:

The ApoE-Trem2 pathway exhibits complex interactions relevant to Alzheimer's disease.
Future research should consider the impact of all human ApoE variants on these molecular interactions.