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Published in: Journal of Neuroinflammation 1/2016

Open Access 01-12-2016 | Research

Chronic administration of AMD3100 increases survival and alleviates pathology in SOD1G93A mice model of ALS

Authors: Inna Rabinovich-Nikitin, Assaf Ezra, Beka Barbiro, Polina Rabinovich-Toidman, Beka Solomon

Published in: Journal of Neuroinflammation | Issue 1/2016

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Abstract

Background

Amyotrophic lateral sclerosis (ALS) is a progressive fatal neurodegenerative disease, involving both upper and lower motor neurons. The disease is induced by multifactorial pathologies, and as such, it requires a multifaceted therapeutic approach. CXCR4, a chemokine receptor widely expressed in neurons and glial cells and its ligand, CXCL12, also known as stromal-cell-derived factor (SDF1), modulate both neuronal function and apoptosis by glutamate release signaling as well as hematopoietic stem and progenitor cells (HSPCs) migration into the blood and their homing towards injured sites. Inhibition approaches towards the CXCR4/CXCL12 signaling may result in preventing neuronal apoptosis and alter the HSPCs migration and homing. Such inhibition can be achieved by means of treatment with AMD3100, an antagonist of the chemokine receptor CXCR4.

Methods

We chronically treated male and female transgenic mice model of ALS, SOD1G93A mice, with AMD3100. Mice body weight and motor function, evaluated by Rotarod test, were recorded once a week. The most effective treatment regimen was repeated for biochemical and histological analyses in female mice.

Results

We found that chronic administration of AMD3100 to SOD1G93A mice led to significant extension in mice lifespan and improved motor function and weight loss. In addition, the treatment significantly improved microglial pathology and decreased proinflammatory cytokines in spinal cords of treated female mice. Furthermore, AMD3100 treatment decreased blood-spinal cord barrier (BSCB) permeability by increasing tight junction proteins levels and increased the motor neurons count in the lamina X area of the spinal cord, where adult stem cells are formed.

Conclusions

These data, relevant to the corresponding disease mechanism in human ALS, suggest that blocking CXCR4 by the small molecule, AMD3100, may provide a novel candidate for ALS therapy with an increased safety.
Appendix
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Metadata
Title
Chronic administration of AMD3100 increases survival and alleviates pathology in SOD1G93A mice model of ALS
Authors
Inna Rabinovich-Nikitin
Assaf Ezra
Beka Barbiro
Polina Rabinovich-Toidman
Beka Solomon
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Journal of Neuroinflammation / Issue 1/2016
Electronic ISSN: 1742-2094
DOI
https://doi.org/10.1186/s12974-016-0587-6

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