Article (Scientific journals)
CXCR3 promotes plaque formation and behavioral deficits in an Alzheimer's disease model.
Krauthausen, Marius; Kummer, Markus P; Zimmermann, Julian et al.
2015In Journal of Clinical Investigation, 125 (1), p. 365 - 378
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Keywords :
Amyloid beta-Peptides; Chemokine CXCL10; Chemokine CXCL9; Cxcl10 protein, mouse; Cxcl9 protein, mouse; Cxcr3 protein, mouse; Receptors, CXCR3; Tumor Necrosis Factor-alpha; Alzheimer Disease/metabolism; Alzheimer Disease/pathology; Amyloid beta-Peptides/metabolism; Animals; Astrocytes/metabolism; Cells, Cultured; Chemokine CXCL10/genetics; Chemokine CXCL10/metabolism; Chemokine CXCL9/genetics; Chemokine CXCL9/metabolism; Female; Male; Maze Learning; Mice, Inbred C57BL; Mice, Knockout; Microglia/metabolism; Phagocytosis; Plaque, Amyloid/pathology; Receptors, CXCR3/physiology; Signal Transduction; Transcriptional Activation; Tumor Necrosis Factor-alpha/metabolism; Alzheimer Disease; Astrocytes; Microglia; Plaque, Amyloid; Medicine (all); General Medicine
Abstract :
[en] Chemokines are important modulators of neuroinflammation and neurodegeneration. In the brains of Alzheimer's disease (AD) patients and in AD animal models, the chemokine CXCL10 is found in high concentrations, suggesting a pathogenic role for this chemokine and its receptor, CXCR3. Recent studies aimed at addressing the role of CXCR3 in neurological diseases indicate potent, but diverse, functions for CXCR3. Here, we examined the impact of CXCR3 in the amyloid precursor protein (APP)/presenilin 1 (PS1) transgenic mouse model of AD. We found that, compared with control APP/PSI animals, plaque burden and Aβ levels were strongly reduced in CXCR3-deficient APP/PS1 mice. Analysis of microglial phagocytosis in vitro and in vivo demonstrated that CXCR3 deficiency increased the microglial uptake of Aβ. Application of a CXCR3 antagonist increased microglial Aβ phagocytosis, which was associated with reduced TNF-α secretion. Moreover, in CXCR3-deficient APP/PS1 mice, microglia exhibited morphological activation and reduced plaque association, and brain tissue from APP/PS1 animals lacking CXCR3 had reduced concentrations of proinflammatory cytokines compared with controls. Further, loss of CXCR3 attenuated the behavioral deficits observed in APP/PS1 mice. Together, our data indicate that CXCR3 signaling mediates development of AD-like pathology in APP/PS1 mice and suggest that CXCR3 has potential as a therapeutic target for AD.
Disciplines :
Neurology
Author, co-author :
Krauthausen, Marius;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Kummer, Markus P;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Zimmermann, Julian;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Reyes-Irisarri, Elisabet;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Terwel, Dick;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Bulic, Bruno;  Laboratory of Organic Synthesis of Functional Systems, Humboldt-Universität zu Berlin, Berlin, Germany
HENEKA, Michael  ;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
Müller, Marcus;  Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
External co-authors :
yes
Language :
English
Title :
CXCR3 promotes plaque formation and behavioral deficits in an Alzheimer's disease model.
Publication date :
January 2015
Journal title :
Journal of Clinical Investigation
ISSN :
0021-9738
eISSN :
1558-8238
Publisher :
American Society for Clinical Investigation, United States
Volume :
125
Issue :
1
Pages :
365 - 378
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 07 May 2024

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