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Updated: Aug 15, 2026
Depletion and Reconstitution of Macrophages in Mice
Published on: August 1, 2012
[Expression of macrophage colony stimulating factor in brains of PDAPPV717I transgenic mice]
Jian-min Zhang1, Qing-li Kong, Hong Wang
1Department of Immunology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005, China.
Objective:
To identify the expression and distribution of macrophage colony stimulating factor (M-CSF) in brains of PDAPPV717I transgenic mice.
Methods:
We detected the expression and distribution of M-CSF mRNA in brains of PDAPPV717I transgenic mice by using hybridization in situ and immunohistochemical staining.
Results:
Expression of M-CSF mRNA was significantly higher in brains of PDAPPV717I transgenic mice than that in non-transgenic mice, and M-CSF mRNA in brain was mainly produced by reactive astrocytes.
Conclusion:
The results indicate that astrocytes play an important role in the onset/development of neuropathology of Alzheimer's disease.
Insights
Reactive astrocytes in Alzheimer's disease models produce more macrophage colony-stimulating factor (M-CSF). This suggests astrocytes are key in the neuropathology of Alzheimer's disease.
Area of Science:
- Neuroscience
- Molecular Biology
- Pathology
Context:
- Alzheimer's disease (AD) is a progressive neurodegenerative disorder.
- Amyloid precursor protein (APP) mutations are linked to familial AD.
- PDAPPV717I transgenic mice model key aspects of AD neuropathology.
Purpose:
- To investigate the expression and localization of macrophage colony-stimulating factor (M-CSF) in the brains of PDAPPV717I transgenic mice.
- To determine the cellular source of M-CSF in the context of AD-like pathology.
Summary:
- Macrophage colony-stimulating factor (M-CSF) mRNA expression was significantly elevated in the brains of PDAPPV717I transgenic mice compared to non-transgenic controls.
- Immunohistochemical and in situ hybridization analyses revealed that M-CSF mRNA is predominantly produced by reactive astrocytes within the brain.
- These findings highlight a specific molecular pathway involving astrocytes in AD pathogenesis.
Impact:
- Astrocytes are implicated as significant contributors to the onset and progression of Alzheimer's disease neuropathology.
- Understanding M-CSF's role in astrocytes may reveal novel therapeutic targets for Alzheimer's disease.
- This research advances the understanding of glial cell involvement in neurodegenerative diseases.
