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Updated: Nov 20, 2025
Quantitative 3D In Silico Modeling q3DISM of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease
Published on: December 26, 2016
Quantitative in vivo assessment of amyloid-beta phagocytic capacity in an Alzheimer's disease mouse model
Shun-Fat Lau1,2, Wei Wu1,2, Heukjin Seo1,2
1Division of Life Science, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
Abstract:
Alzheimer's disease is characterized by the deposition of extracellular amyloid-beta (Aβ) plaques. While microglial phagocytosis is a major mechanism through which Aβ is cleared, there is no method for quantitatively assessing Aβ phagocytic capacity of microglia in vivo. Here, we present a flow cytometry-based method for investigating the Aβ phagocytic capacity of microglia in vivo. This method enables the direct comparison of Aβ phagocytic capacity between different microglial subpopulations as well as the direct isolation of Aβ phagocytic microglia for downstream applications. For complete details on the use and execution of this protocol, please refer to Lau et al. (2020).
Insights
Researchers developed a new flow cytometry method to quantify amyloid-beta (Aβ) phagocytosis by microglia in vivo. This technique allows for comparing microglial phagocytic capacity and isolating Aβ-engulfing cells for further study.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Alzheimer's disease pathology involves amyloid-beta (Aβ) plaque deposition.
- Microglial phagocytosis is a key mechanism for clearing Aβ in the brain.
- Quantitative methods to assess microglial Aβ phagocytic capacity in vivo are lacking.
Purpose of the Study:
- To develop and validate a novel flow cytometry-based method for quantitatively assessing Aβ phagocytic capacity of microglia in vivo.
- To enable direct comparison of phagocytic abilities across different microglial subpopulations.
- To facilitate the isolation of phagocytic microglia for subsequent molecular analyses.
Main Methods:
- Utilized flow cytometry for in vivo analysis of microglial phagocytosis.
- Developed a protocol to measure the uptake of amyloid-beta by microglia.
- Enabled isolation of phagocytic microglia based on Aβ uptake.
Main Results:
- Successfully established a flow cytometry method to quantify Aβ phagocytosis by microglia in vivo.
- Demonstrated the ability to compare Aβ phagocytic capacity between distinct microglial populations.
- Showcased the isolation of Aβ-phagocytic microglia for downstream applications.
Conclusions:
- The developed flow cytometry method provides a quantitative tool for studying microglial phagocytosis of Aβ in vivo.
- This method advances our understanding of microglial function in Alzheimer's disease.
- It offers a valuable approach for identifying and isolating Aβ-clearing microglia.
