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In Vitro Phagocytosis of Myelin Debris by Bone Marrow-Derived Macrophages
Published on: December 30, 2017
In Vitro Phagocytosis of Myelin Debris by Bone Marrow-Derived Macrophages
Alyssa J Rolfe1, Dale B Bosco1, Erynn N Broussard1
1Department of Biomedical Sciences, College of Medicine, Florida State University.
Abstract:
Bone marrow-derived macrophages (BMDMs) are mature leukocytes that serve a critical physiological role as professional phagocytes capable of clearing a variety of particles. Normally, BMDMs are restricted from the central nervous system (CNS), but following an injury, they can readily infiltrate. Once within the injured CNS tissue, BMDMs are the primary cell type responsible for the clearance of injury-derived cellular debris, including large quantities of lipid rich myelin debris. The neuropathological ramifications of BMDM infiltration and myelin debris phagocytosis within the CNS are complex and not well understood. The protocols described here, allow for the direct in vitro study of BMDMs in the context of CNS injury. We cover murine BMDM isolation and culture, myelin debris preparation, and assays to assess BMDM myelin debris phagocytosis. These techniques produce robust quantifiable results without the need for significant specialized equipment or materials, yet can be easily customized to meet the needs of researchers.
Insights
Bone marrow-derived macrophages (BMDMs) are key phagocytes that clear debris in the central nervous system (CNS) after injury. This study provides protocols for studying BMDM myelin phagocytosis in vitro.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Bone marrow-derived macrophages (BMDMs) are professional phagocytes crucial for clearing cellular debris.
- BMDMs are normally excluded from the central nervous system (CNS) but infiltrate after injury.
- These macrophages clear myelin debris in the injured CNS, with complex, poorly understood neuropathological consequences.
Purpose of the Study:
- To establish protocols for the direct in vitro study of BMDMs in the context of CNS injury.
- To enable detailed investigation of BMDM infiltration and myelin debris phagocytosis within the CNS.
Main Methods:
- Isolation and culture of murine BMDMs.
- Preparation of myelin debris.
- Assays to quantify BMDM phagocytosis of myelin debris.
Main Results:
- The described techniques yield robust and quantifiable results.
- Minimal specialized equipment or materials are required.
- The protocols are customizable for various research needs.
Conclusions:
- The provided methods facilitate in vitro study of BMDM-mediated myelin debris clearance in CNS injury models.
- These protocols offer a valuable tool for researchers investigating neuroinflammation and neuropathology.
- Understanding BMDM roles in CNS injury is critical for developing therapeutic strategies.
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