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Mannose receptor is present in a functional state in rat microglial cells
M P Marzolo1, R von Bernhardi, N C Inestrosa
1Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
Journal of Neuroscience Research
|October 13, 1999
Summary
Mannose receptor (ManR) is present and functional in rat microglial cells. This finding suggests ManR
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglial cells are key immune cells in the central nervous system (CNS).
- The mannose receptor (ManR) is crucial for macrophage phagocytic and endocytic functions.
- Evidence links acetylcholinesterase (AchE) to Alzheimer's disease (AD), with potential ManR involvement.
Purpose of the Study:
- To investigate the expression and functionality of ManR in rat microglial cells.
- To explore ManR's role in CNS physiological and pathological processes.
Main Methods:
- Isolation of microglial cells from neonatal rat brains.
- Detection of ManR using immunocytochemistry, Western blot, and immunoprecipitation.
- Assessment of ManR functionality via horseradish peroxidase (HRP) internalization assays.
Main Results:
- Rat microglial cells express ManR, confirmed by multiple detection methods.
- Microglial ManR expression is modulated by lipopolysaccharide (LPS) and dexamethasone.
- Functional ManR in microglia mediates HRP uptake in a mannan-sensitive manner.
Conclusions:
- Microglial cells possess a functional mannose receptor.
- ManR in microglia may play a role in CNS inflammation, ischemia, and neurodegenerative diseases like AD.