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Human neuroepithelial cells express NMDA receptors
Christopher D Sharp1, M Fowler, T H Jackson
1Department of Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, USA. csharp@lsuhsc.edu
BMC Neuroscience
|November 15, 2003
Summary
Human brain epithelial cells express NMDA receptors (NMDAR), challenging previous assumptions. This discovery is crucial for understanding neuroepithelial responses in brain diseases and excitotoxicity.
Area of Science:
- Neuroscience
- Cell Biology
- Neuroimmunology
Background:
- The blood-brain barrier (BBB) comprises cerebral endothelial and epithelial barriers.
- NMDA receptors (NMDAR) are critical for neuronal function but their presence in cerebral epithelial cells was unknown.
- Human cerebral endothelial cells are known to express NMDAR.
Purpose of the Study:
- To investigate the expression of NMDA receptors (NMDAR) in human cerebral epithelial cells.
- To determine if neuroepithelial cells express NMDAR mRNA and protein.
Main Methods:
- Immunohistochemistry was used to examine NMDAR expression in human hypothalamic sections.
- RT-PCR and Western blot analysis were performed on a murine neuroepithelial cell line (V1).
Main Results:
- Human cerebral epithelium was found to express NMDAR protein.
- Cultured mouse neuroepithelial cells expressed both NMDAR mRNA and protein.
Conclusions:
- This study demonstrates NMDAR expression in human cerebral epithelial cells and murine neuroepithelial cells.
- These findings suggest a potential role for NMDAR in neuroepithelial cells during excitotoxicity and disease states.
- Further research is warranted to explore the functional implications of NMDAR in the cerebral epithelium.