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Human cerebral endothelial cells are a potential source for bioactive BDNF.
A Bayas1, V Hummel, B A Kallmann
1Clinical Research Unit for Multiple Sclerosis and Neuroimmunology, Department of Neurology, University of Würzburg, Germany. antonios.bayas@mail.uni-wuerzburg.de
Cytokine
|August 17, 2002
Summary
Human cerebral endothelial cells (HCEC) produce brain-derived neurotrophic factor (BDNF), a key neuroprotective factor. This BDNF supports motoneuron survival, especially under inflammatory conditions, highlighting HCEC
Area of Science:
- Neuroscience
- Cell Biology
- Neuroinflammation
Background:
- Inflammatory stimuli in the central nervous system can cause damage but also offer neuroprotection.
- Brain-derived neurotrophic factor (BDNF) is recognized for its neuroprotective potential.
Purpose of the Study:
- To investigate the expression and bioactivity of BDNF in human cerebral endothelial cells (HCEC).
- To determine the role of BDNF produced by HCEC in motoneuron survival under inflammatory conditions.
Main Methods:
- Cultured HCEC and human umbilical vein endothelial cells (HUVEC) were treated with TNF-alpha.
- BDNF mRNA and protein levels were quantified using molecular assays.
- Functional assays assessed the bioactivity of BDNF in supporting motoneuron survival.
Main Results:
- BDNF is constitutively expressed in HCEC and upregulated by TNF-alpha, with significant protein elevation after 72 hours.
- BDNF produced by HCEC was demonstrated to be bioactive and support motoneuron survival.
- Conversely, TNF-alpha reduced BDNF expression in HUVEC.
Conclusions:
- Human cerebral endothelial cells contribute to neuronal survival under both physiological and inflammatory conditions.
- HCEC-derived BDNF plays a significant role in neuroprotection.
- Differential regulation of BDNF in HCEC versus HUVEC suggests cell-specific responses to inflammation.