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Ascorbic acid upregulates myelin gene expression in C6 glioma cells
I Laszkiewicz1, R C Wiggins, G Konat
1Department of Anatomy, West Virginia University School of Medicine, Morgantown 26505.
Metabolic Brain Disease
|September 1, 1992
Summary
Ascorbic acid (AA) at physiological levels does not alter rat glioma C6 cell morphology or proliferation. However, AA transiently upregulates myelin-specific gene expression, suggesting a role in central nervous system myelin regulation.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Glioma C6 cells are a common model for studying brain tumors.
- Myelin gene expression is crucial for central nervous system (CNS) function.
- Ascorbic acid (vitamin C) is an essential nutrient with antioxidant properties.
Purpose of the Study:
- To investigate the effects of ascorbic acid (AA) on rat glioma C6 cells.
- To determine if AA influences cell morphology, proliferation, or myelin gene expression.
Main Methods:
- Rat glioma C6 cells were treated with physiological concentrations of ascorbic acid (0.1 and 1 mM).
- Cell morphology and proliferation were assessed.
- Gene expression of myelin-specific markers, proteolipid protein (PLP) and myelin-associated glycoprotein (MAG), was analyzed using northern blot analysis.
Main Results:
- No morphological or proliferative changes were observed in C6 cells treated with AA.
- AA treatment led to a transient upregulation of myelin-specific genes (PLP and MAG).
- The upregulation of PLP and MAG mRNA levels was dose-dependent and reached maximum levels at 3 days post-treatment.
Conclusions:
- Ascorbic acid at physiological concentrations does not affect glioma cell growth or appearance.
- Ascorbic acid may play a regulatory role in myelin gene activity within the CNS.
- These findings suggest a potential link between vitamin C and myelin maintenance or repair processes.