Expression of glial fibrillary acidic protein in rat C6 glioma relates to vimentin and is independent of cell-cell contact.

Abstract

Glial fibrillary acidic protein (GFAP) was induced in rat C6 glioma cells grown in M199 and HAM F10 media by addition of 1 mM dibutyryl cyclic AMP. The amount of GFAP per cell increased 7- and 33-fold in M199 and HAM F10 media, respectively. GFAP could be induced in each phase of the cell culture except for the lag phase, where GFAP synthesis was delayed until the onset of the logarithmic growth. The induction took place under conditions where the total protein content of the cell decreased. Measurement of the amount of vimentin indicated that GFAP was induced under conditions of low vimentin concentration. Our results do not support the hypothesis that GFAP induction depends on cell-cell contact or cell proliferation. They indicate a shift from vimentin to GFAP synthesis by an as yet unknown mechanism.

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@article{Backhovens1987ExpressionOG, title={Expression of glial fibrillary acidic protein in rat C6 glioma relates to vimentin and is independent of cell-cell contact.}, author={Hubert Backhovens and Jan Gheuens and Herman Slegers}, journal={Journal of neurochemistry}, year={1987}, volume={49 2}, pages={348-54} }