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The effect of fibroblast growth factor on PC12 cells

A Togari, G Dickens, H Kuzuya and G Guroff
Journal of Neuroscience 1 February 1985, 5 (2) 307-316; DOI: https://doi.org/10.1523/JNEUROSCI.05-02-00307.1985
A Togari
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G Dickens
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H Kuzuya
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G Guroff
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Abstract

PC12 cells, which differentiate morphologically and biochemically into sympathetic neuron-like cells when treated with nerve growth factor, also respond to fibroblast growth factor. Some of the changes induced by fibroblast growth factor are similar to those seen after nerve growth factor treatment. Specifically, pituitary fibroblast growth factor causes the formation of processes initially comparable to those produced by nerve growth factor. However, in contrast to the outgrowth induced by nerve growth factor, which continues for several days, the outgrowth of processes induced by fibroblast growth factor ceases after about 3 days, even though fresh fibroblast growth factor is added. After about 6 days the processes induced by fibroblast growth factor have virtually disappeared. In this regard the processes induced by fibroblast growth factor are very similar to those induced by dibutyryl cyclic adenosine 3′:5′-monophosphate (dBcAMP). The addition of nerve growth factor and fibroblast growth factor together appears to produce a synergistic effect on process formation, as does the simultaneous addition of nerve growth factor and dBcAMP. Cells pretreated (or primed) with nerve growth factor are able to regenerate processes much more rapidly in the presence of nerve growth factor than cells which have not been pretreated. When fibroblast growth factor is added to cells primed with nerve growth factor, more rapid regeneration of processes also occurs. The regeneration of neurites in response to either factor is blocked by the addition of an inhibitor of methylation. The process formation induced by fibroblast growth factor is preceded, as is the outgrowth in response to nerve growth factor treatment, by an induction of ornithine decarboxylase, a decrease in the phosphorylation of a specific cytoplasmic protein, and an increase in the phosphorylation of a specific non-histone nuclear protein. The effects of fibroblast growth factor and of nerve growth factor on ornithine decarboxylase are additive. Fibroblast growth factor does not cause an increase in the activity of acetylcholinesterase; nerve growth factor does. Fibroblast growth factor does not appear to be acting through the nerve growth factor receptor. The binding of iodinated nerve growth factor to PC12 cells is specific and is not inhibited by the presence of fibroblast growth factor. In addition, anti-nerve growth factor serum does not interfere with the action of fibroblast growth factor.(ABSTRACT TRUNCATED AT 400 WORDS)

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The Journal of Neuroscience: 5 (2)
Journal of Neuroscience
Vol. 5, Issue 2
1 Feb 1985
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The effect of fibroblast growth factor on PC12 cells
A Togari, G Dickens, H Kuzuya, G Guroff
Journal of Neuroscience 1 February 1985, 5 (2) 307-316; DOI: 10.1523/JNEUROSCI.05-02-00307.1985

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The effect of fibroblast growth factor on PC12 cells
A Togari, G Dickens, H Kuzuya, G Guroff
Journal of Neuroscience 1 February 1985, 5 (2) 307-316; DOI: 10.1523/JNEUROSCI.05-02-00307.1985
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