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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Up-regulation of fibroblast growth factor (FGF) receptor mRNA levels by basic FGF or testosterone in androgen-sensitive mouse mammary tumor cells.

Since we had previously shown that both basic fibroblast growth factor (bFGF) and testosterone stimulate the growth of mouse mammary carcinoma cells (SC-3) in serum-free culture, we tested the effect of bFGF or testosterone on FGF receptor mRNA levels. Northern blot analyses revealed that stimulation with bFGF resulted in a 5-fold increase in FGF receptor mRNA levels at 6-8 h followed by a decline to the unstimulated levels at 24 h. Simultaneous addition of cycloheximide blocked bFGF- induced accumulation of FGF receptor mRNA, although exposure of SC-3 cells to cycloheximide alone caused marginal increase in its basal level. Neither phorbol ester nor forskolin stimulated FGF receptor mRNA expression, but testosterone could raise FGF receptor mRNA levels. To obtain the maximum stimulation, however, testosterone required the longer stimulation period (12 h) than bFGF, suggesting that testosterone-induced FGF receptor mRNA accumulation is mediated through an induction of FGF-like growth factor.[1]

References

  1. Up-regulation of fibroblast growth factor (FGF) receptor mRNA levels by basic FGF or testosterone in androgen-sensitive mouse mammary tumor cells. Saito, H., Kasayama, S., Kouhara, H., Matsumoto, K., Sato, B. Biochem. Biophys. Res. Commun. (1991) [Pubmed]
 
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