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FGF2 — MYOG
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Layne et al., Exp Cell Res 1999
:
Tumor necrosis factor-alpha and
basic fibroblast growth factor differentially
inhibit the insulin-like growth factor-I induced expression of
myogenin in C2C12 myoblasts ... These results indicate that both TNF-alpha and
bFGF inhibit
myogenin expression but differentially influence myoblast proliferation
Fuentealba et al., J Biol Chem 1999
:
Reduced expression of syndecan-3 resulted in a 13-fold decrease in sensitivity to
FGF-2 dependent inhibition of
myogenin expression
Tortorella et al., J Biol Chem 2001
:
However, these factors have opposing roles with respect to differentiation ; insulin-like growth factor-1 enhances muscle cell differentiation, whereas
bFGF inhibits the expression of the muscle-specific transcription factors MyoD and
myogenin
Li et al., Cell 1992
:
A
myogenin mutant lacking the PKC phosphorylation site is not
repressed by
FGF , confirming this site as a molecular target for FGF dependent repression of muscle transcription
Magri et al., Adv Exp Med Biol 1991
:
All of these agents affect the expression of
myogenin , one of the recently discovered family of myogenesis controlling genes, and TGF-beta and
FGF inhibit the expression of MyoD1 as well
LarraĆn et al., J Biol Chem 1998
:
Analysis of the induction of a myogenin promoter-driven reporter revealed that syndecan-1 expression resulted in a 6-7-fold increase in sensitivity to
bFGF dependent inhibition of
myogenin expression