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- W2016049872 abstract "The Ca2+-modulated protein of the EF-hand type, S100B, was shown to inhibit rat L6 myoblast differentiation and myotube formation by interacting with a high affinity with an unidentified receptor (Sorci et al., 2003). We show here that S100B independently inhibits the MKK6-p38 MAPK pathway and stimulates the Ras-MEK-ERK1/2 pathway. The inhibitory effect of S100B on p38 MAPK translates into a defective induction of the muscle-specific transcription factor myogenin and the antiproliferative factor p21(WAF1), while S100B's stimulatory effect on ERK1/2 results in stimulation of myoblast proliferation via cyclin D1 induction and Rb phosphorylation and protection against apoptosis via activation of NF-kappaB transcriptional activity. Also, the S100B's effects that are mediated by the Ras-MEK-ERK1/2 pathway that is, stimulation of proliferation and protection against apoptosis, depend on reactive oxygen species production, being inhibited by antioxidants, while the S100B inhibitory effect on the MKK6-p38 MAPK pathway is not. We propose that S100B might participate in the regulation of myoblast differentiation by stimulating myoblast proliferation, protecting myoblasts against apoptosis, and modulating myotube formation." @default.
- W2016049872 created "2016-06-24" @default.
- W2016049872 creator A5016331365 @default.
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- W2016049872 date "2006-01-17" @default.
- W2016049872 modified "2023-10-10" @default.
- W2016049872 title "S100B stimulates myoblast proliferation and inhibits myoblast differentiation by independently stimulating ERK1/2 and inhibiting p38 MAPK" @default.
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- W2016049872 doi "https://doi.org/10.1002/jcp.20580" @default.
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