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PMID |
Sentence |
1 |
16954342
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Electrophoretic mobility shift assays and in vivo genomic footprinting demonstrated that insulin deficiency increased Sp1 binding to GC-rich elements in the UbC promoter.
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2 |
16954342
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Thus glucocorticoids increase UbC transcription by a mechanism involving Sp1 that is unique to muscle.
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3 |
20371624
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The PI3K/Akt pathway inhibits the FOXO-mediated transcription of the muscle-specific E3 ligase atrogin-1/MAFbx (AT-1), whereas the MEK/ERK pathway increases Sp1 activity and ubiquitin (UbC) expression.
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4 |
20371624
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We tested a signaling model in which FOXO3a mediates crosstalk between the PI3K/Akt and MEK/ERK pathways to coordinate AT-1 and UbC expression.
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5 |
20371624
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Knockdown of IRS-1 using small interfering RNA or adenovirus-mediated expression of constitutively activated FOXO3a increased IRS-2 protein, MEK/ERK signaling, and UbC expression.
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6 |
20371624
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IRS-1 and Akt phosphorylation were decreased, whereas MEK/ERK signaling and expression of IRS-2, UbC and AT-1 were increased.
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