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PMID |
Sentence |
1 |
11289043
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Finally, we demonstrated that the receptor for GLP-1 is constitutively expressed by ARIP and PANC-1 cells and that the mRNA level for this transcript was increased by cellular transfection with human IDX-1.
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2 |
11961501
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Further-more, GLP-1 upregulates expression of b-cell genes (GLUT2, glucokinase, insulin, and PDX-1) and promotes b-cell neogenesis and differentiation of ductal cells into insulin secreting cells.
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3 |
15044356
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GLP-1 receptor activation enhances beta-cell proliferation and promotes islet neogenesis via activation of pdx-1 expression.
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4 |
16968152
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GLP-1 has been shown to be involved in stimulating the signaling pathways downstream of the transcription factor PDX-1, by increasing its protein and messenger RNA levels.
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5 |
16968152
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We concluded that GLP-1 induced differentiation of nestin-positive progenitor embryonic stem cells into insulin-producing cells, which was achieved by upregulation of PDX-1 expression.
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6 |
21093089
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The expression of PDX-1, a downstream mediator of GLP-1 action, was increased in islets of STZ-DA mice compared to STZ-NC mice.
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7 |
10499550
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We investigated the possibility that GLP-1 may be having its long-term pleiotropic effects through a hitherto unknown regulation of PDX-1.
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8 |
10499550
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The results of electrophoretic mobility shift experiments showed that PDX-1 protein binding to the Al element of the rat insulin II promoter was also increased 2 h post treatment with GLP-1.
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9 |
10905482
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Thus, in addition to stimulating insulin secretion, GLP-1 stimulates the expression of the transcription factor IDX-1 while stimulating beta-cell neogenesis and may thereby be an effective treatment for diabetes.
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10 |
11237222
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PDX-1, a transcriptional factor activator of these three genes, also is upregulated in the insulinoma cell line in aged rats and diabetic mice following treatment with GLP-1.
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11 |
11316746
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In addition, GLP-1 has been shown, both in vitro and in vivo, to be involved in regulation of the transcription factor, pancreatic duodenal homeobox-1 protein (PDX-1), by increasing its total protein levels, its translocation to the nucleus and its binding and resultant increase in activity of the insulin gene promoter in beta-cells of the pancreas.
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12 |
11316746
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Three separate inhibitors of PKA, and a cAMP antagonist, inhibited the effects of GLP-1 on PDX-1.
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13 |
11316746
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Furthermore, forskolin, (which stimulates adenylyl cyclase and insulin secretion), and 8-Bromo-cAMP, (an analog of cAMP which also stimulates insulin secretion), mimicked the effects of GLP-1 on PDX-1.
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14 |
21779870
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Exendin-4 (Ex-4), a long-acting glucagon-like peptide-1 (GLP-1) analogue, given in the newborn period increases Pdx1 expression and prevents the development of diabetes in the IUGR rat.
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