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PMID |
Sentence |
1 |
17457565
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The population of pancreatic endodermal cells that produced PDX1 was significantly increased at the expense of ectodermal differentiation, and a subset of the PDX1-positive cells also produced FOXA2, caudal-type homeobox transcription factor 2 (CDX2), and nestin (NES).
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2 |
21385937
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Further study showed that FoxA2 was involved in regulation of FoxO1 and PDX-1 expression in DEX-induced pancreatic ?-cells dysfunction.
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3 |
21385937
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Moreover, we found that DEX increased the activity of FoxA2 binding to the FoxO1 promoter but decreased the activity of FoxA2 binding to the PDX-1 promoter of RINm5F cells.
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4 |
21385937
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Knockdown of FoxA2 by RNA interference inhibited FoxO1 expression and restored PDX-1 expression in pancreatic ?-cells treated with DEX.
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5 |
12124776
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We explored the sequence of activation of certain transcription factors known to be essential for the beta cell phenotype: PDX-1, Beta2/NeuroD, and hepatocyte nuclear factor 3beta (HNF3beta).
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6 |
12124776
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EMSA results indicated that EX-4 caused a 12-fold increase in HNF3beta binding to PDX-1 promoter area II.
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7 |
12145169
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Prior in vitro analysis has suggested that the forkhead/winged helix transcription factor Foxa2 (formerly HNF-3beta) is a major upstream regulator of Pdx1, a homeobox gene essential for pancreatic development.
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8 |
12145169
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We demonstrated that the deletion of Foxa2 in beta-cell-specific knockout mice results in downregulation of Pdx1 mRNA and subsequent reduction of PDX-1 protein levels in islets.
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9 |
12145169
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These data represent the first in vivo demonstration that Foxa2 acts upstream of Pdx1 in the differentiated beta-cell.
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10 |
12869553
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We have also demonstrated the expression of upstream genes of Pdx-1, such as HNF3beta and HNF1alpha, as well as its downstream genes, including insulin, Glut2, and Nkx6.1, to be well preserved.
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11 |
15585742
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RT-PCR analysis showed that Pdx1-positive cells from day 8 cultures expressed the early endoderm markers Ptf1a, Foxa2, Hnf4alpha, Hnf1beta, and Hnf6, consistent with the notion that they corresponded to the early pancreatic endoderm present in the embryonic day 9.5 mouse embryo.
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12 |
15631623
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An additional winged-helix protein, Foxo1, contributes to pancreatic beta-cell function by regulating the Pdx1 gene, which is required for pancreatic development in cooperation with Foxa2.
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