β-Cell-specific inactivation of the mouseIpf1/Pdx1 gene results in loss of the β-cell phenotype and maturity onset diabetes
U Ahlgren, J Jonsson, L Jonsson, K Simu… - Genes & …, 1998 - genesdev.cshlp.org
U Ahlgren, J Jonsson, L Jonsson, K Simu, H Edlund
Genes & development, 1998•genesdev.cshlp.orgTo study the late β-cell-specific function of the homeodomain protein IPF1/PDX1 we have
generated mice in which the Ipf1/Pdx1 gene has been disrupted specifically in β cells. These
mice develop diabetes with age, and we show that IPF1/PDX1 is required for maintaining
the β cell identity by positively regulating insulin and islet amyloid polypeptide expression
and by repressing glucagon expression. We also provide evidence that IPF1/PDX1
regulates the expression of Glut2 in a dosage-dependent manner suggesting that lowered …
generated mice in which the Ipf1/Pdx1 gene has been disrupted specifically in β cells. These
mice develop diabetes with age, and we show that IPF1/PDX1 is required for maintaining
the β cell identity by positively regulating insulin and islet amyloid polypeptide expression
and by repressing glucagon expression. We also provide evidence that IPF1/PDX1
regulates the expression of Glut2 in a dosage-dependent manner suggesting that lowered …
To study the late β-cell-specific function of the homeodomain protein IPF1/PDX1 we have generated mice in which theIpf1/Pdx1 gene has been disrupted specifically in β cells. These mice develop diabetes with age, and we show that IPF1/PDX1 is required for maintaining the β cell identity by positively regulating insulin and islet amyloid polypeptide expression and by repressing glucagon expression. We also provide evidence that IPF1/PDX1 regulates the expression of Glut2 in a dosage-dependent manner suggesting that lowered IPF1/PDX1 activity may contribute to the development of type II diabetes by causing impaired expression of both Glut2 and insulin.
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