Title |
Requirement for Pdx1 in specification of latent endocrine progenitors in zebrafish
|
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Published in |
BMC Biology, October 2011
|
DOI | 10.1186/1741-7007-9-75 |
Pubmed ID | |
Authors |
Robin A Kimmel, Lucas Onder, Armin Wilfinger, Elin Ellertsdottir, Dirk Meyer |
Abstract |
Insulin-producing beta cells emerge during pancreas development in two sequential waves. Recently described later-forming beta cells in zebrafish show high similarity to second wave mammalian beta cells in developmental capacity. Loss-of-function studies in mouse and zebrafish demonstrated that the homeobox transcription factors Pdx1 and Hb9 are both critical for pancreas and beta cell development and discrete stage-specific requirements for these genes have been uncovered. Previously, exocrine and endocrine cell recovery was shown to follow loss of pdx1 in zebrafish, but the progenitor cells and molecular mechanisms responsible have not been clearly defined. In addition, interactions of pdx1 and hb9 in beta cell formation have not been addressed. |
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