Origin of the zebrafish endocrine and exocrine pancreas
Article first published online: 1 MAY 2007
Copyright © 2007 Wiley-Liss, Inc.
Special Issue: Special Focus on Segmentation
Volume 236, Issue 6, pages 1558–1569, June 2007
How to Cite
Ward, A. B., Warga, R. M. and Prince, V. E. (2007), Origin of the zebrafish endocrine and exocrine pancreas. Dev. Dyn., 236: 1558–1569. doi: 10.1002/dvdy.21168
- Issue published online: 16 MAY 2007
- Article first published online: 1 MAY 2007
- Manuscript Accepted: 26 MAR 2007
- National Institutes of Health. Grant Numbers: 1F32DK076514-01, DK-064973-01
- Juvenile Diabetes Research Foundation. Grant Number: 1-2003-257
- fate map;
- ventral pancreatic bud;
- dorsal pancreatic bud
Here, we report a detailed fate map of the zebrafish pancreas at the early gastrula stage of development (6 hours postfertilization; hpf). We show that, at this stage, both pancreas and liver progenitors are symmetrically localized in two broad domains relative to the dorsal organizer. We demonstrate that the dorsal and ventral pancreatic buds can derive from common progenitor pools at 6 hpf, but often derive from independent populations. Endocrine vs. exocrine pancreas show a similar pattern of progenitors, consistent with descriptions of the dorsal bud being strictly endocrine and the ventral bud primarily exocrine. In general, we find that endocrine/dorsal bud progenitors are located more dorsally than the exocrine pancreas/ventral bud progenitors. Later in gastrulation (10 hpf), pancreas progenitors have migrated to bilateral domains at the equator of the embryo. Our fate map will assist with design and interpretation of future experiments to understand early pancreas development. Developmental Dynamics 236:1558–1569, 2007. © 2007 Wiley-Liss, Inc.