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First published online October 26, 2007

Development 134, 2202e (2007)
© The Company of Biologists Limited
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In this issue

Two-way signals for pancreatic development


Figure 1

The pancreas, a gland that secretes digestive juices into the stomach and insulin into the blood, develops from two endodermal buds. In mice embryos, fibroblast growth factors (FGFs) secreted by the pancreatic mesenchyme control the development of these buds, but how does the pancreatic mesenchyme form? Manfroid and colleagues now show that, in zebrafish embryos, reciprocal endoderm-mesoderm interactions mediated by FGFs control pancreas development (see p. 4011). The researchers identify an area next to the ventral pancreatic bud - the pancreatic lateral plate mesoderm (LPM) - that corresponds to the pancreatic mesenchyme in mice and that is essential for ventral bud development. They show for the first time that transient expression of fgf24 in the endodermal precursor of the ventral bud patterns the pancreatic LPM and report that subsequent expression of fgf10 and fgf24 by the pancreatic LPM controls the specification and growth of the ventral pancreas. Thus, they conclude, sequential signalling between the endoderm and mesoderm drives pancreas development in zebrafish.


Related articles in Development:

Reciprocal endoderm-mesoderm interactions mediated by fgf24 and fgf10 govern pancreas development
Isabelle Manfroid, François Delporte, Ariane Baudhuin, Patrick Motte, Carl J. Neumann, Marianne L. Voz, Joseph A. Martial, and Bernard Peers
Development 2007 134: 4011-4021. [Abstract] [Full Text]  




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