Role of the Wilms' tumor suppressor gene Wt1 in pancreatic development

Ariza, L., Cañete, A., Rojas, A., Muñoz-Chápuli, R. and Carmona, R. (2018) Role of the Wilms' tumor suppressor gene Wt1 in pancreatic development. Developmental Dynamics, 247(7), pp. 924-933. (doi:10.1002/dvdy.24636) (PMID:29708625)

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The Wilms tumor suppressor gene (Wt1) encodes a transcription factor involved in the development of a number of organs, but the role played by Wt1 in pancreatic development is unknown. The pancreas contains a population of pancreatic stellate cells (PSC) very important for pancreatic physiology. We described elsewhere that hepatic stellate cells originate from the WT1‐expressing liver mesothelium. Thus, we checked if the origin of PSCs was similar. WT1 expression is restricted to the pancreatic mesothelium. Between embryonic day (E) 10.5 and E15.5, this mesothelium gives rise to mesenchymal cells that contribute to a major part of the PSC and other cell types including endothelial cells. Most WT1 systemic mutants show abnormal localization of the dorsal pancreas within the mesentery and intestinal malrotation by E14.0. Embryos with conditional deletion of WT1 between E9.5 and E12.5 showed normal dorsal pancreatic bud and intestine, but the number of acini in the ventral bud was reduced approximately 30% by E16.5. Proliferation of acinar cells was reduced in WT1 systemic mutants, but pancreatic differentiation was not impaired. Thus, mesothelial‐derived cells constitute an important subpopulation of pancreatic mesodermal cells. WT1 expression is not essential for pancreas development, although it influences intestinal rotation and correct localization of the dorsal pancreas within the mesogastrium.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Canete Sanchez, Mrs Ana Elodia
Authors: Ariza, L., Cañete, A., Rojas, A., Muñoz-Chápuli, R., and Carmona, R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cancer Sciences
Journal Name:Developmental Dynamics
ISSN (Online):1097-0177
Published Online:30 April 2018
Copyright Holders:Copyright © 2018 Wiley Periodicals, Inc.
First Published:First published in Developmental Dynamics 247(7): 924-933
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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