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Spatiotemporal regulation of liver development by the Wnt/β-catenin pathway

Burke, Zoë D., Reed, Karen R. ORCID:, Yeh, Sheng-Wen, Meniel, Valerie, Sansom, Owen J., Clarke, Alan R. and Tosh, David 2018. Spatiotemporal regulation of liver development by the Wnt/β-catenin pathway. Scientific Reports 8 (1) 10.1038/s41598-018-20888-y

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While the Wnt/β-catenin pathway plays a critical role in the maintenance of the zonation of ammonia metabolizing enzymes in the adult liver, the mechanisms responsible for inducing zonation in the embryo are not well understood. Herein we address the spatiotemporal role of the Wnt/β-catenin pathway in the development of zonation in embryonic mouse liver by conditional deletion of Apc and β-catenin at different stages of mouse liver development. In normal development, the ammonia metabolising enzymes carbamoylphosphate synthetase I (CPSI) and Glutamine synthetase (GS) begin to be expressed in separate hepatoblasts from E13.5 and E15.5 respectively and gradually increase in number thereafter. Restriction of GS expression occurs at E18 and becomes increasingly limited to the terminal perivenous hepatocytes postnatally. Expression of nuclear β-catenin coincides with the restriction of GS expression to the terminal perivenous hepatocytes. Conditional loss of Apc resulted in the expression of nuclear β-catenin throughout the developing liver and increased number of cells expressing GS. Conversely, conditional loss of β-catenin resulted in loss of GS expression. These data suggest that the Wnt pathway is critical to the development of zonation as well as maintaining the zonation in the adult liver.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made
Publisher: Nature Publishing Group
ISSN: 2045-2322
Date of First Compliant Deposit: 1 November 2019
Date of Acceptance: 23 January 2018
Last Modified: 06 May 2023 05:14

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