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Organ patterning in the adult stage: The role of Wnt/β‐catenin signaling in liver zonation and beyond
Author(s) -
Gebhardt Rolf,
Hovhannisyan Amalya
Publication year - 2010
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/dvdy.22041
Subject(s) - wnt signaling pathway , biology , beta catenin , transcription factor , carcinogenesis , catenin , transcription (linguistics) , microbiology and biotechnology , hepatocellular carcinoma , liver regeneration , cancer research , signal transduction , bioinformatics , regeneration (biology) , genetics , gene , linguistics , philosophy
Wnt/β‐catenin signaling has been found to play key roles in metabolic zonation of adult liver, regeneration, and hepatocellular carcinogenesis. In this review, recent progress in this field is summarized, in particular the rapidly growing knowledge about the various interactions of β‐catenin with many transcription factors involved in controlling metabolism. These interactions may provide the basis for understanding how the wide range of activities of Wnt/β‐catenin signaling is differentially interpreted. Based on these results, a three‐level mode for the molecular interpretation of β‐catenin activity gradients in liver is proposed favoring cell differentiation, metabolic zonation, and proliferation. While derangement of the combinatorial interplay of the various transcription factors with β‐catenin at the intermediary activity level may contribute to the development of metabolic diseases, extremely high activation of β‐catenin may eventually lead to initiation and progression of hepatocellular tumors. Developmental Dynamics 239:45–55, 2010. © 2009 Wiley‐Liss, Inc.