Cited by 581Developmental Biology and Gene RegulationLiver physiology and pathologyCongenital heart defects research

The initiation of liver development is dependent on Foxa transcription factors

Lee, Catherine S., Friedman, Joshua R., Fulmer, James T., Kaestner, Klaus H.·2005·Nature

Abstract

The specification of the vertebrate liver is thought to occur in a two-step process, beginning with the establishment of competence within the foregut endoderm for responding to organ-specific signals, followed by the induction of liver-specific genes. On the basis of expression and in vitro studies, it has been proposed that the Foxa transcription factors establish competence by opening compacted chromatin structures within liver-specific target genes. Here we show that Foxa1 and Foxa2 (forkhead box proteins A1 and A2) are required in concert for hepatic specification in mouse. In embryos deficient for both genes in the foregut endoderm, no liver bud is evident and expression of the hepatoblast marker alpha-fetoprotein (Afp) is lost. Furthermore, Foxa1/Foxa2-deficient endoderm cultured in the presence of exogenous fibroblast growth factor 2 (FGF2) fails to initiate expression of the liver markers albumin and transthyretin. Thus, Foxa1 and Foxa2 are required for the establishment of competence within the foregut endoderm and the onset of hepatogenesis.

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Crossref · 10.1038/nature03649

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Authors
Lee, C. S., Friedman, J. R., Fulmer, J. T., & Kaestner, K. H.
Affiliations
University of Pennsylvania (US)
Corresponding author
Kaestner, Klaus H.
Venue
Nature
Published
2005-06
Volume
435
Issue
7044
Pages
944-947
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1994942890
Cited by
581
References
2
Citations by year
2026: 14 · 2025: 23 · 2024: 24 · 2023: 28 · 2022: 24 · 2021: 35 · 2020: 29 · 2019: 24 · 2018: 30 · 2017: 23 · 2016: 35 · 2015: 35 · 2014: 26 · 2013: 33 · 2012: 22
FWCI
9.79
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
FOXA1, FOXA2, forkhead transcription factor, liver development, hepatogenesis, foregut endoderm, alpha-fetoprotein, albumin, prealbumin, fibroblast growth factor 2, chromatin condensation, organogenesis, mouse embryo
MeSH terms
Animals, DNA-Binding Proteins, Liver, Nuclear Proteins, RNA, Messenger, Transcription Factors, Fibroblast Growth Factor 2, Gene Deletion, Gene Expression Regulation, Developmental, Mice, Hepatocyte Nuclear Factor 3-alpha, Hepatocyte Nuclear Factor 3-beta, Hepatocyte Nuclear Factor 3-gamma

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