Cited by 40Developmental Biology and Gene RegulationLiver physiology and pathologyFibroblast Growth Factor Research

FGF signaling is required for anterior but not posterior specification of the murine liver bud

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Wang, Jikui, Rhee, Siyeon, Palaria, Amrita, Tremblay, Kimberly D.·2015·Developmental Dynamics

Abstract

Background: The definitive endoderm arises as a naive epithelial sheet that produces the entire gut tube and associated organs including the liver, pancreas and lungs. Murine explant studies demonstrate that fibroblast growth factor (FGF) signaling from adjacent tissues is required to induce hepatic gene expression from isolated foregut endoderm. The requirement of FGF signaling during liver development is examined by means of small molecule inhibition during whole embryo culture. Results: Loss of FGF signaling before hepatic induction results in morphological defects and gene expression changes that are confined to the anterior liver bud. In contrast the posterior portion of the liver bud remains relatively unaffected. Because FGF is thought to act as a morphogen during endoderm organogenesis, the ventral pancreas was also examined after FGF inhibition. Although the size of the ventral pancreas is not affected, loss of FGF signaling results in a significantly higher density of ventral pancreas cells. Conclusions: The requirement for FGF‐mediated induction of hepatic gene expression differs across the anterior/posterior axis of the developing liver bud. These results underscore the importance of studying tissue differentiation in the context of the whole embryo. Developmental Dynamics 244:431–443, 2015. © 2014 Wiley Periodicals, Inc.

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  • FGF and BMP signaling have previously been shown to coordinate the specification of anterior and posterior hepatic endodermal populations, respectively.

    “while FGF and BMP signaling have previously been shown to coordinate the specification of anterior and posterior hepatic endodermal populations, respectively”

    From Single-Cell Transcriptomics Reveals Early Emergence of Liver Parenchymal and Non-parenchymal Cell Lineages (2020) · cites this paper as Wang et al., 2015

    The Discussion reports that reduced FGF signaling has severe effects on specification of the anterior liver bud but little effect on the posterior bud. It proposes BMP as a candidate signal for posterior induction and says studies are ongoing; it does not say BMP’s posterior role had previously been shown. The indexed passages provide no page numbers. (LLM, conf=0.90)

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Authors
Wang, J., Rhee, S., Palaria, A., & Tremblay, K. D.
Affiliations
University of Massachusetts Amherst (US)
Corresponding author
Tremblay, Kimberly D.
Venue
Developmental Dynamics
Publisher
Wiley
Published
2014-10-23
Volume
244
Issue
3
Pages
431-443
ISSN
  • 1058-8388 (ISSN-L)
  • 1097-0177
OpenAlex
W2153326882
Cited by
40
References
63
Citations by year
2026: 1 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 6 · 2017: 3 · 2016: 4 · 2015: 4
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • Developmental Dynamics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (R01DK87753)
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 › Fibroblast Growth Factor Research
Keywords
FGF signaling, anterior-posterior axis, definitive endoderm, foregut endoderm, ventral pancreas, whole embryo culture, small molecule inhibition, liver development, morphogens
MeSH terms
Animals, Endoderm, Fibroblast Growth Factors, Liver, Organ Specificity, Signal Transduction, Gene Expression Regulation, Developmental, Organogenesis, Mice

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