Resident hepatocyte fibroblast growth factor receptor 4 limits hepatocarcinogenesis

Xinqiang Huang, Chaofeng Yang, Chengliu Jin, Yongde Luo, Fen Wang, Wallace L. McKeehan

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Fibroblast growth factor (FGF) family signaling mediates cell-to-cell communication in development and organ homeostasis in adults. Of the FGF receptor (FGFR) isotypes, FGFR4 is the sole resident isotype present in mature parenchymal hepatocytes. FGFR1 that is normally associated with activated nonparenchymal cells appears ectopically in hepatoma cells. Ectopic expression and chronic activity of FGFR1 in hepatocytes accelerates diethylnitrosamine (DEN)-initiated hepatocarcinogenesis by driving unrestrained cell proliferation and tumor angiogenesis. Hepatocyte FGFR4 mediates liver's role in systemic cholesterol/bile acid and lipid metabolism and affects proper hepatolobular restoration after damage without effect on cell proliferation. Here we ask whether FGFR4 plays a role in progression of hepatocellular carcinoma (HCC). We report that although spontaneous HCC was not detected in livers of FGFR4-deficient mice, the ablation of FGFR4 accelerated DEN-induced hepatocarcinogenesis. In contrast to FGFR1 that induced a strong mitogenic response and depressed rate of cell death in hepatoma cells, FGFR4 failed to induce a mitogenic response and increased the rate of cell death. FGFR1 but not FGFR4 induced cyclin D1 and repressed p27 expression. Analysis of activation of Erk, JNK, and PI3K-related AKT signaling pathways indicated that in contrast to FGFR1, FGFR4 failed to sustain Erk activation and did not activate AKT. These differences may underlie the opposing effects of FGFR1 and FGFR4. These results suggest that in contrast to ectopic FGFR1 that is a strong promoter of hepatoma, resident FGFR4 that mediates differentiated hepatocyte metabolic functions also serves to suppress hepatoma progression.

Original languageEnglish (US)
Pages (from-to)553-562
Number of pages10
JournalMolecular Carcinogenesis
Volume48
Issue number6
DOIs
StatePublished - Jun 1 2009
Externally publishedYes

Fingerprint

Receptor, Fibroblast Growth Factor, Type 4
Proto-Oncogene Proteins c-met
Hepatocellular Carcinoma
Hepatocytes
Diethylnitrosamine
Cell Death
Cell Proliferation
Activation Analysis
Fibroblast Growth Factor Receptors
Fibroblast Growth Factors
Liver
Cyclin D1
Bile Acids and Salts
Phosphatidylinositol 3-Kinases
Lipid Metabolism
Cell Communication
Homeostasis
Cholesterol

Keywords

  • Cholesterol metabolism
  • FGF
  • Hepatocellular carcinoma
  • Liver adenoma
  • Metabolism
  • Tyrosine kinase signaling

ASJC Scopus subject areas

  • Molecular Biology
  • Cancer Research

Cite this

Resident hepatocyte fibroblast growth factor receptor 4 limits hepatocarcinogenesis. / Huang, Xinqiang; Yang, Chaofeng; Jin, Chengliu; Luo, Yongde; Wang, Fen; McKeehan, Wallace L.

In: Molecular Carcinogenesis, Vol. 48, No. 6, 01.06.2009, p. 553-562.

Research output: Contribution to journalArticle

Huang, Xinqiang ; Yang, Chaofeng ; Jin, Chengliu ; Luo, Yongde ; Wang, Fen ; McKeehan, Wallace L. / Resident hepatocyte fibroblast growth factor receptor 4 limits hepatocarcinogenesis. In: Molecular Carcinogenesis. 2009 ; Vol. 48, No. 6. pp. 553-562.
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