Regulation of FGF receptor-2 expression by transcription factor E2F-1

Oncogene. 2003 Aug 28;22(36):5630-5. doi: 10.1038/sj.onc.1206636.

Abstract

Fibroblast growth factors (FGF) and their receptors play an important role in cell proliferation, angiogenesis and embryonal development. In this study, we show that expression of the FGF receptor-2 (FGFR-2) protein is induced in the mid-to-late G1 phase of the cell cycle in serum-starved mouse NIH3T3 cells released from starvation. Transcription of mouse FGFR-2 was activated by E2F-1. Analysis of various mouse FGFR-2 promoter mutant constructs showed that a sequence located +57/+64 downstream of the transcriptional initiation site, related to the consensus E2F-responsive sequence, is necessary for the activation. The promoter activity of the mouse FGFR-2 gene is also positively regulated by E2F-2 and E2F-3, but not by E2F-4 and E2F-5. Moreover, the E2F-1-induced activation of mouse FGFR-2 gene transcription is suppressed by pRB. Taken together, the results demonstrate that FGFR-2 is a new class of targets for E2F, and expression of mouse FGFR-2 in mid-to-late G1 phase would be mediated, at least in part, by the activation of a pRB/E2F pathway.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3T3 Cells
  • Animals
  • Cell Cycle Proteins*
  • DNA-Binding Proteins*
  • E2F Transcription Factors
  • E2F1 Transcription Factor
  • E2F3 Transcription Factor
  • E2F4 Transcription Factor
  • E2F5 Transcription Factor
  • Gene Expression Regulation*
  • Mice
  • Promoter Regions, Genetic
  • Receptor Protein-Tyrosine Kinases / genetics*
  • Receptor, Fibroblast Growth Factor, Type 2
  • Receptors, Fibroblast Growth Factor / genetics*
  • Retinoblastoma Protein / physiology
  • Transcription Factors / physiology*

Substances

  • Cell Cycle Proteins
  • DNA-Binding Proteins
  • E2F Transcription Factors
  • E2F1 Transcription Factor
  • E2F3 Transcription Factor
  • E2F4 Transcription Factor
  • E2F5 Transcription Factor
  • E2f1 protein, mouse
  • E2f4 protein, mouse
  • Receptors, Fibroblast Growth Factor
  • Retinoblastoma Protein
  • Transcription Factors
  • Fgfr2 protein, mouse
  • Receptor Protein-Tyrosine Kinases
  • Receptor, Fibroblast Growth Factor, Type 2