Spatially restricted expression of fibroblast growth factor receptor-2 during Xenopus development

Development. 1992 Dec;116(4):1051-8. doi: 10.1242/dev.116.4.1051.

Abstract

The fibroblast growth factors (FGFs) play a role in Xenopus laevis embryonic development, particularly in the induction of ventral-type mesoderm. We have isolated a full-length cDNA from Xenopus that we have designated Xenopus fibroblast growth factor receptor-2 (XFGFR-2), with significant amino acid sequence similarity to the previously described bek gene (FGFR-2). We expressed the XFGFR-2 cDNA in COS1 cells and showed that it functions as an FGF receptor by binding radiolabeled FGF-2. RNA gel blot analysis demonstrates that unlike Xenopus fibroblast growth factor receptor-1 (XFGFR-1), XFGFR-2 mRNA expression begins during gastrulation and continues through early tadpole stages. Whole-mount in situ hybridization demonstrates that XFGFR-2 mRNA is localized to the anterior neural plate in early neurula stage embryos. Later in development, XFGFR-2 expression is found in the eye anlagen, midbrain-hindbrain boundary and the otic vesicle. In addition, XFGFR-2 transcripts are expressed in animal caps in a manner that is independent of mesoderm-inducing factors. These results indicate that XFGFR-2 may have a role in development that is distinct from that of XFGFR-1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Fibroblast Growth Factor 1 / genetics
  • Fibroblast Growth Factor 2 / genetics*
  • Gene Expression / physiology*
  • In Situ Hybridization
  • Mesoderm / physiology*
  • Molecular Sequence Data
  • Nervous System / embryology*
  • Receptors, Fibroblast Growth Factor / genetics*
  • Sequence Alignment
  • Xenopus

Substances

  • Receptors, Fibroblast Growth Factor
  • Fibroblast Growth Factor 2
  • Fibroblast Growth Factor 1

Associated data

  • GENBANK/L12697
  • GENBANK/L12698
  • GENBANK/L12699
  • GENBANK/L12700
  • GENBANK/L12701
  • GENBANK/L12702
  • GENBANK/L12703
  • GENBANK/X65943
  • GENBANK/X68446
  • GENBANK/X68447