Cloning and expression of guanylin from the European eel (Anguilla anguilla).

M Comrie, Christopher Paul Cutler, Gordon Cramb

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Extracts of intestinal epithelia from the European eel (Anguilla anguilla) stimulated cGMP production in the T84 human colon carcinoma cell line which suggested the presence of a guanylin-like peptide in this teleost fish. Degenerate oligonucleotide primers were subsequently used in RT-PCR resulting in the amplification, cloning, and sequencing of two cDNAs which represent possible 5' spliceoforms of an eel homologue of the mammalian peptide, guanylin. Northern blotting indicated that the main site of expression of the eel peptide is in the intestine with much lower signals also detected in the kidney. Intestinal expression of guanylin mRNA is up-regulated in both nonmigratory "yellow" and the more sexually mature, migratory "silver" eels following acclimation to the seawater environment. These results suggest that this peptide signalling system may play a role in osmoregulation in euryhaline teleost fish during migration between the marine and freshwater environments. (C) 2001 Academic Press.

Original languageEnglish
Pages (from-to)1078-1085
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume281
Publication statusPublished - 16 Mar 2001

Keywords

  • guanylin
  • mRNA expression
  • European eel
  • Anguilla anguilla
  • CYCLIC-GMP
  • NATRIURETIC PEPTIDES
  • MECHANISMS
  • INTESTINE
  • SECRETION
  • SEQUENCE
  • PROTEIN
  • ATRIAL
  • GENE

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