Genomic and expression analysis of canine calcitonin receptor-stimulating peptides and calcitonin/calcitonin gene-related peptide

Tsukasa Osaki, Takeshi Katafuchi, Naoto Minamino

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Calcitonin receptor-stimulating peptides (CRSPs) are new members of the calcitonin/calcitonin gene-related peptide (CT/CGRP) family identified in pigs, dogs and other domestic animals, and CRSP-1 is an active ligand for the CT receptor (CT-R). We recently sequenced porcine CRSP genes (Crsps) and found similarity with the CT/CGRP gene (Ct/Cgrp) in sequence and genomic organization. In this study, we identified five Crsps, Crsp-1 to Crsp-5, in dogs. Crsp-1 has five exons with an exon-intron organization identical to that of porcine Crsp-1 or Crsp-2, while Crsp-2 and Crsp-3 have additional CT-2- and CT-3-coding exons like Ct/Cgrp. Crsp-2 was renamed as Ct-2/Crsp-2 because both CRSP-2 and CT-2 mRNAs were tissue-specifically expressed. Crsp-4 and Crsp-5 are presumably generated by retrotransposition. We postulate that Crsps were generated from the gene duplication of Ct/Cgrp, and gained their diversity during mammalian evolution. Among the canine CTs and CRSPs, CRSP-1, CT-1 and CT-2 are active ligands for the CT-R, but CRSP-2 and others are inactive. Canine CRSP-1 and CT-2 are expressed in the central and peripheral systems, while CT-1 is localized in the thyroid gland. These findings indicate that dogs can be used for an experimental model as analysing the physiological roles of the CT/CGRP/CRSP family.

Original languageEnglish (US)
Pages (from-to)419-430
Number of pages12
JournalJournal of Biochemistry
Volume144
Issue number4
DOIs
StatePublished - Oct 2008

Fingerprint

Calcitonin Receptors
Calcitonin Gene-Related Peptide
Calcitonin
Canidae
Peptides
Genes
Exons
Swine
Dogs
Calcitonin Gene-Related Peptide Receptors
Ligands
Gene Duplication
Peptide Receptors
Domestic Animals
Introns
Thyroid Gland
Animals
Theoretical Models
Tissue

Keywords

  • Calcitonin
  • Calcitonin gene-related peptide
  • Calcitonin receptor
  • Calcitonin receptor-stimulating peptide
  • Genomic organization

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology

Cite this

Genomic and expression analysis of canine calcitonin receptor-stimulating peptides and calcitonin/calcitonin gene-related peptide. / Osaki, Tsukasa; Katafuchi, Takeshi; Minamino, Naoto.

In: Journal of Biochemistry, Vol. 144, No. 4, 10.2008, p. 419-430.

Research output: Contribution to journalArticle

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AB - Calcitonin receptor-stimulating peptides (CRSPs) are new members of the calcitonin/calcitonin gene-related peptide (CT/CGRP) family identified in pigs, dogs and other domestic animals, and CRSP-1 is an active ligand for the CT receptor (CT-R). We recently sequenced porcine CRSP genes (Crsps) and found similarity with the CT/CGRP gene (Ct/Cgrp) in sequence and genomic organization. In this study, we identified five Crsps, Crsp-1 to Crsp-5, in dogs. Crsp-1 has five exons with an exon-intron organization identical to that of porcine Crsp-1 or Crsp-2, while Crsp-2 and Crsp-3 have additional CT-2- and CT-3-coding exons like Ct/Cgrp. Crsp-2 was renamed as Ct-2/Crsp-2 because both CRSP-2 and CT-2 mRNAs were tissue-specifically expressed. Crsp-4 and Crsp-5 are presumably generated by retrotransposition. We postulate that Crsps were generated from the gene duplication of Ct/Cgrp, and gained their diversity during mammalian evolution. Among the canine CTs and CRSPs, CRSP-1, CT-1 and CT-2 are active ligands for the CT-R, but CRSP-2 and others are inactive. Canine CRSP-1 and CT-2 are expressed in the central and peripheral systems, while CT-1 is localized in the thyroid gland. These findings indicate that dogs can be used for an experimental model as analysing the physiological roles of the CT/CGRP/CRSP family.

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