Expression and localisation of stanniocalcin 1 in rat bladder, kidney and ovary

Rebecca A. Worthington, Louise Brown, Derek Jellinek, Andy C M Chang, Roger R. Reddel, Brett D. Hambly, Julian A. Barden*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Bony fish use the glycoprotein hormone stanniocalcin (STC) to counteract hypercalcaemia. This is achieved through dual mechanisms involving gill calcium uptake inhibition and stimulation of renal inorganic phosphate reabsorption. Human STC (hSTC-1) shows considerable homology with both rat and mouse STC (mSTC) and their mRNA is expressed in a wide range of tissues. In fish, STC is produced by endocrine glands known as the corpuscles of Stannius but in mammals the widespread expression is suggestive of a paracrine rather than an endocrine role. In order to determine the distribution and structural characteristics of hSTC-1, the recombinant protein was expressed in bacteria, purified by metal-ion affinity chromatography, and a study was made of the likely epitopes for raising an antibody. This novel hSTC-1 antibody was used to test the purification protocol. Since the role of mammalian STC is largely unknown, the specific distribution of STC needed to be addressed. To test the specificity of the antibody, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS- PAGE)/Western blotting was undertaken in homogenised rat bladder, ovary and kidney.

Original languageEnglish
Pages (from-to)2071-2076
Number of pages6
JournalElectrophoresis
Volume20
Issue number10
DOIs
Publication statusPublished - Jul 1999
Externally publishedYes

Keywords

  • Antibody
  • Bladder
  • Kidney
  • Ovary
  • Stanniocalcin

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