Renal phosphate transporters

Research output: Contribution to journalReview article

12 Scopus citations

Abstract

PURPOSE OF REVIEW: Phosphate homeostasis is tightly controlled by the coordinated activity of bone, kidney, intestine, and parathyroid gland. The renal phosphate transporters have emerged as key regulators of both total body phosphate homeostasis and serum phosphate concentration. This review focuses on the latest updates in phosphate transport and transporters with an emphasis on renal phosphate transporters. RECENT FINDINGS: Structure function analysis of type II sodium phosphate cotransporters has revealed motifs with significant similarity to those seen in other sodium-coupled solute transporters, identifying key amino acid residues important for solute binding and transport. Previously unidentified regulators of these transporters have been found, although their physiologic significance and interaction with more traditional regulators have not been established. Type II and type III sodium phosphate cotransporters play critical roles in bone, choroid plexus, and vascular physiology and pathophysiology. SUMMARY: Increasing knowledge of structure function relationships for sodium phosphate cotransporters, as well as greater appreciation for the complexity of their regulation and role in renal and nonrenal tissue, brings the promise of newer, more specific treatments for disorders of phosphate homeostasis. VIDEO ABSTRACT:

Original languageEnglish (US)
Pages (from-to)502-506
Number of pages5
JournalCurrent opinion in nephrology and hypertension
Volume23
Issue number5
DOIs
StatePublished - Sep 2014
Externally publishedYes

Keywords

  • epithelial transport
  • membrane trafficking
  • PDZ domain
  • phosphate homeostasis
  • sodium phosphate cotransporter
  • vascular calcification

ASJC Scopus subject areas

  • Internal Medicine
  • Nephrology

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