Molecular basis of polycystic kidney disease: PKD1, PKD2 and PKHD1

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Recent developments have helped elucidate the function of the autosomal dominant polycystic kidney disease proteins, polycystin-1 and polycystin-2, and have revealed the primary defect in autosomal recessive polycystic kidney disease, by positional cloning of the gene, PKHD1. Several studies demonstrating that polycystin-2 can act as a calcium-ion-permeable cation channel, and that polycystin-1 may be involved in regulating/localizing this channel, have provided compelling evidence of the function of these proteins. A role in regulating intracellular calcium levels seems likely, with the many cellular abnormalities associated with cystogenesis due to a disruption of calcium homeostasis. Improved mutation analysis in autosomal dominant polycystic kidney disease has led to the finding of genotype/phenotype correlations which could be related to possible cleavage of polycystin-1. A major recent breakthrough has revealed the primary defect in autosomal recessive polycystic kidney disease. Genetic analysis showed that the PCK rat model is orthologous to autosomal recessive polycystic kidney disease, and allowed the human gene, PKHD1, to be precisely localized and identified. PKHD1 is a large gene, encoding a protein, fibrocystin, of 4074 amino acids, which is predicted to have a large extracellular region, a single transmembrane domain and a short cytoplasmic tail. Fibrocystin may act as a receptor with critical roles in collecting-duct and biliary development.

Original languageEnglish (US)
Pages (from-to)309-314
Number of pages6
JournalCurrent Opinion in Nephrology and Hypertension
Volume11
Issue number3
DOIs
StatePublished - 2002

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Autosomal Recessive Polycystic Kidney
Polycystic Kidney Diseases
Autosomal Dominant Polycystic Kidney
Calcium
Genes
Proteins
Genetic Association Studies
Cations
Tail
Organism Cloning
Homeostasis
Ions
Amino Acids
Mutation
polycystic kidney disease 1 protein
polycystic kidney disease 2 protein

ASJC Scopus subject areas

  • Internal Medicine
  • Nephrology

Cite this

Molecular basis of polycystic kidney disease : PKD1, PKD2 and PKHD1. / Harris, Peter C.

In: Current Opinion in Nephrology and Hypertension, Vol. 11, No. 3, 2002, p. 309-314.

Research output: Contribution to journalArticle

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