Role of WNK kinases in blood pressure control

Sung Sen Yang, Shih Hua Lin, Chou Long Huang

Research output: Contribution to journalArticle

Abstract

With-No-Lysine [K] (WNK) kinases are a group of serine/threonine protein kinases with an unusual location of the catalytic lysine. There are four mammalian WNK kinases, WNK1-4, each encoded by a separate gene. In addition, WNK1 has two alternatively spliced isoforms: a ubiquitously expressed full-length long isoform (L-WNK1) with kinase activity and a kidney-specific isoform (KS-WNK1) lacking kinase activity. Mutations of WNK1 and WNK4 genes cause a genetic hypertension syndrome, pseudohypoaldosteronism type 2 (PHA2). Recent studies show that WNK1, 3 and 4 are expressed in the aldosterone-sensitive distal tubules of kidney and contribute to sodium (Na+) and potassium (K+) homeostasis by regulating tubular Na+ and K- transporters in complex manners. Mice with heterozygous disruption of WNK1 gene have hypotension but without apparent renal Na- wasting. L-WNK1 is also expressed in heart and blood vessel. Thus, function of WNK1 in cardiovascular system may also contribute to blood pressure regulation. Transgenic or knockin mice carrying a disease-causing WNK4 gene exhibit typical phenotypes of PHA2 by increasing renal Na- reabsorption. The review summarizes recent studies on the mechanism of WNK/kinases regulation of Na+ homeostasis and cardiovascular function and the role in blood pressure control.

Original languageEnglish (US)
Pages (from-to)161-166
Number of pages6
JournalCurrent Hypertension Reviews
Volume4
Issue number3
DOIs
StatePublished - 2008

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Phosphotransferases
Blood Pressure
Pseudohypoaldosteronism
Protein Isoforms
Genes
Lysine
Homeostasis
Distal Kidney Tubule
Kidney
Protein-Serine-Threonine Kinases
Cardiovascular System
Aldosterone
Hypotension
Blood Vessels
Potassium
Sodium
Hypertension
Phenotype
Mutation

Keywords

  • Blood pressure
  • Ion homeostasis
  • Pseudohypoaldosteronism type 2 (PHA2)
  • WNK kinase

ASJC Scopus subject areas

  • Internal Medicine

Cite this

Role of WNK kinases in blood pressure control. / Yang, Sung Sen; Lin, Shih Hua; Huang, Chou Long.

In: Current Hypertension Reviews, Vol. 4, No. 3, 2008, p. 161-166.

Research output: Contribution to journalArticle

Yang, Sung Sen ; Lin, Shih Hua ; Huang, Chou Long. / Role of WNK kinases in blood pressure control. In: Current Hypertension Reviews. 2008 ; Vol. 4, No. 3. pp. 161-166.
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