Role of guanine-nucleotide exchange factor Epac in renal physiology and pathophysiology

Shi Kun Yang, Li Xiao, Jun Li, Fuyou Liu, Lin Sun*, Yashpal S. Kanwar

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

5 Scopus citations

Abstract

Exchange proteins directly activated by cAMP [Epac(s)] were discovered more than a decade ago as new sensors for the second messenger cAMP. The Epac family members, including Epac1 and Epac2, are guanine nucleotide exchange factors for the Ras-like small GTPases Rap1 and Rap2, and they function independently of protein kinase A. Given the importance of cAMP in kidney homeostasis, several molecular and cellular studies using specific Epac agonists have analyzed the role and regulation of Epac proteins in renal physiology and pathophysiology. The specificity of the functions of Epac proteins may depend upon their expression and localization in the kidney as well as their abundance in the microcellular environment. This review discusses recent literature data concerning the involvement of Epac in renal tubular transport physiology and renal glomerular cells where various signaling pathways are known to be operative. In addition, the potential role of Epac in kidney disorders, such as diabetic kidney disease and ischemic kidney injury, is discussed.

Original languageEnglish (US)
Pages (from-to)F831-F839
JournalAmerican Journal of Physiology - Renal Physiology
Volume304
Issue number7
DOIs
StatePublished - 2013

Keywords

  • Exchange proteins directly activated by cadenosine 3'5'-cyclic monophosphate
  • Guanosine triphosphatases
  • Kidney
  • Rap1

ASJC Scopus subject areas

  • Physiology
  • Urology

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