Pharmacologic restoration of ΔF508 CFTR-mediated chloride current

Pamela L. Zeitlin

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Cystic fibrosis (CF) is an autosomal inherited disorder caused by over 800 different mutations in the CFTR gene. The most common mutation, ΔF508, causes a trafficking arrest in the endoplasmic reticulum and the CFTR protein is degraded. Restoration of CFTR trafficking in vitro restores cAMP-mediated chloride transport at the cell surface. The hypothesis of this discussion is that the short chain fatty acids, butyrate and 4-phenylbutyrate, up-regulate mature CFTR at the plasma membrane. Evidence that these compounds regulate CFTR production and maturation in part through effects on molecular chaperones in CF cells in culture is discussed. The oral drug, 4- phenylbutyrate, was tested in a Phase I clinical trial in CF subjects and further trials are underway. Other new therapeutic approaches directed at different classes of mutations in CFTR are also discussed. Chemical and pharmacologic agents that regulate endogenous gene expression at different steps in the biosynthetic processing pathway of a membrane glycoprotein will be needed to comprehensively treat a complex inherited disorder like cystic fibrosis.

Original languageEnglish (US)
Pages (from-to)832-837
Number of pages6
JournalKidney international
Issue number3
StatePublished - 2000
Externally publishedYes


  • Butyrates
  • Cystic fibrosis
  • Protein trafficking

ASJC Scopus subject areas

  • Nephrology


Dive into the research topics of 'Pharmacologic restoration of ΔF508 CFTR-mediated chloride current'. Together they form a unique fingerprint.

Cite this