Sphingomyelin depletion impairs anionic phospholipid inward translocation and induces cholesterol efflux

  • K. Gulshan
  • , Gregory Brubaker
  • , Shuhui Wang
  • , Stanley L. Hazen
  • , Jonathan D. Smith

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Background: Phosphatidylserine floppase activity of ABCA1 is required for optimal cholesterol efflux, as demonstrated via a floppase-impaired ABCA1 mutation. Results: Sphingomyelin depletion compensates for floppase-impaired ABCA1 and increases cell surface phosphatidylserine. Conclusion: Sphingomyelin depletion inhibits flip of anionic phospholipids and thus promotes cholesterol efflux. Significance: Flippase inhibition may serve as a novel drug target to increase cholesterol efflux. © 2013 by The American Society for Biochemistry and Molecular Biology, Inc.
Original languageEnglish
Pages (from-to)37166-37179
Number of pages14
JournalJournal of Biological Chemistry
Volume288
Issue number52
DOIs
StatePublished - Dec 27 2013

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