Azide-tagged sphingolipids for the proteome-wide identification of C16-ceramide-binding proteins

Chem Commun (Camb). 2018 Dec 4;54(97):13742-13745. doi: 10.1039/c8cc05691a.

Abstract

Ceramide plays key roles in autophagy, inflammation and apoptosis. However, little is known about the molecular mechanisms regulating its function and only a handful of cellular effectors are known for this lipid. Here we show that azide-tagged sphingolipids are powerful tools to identify ceramide targets. The combination of a protein array analysis and a mass spectrometry-based proteomic profiling successfully detects known ceramide-binding proteins and identifies others not yet reported, several of which we validated using a variety of techniques.

MeSH terms

  • Azides / analysis
  • Azides / chemistry*
  • Carrier Proteins / analysis*
  • Carrier Proteins / chemistry
  • Carrier Proteins / metabolism*
  • Ceramides / chemistry
  • Ceramides / metabolism*
  • Humans
  • Proteome*
  • Sphingolipids / analysis
  • Sphingolipids / chemistry*

Substances

  • Azides
  • Carrier Proteins
  • Ceramides
  • Proteome
  • Sphingolipids