Development of a sphingosylphosphorylcholine detection system using RNA aptamers

Molecules. 2010 Aug 20;15(8):5742-55. doi: 10.3390/molecules15085742.

Abstract

Sphingosylphosphorylcholine (SPC) is a lysosphingolipid that exerts multiple functions, including acting as a spasmogen, as a mitogenic factor for various types of cells, and sometimes as an inflammatory mediator. Currently, liquid chromatography/tandem mass spectrometry (LC/MS/MS) is used for the quantitation of SPC. However, because of the complicated procedures required it may not be cost effective, hampering its regular usage in a routine practical SPC monitoring. In this report, we have generated RNA aptamers that bind to SPC with high affinity using an in vitro selection procedure and developed an enzyme-linked aptamer assay system using the minimized SPC aptamer that can successfully distinguish SPC from the structurally related sphingosine 1-phosphate (S1P). This is the first case of the Systematic Evolution of Ligands by EXponential enrichment (SELEX) process being performed with a lysosphingolipid. The SPC aptamers would be valuable tools for the development of aptamer-based medical diagnosis and for elucidating the biological role of SPC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aptamers, Nucleotide / chemistry*
  • Aptamers, Nucleotide / genetics
  • Base Sequence
  • Biological Assay
  • Kinetics
  • Molecular Sequence Data
  • Nucleic Acid Conformation
  • Phosphorylcholine / analogs & derivatives*
  • Phosphorylcholine / analysis
  • Phosphorylcholine / chemistry
  • Reproducibility of Results
  • SELEX Aptamer Technique / methods*
  • Sphingosine / analogs & derivatives*
  • Sphingosine / analysis
  • Sphingosine / chemistry
  • Surface Plasmon Resonance

Substances

  • Aptamers, Nucleotide
  • sphingosine phosphorylcholine
  • Phosphorylcholine
  • Sphingosine