Selective adenosine-5'-monophosphate uptake by water-compatible molecularly imprinted polymer

Anal Chim Acta. 2008 Jun 2;616(2):222-9. doi: 10.1016/j.aca.2008.04.025. Epub 2008 Apr 16.

Abstract

Molecularly imprinted polymers (MIPs) were prepared for adenosine-5'-monophosphate (AMP), a substrate of AMP-activated protein kinase. The template molecule was formed by the vinylphenylboronate diester of adenosine on which 5'-free hydroxide was protected by tert-butyldimethylsilyl group in order to mimic the steric hindrance of the phosphate moiety of AMP. Molecular imprinting was performed by complexing acrylamide and the template in a highly cross-linked polymer. MIPs were tested in batch experiments with aqueous samples of nucleotides and a number of parameters were investigated. The use of tetrabutylammonium hydroxide (TBAH) was necessary to obtain a rebinding of nucleotides on MIP. The adsorption of AMP was optimal in 5 mM ammonium acetate buffer solution pH 9.5 for 30 min, with 30 mM of TBAH. The imprinted polymer was selective for AMP towards others nucleotides or deoxi analogues.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenosine Monophosphate / analogs & derivatives
  • Adenosine Monophosphate / analysis*
  • Adenosine Monophosphate / chemical synthesis
  • Adsorption
  • Binding Sites
  • Boronic Acids / chemical synthesis
  • Boronic Acids / chemistry
  • Esters / chemical synthesis
  • Esters / chemistry
  • Hydrogen-Ion Concentration
  • Molecular Imprinting*
  • Molecular Structure
  • Nucleotides / chemistry
  • Osmolar Concentration
  • Particle Size
  • Polymers / chemical synthesis
  • Polymers / chemistry*
  • Quaternary Ammonium Compounds / chemistry
  • Sensitivity and Specificity
  • Water / chemistry*

Substances

  • Boronic Acids
  • Esters
  • Nucleotides
  • Polymers
  • Quaternary Ammonium Compounds
  • Water
  • Adenosine Monophosphate
  • tetrabutylammonium