Capturing intercellular sugar-mediated ligand-receptor recognitions via a simple yet highly biospecific interfacial system

Sci Rep. 2013:3:2293. doi: 10.1038/srep02293.

Abstract

Intercellular ligand-receptor recognitions are crucial natural interactions that initiate a number of biological and pathological events. We present here the simple construction of a unique class of biomimetic interfaces based on a graphene-mediated self-assembly of glycosyl anthraquinones to a screen-printed electrode for the detection of transmembrane glycoprotein receptors expressed on a hepatoma cell line. We show that an electroactive interface confined with densely clustered galactosyl ligands is able to ingeniously recognize the asialoglycoprotein receptors on live Hep-G2 cells employing simple electrochemical techniques. The only facility used is a personal laptop in connection with a cheap and portable electrochemical workstation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthraquinones / chemistry
  • Biomimetic Materials
  • Biomimetics
  • Biosensing Techniques*
  • Carbohydrate Metabolism*
  • Carbohydrates / chemistry*
  • Cell Line, Tumor
  • Electrochemistry
  • Electrodes
  • Graphite / chemistry
  • Graphite / metabolism
  • Hep G2 Cells
  • Humans
  • Kinetics
  • Lectins / chemistry
  • Lectins / metabolism
  • Ligands*
  • Microscopy, Atomic Force
  • Oxides / chemistry
  • Protein Binding
  • Receptors, Cell Surface / chemistry
  • Receptors, Cell Surface / metabolism
  • Receptors, Cytoplasmic and Nuclear / chemistry
  • Receptors, Cytoplasmic and Nuclear / metabolism*

Substances

  • Anthraquinones
  • Carbohydrates
  • Lectins
  • Ligands
  • Oxides
  • Receptors, Cell Surface
  • Receptors, Cytoplasmic and Nuclear
  • Graphite