Localized surface plasmon resonance based nanobiosensor for biomarker detection of invasive cancer cells

J Biomed Opt. 2014 May;19(5):051202. doi: 10.1117/1.JBO.19.5.051202.

Abstract

In this study, we describe the development of a cancer biomarker-sensitive nanobiosensor based on localized surface plasmon resonance that enables recognition for proteolytic activity of membrane type 1 matrix metalloproteinase (MT1-MMP) anchored on invasive cancer cells. First of all, we prepared biomarker-detectable substrate based on gold nanorods (GNRs) using nanoparticle adsorption method. The sensitivity of the sensing chip was confirmed using various solvents that have different refractive indexes. Subsequently, MT1-MMP-specific cleavable peptide was conjugated onto the surface of GNRs, and molecular sensing about proteolytic activity was conducted using MT1-MMP and cell lysates. Collectively, we developed a biomarker detectable sensor, which allows for the effective detection of proteolytic activity about MT1-MMP extracted from invasive cancer cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biomarkers, Tumor / analysis*
  • Biosensing Techniques / methods*
  • Cell Line, Tumor
  • Gold / chemistry
  • Humans
  • Immobilized Proteins / chemistry
  • Immobilized Proteins / metabolism
  • Matrix Metalloproteinase 14 / chemistry
  • Matrix Metalloproteinase 14 / metabolism
  • Nanotubes / chemistry
  • Neoplasm Invasiveness
  • Proteolysis
  • Surface Plasmon Resonance / methods*

Substances

  • Biomarkers, Tumor
  • Immobilized Proteins
  • Gold
  • Matrix Metalloproteinase 14