Fast ferritin immunoassay on PDMS microchips
-
Walter Schrott
,
Marek Nebyla
Abstract
A heterogeneous sandwich immunoassay of ferritin on a poly(dimethylsiloxane) microfluidic chip is proposed. An undemanding “prepolymerization technique” based on wet treatment of a phosphor bronze substrate was used for the microchip fabrication. Receptor rabbit antibodies were immobilized via passive sorption directly on microchannel walls. After the incubation of ferritin samples, secondary biotinylated antibodies were introduced. A solution of avidin molecules labeled by fluorescein isothiocyanate was finally added into the microchannels. Lamp-based fluorescence detection of the immunocomplex was then carried out. Dynamic detection range of the method was in the interval from 100 ng mL−1 to 10 μg mL−1.
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© 2010 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Mechanisms controlling lipid accumulation and polyunsaturated fatty acid synthesis in oleaginous fungi
- Predicting retention indices of aliphatic hydrocarbons on stationary phases modified with metallocyclams using quantitative structure-retention relationships
- New SPME fibre for analysis of mequinol emitted from DVDs
- Continuous production of citric acid from raw glycerol by Yarrowia lipolytica in cell recycle cultivation
- Enhancing the production of gamma-linolenic acid in Hansenula polymorpha by fed-batch fermentation using response surface methodology
- Process characteristics for a gas—liquid system agitated in a vessel equipped with a turbine impeller and tubular baffles
- Kinetic study of pyrolysis of waste water treatment plant sludge
- Transport phenomena in an agitated vessel with an eccentrically located impeller
- Membrane extraction of 1-phenylethanol from fermentation solution
- Theoretical study on transesterification in a combined process consisting of a reactive distillation column and a pervaporation unit
- Wall effects on terminal falling velocity of spherical particles moving in a Carreau model fluid
- The effect of the physical properties of the liquid phase on the gas-liquid mass transfer coefficient in two- and three-phase agitated systems
- Effectiveness of nitric oxide ozonation
- Modelling of nanocrystalline iron nitriding process — influence of specific surface area
- Effect of CeO2 and Sb2O3 on the phase transformation and optical properties of photostable titanium dioxide
- Carnauba wax microparticles produced by melt dispersion technique
- Complexation studies of 3-substituted β-diketones with selected d- and f-metal ions
- Influence of the solvent donor number on the O/W partition ratio of Cu(II) complexes of 1,2-dialkylimidazoles
- Continuous dialysis of sulphuric acid in the presence of zinc sulphate
- Differences in affinity of arylstilbazolium derivatives to tetraplex structures
- Fast ferritin immunoassay on PDMS microchips
