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Platform based Detection Technologies from Micro scale to Nanoscale

Published online by Cambridge University Press:  01 February 2011

Vindhya Kundura
Affiliation:
[email protected] State UniversityECEPortland 97201United States
Sudhaprasanna Kumar Padigi
Affiliation:
[email protected], ECE, Portland, 97201, United States
Shalini Prasad
Affiliation:
[email protected], Portland State University, ECE, 160-11, FAB 1900 SW 4th ave, Portland, OR, 97201, United States
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Abstract

Rapid, multiplexed, high throughput detection of proteins is essential for the development of protein biomarkers as sensors. Electrical alignment and detection is a non-invasive, label free technique for rapid identification of bimolecular. We present here a micro fabricated platform based detector for rapidly identifying protein biomarkers present in atherosclerotic plaque for rapid clinical diagnosis of arterial obstruction. This is achieved by electrical assembly of polystyrene beads functionalized with specific antibody receptors (anti-C-reactive protein) .The electrical assembly is achieved using electrophoresis. The polystyrene “bridge” micro structure formed due to electrical assembly aids in the amplification of the antibody-antigen binding event. Antigen (C-reactive protein) at nanogram / ml concentration was detected when binding of the antigen resulted in an amplification of the electrical signal that was measured from the base microelectrode platform. This technique is a demonstration of the application of microscale technology (electrodes) in nanoscale (protein) electrical detection.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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References

1 Takhistov, P., Electrochemical synthesis and impedance characterization of nanopatterned biosensor substrate Biosens Bioelectron. 2004 19(11):1445–56.Google Scholar
2 Huang, Y. et.al., Electric Manipulation of Bioparticles and Macromolecules on Microfabricated Electrodes Anal.Chem. 2001, 73:1549–59Google Scholar
3 Journals of American Heart AssociationGoogle Scholar
4 pethig, Ronald and Markx, GerardApplications of Dielectrophoresis in Biotechnology vol 15 pp 427 Google Scholar
5 Sudhaprasanna, K.P, Ravi Kiran, K.R, Prasad, Shalini ­“Carbon Nanotube based Aliphatic Hydrocarbon Sensor” Journal of Biotechnology 2006 pp 4 Google Scholar