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Title: Microchannel gel electrophoretic separation systems and methods for preparing and using

Abstract

A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic separation and quantifying analyte concentration based upon conventional polyacrylamide gel electrophoresis (PAGE). To retain biological activity of proteins and maintain intact immune complexes, native PAGE conditions were employed. Both direct (non-competitive) and competitive immunoassay formats are demonstrated in microchips for detecting toxins and biomarkers (cytokines, c-reactive protein) in bodily fluids (serum, saliva, oral fluids). Further, a description of gradient gels fabrication is included, in an effort to describe methods we have developed for further optimization of on-chip PAGE immunoassays. The described chip-based PAGE immunoassay method enables immunoassays that are fast (minutes) and require very small amounts of sample (less than a few microliters). Use of microfabricated chips as a platform enables integration, parallel assays, automation and development of portable devices.

Inventors:
; ;
Issue Date:
Research Org.:
SNL-A (Sandia National Laboratories, Albuquerque, NM (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1093229
Patent Number(s):
8,524,060
Application Number:
12/728,797
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Herr, Amy, Singh, Anup K, and Throckmorton, Daniel J. Microchannel gel electrophoretic separation systems and methods for preparing and using. United States: N. p., 2013. Web.
Herr, Amy, Singh, Anup K, & Throckmorton, Daniel J. Microchannel gel electrophoretic separation systems and methods for preparing and using. United States.
Herr, Amy, Singh, Anup K, and Throckmorton, Daniel J. Tue . "Microchannel gel electrophoretic separation systems and methods for preparing and using". United States. https://www.osti.gov/servlets/purl/1093229.
@article{osti_1093229,
title = {Microchannel gel electrophoretic separation systems and methods for preparing and using},
author = {Herr, Amy and Singh, Anup K and Throckmorton, Daniel J},
abstractNote = {A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic separation and quantifying analyte concentration based upon conventional polyacrylamide gel electrophoresis (PAGE). To retain biological activity of proteins and maintain intact immune complexes, native PAGE conditions were employed. Both direct (non-competitive) and competitive immunoassay formats are demonstrated in microchips for detecting toxins and biomarkers (cytokines, c-reactive protein) in bodily fluids (serum, saliva, oral fluids). Further, a description of gradient gels fabrication is included, in an effort to describe methods we have developed for further optimization of on-chip PAGE immunoassays. The described chip-based PAGE immunoassay method enables immunoassays that are fast (minutes) and require very small amounts of sample (less than a few microliters). Use of microfabricated chips as a platform enables integration, parallel assays, automation and development of portable devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {9}
}

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