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Open AccessArticle

Probing Antigen-Antibody Interaction Using Fluorescence Coupled Capillary Electrophoresis

by Jianhao Wang 1,†, Lin Qiu 1,†, Cheli Wang 1, Yue Zhang 1, Jingyan Li 1, Jiang Xia 2,* and Pengju Jiang 1,*
1
School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, China
2
Department of Chemistry, the Chinese University of Hong Kong, Shatin, Hong Kong
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2013, 14(9), 19146-19154; https://doi.org/10.3390/ijms140919146
Received: 23 August 2013 / Revised: 4 September 2013 / Accepted: 5 September 2013 / Published: 17 September 2013
(This article belongs to the Special Issue Molecular Bases of Cancer Research)
In this report, the use of fluorescence detection coupled capillary electrophoresis (CE-FL) allowed us to fully characterize the antigen-antibody interaction. CE-FL allowed separation of unbound quantum dots (QDs) and ligand bound QDs and also revealed an ordered assembly of biomolecules on QDs. Further, we observed FRET from QDs donor to DyLight acceptor, which were covalently conjugated with human IgG and goat anti-human IgG, respectively. The immunocomplex was formed and the mutual affinity of the antigen and antibody brought QDs and DyLight close enough to allow FRET to occur. This novel CE-based technique can be easily extended to other FRET systems based on QDs and may have potential application in the detection of antibodies. View Full-Text
Keywords: QDs; FRET; immunocomplex; capillary electrophoresis QDs; FRET; immunocomplex; capillary electrophoresis
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MDPI and ACS Style

Wang, J.; Qiu, L.; Wang, C.; Zhang, Y.; Li, J.; Xia, J.; Jiang, P. Probing Antigen-Antibody Interaction Using Fluorescence Coupled Capillary Electrophoresis. Int. J. Mol. Sci. 2013, 14, 19146-19154.

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