Abstract
To aid in the biochemical analysis of human skin biopsies, a chip-based immunoaffinity capillary electrophoresis (ICE) system has been developed for measuring inflammatory chemokines in micro-dissected areas of the biopsy. Following isolation of the areas of interest, the tissue was solubilized and the analytes of interest were isolated by the immunoaffinity disk within the chip. The captured analytes were labeled in situ with a 635 nm light-emitting laser dye and electro-eluted into the chip separation channel. Electrophoretic separation of all of the analytes was achieved in 2.5 min with quantification of each peak being performed by online LIF detection and integration of each peak area. The degree of accuracy and precision achieved by the chip-based system is comparable to conventional immunoassays and the system is robust enough to be applied to the analysis of clinical samples. Further, with the expanding array of antibodies that are commercially available, this chip-based system can be applied to a wide variety of different biomedical and clinical analyses.
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Acknowledgement
This work was supported by the intra-mural research programme at NIH.
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Phillips, T.M., Wellner, E., McMohan, S., Kalish, H. (2016). Measurement of Inflammatory Chemokines in Micro-dissected Tissue Biopsy Samples by Chip-Based Immunoaffinity Capillary Electrophoresis. In: Tran, N., Taverna, M. (eds) Capillary Electrophoresis of Proteins and Peptides. Methods in Molecular Biology, vol 1466. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-4014-1_10
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DOI: https://doi.org/10.1007/978-1-4939-4014-1_10
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