Abstract
In the functional proteome era, the proteomic profiling of clinicopathologic annotated tissues is an essential step for mining and evaluations of candidate biomarkers for disease. Previously, application of routine proteomic methodologies to clinical tissue specimens has provided unsatisfactory results. Multiplex tissue immunoblotting is a method of transferring proteins from a formalin-fixed, paraffin-embedded tissue section to a stack of membranes which can be applied to a conventional immunoblotting method. A single tissue section can be transferred to up to ten membranes, each of which is probed with antibodies and detected with fluorescent tags. By this approach, total protein and target signals can be simultaneously determined on each membrane; hence each antibody is internally normalized. Phosphorylation specific antibodies as well as antibodies that do not readily work well with paraffin-embedded tissue are applicable to the membranes, expanding the menu of antibodies that can be utilized with formalin-fixed tissue. This novel platform can provide quantitative detection retaining histomorphologic detail in clinical samples and has great potential to facilitate discovery and development of new diagnostic assays and therapeutic agents.
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Acknowledgment
The authors wish to thank Michael R. Emmert-Buck for his advice and insights into applications for this platform.
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Chung, JY., Hewitt, S.M. (2015). Proteomic Expressional Profiling of a Paraffin-Embedded Tissue by Multiplex Tissue Immunoblotting. In: Kurien, B., Scofield, R. (eds) Western Blotting. Methods in Molecular Biology, vol 1312. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2694-7_21
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DOI: https://doi.org/10.1007/978-1-4939-2694-7_21
Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-2693-0
Online ISBN: 978-1-4939-2694-7
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