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Updated: Jul 6, 2026

Enhanced Sample Multiplexing of Tissues Using Combined Precursor Isotopic Labeling and Isobaric Tagging (cPILOT)
Published on: May 1, 2017
Synthesis and proteomic activity evaluation of a new isotope-coded affinity tagging (ICAT) reagent
Annalisa Guaragna1, Angela Amoresano, Vittoria Pinto
1Dipartimento di Chimica Organica e Biochimica Università di Napoli Federico II Via Cinthia, 4 I-80126 Napoli, Italy. guaragna@unina.it
Abstract:
During recent years, quantitative proteome profiling has taken advantage of incorporating the traditional stable isotope dilution analysis into global scale or discovery-based proteomic experiments that use mass spectrometers as detectors to allow the pairwise study of differently expressed proteins. Quantitative protein analysis by means of the isotope-coded affinity tag (ICAT) method and tandem mass spectrometry (MS) enables the pairwise comparison of protein expression levels in biological samples. Herein, a modified ICAT reagent, named BAA-ICAT (beta-alanine-arm-ICAT) in which the polyether linker is replaced by a more water-soluble polyamide one, was investigated.

