Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma

Jurcevic, S., Lee, M-H., Thomas, J.L., Liao, C-L., Crnogorac-Jurcevic, T. and Lin, H-Y. 2017. Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma. Microchimica Acta. 184 (6), p. 1773–1780. doi:10.1007/s00604-017-2169-4

TitlePolymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma
AuthorsJurcevic, S., Lee, M-H., Thomas, J.L., Liao, C-L., Crnogorac-Jurcevic, T. and Lin, H-Y.
Abstract

Three peptides (each containing 13–18 amino acids) were synthesized and used as templates for molecular imprinting and epitope recognition of the Regenerating Protein 1B (REG1B), which is one of the urinary biomarkers for pancreatic ductal adenocarcinoma (PDAC). Poly(ethylene-co-vinyl alcohol)s were employed as the host for molecular imprinting of the peptides. Following their preparation, the molecularly imprinted polymers (MIP) were examined by cyclic voltammetry. The electrochemical responses of a screen-printed gold substrate coated with the MIP were measured at a working voltage of 300 mV (vs. Ag/AgCl); the entire protein and the peptides gave similar responses at concentrations of <1.0 pg⋅mL−1, with detection limits as low as 0.1 pg⋅mL−1. Urine samples from healthy and PDAC patients were then analyzed by using this modified gold electrode, and the results are in agreement with data obtained with ELISA.

KeywordsMIP, AFM, ESCA, Cyclic voltammetry, Hexacyanoferrate, Peptide imprinted polymer, PDAC, Epitope recognition
JournalMicrochimica Acta
Journal citation184 (6), p. 1773–1780
ISSN0026-3672
Year2017
PublisherSpringer
Accepted author manuscriptPolymers imprinted_Reg1_accepted.pdf
Digital Object Identifier (DOI)doi:10.1007/s00604-017-2169-4
Publication dates
Published22 Mar 2017

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