Peptide imprinted receptors for the determination of the small cell lung cancer associated biomarker progastrin releasing peptide.

Peptide imprinted polymers were developed for detection of progastrin releasing peptide (ProGRP); a low abundant blood based biomarker for small cell lung cancer. The polymers targeted the proteotypic nona-peptide sequence NLLGLIEAK and were used for selective enrichment of the proteotypic peptide prior to LCMS based quantification. Peptide imprinted polymers with the best affinity characteristics were first identified from a 96-polymer combinatorial library. The effects of functional monomers, crosslinker, porogen, and template on adsorption capacity and selectivity for NLLGLIEAK were investigated and optimized. Ultimately, a solid phase extraction method was developed for highly selective enrichment of the target peptide from tryptic digests.
AuthorsAbed Abdel Qader, Javier Urraca, Silje Bøen Torsetnes, Finn Tønnesen, Léon Reubsaet, Börje Sellergren
JournalJournal of chromatography. A (J Chromatogr A) Vol. 1370 Pg. 56-62 (Nov 28 2014) ISSN: 1873-3778 [Electronic] Netherlands
PMID25454129 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2014 Elsevier B.V. All rights reserved.
Chemical References
  • Biomarkers, Tumor
  • Gastrins
  • Peptides
  • Protein Precursors
  • big gastrin
  • Adsorption
  • Amino Acid Sequence
  • Biomarkers, Tumor (analysis)
  • Gastrins (metabolism)
  • Humans
  • Lung Neoplasms (chemistry)
  • Molecular Imprinting (methods)
  • Peptides (chemistry)
  • Protein Precursors (metabolism)
  • Small Cell Lung Carcinoma (chemistry)
  • Solid Phase Extraction (methods)

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