Reevaluation of Pholiota squarrosa lectin-reactive haptoglobin as a pancreatic cancer biomarker using an improved ELISA system

An increase in Lewis- and core-type fucosylation of haptoglobin has been reported in patients with pancreatic cancer (PC), suggesting that fucosylated haptoglobin is a candidate PC biomarker. Previously, we developed a Pholiota squarrosa lectin antibody enzyme-linked immunosorbent assay (PhoSL-ELISA...

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Veröffentlicht in:Glycoconjugate journal 2017-08, Vol.34 (4), p.537-544
Hauptverfasser: Kusama, Ken, Okamoto, Yuki, Saito, Keiko, Kasahara, Tsukasa, Murata, Teizo, Ueno, Yasushi, Kobayashi, Yuka, Kamada, Yoshihiro, Miyoshi, Eiji
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container_issue 4
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container_title Glycoconjugate journal
container_volume 34
creator Kusama, Ken
Okamoto, Yuki
Saito, Keiko
Kasahara, Tsukasa
Murata, Teizo
Ueno, Yasushi
Kobayashi, Yuka
Kamada, Yoshihiro
Miyoshi, Eiji
description An increase in Lewis- and core-type fucosylation of haptoglobin has been reported in patients with pancreatic cancer (PC), suggesting that fucosylated haptoglobin is a candidate PC biomarker. Previously, we developed a Pholiota squarrosa lectin antibody enzyme-linked immunosorbent assay (PhoSL-ELISA) system for the detection of core-fucosylated haptoglobin. However, with this methodology, positive results were only obtained for some patients with PC, demonstrating the need for a more sensitive detection system. In the current study, we developed an improved PhoSL-ELISA system with higher sensitivity to detect core-fucosylated haptoglobin using high-concentration urea as a denaturing agent with lectin to facilitate detection. We then reevaluated the performance of PhoSL reactive-core-fucosylated haptoglobin (PhoSL-HP) as a PC biomarker using the improved PhoSL-ELISA system. PhoSL-HP levels in the sera of patients with PC were significantly higher than those in healthy volunteers, with an area under the curve (AUC) value of 0.753. Furthermore, the AUC value of CA19–9 improved from 0.793 to 0.907 when combined with PhoSL-HP. Additionally, several CA19–9-negative cases among the patients with PC were diagnosed as positive for PhoSL-HP. In conclusion, PhoSL-HP detection using our improved ELISA system might allow PhoSL-HP to serve as a potential biomarker for PC and thus might be useful to complement the detection of CA19–9 in PC diagnosis.
doi_str_mv 10.1007/s10719-017-9772-9
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Additionally, several CA19–9-negative cases among the patients with PC were diagnosed as positive for PhoSL-HP. In conclusion, PhoSL-HP detection using our improved ELISA system might allow PhoSL-HP to serve as a potential biomarker for PC and thus might be useful to complement the detection of CA19–9 in PC diagnosis.</abstract><cop>New York</cop><pub>Springer US</pub><pmid>28455724</pmid><doi>10.1007/s10719-017-9772-9</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Aged
Antigens, Tumor-Associated, Carbohydrate - metabolism
Assaying
Biochemistry
Biomarkers
Biomarkers, Tumor - blood
Biomarkers, Tumor - metabolism
Biomedical and Life Sciences
Biotinylation
Enzyme-linked immunosorbent assay
Enzyme-Linked Immunosorbent Assay - methods
Female
Haptoglobin
Haptoglobins - metabolism
Hep G2 Cells
Humans
Lectins
Lectins - metabolism
Life Sciences
Male
Middle Aged
Original
Original Article
Pancreatic cancer
Pancreatic Neoplasms - blood
Pancreatic Neoplasms - metabolism
Pathology
Pholiota - metabolism
Protein Denaturation
Urea
title Reevaluation of Pholiota squarrosa lectin-reactive haptoglobin as a pancreatic cancer biomarker using an improved ELISA system
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