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Published in: Pathology & Oncology Research 1/2017

01-01-2017 | Original Article

Fucosyltransferase-4 and Oligosaccharide Lewis Y Antigen as potentially Correlative Biomarkers of Helicobacter pylori CagA Associated Gastric Cancer

Authors: Faisal Aziz, Wei Gao, Qiu Yan

Published in: Pathology & Oncology Research | Issue 1/2017

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Abstract

H. pylori cytotoxin associated antigen A (CagA) plays a significant role in the progression of gastric cancer but their effect on fucosylation to develop gastric cancer is unknown. Fucosyltransferase IV (FUT4) is the key enzyme for synthesis of LewisY (LeY) carried by glycoproteins and glycolipids on the cell membrane. Herein, we compare the expression of CagA, p-EGFR, FUT4 and LeY in gastritis (n = 128, 176), gastric ulcer (n = 174, 213), and gastric cancer (n = 323, 261) tissue and serum samples, respectively by IHC and ELISA. Moreover, we investigated the potential correlation of CagA with FUT4 and LeY overexpression through EGFR activation. IHC and ELISA results showed higher positive cases of H. pylori CagA (83, 86 %), p-EGFR (81, 72 %), FUT4 (91, 97 %) and LeY (93, 92 %) in gastric cancer, compared to gastritis and gastric ulcer, H. pylori CagA (58, 67 & 59, 73 %), p-EGFR (52, 63 & 35, 47 %), FUT4 (68, 78 & 67, 82 %) and LeY (62,76 & 65, 85 %), respectively. We found a significant high expression (H-Value) of CagA (1.79, 1.66), p-EGFR (1.53, 1.58), FUT4 (2.14, 1.66) and LeY (1.69, 1.61) in gastric cancer tissues and serum, respectively as compared to chronic gastritis and gastric ulcers, CagA (0.64,1.14), p-EGFR (0.856, 0.678), FUT4 (0.949,1.197) and LeY (0.68,1.008) (P < 0.0001), respectively. Furthermore, H. pylori CagA showed significant correlation with p-EGFR (R–0.62, −0.74), FUT4 (R–0.81, −0.76) and LeY (R–0.82, −0.70) in gastric tissues and serum (P < 0.0001). H. pylori CagA plays key role in the development of gastric cancer with overexpression of FUT4/LeY, serve as potentially correlative biomarkers of H. pylori CagA associated gastric cancer.
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Metadata
Title
Fucosyltransferase-4 and Oligosaccharide Lewis Y Antigen as potentially Correlative Biomarkers of Helicobacter pylori CagA Associated Gastric Cancer
Authors
Faisal Aziz
Wei Gao
Qiu Yan
Publication date
01-01-2017
Publisher
Springer Netherlands
Published in
Pathology & Oncology Research / Issue 1/2017
Print ISSN: 1219-4956
Electronic ISSN: 1532-2807
DOI
https://doi.org/10.1007/s12253-016-0122-1

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