Abstract
Background
Most of the glycan changes reported in cancers were based on the examinations of a small number of patients or particular proteins. The aim of this study was to determine the changes of the serum N-glycan profile comprehensively in a large number of pancreatic cancer patients and investigate its clinical utility.
Methods
Glycan levels in the serum of 92 pancreatic cancer patients and 243 healthy volunteers (HLT) were examined by comprehensive quantitative high-throughput glycome analysis and were compared with clinical parameters.
Results
Out of 66 glycans detected, 15 were differentially expressed in pancreatic cancer, and 10 out of the 15 glycans were significantly up-regulated in cases with distant metastasis. There was a clear increase in overall expression of serum glycans, especially highly-branched glycans with fucose moieties, in pancreatic cancer. Among these 15 glycans, a tri-antennary complex type glycan (m/z 3195) showed the highest area under the receiver operating characteristic curve (AUROC = 0.799) for the diagnosis of pancreatic cancer. The ratio of pairs of glycans on the same path of the biosynthesis pathway (m/z 3195/1914) was found to be significantly higher in pancreatic cancer than in HLT (median = 1.11 and 0.41, respectively; p < 0.0001, AUROC = 0.831). For this pair ratio, the hazard ratio for survival (2.60, 95 % CI = 1.44–4.79) was higher than that of any single glycan and 1-year survival of patients with a high and low ratio was 36.9 and 69.2 %, respectively, (p = 0.001).
Conclusions
Comprehensive glycome analysis can be used to know the presence of pancreatic cancer, distant metastasis, and patient prognosis, simultaneously.
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Acknowledgments
This work was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (KAKENHI 23590976), partly by a grant for “Development of Systems and Technology for Advanced Measurement and Analysis (SENTAN)” and “The Matching Program for Innovations in Future Drug Discovery and Medical Care” from the Japan Science and Technology Agency (JST) and the Ministry of Education, Culture, Science, and Technology, Japan.
Conflict of interest
Kazuhiro Nouso received a research grant from a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science and a research grant from the Japan Science and Technology Agency (JST). Kazuhiro Nouso belongs to a donation-funded department (Department of Molecular Hepatology, funded by MSD). Shin-Ichiro Nishimura received a research grant from the Japan Science and Technology Agency (JST) and the Ministry of Education, Culture, Science, and Technology, Japan; Shin-Ichiro Nishimura is a Chief Scientific Office of Medical Chemistry Pharmaceuticals LLC. Maho Amano is a Director of Technology at Medical Chemistry Pharmaceuticals LLC. Taku Nakahara is a Director of Ezose Science Inc. Hideki Onishi belongs to a donation-funded department (Department of Molecular Hepatology, funded by MSD). Fusao Ikeda belongs to a donation-funded department (Department of Molecular Hepatology, funded by MSD).
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Nouso, K., Amano, M., Ito, Y.M. et al. Clinical utility of high-throughput glycome analysis in patients with pancreatic cancer. J Gastroenterol 48, 1171–1179 (2013). https://doi.org/10.1007/s00535-012-0732-7
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DOI: https://doi.org/10.1007/s00535-012-0732-7