LC-MS/MS determination of d-mannose in human serum as a potential cancer biomarker.

Lyndsey White, Jing Ma, Su Liang, Beatriz Sanchez-Espiridion, Dong Liang

Journal of pharmaceutical and biomedical analysis 2017 Apr 15

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Several metabolites in human serum have been identified as potential cancer biomarkers for early detection. This study focuses on the LC-MS/MS method development and validation of d-mannose in human serum. Surrogate blank serum, coupled with stable isotope d-mannose-13C6, as internal standard, was used for generating standard curves ranging from 1 to 50μg/mL. Separation was achieved by an Agilent 1200 series HPLC equipped with a SUPELCOGELTM Pb, 6% Crosslinked column with HPLC water as a mobile phase at flow rate of 0.5mL/min at 80°C. Mass detection was performed under negative ionization electrospray. Inter- and intra-day accuracy and precision were <2%. The extraction recovery and matrix effect were 104.1%-105.5% and 97.0%-100.0%, respectively. This method was successfully applied for the quantification of d-mannose in the serum samples of 320 esophageal cancer patients and 323 healthy volunteers. We report a simple, specific and reproducible LC-MS/MS method for the quantification of d-mannose in human serum as a potential cancer biomarker. Copyright © 2016 Elsevier B.V. All rights reserved.

Citation

Lyndsey White, Jing Ma, Su Liang, Beatriz Sanchez-Espiridion, Dong Liang. LC-MS/MS determination of d-mannose in human serum as a potential cancer biomarker. Journal of pharmaceutical and biomedical analysis. 2017 Apr 15;137:54-59