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Updated: Aug 13, 2026
Phosphopeptide Enrichment Coupled with Label-free Quantitative Mass Spectrometry to Investigate the Phosphoproteome in Prostate Cancer
Published on: August 2, 2018
[Proteomic analysis of prostate cancer using surface enhanced laser desorption/ionization mass spectrometry]
Yu-zhuo Pan1, Xue-yuan Xiao, Dan Zhao
1Department of Pathophysiology, Basic Medical School, Jilin University, Changchun 130021, China.
Objective:
To identify the serum biomarkers of prostate cancer by using protein chip and bioinformatics.
Methods:
Eighty three prostate cancer (PCA) patients and ninety five healthy people from mass screen in Changchun were detected by surface-enhanced laser desorption/ionization mass spectrometry (SELDI-MS). The data of spectra were analyzed by bioinformatics tools-Biomarker Wizard and Biomarker Pattern.
Results:
Compared with the spectra of healthy people, there were 18 potential markers detected in the spectra of the PCA patients, the protein expression was high in 4 of which and low in the 10 of which. The softwares Biomarkerwizard and Biomarker Pattern automatically, under given conditions, selected 8 biomarker proteins to be used to establish a five layer decision tree differentiate to diagnose PCA and differentiate PCA from healthy people with a specificity of 92.632% and a sensitivity of 96.386%.
Conclusion:
New serum biomarkers of PCA have been identified, and this SELDI mass spectrometry coupled with decision tree classification algorithm will provide a highly accurate and innovative approach for the early diagnosis of PCA.
