SELDI-TOF MS profiling of serum for detection of laryngeal squamous cell carcinoma and the progression to lymph node metastasis.

Journal of Cancer Research and Clinical Oncology
Lei ChengYan Li

Abstract

Proteomic profiling of serum is an emerging technique to identify new biomarkers indicative of disease severity and progression. Our study was to assess the use of surface enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF MS) to identify multiple serum protein biomarkers for early detection of laryngeal squamous cell carcinoma (LSCC), establish predictive model, and accurately distinguish LSCC patients with or without lymph node metastasis. A cohort of 252 serum samples with LSCC (n = 142) and normal control (n = 110) were consented into this study. These serum samples were randomly divided into training set (including 89 LSCC patients at stages I-II and 65 normal controls, 30 LSCC patients with lymph node metastasis) and blind testing set (including 53 LSCC patients at stages III-IV and 45 normal controls). Serum protein profiles on weak cationic exchange (WCX2) were performed by SELDI-TOF MS and then analyzed by Biomarker Wizard software. The Decision Tree classification algorithm and blind validation were determined by Biomarker Pattern Software (BPS). A panel of 18 biomarkers ranging 2-30 kDa was selected based on their collective contribution to the optimal separation between stages I-II LSCC...Continue Reading

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Citations

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