Identification of 14-3-3β in human gastric cancer cells and its potency as a diagnostic and prognostic biomarker
Journal
Proteomics
Journal Volume
11
Journal Issue
12
Pages
2423-2439
Date Issued
2011
Author(s)
Tseng C.-W.
Huang H.-C.
Chuang K.-N.
Lin C.-C.
Juan H.-F.
Abstract
Gastric cancer is the second most common cause of cancer deaths worldwide and due to its poor prognosis, it is important that specific biomarkers are identified to enable its early detection. Through 2-D gel electrophoresis and MALDI-TOF-TOF-based proteomics approaches, we found that 14-3-3β, which was one of the proteins that were differentially expressed by 5-fluorouracil-treated gastric cancer SC-M1 cells, was upregulated in gastric cancer cells. 14-3-3β levels in tissues and serum were further validated in gastric cancer patients and controls. The results showed that 14-3-3β levels were elevated in tumor tissues (n=40) in comparison to normal tissues (n=40; p<0.01), and serum 14-3-3β levels in cancer patients (n=145) were also significantly higher than those in controls (n=63; p<0.0001). Elevated serum 14-3-3β levels highly correlated with the number of lymph node metastases, tumor size and a reduced survival rate. Moreover, overexpression of 14-3-3β enhanced the growth, invasiveness and migratory activities of tumor cells. Twenty-eight proteins involved in anti-apoptosis and tumor progression were also found to be differentially expressed in 14-3-3β-overexpressing gastric cancer cells. Overall, these results highlight the significance of 14-3-3β in gastric cancer cell progression and suggest that it has the potential to be used as a diagnostic and prognostic biomarker in gastric cancer. ? 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
SDGs
Other Subjects
biological marker; fluorouracil; protein 14 3 3; protein 14 3 3beta; tumor marker; unclassified drug; adult; aged; amino acid sequence; article; cancer cell; cancer growth; cancer invasion; cancer patient; cell migration; comparative study; controlled study; female; human; human cell; human tissue; major clinical study; male; matrix assisted laser desorption ionization time of flight mass spectrometry; priority journal; protein blood level; protein expression; stomach cancer; survival rate; two dimensional difference gel electrophoresis; 14-3-3 Proteins; Adult; Aged; Aged, 80 and over; Cell Line, Tumor; Cell Movement; Cell Proliferation; Early Diagnosis; Electrophoresis, Gel, Two-Dimensional; Female; Fluorouracil; Gene Expression Profiling; Humans; Lymphatic Metastasis; Male; Middle Aged; Neoplasm Staging; Plasmids; Prognosis; Protein Interaction Mapping; Proteomics; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Stomach; Stomach Neoplasms; Survival Analysis; Transfection; Tumor Markers, Biological
Type
journal article