Journal
LANCET ONCOLOGY
Volume 9, Issue 2, Pages 149-158Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S1470-2045(08)70027-5
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Cholangiocarcinoma, a primary liver tumour that arises from biliary epithelial cells, is increasing in incidence and has poor prognosis. Diagnosis is difficult, particularly in patients with primary sclerosing cholangitis, who are at risk of developing the disease. Timely diagnosis is essential because surgical resection in early disease remains the only cure. The lack of a sensitive and specific early diagnostic marker and of alternative treatments are the main reasons why patients have limited survival. The use of proteomic-based approaches, which analyse the physiological or pathological complement of proteins (ie, the proteome) in cells, tissues, or biological fluids, has received substantial interest in biomarker discovery. Proteomics complements genomic studies and examines functional end-units quantitatively and qualitatively, including post-translational modifications which might vary with disease and might have key roles in protein function or localisation. Major advances in technology and bioinformatics have enhanced proteomic studies, resulting in increased understanding of the pathogenesis of many diseases and in biomarker discovery with effective use of tissues, cell lines, and biological fluids. We review the current status and promise of proteomic-based approaches in biomarker discovery for cholangiocarcinoma.
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