Journal
CLINICAL PROTEOMICS
Volume 14, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s12014-017-9143-3
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Funding
- Belgian Cancer Plan
- Belgian Ministry of Health
- Centre Anti-Cancreux(CAC)
- Federation Wallonie Bruxelles(FWB)
- Societe Royale Belge de Gastro-enterologie(SRBG)
- CHU de Liege
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Background: Despite recent advances in colorectal cancer (CRC) diagnosis and population screening programs, the identification of patients with preneoplastic lesions or with early CRC stages remains challenging and is important for reducing CRC incidence and increasing patient's survival. Methods: We analysed 76 colorectal tissue samples originated from early CRC stages, normal or inflamed mucosa by label-free proteomics. The characterisation of three selected biomarker candidates was performed by immunohistochemistry on an independent set of precancerous and cancerous lesions harbouring increasing CRC stages. Results: Out of 5258 proteins identified, we obtained 561 proteins with a significant differential distribution among groups of patients and controls. KNG1, OLFM4 and Sec24C distributions were validated in tissues and showed different expression levels especially in the two early CRC stages compared to normal and preneoplastic tissues. Conclusion: We highlighted three proteins that require further investigations to better characterise their role in early CRC carcinogenesis and their potential as early CRC markers.
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