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Updated: Dec 9, 2025

Development of Compendium for Esophageal Squamous Cell Carcinoma
Published on: April 12, 2024
(Epi)genetic regulation of osteopontin in colorectal cancerogenesis
Margareta Žlajpah1, Emanuela Boštjančič1, Nina Zidar1
1Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia.
Abstract:
Aim: To identify (epi)genetic regulators of osteopontin (OPN, encoded by SPP1 gene) from normal colon mucosa to adenoma, adenoma with early carcinoma and advanced carcinoma. Patients & methods: Biopsy samples of 41 patients with different patohistologic diagnosis were used. Using qPCR, pyrosequencing and statistical analysis, we determined the expression level of osteopontin regulatory miRNAs, its copy number and methylation status. Results & conclusion: We showed that hsa-miR-146a-5p expression is inversely proportional to the expression level of SPP1 and that expression might be also controlled by copy number and methylation. These results suggest that not only expression of SPP1 but also its copy number, methylation status and expression of its regulators might be used as a potential biomarker of colorectal cancer.
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