Bioinformatics and functional analyses implicate potential roles for EOGT and L-fringe in pancreatic cancers

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Abstract

Notch signaling receptors, ligands, and their downstream target genes are dysregulated in pancreatic ductal adenocarcinoma (PDAC), suggesting a role of Notch signaling in pancreatic tumor development and progression. However, dysregulation of Notch signaling by post-translational modification of Notch receptors remains poorly understood. Here, we analyzed the Notch-modifying glycosyltransferase involved in the regulation of the ligand-dependent Notch signaling pathway. Bioinformatic analysis revealed that the expression of epidermal growth factor (EGF) domain-specific O-linked N-acetylglucosamine (EOGT) and Lunatic fringe (LFNG) positively correlates with a subset of Notch signaling genes in PDAC. The lack of EOGT or LFNG expression inhibited the proliferation and migration of Panc-1 cells, as observed by the inhibition of Notch activation. EOGT expression is significantly increased in the basal subtype, and low expression of both EOGT and LFNG predicts better overall survival in PDAC patients. These results imply potential roles for EOGT- and LFNG-dependent Notch signaling in PDAC.

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Barua, R., Mizuno, K., Tashima, Y., Ogawa, M., Takeuchi, H., Taguchi, A., & Okajima, T. (2021). Bioinformatics and functional analyses implicate potential roles for EOGT and L-fringe in pancreatic cancers. Molecules, 26(4). https://doi.org/10.3390/molecules26040882

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