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Front Oncol. 2020 Aug 18;10:1622. doi: 10.3389/fonc.2020.01622. eCollection 2020.

Tn Antigen Expression Contributes to an Immune Suppressive Microenvironment and Drives Tumor Growth in Colorectal Cancer.

Frontiers in oncology

Lenneke A M Cornelissen, Athanasios Blanas, Anouk Zaal, Joost C van der Horst, Laura J W Kruijssen, Tom O'Toole, Yvette van Kooyk, Sandra J van Vliet

Affiliations

  1. Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection & Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.

PMID: 33014816 PMCID: PMC7461972 DOI: 10.3389/fonc.2020.01622

Abstract

Expression of the tumor-associated glycan Tn antigen (αGalNAc-Ser/Thr) has been correlated to poor prognosis and metastasis in multiple cancer types. However, the exact mechanisms exerted by Tn antigen to support tumor growth are still lacking. One emerging hallmark of cancer is evasion of immune destruction. Although tumor cells often exploit the glycosylation machinery to interact with the immune system, the contribution of Tn antigen to an immunosuppressive tumor microenvironment has scarcely been studied. Here, we explored how Tn antigen influences the tumor immune cell composition in a colorectal cancer (CRC) mouse model. CRISPR/Cas9-mediated knock out of the

Copyright © 2020 Cornelissen, Blanas, Zaal, van der Horst, Kruijssen, O’Toole, van Kooyk and van Vliet.

Keywords: O-glycosylation; Tn antigen; anti-tumor immunity; colorectal cancer; tumor growth

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