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N-Glycoproteins Have a Major Role in MGL Binding to Colorectal Cancer Cell Lines: Associations with Overall Proteome Diversity.
Pirro, Martina; Mohammed, Yassene; van Vliet, Sandra J; Rombouts, Yoann; Sciacca, Agnese; de Ru, Arnoud H; Janssen, George M C; Tjokrodirijo, Rayman T N; Wuhrer, Manfred; van Veelen, Peter A; Hensbergen, Paul J.
Affiliation
  • Pirro M; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • Mohammed Y; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • van Vliet SJ; Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam UMC, 1105AZ Amsterdam, The Netherlands.
  • Rombouts Y; Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31077 Toulouse, France.
  • Sciacca A; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • de Ru AH; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • Janssen GMC; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • Tjokrodirijo RTN; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • Wuhrer M; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • van Veelen PA; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
  • Hensbergen PJ; Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZC Leiden, The Netherlands.
Int J Mol Sci ; 21(15)2020 Aug 01.
Article in En | MEDLINE | ID: mdl-32752259
Colorectal cancer (CRC) is the second-leading cause of cancer death worldwide due in part to a high proportion of patients diagnosed at advanced stages of the disease. For this reason, many efforts have been made towards new approaches for early detection and prognosis. Cancer-associated aberrant glycosylation, especially the Tn and STn antigens, can be detected using the macrophage galactose-type C-type lectin (MGL/CLEC10A/CD301), which has been shown to be a promising tool for CRC prognosis. We had recently identified the major MGL-binding glycoproteins in two high-MGL-binding CRC cells lines, HCT116 and HT29. However, we failed to detect the presence of O-linked Tn and STn glycans on most CRC glycoproteins recognized by MGL. We therefore investigated here the impact of N-linked and O-linked glycans carried by these proteins for the binding to MGL. In addition, we performed quantitative proteomics to study the major differences in proteins involved in glycosylation in these cells. Our results showed that N-glycans have a significant, previously underestimated, importance in MGL binding to CRC cell lines. Finally, we highlighted both common and cell-specific processes associated with a high-MGL-binding phenotype, such as differential levels of enzymes involved in protein glycosylation, and a transcriptional factor (CDX-2) involved in their regulation.
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Full text: 1 Database: MEDLINE Main subject: Glycoproteins / Colorectal Neoplasms / Proteome / Lectins, C-Type / Proteomics Type of study: Prognostic_studies / Risk_factors_studies / Screening_studies Limits: Humans Language: En Journal: Int J Mol Sci Year: 2020 Type: Article Affiliation country: Netherlands

Full text: 1 Database: MEDLINE Main subject: Glycoproteins / Colorectal Neoplasms / Proteome / Lectins, C-Type / Proteomics Type of study: Prognostic_studies / Risk_factors_studies / Screening_studies Limits: Humans Language: En Journal: Int J Mol Sci Year: 2020 Type: Article Affiliation country: Netherlands