N-glycosylation patterns correlate with hepatocellular carcinoma genetic subtypes

Andrew DelaCourt, Alyson Black, Peggi Angel, Richard Drake, Yujin Hoshida, Amit Singal, David Lewin, Bachir Taouli, Sara Lewis, Myron Schwarz, M. Isabel Fiel, Anand S. Mehta

Research output: Contribution to journalArticlepeer-review

Abstract

Hepatocellular carcinoma (HCC) is the second leading cause of cancer deaths globally, and the incidence rate in the United States is increasing. Studies have identified inter- and intratumor heterogeneity as histologic and/or molecular subtypes/variants associated with response to certain molecular targeted therapies. Spatial HCC tissue profiling of N-linked glycosylation by matrix-assisted laser desorption ionization imaging mass spectrometry (MALDI-IMS) may serve as a new method to evaluate the tumor heterogeneity. Previous work has identified significant changes in the N-linked glycosylation of HCC tumors but has not accounted for the heterogeneous genetic and molecular nature of HCC. To determine the correlation between HCC-specific N-glycosylation changes and genetic/molecular tumor features, we profiled HCC tissue samples with MALDI-IMS and correlated the spatial N-glycosylation with a widely used HCC molecular classification (Hoshida subtypes). MALDI-IMS data displayed trends that could approximately distinguish between subtypes, with subtype 1 demonstrating significantly dysregulated N-glycosylation versus adjacent nontumor tissue. Although there were no individual N-glycan structures that could identify specific subtypes, trends emerged regarding the correlation of branched glycan expression to HCC as a whole and fucosylated glycan expression to subtype 1 tumors specifically. Implications: Correlating N-glycosylation to specific subtypes offers the specific detection of subtypes of HCC, which could both enhance early HCC sensitivity and guide targeted clinical therapies.

Original languageEnglish (US)
Pages (from-to)1868-1877
Number of pages10
JournalMolecular Cancer Research
Volume19
Issue number11
DOIs
StatePublished - Nov 2021

ASJC Scopus subject areas

  • Molecular Biology
  • Oncology
  • Cancer Research

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