Identification of a novel gene signature for neuroblastoma differentiation using a Boolean implication network.

Abstract

Although induction of differentiation represents an effective strategy for neuroblastoma treatment, the mechanisms underlying neuroblastoma differentiation are poorly understood. We generated a computational model of neuroblastoma differentiation consisting of interconnected gene clusters identified based on symmetric and asymmetric gene expression relationships. We identified a differentiation signature consisting of series of gene clusters comprised of 1251 independent genes that predicted neuroblastoma differentiation in independent datasets and in neuroblastoma cell lines treated with agents known to induce differentiation. This differentiation signature was associated with patient outcomes in multiple independent patient cohorts and validated the role of MYCN expression as a marker of neuroblastoma differentiation. Our results further identified novel genes associated with MYCN via asymmetric Boolean implication relationships that would not have been identified using symmetric computational approaches and that were associated with both neuroblastoma differentiation and patient outcomes. Our differentiation signature included a cluster of genes involved in intracellular signaling and growth factor receptor trafficking pathways that is strongly associated with neuroblastoma differentiation, and we validated the associations of UBE4B, a gene within this cluster, with neuroblastoma cell and tumor differentiation. Our findings demonstrate that Boolean network analyses of symmetric and asymmetric gene expression relationships can identify novel genes and pathways relevant for neuroblastoma tumor differentiation that could represent potential therapeutic targets.

• Authors: Peter E Zage, Yuchen Huo, Divya Subramonian, Christophe Le Clorennec, Pradipta Ghosh, Debashis Sahoo
• Journal: Genes, chromosomes & cancer (Genes Chromosomes Cancer) Vol. 62 Issue 6 Pg. 313-331 (06 2023) ISSN: 1098-2264 [Electronic] United States
• PMID: 36680522 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)
• Copyright: © 2023 Wiley Periodicals LLC.

Chemical References

• N-Myc Proto-Oncogene Protein
• UBE4B protein, human
• Ubiquitin-Protein Ligases

Topics

• Humans
• N-Myc Proto-Oncogene Protein (genetics, metabolism, therapeutic use)
• Cell Line, Tumor
• Gene Expression Regulation, Neoplastic
• Cell Differentiation (genetics)
• Neuroblastoma (pathology)
• Ubiquitin-Protein Ligases (genetics)