Transcription Instability in High-risk Neuroblastoma is Associated with a Global Perturbation of Chromatin Domains

Overview

Journal Mol Oncol

Specialties Molecular Biology
Oncology

Date 2017 Sep 24

PMID 28941026

Citations 5

Authors

Carlo Zanon

Gian Paolo Tonini

Affiliations

Soon will be listed here.

Abstract

Chromosome instability has a pivotal role among the hallmarks of cancer, but its transcriptional counterpart is rarely considered a relevant factor in cell destabilization. To examine transcription instability (TIN), we first devised a metric we named TIN index and used it to evaluate TIN on a dataset containing more than 500 neuroblastoma samples. We found that metastatic tumors from high-risk (HR) patients are characterized by significantly different TIN index values compared to low/intermediate-risk patients. Our results indicate that the TIN index is a good predictor of neuroblastoma patient's outcome, and a related TIN index gene signature (TIN-signature) is also able to predict the neuroblastoma patient's outcome with high confidence. Interestingly, we find that TIN-signature genes have a strong positional association with superenhancers in neuroblastoma tumors. Finally, we show that TIN is linked to chromatin structural domains and interferes with their integrity in HR neuroblastoma patients. This novel approach to gene expression analysis broadens the perspective of genome instability investigations to include functional aspects.

Citing Articles

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Systematic computational identification of prognostic cytogenetic markers in neuroblastoma.

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