Temozolomide-induced rna interactome uncovers novel lncrna regulatory loops in glioblastoma

Sabrina Fritah, Arnaud Muller, Wei Jiang, Ramkrishna Mitra, Mohamad Sarmini, Monika Dieterle, Anna Golebiewska, Tao Ye, Eric Van Dyck, Christel Herold-Mende, Zhongming Zhao, Francisco Azuaje, Simone P. Niclou*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

Resistance to chemotherapy by temozolomide (TMZ) is a major cause of glioblastoma (GBM) recurrence. So far, attempts to characterize factors that contribute to TMZ sensitivity have largely focused on protein-coding genes, and failed to provide effective therapeutic targets. Long noncoding RNAs (lncRNAs) are essential regulators of epigenetic-driven cell diversification, yet, their contribution to the transcriptional response to drugs is less understood. Here, we performed RNA-seq and small RNA-seq to provide a comprehensive map of transcriptome regulation upon TMZ in patient-derived GBM stem-like cells displaying different drug sensitivity. In a search for regulatory mechanisms, we integrated thousands of molecular associations stored in public databases to generate a background “RNA interactome”. Our systems-level analysis uncovered a coordinated program of TMZ response reflected by regulatory circuits that involve transcription factors, mRNAs, miRNAs, and lncRNAs. We discovered 22 lncRNAs involved in regulatory loops and/or with functional relevance in drug response and prognostic value in gliomas. Thus, the investigation of TMZ-induced gene networks highlights novel RNA-based predictors of chemosensitivity in GBM. The computational modeling used to identify regulatory circuits underlying drug response and prioritizing gene candidates for functional validation is applicable to other datasets.

Original languageEnglish
Article number2583
Pages (from-to)1-18
Number of pages18
JournalCancers
Volume12
Issue number9
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Chemoresistance
  • Glioblastoma
  • LncRNA
  • Regulatory circuit
  • Temozolomide
  • Transcriptome

Fingerprint

Dive into the research topics of 'Temozolomide-induced rna interactome uncovers novel lncrna regulatory loops in glioblastoma'. Together they form a unique fingerprint.

Cite this