Stem Cell Reports (Jun 2017)

MicroRNA Signatures and Molecular Subtypes of Glioblastoma: The Role of Extracellular Transfer

  • Jakub Godlewski,
  • Ruben Ferrer-Luna,
  • Arun K. Rooj,
  • Marco Mineo,
  • Franz Ricklefs,
  • Yuji S. Takeda,
  • M. Oskar Nowicki,
  • Elżbieta Salińska,
  • Ichiro Nakano,
  • Hakho Lee,
  • Ralph Weissleder,
  • Rameen Beroukhim,
  • E. Antonio Chiocca,
  • Agnieszka Bronisz

DOI
https://doi.org/10.1016/j.stemcr.2017.04.024
Journal volume & issue
Vol. 8, no. 6
pp. 1497 – 1505

Abstract

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Despite the importance of molecular subtype classification of glioblastoma (GBM), the extent of extracellular vesicle (EV)-driven molecular and phenotypic reprogramming remains poorly understood. To reveal complex subpopulation dynamics within the heterogeneous intratumoral ecosystem, we characterized microRNA expression and secretion in phenotypically diverse subpopulations of patient-derived GBM stem-like cells (GSCs). As EVs and microRNAs convey information that rearranges the molecular landscape in a cell type-specific manner, we argue that intratumoral exchange of microRNA augments the heterogeneity of GSC that is reflected in highly heterogeneous profile of microRNA expression in GBM subtypes.

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