Hypoxia-inducible factors regulate tumorigenic capacity of glioma stem cells.

Published

Journal Article

Glioblastomas are lethal cancers characterized by florid angiogenesis promoted in part by glioma stem cells (GSCs). Because hypoxia regulates angiogenesis, we examined hypoxic responses in GSCs. We now demonstrate that hypoxia-inducible factor HIF2alpha and multiple HIF-regulated genes are preferentially expressed in GSCs in comparison to non-stem tumor cells and normal neural progenitors. In tumor specimens, HIF2alpha colocalizes with cancer stem cell markers. Targeting HIFs in GSCs inhibits self-renewal, proliferation, and survival in vitro, and attenuates tumor initiation potential of GSCs in vivo. Analysis of a molecular database reveals that HIF2A expression correlates with poor glioma patient survival. Our results demonstrate that GSCs differentially respond to hypoxia with distinct HIF induction patterns, and HIF2alpha might represent a promising target for antiglioblastoma therapies.

Full Text

Duke Authors

Cited Authors

  • Li, Z; Bao, S; Wu, Q; Wang, H; Eyler, C; Sathornsumetee, S; Shi, Q; Cao, Y; Lathia, J; McLendon, RE; Hjelmeland, AB; Rich, JN

Published Date

  • June 2009

Published In

Volume / Issue

  • 15 / 6

Start / End Page

  • 501 - 513

PubMed ID

  • 19477429

Pubmed Central ID

  • 19477429

Electronic International Standard Serial Number (EISSN)

  • 1878-3686

International Standard Serial Number (ISSN)

  • 1535-6108

Digital Object Identifier (DOI)

  • 10.1016/j.ccr.2009.03.018

Language

  • eng