Purine synthesis promotes maintenance of brain tumor initiating cells in glioma.

Published

Journal Article

Brain tumor initiating cells (BTICs), also known as cancer stem cells, hijack high-affinity glucose uptake active normally in neurons to maintain energy demands. Here we link metabolic dysregulation in human BTICs to a nexus between MYC and de novo purine synthesis, mediating glucose-sustained anabolic metabolism. Inhibiting purine synthesis abrogated BTIC growth, self-renewal and in vivo tumor formation by depleting intracellular pools of purine nucleotides, supporting purine synthesis as a potential therapeutic point of fragility. In contrast, differentiated glioma cells were unaffected by the targeting of purine biosynthetic enzymes, suggesting selective dependence of BTICs. MYC coordinated the control of purine synthetic enzymes, supporting its role in metabolic reprogramming. Elevated expression of purine synthetic enzymes correlated with poor prognosis in glioblastoma patients. Collectively, our results suggest that stem-like glioma cells reprogram their metabolism to self-renew and fuel the tumor hierarchy, revealing potential BTIC cancer dependencies amenable to targeted therapy.

Full Text

Duke Authors

Cited Authors

  • Wang, X; Yang, K; Xie, Q; Wu, Q; Mack, SC; Shi, Y; Kim, LJY; Prager, BC; Flavahan, WA; Liu, X; Singer, M; Hubert, CG; Miller, TE; Zhou, W; Huang, Z; Fang, X; Regev, A; Suvà, ML; Hwang, TH; Locasale, JW; Bao, S; Rich, JN

Published Date

  • May 2017

Published In

Volume / Issue

  • 20 / 5

Start / End Page

  • 661 - 673

PubMed ID

  • 28346452

Pubmed Central ID

  • 28346452

Electronic International Standard Serial Number (EISSN)

  • 1546-1726

Digital Object Identifier (DOI)

  • 10.1038/nn.4537

Language

  • eng

Conference Location

  • United States