期刊
STEM CELL REPORTS
卷 4, 期 5, 页码 899-913出版社
CELL PRESS
DOI: 10.1016/j.stemcr.2015.03.005
关键词
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资金
- First Hospital of China Medical University
- Helmholtz International Graduate School for Cancer Research
- Bundesministerium fur Bildung und Forschung, BMBF [01GS0883, CA163205-01A1, NS083767-01, CA175875-01A1, NS087913-01, P30 CA016058]
Glioblastoma is a highly lethal cancer for which novel therapeutics are urgently needed. Two distinct subtypes of glioblastoma stem-like cells (GSCs) were recently identified: mesenchymal (MES) and proneural (PN). To identify mechanisms to target the more aggressive MES GSCs, we combined transcriptomic expression analysis and kinome-wide short hairpin RNA screening of MES and PN GSCs. In comparison to PN GSCs, we found significant upregulation and phosphorylation of the receptor tyrosine kinase AXL in MES GSCs. Knockdown of AXL significantly decreased MES GSC self-renewal capacity in vitro and inhibited the growth of glioblastoma patient-derived xenografts. Moreover, inhibition of AXL with shRNA or pharmacologic inhibitors also increased cell death significantly more in MES GSCs. Clinically, AXL expression was elevated in the MES GBM subtype and significantly correlated with poor prognosis in multiple cancers. In conclusion, we identified AXL as a potential molecular target for novel approaches to treat glioblastoma and other solid cancers.
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