Abstract
Oncogenic transcription factors such as the leukemic fusion protein RUNX1/ETO, which drives t(8;21) acute myeloid leukemia (AML), constitute cancer-specific but highly challenging therapeutic targets. We used epigenomic profiling data for an RNAi screen to interrogate the transcriptional network maintaining t(8;21) AML. This strategy identified Cyclin D2 (CCND2) as a crucial transmitter of RUNX1/ETO-driven leukemic propagation. RUNX1/ETO cooperates with AP-1 to drive CCND2 expression. Knockdown or pharmacological inhibition of CCND2 by an approved drug significantly impairs leukemic expansion of patient-derived AML cells and engraftment in immunodeficient murine hosts. Our data demonstrate that RUNX1/ETO maintains leukemia by promoting cell cycle progression and identifies G1 CCND-CDK complexes as promising therapeutic targets for treatment of RUNX1/ETO-driven AML.
| Original language | English |
|---|---|
| Pages (from-to) | 626-642.e8 |
| Journal | Cancer cell |
| Volume | 34 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 8 Oct 2018 |
| Externally published | Yes |
Keywords
- Animals
- Cell Cycle Checkpoints/genetics
- Cell Line, Tumor
- Chromosomes, Human, Pair 21/genetics
- Core Binding Factor Alpha 2 Subunit/genetics
- Cyclin D2/genetics
- Gene Expression Regulation, Leukemic/genetics
- Humans
- Leukemia, Myeloid, Acute/genetics
- Male
- Mice
- Oncogene Proteins, Fusion/genetics
- Oncogenes/genetics
- Translocation, Genetic/genetics
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