Abstract
Epigenetic dysregulation is reported in multiple cancers including Ewing sarcoma (EwS). However, the epigenetic networks underlying the maintenance of oncogenic signaling and therapeutic response remain unclear. Using a series of epigenetics- and complex-focused CRISPR screens, RUVBL1, the ATPase component of NuA4 histone acetyltransferase complex, is identified to be essential for EwS tumor progression. Suppression of RUVBL1 leads to attenuated tumor growth, loss of histone H4 acetylation, and ablated MYC signaling. Mechanistically, RUVBL1 controls MYC chromatin binding and modulates the MYC-driven EEF1A1 expression and thus protein synthesis. High-density CRISPR gene body scan pinpoints the critical MYC interacting residue in RUVBL1. Finally, this study reveals the synergism between RUVBL1 suppression and pharmacological inhibition of MYC in EwS xenografts and patient-derived samples. These results indicate that the dynamic interplay between chromatin remodelers, oncogenic transcription factors, and protein translation machinery can provide novel opportunities for combination cancer therapy.
Original language | English |
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Article number | e2206584 |
Number of pages | 16 |
Journal | Advanced Science |
Volume | 10 |
Issue number | 17 |
Early online date | 19 Apr 2023 |
DOIs | |
Publication status | Published - 13 Jun 2023 |
Keywords
- EEF1A1
- epigenetic
- Ewing sarcoma
- KAT5
- MYC
- RUVBL1
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy
- General Chemical Engineering
- General Materials Science
- Biochemistry, Genetics and Molecular Biology (miscellaneous)
- Medicine (miscellaneous)