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Updated: Feb 22, 2026
09:58
Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
Published on: June 27, 2020
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Prion-like Domains Program Ewing's Sarcoma
1Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Cell
|September 23, 2017
Summary
Prion-like domains drive neurodegenerative diseases. Boulay et al. show that the EWS-FLI1 protein
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Prion-like domains are increasingly recognized for their role in neurodegenerative diseases.
- The EWS-FLI1 fusion protein is a key oncogenic driver in Ewing's sarcoma.
Purpose of the Study:
- To investigate the role of the prion-like domain of EWS-FLI1 in Ewing's sarcoma pathogenesis.
- To understand the molecular mechanisms by which EWS-FLI1 contributes to aberrant transcription.
Main Methods:
- Investigated the biophysical properties of the EWS-FLI1 prion-like domain.
- Assessed the ability of EWS-FLI1 to induce phase separation.
- Examined the recruitment of chromatin-remodeling factors by EWS-FLI1.
- Analyzed the impact on transcriptional programs in Ewing's sarcoma cells.
Main Results:
- The translocated prion-like domain of EWS-FLI1 facilitates liquid-liquid phase separation.
- Phase separation by EWS-FLI1 leads to the inappropriate recruitment of chromatin-remodeling factors.
- This aberrant recruitment drives the oncogenic transcriptional programs characteristic of Ewing's sarcoma.
Conclusions:
- The prion-like domain of EWS-FLI1 is a critical mediator of oncogenic function through phase separation.
- Targeting these phase-separation events could offer novel therapeutic strategies for Ewing's sarcoma.
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