Abstract
Addiction to oncogene-rewired transcriptional networks is a therapeutic vulnerability in cancer cells, underscoring a need to better understand mechanisms that relay oncogene signals to the transcriptional machinery. Here, using human and mouse T cell acute lymphoblastic leukemia (T-ALL) models, we identify an essential requirement for the endosomal sorting complex required for transport protein CHMP5 in T-ALL epigenetic and transcriptional programming. CHMP5 is highly expressed in T-ALL cells where it mediates recruitment of the coactivator BRD4 and the histone acetyl transferase p300 to enhancers and super-enhancers that enable transcription of T-ALL genes. Consequently, CHMP5 depletion causes severe downregulation of critical T-ALL genes, mitigates chemoresistance and impairs T-ALL initiation by oncogenic NOTCH1 in vivo. Altogether, our findings uncover a non-oncogene dependency on CHMP5 that enables T-ALL initiation and maintenance.
| Original language | English (US) |
|---|---|
| Article number | 4133 |
| Pages (from-to) | 4133 |
| Journal | Nature Communications |
| Volume | 16 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 2025 |
Keywords
- Humans
- Animals
- Transcription Factors/metabolism
- Cell Cycle Proteins/metabolism
- Mice
- Endosomal Sorting Complexes Required for Transport/metabolism
- Transcription, Genetic
- Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Cell Line, Tumor
- Gene Expression Regulation, Leukemic
- Receptor, Notch1/metabolism
- E1A-Associated p300 Protein/metabolism
- Leukemia, T-Cell/genetics
- p300-CBP Transcription Factors/metabolism
- Bromodomain Containing Proteins
- Nuclear Proteins
ASJC Scopus subject areas
- General Chemistry
- General Biochemistry, Genetics and Molecular Biology
- General Physics and Astronomy
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