Dotting out AML by targeting Fibrillarin.
Cancer Res
; 2024 Jun 26.
Article
in En
| MEDLINE
| ID: mdl-38924716
ABSTRACT
Dysregulated biomolecular condensates, formed through multivalent interactions among proteins and nucleic acids have been recently identified to drive tumorigenesis. In acute myeloid leukemia (AML), condensates driven by RNA-binding proteins (RBPs) alter transcriptional networks. Yang and colleagues performed a CRISPR screen and identified Fibrillarin (FBL) as a new driver in AML leukemogenesis. FBL depletion caused cell cycle arrest and death in AML cells, with minimal impact on normal cells. FBL's phase separation domains are essential for pre-rRNA processing, influencing AML cell survival by regulating ribosome biogenesis and the translation of oncogenic proteins like MYC. Therapeutically, the chemotherapeutic agent CGX-635 targets FBL, inducing its aggregation, impairing pre-rRNA processing, and reducing AML cell survival. This highlights FBL's phase separation as a therapeutic vulnerability in AML. These findings suggest that targeting the phase separation properties of RBPs could offer a novel and effective strategy for AML treatment. Further research into condensate dynamics in cancer and development of condensate-modulating drugs holds significant promise for future cancer therapies.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Cancer Res
Year:
2024
Type:
Article
Affiliation country:
United States