Actin-related protein 5 antagonizes the interaction of Pbx/Meis with myogenic regulatory factors such as MyoD and MyoG, which is involved in the recruitment of the BRG1-based switch/sucrose nonfermentable chromatin remodeling complex required for myogenic gene activation.
Genevieve C Kendall, Sarah Watson ... James F Amatruda
The basic helix-loop-helix transcription factor, HES3, acts downstream of the PAX3-FOXO1 fusion oncogene to impair muscle differentiation and promote tumorigenesis in rhabdomyosarcoma, a childhood muscle cancer.
Joana G Marques, Berkley E Gryder ... Beat W Schäfer
In fusion-positive rhabdomyosarcoma, CHD4 positively regulates super-enhancer-mediated gene expression by allowing a chromatin architecture at these cis-regulatory regions, which is permissive to the binding of the transcription factor PAX3-FOXO1.
Myron S Ignatius, Madeline N Hayes ... David M Langenau
Syngeneic tp53-null zebrafish develop a wide range of tumors that engraft into recipient animals with loss of Tp53 leading to increased metastasis in embryonal rhabdomyosarcoma (ERMS), likely accounting for increased aggression in TP53-inactivated human ERMS.
The functional relevance of stem cell niche perturbation in sarcomagenesis is defined and the mouse model presented provides a rationale for the use of combination therapy for the treatment of genetically heterogeneous sarcomas.
Inês M Tenente, Madeline N Hayes ... David M Langenau
MYF5 and MYOD regulate rhabdomyosaroma growth and tumor-propagating potential, acting more than as passive markers retained from the target cell-of-origin during transformation.
Elena Vasileva, Mikako Warren ... James F Amatruda
A zebrafish genetic model of Ewing sarcoma, a pediatric bone cancer, showed how molecules in the normal tissue can support tumor cells, and identified a therapeutic compound that slows tumor growth.