RT Journal Article T1 Cannabinoid receptor 1 is a potential drug target for treatment of translocation-positive rhabdomyosarcoma A1 Oesch, Susanne A1 Walter, Dagmar A1 Wachtel, Marco A1 Pretre, Kathya A1 Salazar Roa, María A1 Guzmán Pastor, Manuel A1 Velasco Díez, Guillermo A1 Schäfer, Beat AB Gene expression profiling has revealed that the gene coding for cannabinoid receptor 1 (CB1) is highly up-regulated in rhabdomyosarcoma biopsies bearing the typical chromosomal translocations PAX3/FKHR or PAX7/FKHR. Because cannabinoid receptor agonists are capable of reducing proliferation and inducing apoptosis in diverse cancer cells such as glioma, breast cancer, and melanoma, we evaluated whether CB1 is a potential drug target in rhabdomyosarcoma. Our study shows that treatment with the cannabinoid receptor agonists HU210 and Δ9-tetrahydrocannabinol lowers the viability of translocation-positive rhabdomyosarcoma cells through the induction of apoptosis. This effect relies on inhibition of AKT signaling and induction of the stress-associated transcription factor p8 because small interfering RNA–mediated down-regulation of p8 rescued cell viability upon cannabinoid treatment. Finally, treatment of xenografts with HU210 led to a significant suppression of tumor growth in vivo. These results support the notion that cannabinoid receptor agonists could represent a novel targeted approach for treatment of translocation-positive rhabdomyosarcoma PB American Association Cancer Research SN 1535-7163 YR 2009 FD 2009 LK https://hdl.handle.net/20.500.14352/97650 UL https://hdl.handle.net/20.500.14352/97650 LA eng NO Susanne Oesch, Dagmar Walter, Marco Wachtel, Kathya Pretre, Maria Salazar, Manuel Guzmán, Guillermo Velasco, Beat W. Schäfer; Cannabinoid receptor 1 is a potential drug target for treatment of translocation-positive rhabdomyosarcoma. Mol Cancer Ther 1 July 2009; 8 (7): 1838–1845. https://doi.org/10.1158/1535-7163.MCT-08-1147 DS Docta Complutense RD 9 abr 2025