RT Journal Article T1 SILAC-based nuclear proteomics uncovers antitumor mechanisms of selenium nanoparticles with in vivo validation in a melanoma model A1 García Calvo, Estefanía A1 Estévez Sánchez, Héctor A1 Álvarez-Fernández García, Roberto A1 Sánchez-Díaz, Raquel A1 Lazcano, Juan José A1 Martín, Pilar A1 Luque García, José Luis AB Chitosan-stabilized selenium nanoparticles (Ch-SeNPs) are promising agents for cancer therapy due to their unique physicochemical properties, including spherical morphology and uniform size distribution. This study investigates the molecular mechanisms underlying their antitumoral effects, with a focus on the nuclear proteome. Quantitative proteomic analysis revealed 343 nuclear proteins, 47 of which showed significant changes following Ch-SeNPs treatment. Key regulators such as CDK1 and CDC5 were implicated in cell cycle arrest and tumor suppression pathways. Ch-SeNPs also affected processes including mRNA metabolism and cytoskeleton organization. In addition, Ch-SeNPs significantly inhibited tumor growth in a murine melanoma model, supporting their therapeutic potential. PB Elsevier YR 2025 FD 2025-06-06 LK https://hdl.handle.net/20.500.14352/121630 UL https://hdl.handle.net/20.500.14352/121630 LA eng NO Estevez H, Garcia-Calvo E, Álvarez-Fernández Garcia R, Sanchez-Diaz R, Lazcano JJ, Martin P, Luque-Garcia JL. SILAC-based nuclear proteomics uncovers antitumor mechanisms of selenium nanoparticles with in vivo validation in a melanoma model. Journal of Drug Delivery Science and Technology 2025; 111: 107155. [DOI: 10.1016/j.jddst.2025.107155] NO This work was supported by Ministerio de Ciencia, Innovacion y Universidades (MICIU) grants PID2020-114529RB-I00 and PID2023- 150182OB-I00. PM is supported by grants from the Madrid Regional Government (S2022/BMD-7209-INTEGRAMUNE-CM), MCIN-ISCIIIFondo de Investigacion ´ Sanitaria (PI22/01759). Hector Estevez acknowledges Ministry of Science, Innovation and Universities from the Spanish Government for a pre-doctoral fellowship (PRE2018-084196 NO Ministerio de Ciencia, Innovacion y Universidades (España) NO Comunidad de Madrid DS Docta Complutense RD 1 ene 2026