RT Journal Article T1 PLGA‑PEI nanoparticle covered with poly(I:C) for personalised cancer immunotherapy A1 González‑Melero, Lorena A1 Santos‑Vizcaíno, Edorta A1 Varela Calviño, Rubén A1 Gómez Touriño, Iria María A1 Asumendi, Aintzane A1 Boyano, María Dolores A1 Igartua, Manoli A1 Hernández, Rosa María K1 Cancer K1 Immunotherapy K1 Nanoparticle K1 Neoantigen K1 PLGA K1 Poly(I:C) K1 Vaccine AB Melanoma is the main cause of death among skin cancers and its incidence worldwide has been experiencing an appalling increase. However, traditional treatments lack effectiveness in advanced or metastatic patients. Immunotherapy, meanwhile, has been shown to be an effective treatment option, but the rate of cancers responding remains far from ideal. Here we have developed a personalized neoantigen peptide-based cancer vaccine by encapsulating patient derived melanoma neoantigens in polyethylenimine (PEI)-functionalised poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) and coating them with polyinosinic:polycytidylic acid (poly(I:C)). We found that PLGA NPs can be effectively modified to be coated with the immunoadjuvant poly(I:C), as well as to encapsulate neoantigens. In addition, we found that both dendritic cells (DCs) and lymphocytes were effectively stimulated. Moreover, the developed NP was found to have a better immune activation profile than NP without poly(I:C) or without antigen. Our results demonstrate that the developed vaccine has a high capacity to activate the immune system, efficiently maturing DCs to present the antigen of choice and promoting the activity of lymphocytes to exert their cytotoxic function. Therefore, the immune response generated is optimal and specific for the elimination of melanoma tumour cells. PB Springer Nature SN 2190-393X YR 2024 FD 2024-03-01 LK https://hdl.handle.net/10347/38953 UL https://hdl.handle.net/10347/38953 LA eng NO Gonzalez-Melero, L., Santos-Vizcaino, E., Varela-Calvino, R., Gomez-Tourino, I., Asumendi, A., Boyano, M. D., Igartua, M., & Hernandez, R. M. (2024). PLGA-PEI nanoparticle covered with poly(I:C) for personalised cancer immunotherapy. Drug Delivery and Translational Research, 14(10), 2788–2803. https://doi.org/10.1007/s13346-024-01557-2 NO CRUE-CSIC DS Minerva RD 22 abr 2026