biostudies-literatureMosteiro AGeneralitat de CatalunyaJosep Carreras Leukaemia Research InstituteAsociación Española Contra el CáncerEuropean UnionGebro Pharma (Spain)8889https://www.ebi.ac.uk/biostudies/studies/S-EPMC12470220biostudies-literatureUnknown26(18)Glioblastoma (GB) is one of the most aggressive brain tumors, characterized by high infiltrative capacity that enables tumor cells to invade healthy brain tissue and evade complete surgical resection. This invasiveness contributes to resistance against conventional therapies and a high recurrence rate. Strategies capable of eliminating residual tumor cells are urgently needed. Photodynamic therapy (PDT) using 5-aminolevulinic acid (5-ALA), an FDA- and EMA-approved compound, induces selective accumulation of the photosensitizer protoporphyrin IX (PpIX) in metabolically active tumor cells, enabling targeted cytotoxicity through light activation. A major limitation to its clinical application is the unclear variation in the cytotoxic effect of PDT according to individual tumoral differences. International journal of molecular sciencesA Murine Model of Glioblastoma Initiating Cells and Human Brain Organoid Xenograft for Photodynamic Therapy Testing.PMC12470220CNS2023-144709Not applicable2021SGR00453 and 2021-SGR-01423GCTRA16015SEDALGP17-19Mallo MPedrosa LCabrera GFerres ADiao DSole FSevilla APineda ECaballero GAMosteiro AMunoz-Tuduri MCentellas MJimenez ASBedia CAldecoa IGonzalez Sanchez JJfalseA Murine Model of Glioblastoma Initiating Cells and Human Brain Organoid Xenograft for Photodynamic Therapy Testing.Glioblastoma (GB) is one of the most aggressive brain tumors, characterized by high infiltrative capacity that enables tumor cells to invade healthy brain tissue and evade complete surgical resection. This invasiveness contributes to resistance against conventional therapies and a high recurrence rate. Strategies capable of eliminating residual tumor cells are urgently needed. Photodynamic therapy (PDT) using 5-aminolevulinic acid (5-ALA), an FDA- and EMA-approved compound, induces selective accumulation of the photosensitizer protoporphyrin IX (PpIX) in metabolically active tumor cells, enabling targeted cytotoxicity through light activation. A major limitation to its clinical application is the unclear variation in the cytotoxic effect of PDT according to individual tumoral differences. 2025-01-01T00:00:00Z2025 Sep2026-05-02T03:20:22.764Z2026-05-02T03:11:44.12ZS-EPMC124702204100947010.3390/ijms26188889