Conformable hierarchically engineered polymeric micromeshes enabling combinatorial therapies in brain tumours

Menée à l'aide de sphéroïdes et de modèles murins de glioblastomes, cette étude met en évidence l'intérêt d'implants biodégradables, constitués de micromailles posées sur une couche polymère hydrosoluble, pour délivrer des anticancéreux dans la cavité tumorale

Nature Nanotechnology, sous presse, 2021, résumé

Résumé en anglais

The poor transport of molecular and nanoscale agents through the blood–brain barrier together with tumour heterogeneity contribute to the dismal prognosis in patients with glioblastoma multiforme. Here, a biodegradable implant (μMESH) is engineered in the form of a micrometre-sized poly(lactic-co-glycolic acid) mesh laid over a water-soluble poly(vinyl alcohol) layer. Upon poly(vinyl alcohol) dissolution, the flexible poly(lactic-co-glycolic acid) mesh conforms to the resected tumour cavity as docetaxel-loaded nanomedicines and diclofenac molecules are continuously and directly released into the adjacent tumour bed. In orthotopic brain cancer models, generated with a conventional, reference cell line and patient-derived cells, a single