Fibroblasts Attenuate Anti-Tumor Drug Efficacy in Tumor Cells via Paracrine Interactions with Tumor Cells in 3D Plexiform Neurofibroma Cultures.

ABSTRACT: Plexiform neurofibromas (hereafter called pNF1) are often diagnosed in early childhood and occur in about 30% of neurofibromatosis type 1 (NF1) patients. pNF1 exhibits aggressive growth along a nerve in the body and has substantial potential for progression to malignant peripheral nerve sheath tumors that are rarely curable. There are two recently FDA-approved drugs, selumetinib and mirdametinib, for pNF1 patients who have symptomatic and inoperable plexiform neurofibromas; however, these treatments achieve only approximately 30% tumor shrinkage. Fibroblasts, the most abundant cell types within the pNF1 tumor microenvironment, are implicated in pNF1 growth and invasion; however, how fibroblasts affect a drug response of pNF1 remains poorly understood. In the present study, we focused on co

SUBMITTER: Ji K 

PROVIDER: S-EPMC12384539 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature