Establishing a non-viral transfection system for fibroblasts using branched polyethylenimine.

ABSTRACT: Enhanced survival of spiral ganglion neurons (SGN) could improve hearing in patients with cochlear implants. Supplying these cells with growth factors like brain-derived neurotropic factor (BDNF) has been shown to improve cell survival and vitality. Direct applications of BDNF, e.g., via integrated drug-delivering cannula, elevate the surgical risks, as well as the probability of infections. Therefore, in vivo production of BDNF by on-site transfection of cells with plasmid DNA coding for BDNF might be an option. Polyethylenimine (PEI) was chosen as a non-viral transfection reagent, due to its comparatively low cytotoxicity, ease of preparation and use. NIH/3T3 fibroblasts were used as model cells for fibroblast transfection that could be transferred to cochlear implants. Branched 25 kDa P

SUBMITTER: Lubbersmeyer TL 

PROVIDER: S-EPMC12324087 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature