Transfection of immortalized keratinocytes by low toxic poly(2-(dimethylamino)ethyl methacrylate)-based polymers

N. Van Overstraeten-Schlögel, V. Tevel, Martine Raes, Y. Ho-Shim, P. Dubois, S. Bontems

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs


Skin carcinoma are among the most spread diagnosed tumours in the world. In this study, we investigated the transfection of immortalized keratinocytes, used as an in vitro model for skin carcinoma, using antisense technology and poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA)-based polymers, with original architecture and functionalities. We tested PDMAEMA polymers with different structures: linear, with two (DEA-PDMAEMA) or three (TEA-PDMAEMA) arms. The cytotoxicity of these polymers was assessed over a wide range of apparent M (from 7600 to 64 600). At a N/P ratio of 7.38, cytotoxicity increases with the M . Keratinocytes were transfected with a fluorescent oligonucleotide and then analyzed by flow cytometry. For the three architectures tested, the percentage of transfected cells and abundance of internalized oligonucleotide were closely related to the M of the polymer. Confocal microscopy and FACS analyses showed a wide spread fine granular distribution of the oligonucleotide up to 3 days post-transfection. Then, we assessed the silencing efficiency of the polymers, targeting GFP in GFP expressing keratinocytes. The maximal silencing effect (±40%) was obtained using a DEA-PDMAEMA polymer (M = 30 300). These results suggest that PDMAEMA-based polymers can be efficiently used to transfect immortalized keratinocytes and, thus, open new perspectives in the therapy of skin carcinoma.
langue originaleAnglais
Pages (de - à)739-761
Nombre de pages23
journalJournal of Biomaterials Science, Polymer Edition
Numéro de publication6
Les DOIs
Etat de la publicationPublié - 1 janv. 2012

Empreinte digitale

Examiner les sujets de recherche de « Transfection of immortalized keratinocytes by low toxic poly(2-(dimethylamino)ethyl methacrylate)-based polymers ». Ensemble, ils forment une empreinte digitale unique.

Contient cette citation