Avtor/Urednik     Bošnjak, Maša; Dolinšek, Tanja; Čemažar, Maja; Kranjc, Simona; Blagus, Tanja; Markelc, Boštjan; Štimac, Monika; Završnik, Janja; Kamenšek, Urška; Heller, Loree C.; Bouquet, Céline; Turk, Boris; Serša, Gregor
Naslov     Gene electrotransfer of plasmid AMEP, an integrin-targeted therapy, has antitumor and antiangiogenic action in murine B16 melanoma
Tip     članek
Vol. in št.     Letnik 22, št. 7
Leto izdaje     2015
Obseg     str. 578-590
ISSN     Gene therapy Med
Jezik     eng
Abstrakt     Gene therapy with Plasmid AMEP (antiangiogenic metargidin peptide) has recently been studied as a potential targeted therapy for melanoma. This plasmid is designed to downregulate %5%1 and %v%3 integrins. In our study, electroporation was used as a nonviral delivery system. We investigated the antiangiogenic and direct antitumor effectiveness of this gene therapy on low and highly metastatic B16 melanoma variants. In vitro, the antiangiogenic effectiveness as determined by tube formation assay on endothelial cells was predominantly dependent on AMEP expression levels. In vivo, antitumor effectiveness was mediated by the inhibition of proliferation, migration and invasion of melanoma cells and correlated with the expression of integrins on tumor cells after intratumor delivery. In addition, reduced metastatic potential was shown. Intramuscular gene electrotransfer of Plasmid AMEP, for AMEP systemic distribution, had no antitumor effect with this specific preventive treatment protocol, confirming that direct tumor delivery was more effective. This study confirms our previous in vitro data that the expression levels of integrins on melanoma cells could be used as a biomarker for antitumor effectiveness in integrin-targeted therapies, whereas the expression levels of AMEP peptide could be a predictive factor for antiangiogenic effectiveness of Plasmid AMEP in the treatment of melanoma.
Proste vsebinske oznake     gensko zdravljenje
elektroporacija
tarčno zdravljenje
melanom
miši
gene therapy
electroporation
targeted therapy
melanoma
glodavci