Current Gene Therapy

Ignacio Anegon
Director INSERM UMR 1064-Center for Research in Transplantation and Immunology
CHU de Nantes. 30, boulevard
Nantes
France

Back

Electroporation Gene Therapy Preclinical and Clinical Trials for Melanoma

Author(s): Loree C. Heller and Richard Heller

Affiliation: Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300, Norfolk, VA 23508, USA.

Keywords: Clinical studies, gene therapy, immunotherapy, in vivo electroporation, melanoma, translational

Abstract:

In vivo electroporation (EP) is a versatile delivery method for gene transfer which can be applied to any accessible tissue. Delivery of plasmid DNA encoding therapeutic genes or cDNAs with in vivo EP has been tested extensively in preclinical melanoma models. Direct delivery to the tumor has been shown to generate a direct antitumor effect. Delivery to alternative sites may generate additional therapeutic options, for example the production of cancer vaccines, the reduction of tumor angiogenesis, or the induction of tumor cell apoptosis. Several of the preclinical therapies tested have a demonstrated therapeutic effect against melanomas. Two immunotherapies have advanced to melanoma clinical trials. Delivery of a plasmid DNA encoding interleukin-12 (IL-12) or interleukin-2 (IL-2) using electroporation was demonstrated to be safe with no grade 3 or 4 toxicities reported. Delivery of IL-12 with electroporation resulted in significant necrosis of melanoma cells in the majority of treated tumors and significant lymphocytic infiltrate in biopsies from patients in several cohorts. In addition, clinical evidence of responses in untreated lesions suggested the induction of a systemic response following therapy. This review discusses preclinically tested electroporation gene therapies for melanoma with clinical potential and the conversion of these therapies to clinical trials.

Order Reprints Order Eprints Rights & PermissionsPrintExport

Article Details

VOLUME: 10
ISSUE: 4
Page: [312 - 317]
Pages: 6
DOI: 10.2174/156652310791823489