Skip Navigation LinksHome > January 2011 - Volume 34 - Issue 1 > Double-blind Placebo-controlled Study With Interleukin-18 an...
Journal of Immunotherapy:
doi: 10.1097/CJI.0b013e3181fe1997
Basic Studies

Double-blind Placebo-controlled Study With Interleukin-18 and Interleukin-12-encoding Plasmid DNA Shows Antitumor Effect in Metastatic Melanoma in Gray Horses

Müller, Jessika- M.V.*; Feige, Karsten*; Wunderlin, Patrizia; Hödl, Andreas; Meli, Marina L.§; Seltenhammer, Monika; Grest, Paula; Nicolson, Lesley; Schelling, Claude**; Heinzerling, Lucie M.††,‡‡

Collapse Box

Abstract

Melanoma is a disease with high incidence in gray horses and has limited therapeutic options in metastatic disease. Gene therapy has shown some success in animal models and human patients. A randomized double-blind, placebo-controlled study was conducted to investigate 2 treatment options using cytokine-encoding plasmid DNA in horses with metastatic melanoma to induce immunologic antitumor effects. Adult gray horses with spontaneously occurring metastatic melanoma (n=26) were included in the study. Treatment of 26 gray horses with metastatic melanoma consisted of interleukin-18-encoding plasmid DNA, interleukin-12-encoding plasmid DNA, or empty plasmid DNA (control group), injected intratumorally, respectively. Tumor response was assessed using ultrasound and caliper measurements and histologic assessment of tumor biopsies. Significant tumor regression could be shown in both the treatment groups receiving IL-18 and IL-12-encoding plasmid DNA whereas placebo-treated control patients showed tumor growth over the course of the treatment. In addition, 7 of 10 tumors from horses treated with IL-18 or IL-12 showed peritumoral and/or intratumoral inflammatory infiltrates after treatment compared with 1 of the 6 in the control group. The treatment as assessed by serial blood draws and clinical investigation, was safe and well tolerated. These data suggest that the intratumoral treatment with IL-18 and IL-12-encoding plasmid DNA has antitumor effects, which is well tolerated and thus holds promise for the treatment of patients with metastatic melanoma.

© 2011 Lippincott Williams & Wilkins, Inc.

Login

Article Tools

Share

Call for Papers

Journal of Immunotherapy has issued a call for papers. With an impact factor of 3.203, JOI is a leading journal in the fields of immunology and oncology.

For manuscript submission, go to: http://www.editorialmanager.com/jit/

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us

Twitter
twitter.com/JOFIonline

For additional oncology content, visit LWW Oncology Journals on Facebook.