Immunotherapy of Melanoma With Tumor Antigen RNA and Small Inhibitory RNA Transfected Autologous Dendritic Cells

Summary

Transfection with siRNA targeting the immunoproteasome alters proteasome-mediated antigen processing by the dendritic cell, generating TAA-derived peptides that we hypothesize, based on preclinical results, will induce enhanced anti-melanoma immune responses. This phase I study, open to subjects with metastatic melanoma, will assess the safety of vaccination with melanoma tumor associated antigen-encoding RNA-transfected mature dendritic cells derived from monocytes that have been either untreated, transfected with control siRNA, or transfected with siRNA targeting the inducible immunoproteasome beta subunits LMP2, LMP7, and MECL1. A combination of RNAs encoding melanoma tumor associated antigens MART-1, tyrosinase, gp100, and MAGE-3 will be utilized for dendritic cell transfection. The vaccine will be administered by intradermal injection in the extremities. Clinical and laboratory toxicities will be characterized for each study arm. As a secondary objective, this phase I study will also assess the anti-melanoma immune responses, as well as clinical responses, induced by vaccination with this dendritic cell-based product.

Timeline

Start

2008-01

Primary completion

2013-03

Completion

2013-07

Publications

• Results Dannull J, Haley NR, Archer G, Nair S, Boczkowski D, Harper M, De Rosa N, Pickett N, Mosca PJ, Burchette J, Selim MA, Mitchell DA, Sampson J, Tyler DS, Pruitt SK. Melanoma immunotherapy using mature DCs expressing the constitutive proteasome. J Clin Invest. 2013 Jul;123(7):3135-45. doi: 10.1172/JCI67544. Epub 2013 Jun 24.

Drugs

Indications