Abstract
Dendritic cell (DC)–mediated cancer immunotherapy is a very promising alternative approach to cancer treatment. In a previous study, we successfully transfected bone marrow–derived dendritic progenitors (BMDDPs) with a T7 vector — a nonviral, cytoplasmic-based autogene expression system — encoding a model tumor antigen, firefly luciferase, and subsequently stimulated the transfected cells to differentiate into DCs. When injected into experimental mice, those DCs generated a strong immune response against tumor cells bearing luciferase, which not only prevented occurrence of metastasis but also eradicated existing tumors. In the present study, we constructed a T7 vector encoding mouse tyrosinase, a well-known melanoma associated tumor antigen, and used it to transfect BMDDPs. Reverse transcriptase polymerase chain reaction and Western analysis confirmed the expression of tyrosinase by DCs differentiated from transfected BMDDPs. Two immunizations of these DCs at a dose of 2×106 of each successfully prevented tumor growth. More importantly, one injection of 2×106 of these DCs into mice followed by five doses of recombinant human interleukin-2 administration effectively eradicated existing tumors as indicated by pulmonary metastasis assay. Cancer Gene Therapy (2000) 7, 1448–1455
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, J., Holmes, L., Franek, K. et al. Murine tyrosinase expressed by a T7 vector in bone marrow–derived dendritic progenitors effectively prevents and eradicates melanoma tumors in mice. Cancer Gene Ther 7, 1448–1455 (2000). https://doi.org/10.1038/sj.cgt.7700260
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.cgt.7700260