The impact of imiquimod, a Toll-like receptor-7 ligand (TLR7L), on the immunogenicity of melanoma peptide vaccination with adjuvant Flt3 ligand.
Mark Shackleton, Ian D Davis, Wendie Hopkins, Heather Jackson, Nektaria Dimopoulos, Tsin Tai, Qiyuan Chen, Phillip Parente, Michael Jefford, Kelly-Anne Masterman, Dania Caron, Weisan Chen, Eugene Maraskovsky, Jonathan Cebon
Cancer Immunity | Published : 2004
Dendritic cells (DCs) show promise as adjuvants in anticancer immunotherapeutic strategies. Flt3 ligand (FL) is a hematopoietic growth factor that increases the number of immature DCs in the blood and other tissues. We treated 27 patients with metastatic or high-risk resected melanoma with s.c. FL daily for 14 d in three 28 d cycles. Eighteen of these patients also received vaccination with influenza (Flu), Melan-A (Mel), tyrosinase (Tyr), and NY-ESO-1 peptides. To induce local DC maturation, 8 of the vaccinated patients had imiquimod, a Toll-like receptor-7 ligand (TLR7L), applied topically to their vaccine sites. Patients were monitored for clinical and hematological effects. Immune respon..View full abstract