Gardiquimod trifluoroacetate

Cell experiment:

Peripheral blood cells (PBMCs) are resuspended at a concentration of 5×106 cells/mL in serum-free RPMI and added to large (150-cm2) tissue culture flasks to permit monocyte attachment. The cells are maintained in a humidified incubator at 37°C with 5% CO2 for a total of 8 days. On the fifth day of culture, the medium is refreshed and one-half of the cells are treated with 0.6 to 3.0 μM Gardiquimod trifluoroacetate for 3 days prior to infection with HIV-1 on day 8 of culture. Control macrophages are left untreated[1].

Animal experiment:

Six- to eight-week-old C57BL/6 mice weighing 20 to 24 g are used in this study. For subcutaneous (s.c.) tumors, 5×104 B16 cells in 100 µL of PBS are injected s.c. into the right flank of C57BL/6 mice on day 0. Mice are vaccinated intravenously with 4×104 DCs on day 7 and peritumorally injected with 1 mg/kg Gardiquimod trifluoroacetate on days 8 and 10. Control mice are injected with an equivalent volume of PBS. Beginning on day 8, the tumor length and width are measured with a vernier caliper, and tumor volume is calculated as length×width2/2. The mice are killed on day 13, and tumors are excised and weighed[2].

References:

[1]. Buitendijk M, et al. Gardiquimod: a Toll-like receptor-7 agonist that inhibits HIV type 1 infection of human macrophages and activated T cells. AIDS Res Hum Retroviruses. 2013 Jun;29(6):907-18.
[2]. Ma F, et al. The TLR7 agonists imiquimod and gardiquimod improve DC-based immunotherapy for melanoma in mice. Cell Mol Immunol. 2010 Sep;7(5):381-8.