Zoledronate (zoledronic acid), kindly provided by Novartis Pharma AG, was added on the last day of culture to evaluate its immuno-modulatory effects on DC. The drug concentration was selected on the basis of a series of tests performed that determined the ideal concentration of Zoledronate to be 1 μmol/L.
Human Wilms’ tumor gene 1 (WT1) protein was synthesized at JW CreaGene (Seongnam, Republic of Korea). The purity of the protein was confirmed to be >95% by sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS-PAGE). Synthetic protein was dissolved in dimethyl sulfoxide (DMSO) according to the manufacturer’s recommendations and stored at −70 °C until use.