45-μm filter) and stored at room temperature protected from light. Working concentrations of 3M-003 for each experiment were prepared from the stock solution using complete tissue culture medium (CTCM) consisting of RPMI-1640, 10% fetal bovine serum, penicillin 100 U mL−1, and streptomycin 100 μg mL−1. Recombinant murine IFN-γ (0.98 mg mL−1, 3.84 × 107 U mg−1) was supplied by Genentech (S. San Francisco, CA). Unless otherwise

stated, all reagents were purchased from Sigma Chem. Co. (St. Louis, MO). Pathogen-free BALB/c mice, 7–8 weeks old, from Simonsen Lab (Gilroy, CA), were used for isolation of monocytes, neutrophils, and macrophages. Mice selleck chemicals llc were housed and maintained in the animal facilities at the California Institute for Medical Research (CIMR, San Jose, CA). In studies in which PBMC supernatants were generated at 3M Co. and shipped in dry ice to CIMR, pathogen-free BALB/c mice 4–6 weeks of age were used. The project was approved by the institutional animal care and use committees at the 3M Co. and the CIMR. Peripheral blood was obtained by axillary bleeding, 10 mice per experiment, and heparinized (30 U mL−1). Heparinized blood was mixed 1 : 1 in saline and 4 mL was layered over 4 mL of Histopaque 1077 per 15-mL conical centrifuge this website tube. After centrifugation at 400 g for 30 min, PBMC layers were

collected, diluted with RPMI-1640, and PBMC pelleted by centrifugation (400 g, 10 min). PBMC were suspended in CTCM and counted in a hemacytometer. PBMC (5 × 106  mL−1 CTCM) were dispensed, 0.2 mL per microtest plate well (Costar 5936, Corning Co., Corning, NY). After incubation at 37 °C in a 5% CO2 incubator for 2 h, nonadherent cells were removed by aspiration. The number of adherent cells was calculated to be 5 × 105 per well by subtracting nonadherent cells from plated cells. The pelleted PBMC (erythrocytes and neutrophils) resulting from the centrifugation of heparinized Decitabine blood over Histopaque 1077 were collected in saline and mixed

1 : 1 in 3% Dextran 500 (w/v saline). After sedimentation for 1 h at 1 g at 37 °C, the white blood cell layer (neutrophils) was collected and cells were pelleted by centrifugation (400 g, 10 min). Pelleted cells were treated with 0.85% NH4Cl to lyse contaminating red blood cells. Treated neutrophils were suspended in CTCM, counted in a hemacytometer, and plated at 105 per well. Peritoneal macrophages were selected for study as representative of tissue macrophages, a cell type C. albicans would encounter in deep infections. Resident peritoneal cells were collected by lavage of peritoneal cavities (10 mL RPMI/mouse) from 10 mice per experiment. Peritoneal cells were pelleted by centrifugation (400 g, 10 min), pooled, suspended in CTCM, and counted. Peritoneal cells (2 × 106 mL−1 CTCM) were plated, 0.2 mL per microtest plate well, incubated for 2 h at 37 °C in 5% CO2 incubator, and then nonadherent cells aspirated.