was purchased from ATCC and cultured in complete Dulbecco’s
modified Eagle’s medium (DMEM, Gibco) supplemented with 10%
fetal bovine serum (FBS; Gibco), 100 U/mL penicillin (HyClone), and
100 μg/mL streptomycin (HyClone). HEK-Blue hTLR7 reporter cells
were purchased from InvivoGen. The cell lines were maintained and
subcultured in growth medium (DMEM, 10% FBS, 50 U/mL penicillin, 50
μg/mL streptomycin, 100 mg/mL Normocin, 2 mM
supplemented with 10 μg/mL of blasticidin and 100 μg/mL
of Zeocin. Bone marrow-derived dendritic cells (BMDCs) were harvested
from 8-week-old Balb/c mice. BMDCs were cultured in BMDC primary media:
RPMI 1640 (HyClone), 10% FBS, 100 U/mL penicillin, 100 μg/mL
streptomycin, 20 ng/mL GM-CSF (Sino Biological), and 10 ng/mL IL-4
(Sino Biological). All cell lines and assay cultures were maintained
at 37 °C and 5% CO2. Cell lines were tested regularly
for mycoplasma contamination, and none used tested positive at any
point.