Journal: Journal of Innate Immunity
Article Title: HSV-1/TLR9-Mediated IFNβ and TNFα Induction Is Mal-Dependent in Macrophages
doi: 10.1159/000504542
Figure Lengend Snippet: TLR9-induced activation of NF-κB in macrophages is Mal-dependent. a Translocation of the NF-κB transcription factor in BMDM cells treated with TLR9 ligand. WT and MalKO BMDM cells were stimulated with CpG-C (5 µM) for 2 h. The nuclear fractions were then isolated and incubated with specific, fluorescently labeled oligonucleotide probes to bind the NF-κB factor. The samples were electrophoresed on a polyacrylamide gel. Visualization was perform-ed using the Odyssey CLx Imaging System (LI-COR). The results presented are representative of at least three independent experiments. b–d Effect of inhibition of NF-κB translocation on Ifnb1, Tnf expression, and biologically active type I IFN release in BMDM cells. Cells were stimulated with CpG-C (5 μM) for 4 h, in the presence or absence of JSH-23 (10 μM), the NF-κB nuclear translocation inhibitor, added 1 h prior to stimulation. Next, total RNA was isolated and relative expression of Ifnb1 (b) or Tnf (c) was assayed with qPCR (2−(ΔΔCT)) using Hprt1 for normalization. Cells were stimulated with CpG-C at 5 μM for 16 h in the presence or absence of JSH-23 (10 μM) added 1 h prior to stimulation. Subsequently, the level of type I interferons in supernatants was determined by a biological method (d). Data are compiled from at least three independent experiments, each experiment being performed in duplicate (mean ± SD). *p < 0.001.
Article Snippet: Cell Culture and Reagents Immortalized BMDM cell lines from wild-type (WT) and Mal–/– mice were obtained from Bei Resources.
Techniques: Activation Assay, Translocation Assay, Isolation, Incubation, Labeling, Imaging, Inhibition, Expressing