Journal: Journal of translational medicine
Article Title: AIM2 promotes irradiation resistance, migration ability and PD-L1 expression through STAT1/NF-κB activation in oral squamous cell carcinoma.
doi: 10.1186/s12967-023-04825-w
Figure Lengend Snippet: Fig. 5 The AIM2-triggered IL-1β secretion positively regulates STAT1/NF-κB activation, irradiation resistance, cellular migration ability and PD-L1 expression in OSCC cells. A Dot blot (upper) of three independent experiments (Exp) and histograms (lower) of ELISA results for the IL-1β protein levels in the culture media from HSC4 (left) and SAS (right) cell variants. B Western blot analyses for phosphorylated STAT1/NF-κB, total STAT1/NF-κB and GAPDH protein levels (upper) and histograms for DNA-binding activity of STAT1/NF-κB in luciferase reporter assays (lower) against the AIM2-overexpressing SAS cells treated without or with IL-1β-neutralizing or isotype antibody (Ab, 10 μg/ml of each). C–H Crystal violet staining (upper)/histogram (lower) for colony formation post-treatment without or with irradiation at 4 Gy, Giemsa staining (upper)/ histogram (lower) for the migrated cells and RT-PCR/Western blot analyses for the mRNA/protein levels of PD-L1 and GAPDH (upper)/histograms for PD-L1 transcriptional activity in luciferase assays (lower) against the AIM2-overexpressing SAS cells cultivated in the absence or presence of IL-1β-neutralizing/isotype antibody (C–E) and NF-κB inhibitor SN50 at the indicated concentrations (F–H). In B, E and H, GAPDH was used as an internal control of experiments. The symbol “***” and different alphabets represent p < 0.001 and p < 0.05, respectively
Article Snippet: After blocking step, the membranes were further incubated with primary antibodies against PD-L1 (GTX635975, GeneTex, Hsinchu, Taiwan), phosphorylated (Ser536) NF-κB (#3033)/NF-κB (#6956)/phosphorylated (Tyr701) STAT1 (#9167)/STAT1 (#9172) (Cell Signaling, Danvers, MA, USA) and GAPDH (#PA0212, AbFrontier, Seoul, Korea), IL-1β (#41,059, SAB) overnight at 4 °C.
Techniques: Activation Assay, Irradiation, Migration, Expressing, Dot Blot, Enzyme-linked Immunosorbent Assay, Western Blot, Binding Assay, Activity Assay, Luciferase, Staining, Reverse Transcription Polymerase Chain Reaction, Control