Journal: Journal of Innate Immunity
Article Title: Pharmacological Stimulator of Interferon Genes Activation Enhances Autophagy-Mediated Clearance of Mycobacterium tuberculosis in Human Macrophages
doi: 10.1159/000550530
Figure Lengend Snippet: Activation of the STING signaling pathway enhances autophagy in Mtb-infected macrophages. a Western blot analysis of LC3-I to LC3-II conversion in THP-1 cells treated with 4 µ m ADU-S100, 20 µ m HCQ, or si-cGAS for 24 h during Mtb infection. β-actin was used as a loading control. b Densitometric analysis of the LC3-II/β-actin ratio from three independent experiments ( n = 3). ADU-S100 significantly increased LC3-II levels (* p < 0.05). c Representative confocal microscopy images showing the colocalization of Mtb-EGFP (green) and LysoTracker Red-stained lysosomes (red). Nuclei were stained with DAPI (blue). Scale bar = 10 µm. Quantitative analysis is provided in online suppl. Fig. 2. Data in ( b ) are presented as mean ± SD. Statistical analysis was performed using one-way ANOVA with Tukey’s post hoc test. * p < 0.05; *** p < 0.001.
Article Snippet: The cGAS-STING signaling pathway agonists ADU-S100 (HY-12885A) and autophagy inhibitor hydroxychloroquine (HCQ) (HY-B1370) were obtained from MCE (China).
Techniques: Activation Assay, Infection, Western Blot, Control, Confocal Microscopy, Staining