Journal: iScience
Article Title: Cytosolic bacterial pathogens activate TLR pathways in tumors that synergistically enhance STING agonist cancer therapies
doi: 10.1016/j.isci.2024.111385
Figure Lengend Snippet: IFN-I induction by STING agonists is maintained in infected cells in vitro , and IFNs are not critical for the anti-tumor response in vivo (A) BMDMs were infected with Lm Δ actA Δ inlB ( Lm ), Bt Δ bimA Δ motA2 ( Bt ), or Rp sca2 :Tn ( Rp ) at an MOI of 1. 200 ng of S100 was added immediately after infection and supernatants were collected at 7 hpi. Supernatants were used to stimulate an IFN-I-responsive cell line (ISRE-luciferase) and relative light units (RLUs) were measured 4 h later. Data are combined from ≥3 independent experiments. Data were analyzed using a one-way ANOVA with Tukey’s multiple comparisons test. (B) B16-F10 tumor volume and survival was measured over time after intratumoral delivery with 10 7 Lm Δ actA Δ inlB and 50 μg S100. A single injection was performed for all therapies at d = 0. Data are combined from three independent experiments. Tumor volume data are means +/- SEM. Statistics for tumor growth used two-way ANOVA at day 20; ∗ p < 0.05; ∗∗ p < 0.01; ∗∗∗ p < 0.001; ∗∗∗∗ p < 0.0001; ns = not significant.
Article Snippet: The anti-tumor effects of bacterial pathogens synergize with the STING agonist S100 (A–I) B16-F10 tumor volume and survival was measured over time after intratumoral delivery with the indicated bacterial species and innate immune agonists. cGAMP (Invivogen) and S100 (Chemietek) were used at 50 μg/mouse and were combined with the bacteria immediately prior to injection.
Techniques: Infection, In Vitro, In Vivo, Luciferase, Injection