Journal: Proceedings of the National Academy of Sciences of the United States of America
Article Title: Reprogramming tumor microenvironment via systemic delivery of TLR3 agonist and manganese nanoparticle
doi: 10.1073/pnas.2409559121
Figure Lengend Snippet: Mn 2+ augments IFN-I responses of TLR agonists. ( A ) Mouse BMDCs were incubated with various concentrations of Mn 2+ with or without 10 µg/mL of each TLR agonist, and after 24 h, IFN-β in the media was quantified. ( B ) CT26 tumor-bearing mice were treated by i.t. administration with 10 µg of each TLR agonist with or without 2.5 µg Mn 2+ on days 10, 13, 16, and 19, followed by monitoring of tumor growth. ( C ) Proinflammatory cytokine release from mouse BMDCs treated with either LMW-poly(I:C) (10 µg/mL), Mn 2+ (0 to 500 µM), or their combination. ( D ) Mouse BMDCs were incubated with either 5 µg/mL LMW-poly(I:C), 500 µM Mn 2+ , or their combination for 8 h, followed by immunoblotting for marker proteins in the STING-IFN-I pathway. ( E ) Relative densitometric values of Western blots as measured by ImageJ (NIH). The data represent mean ± SEM from a representative experiment of two independent experiments; n = 4 ( A and C ) and n = 3 to 5 ( B ) biologically independent samples. Two independent experiments were analyzed for ( E ). The data were analyzed by two-way ANOVA ( B and C ) or one-way ANOVA ( E ) with Bonferroni’s multiple comparisons test.
Article Snippet: Mouse BMDCs (1 × 10 5 /well) were seeded in a 96-well plate and incubated with various concentrations of Mn 2+ (Sigma Aldrich, no. 244589) with or without 10 μg/mL of each TLR agonist (Invivogen, no. tlrl-picw, tlrl-pic, tlrl-mdp, tlrl-pms, vac-mpla2, tlrl-r848-1 or Integrated DNA Technologies, no. 01181197Q).
Techniques: Incubation, Western Blot, Marker