Journal: Oncogene
Article Title: S100A8/A9 innate immune signaling as a distinct mechanism driving progression of smoking-related breast cancers.
doi: 10.1038/s41388-025-03276-5
Figure Lengend Snippet: Fig. 5 S100A8/A9 is required for the increased tumorigenicity due to chronic nicotine. A–C HCC38 tumorspheres after treatment with the indicated doses of the S100A8/A9 inhibitor paquinimod (ABR-215757) versus vehicle (DMSO) A, CRISPR/Cas9 knockout of S100A8 versus vector control B, or treatment with the RAGE inhibitor Azeliragon (TTP488) C. n = 3 independent experiments. D Representative images of tumors from HCC38 S100A8 KO or vector control cells treated with vehicle or chronic nicotine. Results are from orthotopic injection of 500 000 cells into inguinal mouse mammary glands and tumors harvested after 10 weeks. Scale bar, 1.5 cm. E Primary tumor volume versus days post- injection. D,E n = 16 tumors per cell type from 2 independent experiments. A–C,E Data represent the mean ± s.e.m. Statistics by two-way ANOVA and Tukey’s multiple comparisons test. A–C *P < 0.05 versus respective vehicle controls. n.s.=not significant. B *P < 0.05, ***P < 0.001. E *P < 0.05 for vehicle- versus nicotine-control cells and control- versus S100A8 KO-nicotine cells. See also Supplementary Fig. 5.
Article Snippet: For experiments with the S100A8/A9 inhibitor paquinimod (ABR-25757) or the RAGE inhibitor Azeliragon (TTP488) (Selleckchem, Houston, TX, USA), a single dose was added only once when embedding cells, and compared against cells receiving the same volume of vehicle (DMSO).
Techniques: CRISPR, Knock-Out, Plasmid Preparation, Control, Injection