Journal: Molecular Therapy Oncolytics
Article Title: Molecular characterization of type I IFN-induced cytotoxicity in bladder cancer cells reveals biomarkers of resistance
doi: 10.1016/j.omto.2021.11.006
Figure Lengend Snippet: IFNα is cytotoxic to a subset of bladder cancer cell lines in multiple contexts (A) Schematic of adenoviral tool vectors. The Ad-IFNα2b vector includes hIFNα2b driven by a CMV promoter inserted into the E1 region and GFP driven by the RSV promoter inserted into the E3 region. The Ad-GFP vector includes an empty E1 region and GFP driven by the RSV promoter inserted into the E3 region. Both tool viruses lack viral E1 and E3. (B–G) Cells were exposed to (B) 100,000 U/mL rhIFNα2b, (C) 50 ng/mL TRAIL, (D) Ad-IFNα2b (MOI = 100), (E) Ad-GFP (MOI = 100) and conditioned media (CM) produced by (F) Ad-IFNα2b or (G) Ad-GFP transduced SV-HUC-1 cells. Cytotoxicity is reported as the relative fraction of dead cells after 48 h of treatment. Results are presented as mean ± SD from independent experiments performed in triplicate; N = 2 or 3 for Ad-GFP, N = 3 for all other treatments. (H) Pairwise correlation analysis was performed for all treatments and the Pearson correlation coefficient was determined. Bold indicates P < 0.05. (I) Cells were exposed to Ad-IFNα2b, Ad-GFP, or Ad-empty (MOI = 100 for all); cytotoxicity is reported as the relative fraction of dead cells after 48 h of treatment. Ad, adenovirus vector; CMV, cytomegalovirus; GFP, green fluorescent protein; rhIFNα2b, recombinant human interferon alpha 2b, rhTRAIL, recombinant human TNF-related apoptosis-inducing ligand; RSV, respiratory syncytial virus; SV40 Poly(A), simian virus 40 polyadenylated tail.
Article Snippet: The following other reagents were used in this study: rhIFNα2b (Stem Cell Technologies, 78,077), palbociclib (Cayman, 16,273), rhTRAIL (R&D 375-TL).
Techniques: Plasmid Preparation, Produced, Recombinant, Virus