Journal: PLoS ONE
Article Title: An Autocrine Cytokine/JAK/STAT-Signaling Induces Kynurenine Synthesis in Multidrug Resistant Human Cancer Cells
doi: 10.1371/journal.pone.0126159
Figure Lengend Snippet: A. The cDNA from A549 and A549/dx cells was analyzed by a PCR array specific for IL-6/STAT3 signaling, as reported under Materials and methods. The fold regulation of the 83 genes analyzed, expressed in logarithmic scale, was represented in a colorimetric scale. The figure is the mean of 4 experiments. B. The levels of IL-6, IL-4, IL-1β, IL-13, CD40L, IFN-γ were measured in the cell culture supernatants by specific ELISAs. Data are presented as means ± SD (n = 3). * p < 0.02, ** p < 0.005, *** p < 0.001: A549/dx cells versus A549 cells.
Article Snippet: The production of cytokines was measured in the cell culture supernatant using the following commercial kits: Human interleukin-6 (IL-6) Duo Set Development Kit (R&D Systems), Human interleukin-4 (IL-4) DuoSet Development Kit (R&D Systems), Human IL1-beta (IL-1β) platinum ELISA kit (eBioscience, San Diego, CA), Human interleukin-13 (IL-13) ELISA Development Kit (Peprotech, London, UK), Human soluble CD40 Ligand (sCD40L) ELISA Development Kit (Peprotech), Human tumor necrosis factor- α (TNF-α) DuoSet Development Kit (R&D Systems), Human IFN-γ DuoSet Development Kit (R&D Systems).
Techniques: Cell Culture