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. 2017 Sep 8;7:10981. doi: 10.1038/s41598-017-11496-3

Figure 5.

Figure 5

Identification of 5-LO derivative metabolites in BMDMs after exogenous AA stimulation and treatments. BMDMs were treated with IFN-γ (100 ng/mL) (M1), IL-4 + IL-13 (10 ng/mL) (M2) for 24 h, or only adhered (M0). (A) cAMP in BMDMs pretreated or not with indomethacin (10 mM) for 30 min, or EP2 antagonist (AH6809, 1 mM); with or without subsequent ionophore A23187 (0.5 μM) stimulation for 9 min (two independent experiments in duplicate, n = 2). Lipids in cell culture supernatants were identified and quantified for BMDMs (M0) pretreated with or without indomethacin (10 mM) for 30 min, or diamide (1000 or 500 μM) for 10 min; with or without subsequent ionophore A23187 (0.5 μM) stimulation for 15 min and/or zymosan (10 μg/mL) for 1.5 h diluted in DMEM. In addition, BMDMs were incubated with or without AA (40 μM) for 10 min before treatment and stimulation. (B) HPLC-MS/MS (MRMHR) for eicosanoids: LTB4, LTD4, 5-HETE, and 5-oxo-ETE. (C) PCA with Log autoscaling on HPLC-TOF-MS polar lipids. PCA score discrimination of BMDM total polar lipids with or without AA-stimulation and/or ionophore A23187 post-stimulation (n = 3 from each depot, analysed in duplicate). (D) HPLC-MS/MS (MRMHR) for eicosanoids: LTB4, 5-HETE, and 5-oxo-ETE on AA-stimulated BMDMs with or without treatment, and post-stimulation with ionophore A23187 (n = 3, analysed in duplicate). (A,B, and D) The results are presented as the means ± s.e.m. Differences are considered significant when p < 0.05, *comparing stimulated-BMDMs versus non-stimulated; #treatment versus non-treated stimulated-BMDMs.