Arachidonyl trifluoromethyl ketone

OVA, DNP-IgE, PIPES, 4-nitrophenyl-N-acetyl-β-D-glucosamide, BAY61-3606, Rottlerin, and BAY11-7082 were purchased from Sigma-Aldrich (MO, USA). Arachidonyl trifluoromethyl ketone (ATK) was from Cayman Chemical (MI, USA). Dexamethasone sodium phosphate (Dex) was purchased from Rongsheng Pharmaceutical Co., Ltd. (Jiaozuo, China). Aluminum hydroxide gel was from Meihua chemical industry limited company (Shanghai, China). All enzyme-linked immunosorbent assay (ELISA) kits were from BioLegend (CA, USA). ABC kit was obtained from Zhongshan Golden Bridge Biotechnology Co, Ltd. (Beijing, China). Lymphocyte Separation Medium was from Haoyang Biological Manufacture Co., Ltd. (Tianjin, China). RPMI-1640 medium, DMEM medium, and FBS were from Gibco (NY, USA). DNP-BSA was from Biosearch (CA, USA). Toluidine blue was from Amresco (Ohio, USA). Antibodies against Syk, p-Syk (Y525/526), PKC, p-PKC, NF-κB p65, p-NF-κB p65 (Ser536), cPLA₂, p-cPLA₂ (Ser505), and β-actin were obtained from Cell Signaling Technology (MA, USA). The hemocytometer was from Mindray BC-5000 vet (Shenzhen, China). The inverted research microscope was from Nikon Eclipse Ti2 (Japan). PLE was prepared as described in previous study, and the major compounds in PLE were roseoside, vicenin-2, and rosmarinic acid [17 (link)].