BV2 cells were transfected with 1 μg of reporter plasmid DNA ([κB]3-luc, ARE-luc, CRE-luc, or PPRE-luc) using Metafectene transfection reagent (Biontex, Martinsried/Planegg, Germany). The effect of GTS-21 on reporter gene activity was assessed by pre-treating the cells with GTS-21 before LPS stimulation (100 ng/mL; 6 h) after 36 h transfection. Following that, cell lysates were collected and a luciferase assay was performed as described previously [29 (link)].
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