Beauvericin (purity: 97%), 5-diphenyltetrazolium bromide (MTT), and lipopolysaccharide (LPS; E. coli 0111:B4) were purchased from Sigma Chemical Co. (St. Louis, MO, USA). A luciferase construct that contained promoters sensitive to NF-κB was used as reported previously [20 (link)]. Fetal bovine serum (FBS), antibiotics (penicillin and streptomycin), phosphate-buffered saline (PBS), DMEM, RPMI 1640, and trypsin were obtained from Gibco (Grand Island, NY, USA). The murine macrophage cell line RAW264.7 and human embryonic kidney cells were purchased from the American Type Culture Collection (Rockville, CA, USA). PP2 and piceatannol were obtained from Calbiochem (La Jolla, CA, USA). Hoechst staining solution and antibodies (phospho-specific and/or total protein) against p65, p50, lamin A/C, p85, AKT, inhibitor of κBα (IκBα), Src, Syk, Myc, and β-actin were purchased from Cell Signaling Technology (Beverly, MA, USA). Antibody against HA was purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Rhodamine phalloidin was purchased from Life Technologies (Waltham, MA, USA).