BAY 11-7082

BAY 11-7082 completely and specifically abrogates NF-κB DNA binding, downregulating the NF-κB-inducible cytokine IL-6 and inducing apoptosis. ^[1]

BAY 11-7082 (< 8 μM) is able to effectively inhibit both basal and TNFα stimulated NFκB luciferase activity in a dose dependent manner. BAY 11-7082 (8 μM) strongly inhibits the rate of proliferation in NCI-H1703 cells. ^[2]

Bay 11-7082 (5 μM) rapidly and efficiently reduces the DNA binding of NF-kappaB in HTLV-I-infected T-cell lines and down-regulates the expression of the antiapoptotic gene, Bcl-x(L), whereas it has little effect on the DNA binding of another transcription factor, AP-1. Bay 11-7082-induced apoptosis of primary ATL cells is more prominent than that of normal peripheral blood mononuclear cells, and apoptosis of these cells is also associated with down-regulation of NF-kappaB activity. Bay 11-7082 (5 μM) selectively induces apoptosis of HTLV-I–infected T-cell lines associated with down-regulation of the expression of cyclin D1, cyclin D2, and Bcl-xL. ^[3]

BAY 11-7082 (100 μM) prevents the nuclear translocation of p65 elicited by NMDA and the NMDA-induced increase of NF-κB binding in mouse hippocampal slices. BAY 11-7082 prevents NMDA toxicity occurring in CA1 region of hippocampal slices with 40% neuroprotection at 20 μM and 70% neuroprotection at 100 μM. ^[4]

BAY 11-7082 at all concentrations tested significantly inhibits NF-κB p65 DNA-binding activity in adipose tissue, whereas in skeletal muscle, BAY 11-7082 at 50 μM and 100 μM significantly inhibits NF-κB p65 DNA-binding activity. BAY 11-7082 (100 μM) reduces IKK-β protein in human adipose tissue and skeletal muscle. BAY 11-7082 (100 μM) significantly decreases the release of TNF-α from adipose tissue, whereas the release of IL-6 and IL-8 is significantly inhibited at all concentrations of BAY 11-7082 tested. BAY 11-7082 (50 μM) significantly decreases the release of TNF-α, IL-6, and IL-8 in skeletal muscle. ^[5]

BAY 11-7082 is also found to inactivate the E2-conjugating enzymes Ubc (ubiquitin conjugating) 13 and UbcH7 and the E3 ligase LUBAC (linear ubiquitin assembly complex), and thus induces B-cell lymphoma and leukaemic T-cell death. ^[6]

BAY 11-7082, an NF-κB inhibitor, induces apoptosis and S phase arrest in gastric cancer cells.

• Cell lines

  NCI-H1703 cells

• Concentrations

  ~8 μM

• Incubation Time

  12 hours

• Method

  Cells are transfected with siRNA in 96-well microtiter plates and then cultured for 72 hours in complete NSCLC medium, treated with BAY 11-7082 for 12 hours. Cells are incubated with [³H]thymidine for 3 hours. The cells are collected on filters using an automatic cell harvester and radioactivity on the filters is measured by β-scintillation counting.

• Animal Models

  Male BALB/c nude mice

• Dosages

  2.5 & 5 mg/kg

• Administration

  i.t.