In vivo assay: IKK-gamma Inhibitor Peptide Set [NBP2-26504] - NBD peptide blocks constitutive NF-kB activation in human multiple myeloma cells. U266 cells were treated with 100 uM of control (A & B) or NBD peptide (C & D) for 12 hr, cytospun, plated on glass slides, air dried for 1 hr at room temperature and fixed with cold acetone. Slides were blocked with 5% normal goat serum for 1 hr and then incubated with rabbit polyclonal anti-human p65 antibody (A & C) followed by Ig-Alexa 594 second step. In control peptide treated cells, p65 translocates to nucleus (A), whereas NBD peptide prevents translocation of p65 into the nucleus (C). B & D: Nuclear staining with DNA binding dye.