NAA40 and lung cancer: To further investigate the effect of NatD on lung cancer cellinvasion in an in vivo model, luciferase-labeled Scr or NatD knockdown A549 cellswere injected into severe combined immunodeficiency (SCID) mice via tail vein.Tumor growth was assessed by bioluminescent (BLI) imaging on days 1, 4, 7, 14, and28.