TNF and leukemia: Sato et al. finds that salusin-β can be released from THP-1 and U937 human monoblastic leukemia cell lines, while stimulation of THP-1 and U937 by the inflammatory cytokines, tumor necrosis factor-α (TNF-α) and lipopolysaccharide (LPS), results in increased secretion of salusin-β [11], suggesting a potential relationship between salusin-β and inflammatory reaction.