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Journal Article
Research Support, Non-U.S. Gov't
Preventative effect of OMZ-SPT on lipopolysaccharide-induced acute lung injury and inflammation via nuclear factor-kappa B signaling in mice.
Biochemical and Biophysical Research Communications 2017 April 2
Acute lung injury (ALI) is an early pathophysiologic change in acute respiratory distress syndrome and its management can be challenging. Omalizumab (Xolair™) is a recombinant DNA-derived, humanized antibody. OMZ-SPT is a polypeptide on the heavy chain of omalizumab monoclonal antibody. Here, we found that intramuscular administration of OMZ-SPT significantly improved survival and attenuated lung inflammation in female C57BL/6 mice suffering from lipopolysaccharide (LPS)-induced ALI. We also demonstrated that OMZ-SPT can inhibit expression of the inflammatory cytokines tumor necrosis factor-α, interleukin-1β and interleukin-6 by ELISA in mice suffering from LPS-induced ALI and a mouse macrophage line (RAW264.7 cells). In addition, we showed that OMZ-SPT inhibited LPS-induced activation of nuclear factor-kappa B (NF-κB) signaling and total expression of NF-κB by western blotting. These data suggest that OMZ-SPT could be a novel therapeutic choice for ALI.
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