AUTHOR=Yamamoto Yoshinari , Sugimura Ryu , Watanabe Takafumi , Shigemori Suguru , Okajima Takuma , Nigar Shireen , Namai Fu , Sato Takashi , Ogita Tasuku , Shimosato Takeshi 

TITLE=Class A CpG Oligonucleotide Priming Rescues Mice from Septic Shock via Activation of Platelet-Activating Factor Acetylhydrolase

JOURNAL=Frontiers in Immunology

VOLUME=8

YEAR=2017

URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2017.01049

DOI=10.3389/fimmu.2017.01049

ISSN=1664-3224

ABSTRACT=<p>Sepsis is a life-threatening, overwhelming immune response to infection with high morbidity and mortality. Inflammatory response and blood clotting are caused by sepsis, which induces serious organ damage and death from shock. As a mechanism of pathogenesis, platelet-activating factor (PAF) induces excessive inflammatory responses and blood clotting. In this study, we demonstrate that a Class A CpG oligodeoxynucleotide (CpG-A<sub>1585</sub>) strongly induced PAF acetylhydrolase, which generates lyso-PAF. CpG-A<sub>1585</sub> rescued mice from acute lethal shock and decreased fibrin deposition, a hallmark of PAF-induced disseminated intravascular coagulation. Furthermore, CpG-A<sub>1585</sub> improved endotoxin shock induced by lipopolysaccharide, which comprises the cell wall of Gram-negative bacteria and inhibits inflammatory responses induced by cytokines such as interleukin-6 and tumor necrosis factor-α. These results suggest that CpG-A<sub>1585</sub> is a potential therapeutic target to prevent sepsis-related induction of PAF.</p>