Journal of Shanghai Jiao Tong University (Medical Science) ›› 2023, Vol. 43 ›› Issue (1): 101-107.doi: 10.3969/j.issn.1674-8115.2023.01.013

• Review • Previous Articles    

Research progress in the role and mechanism of acyloxyacyl hydrolase in diseases

WU Zhenkai(), DENG Bo, PAN Yu, DING Feng()   

  1. Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
  • Received:2022-08-02 Accepted:2022-09-29 Online:2022-12-21 Published:2022-12-21
  • Contact: DING Feng;
  • Supported by:
    National Natural Science Foundation of China(81870462);Shanghai Sailing Program(20YF1423400)


Lipopolysaccharide (LPS) is an essential component of the outer wall of gram-negative bacteria and can induce a strong inflammatory response in the body. Acyloxyacyl hydrolase (AOAH) is a highly conserved host lipase expressed in a variety of cells, including neutrophils, macrophages and proximal tubular epithelial cells. AOAH can inactivate LPS by selectively removing the secondary acyl chains from the lipid A moiety of gram-negative bacterial LPS, which alleviates inflammation and tissue damage, promotes the recovery from the immune tolerance and regains normal responsiveness. It plays an essential role in host defenses against infection. Moreover, AOAH has been shown invivo and invitro for a variety of enzymatic activities including phospholipase, lysophospholipase and diacylglycerol lipase. Researches increasingly show that AOAH plays a critical role in various noninfectious diseases such as allergic asthma, psoriasis, chronic pelvic pain and other autoimmune diseases and chronic inflammatory diseases in addition to infections. Besides, DING Feng Research Group, Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine found that AOAH was capable of attenuating renal fibrosis via proximal renal tubular epithelial cells CD74 signaling pathway. Given the increasingly diverse role of AOAH in diseases, this article reviews its sources, structure, effects and possible mechanisms in diseases in order to provide reference for future research on its roles in diseases and new lines of investigation into disease pathogenesis and novel therapeutic targets.

Key words: lipopolysaccharide, acyloxyacyl hydrolase (AOAH), inflammation, fibrosis

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