Nrf2 regulates the inflammatory response, including heme oxygenase-1 induction, by mycoplasma pneumoniae lipid-associated membrane proteins in THP-1 cells. Issue 4 (18th April 2017)

• Record Type: Journal Article
• Authors: Hu, Jihong; Chen, Chunyan; Ou, Guangli; You, Xiaoxing; Tan, Tianping; Hu, Xinnian; Zeng, Yihua; Yu, Minjun; Zhu, Cuiming
• Is Part Of: Pathogens and disease. Volume 75:Issue 4(2017:Jun.)
• Publication Date: 2017-04-18
• Subjects: Mycoplasma pneumonia -- lipid-associated membrane proteins (LAMPs) -- nuclear factor E2-related factor 2 (Nrf2) -- inflammatory reactant -- heme oxygenase-1 (HO-1); Medical microbiology -- Periodicals; Pathogenic microorganisms -- Periodicals; Communicable diseases -- Microbiology -- Periodicals; Communicable diseases -- Pathogenesis -- Periodicals; Host-parasite relationships -- Periodicals; Systems biology -- Periodicals; 616.904105
• DOI: 10.1093/femspd/ftx044
• Languages: English
• ISSNs: 2049-632X

Abstract

Abstract: A series of inflammatory responses caused by Mycoplasma pneumoniae largely depend on the lipid-associated membrane proteins (LAMPs). Nuclear factor E2-related factor 2 (Nrf2), a transcription factor, is considered to be a critical modulator of inflammatory responses and cellular redox homeostasis. Monocytes play an important role in the invasion and immunity to resist pathogens. Here, we investigated the role of Nrf2 in the anti-inflammatory response stimulated by LAMPs using the human monocyte cell line THP-1. LAMPs were shown to affect the localization of Nrf2, and the levels of reactive oxygen species and inflammatory reactants, including nitric oxide (NO), prostaglandin E2 (PGE2 ) and cytokines (IL-6, IL-8), were highly elevated in LAMP-stimulated Nrf2-silenced THP-1 cells. Moreover, LAMPs induced the levels of mRNA and the expression of heme oxygenase-1 (HO-1). In summary, our results demonstrated that LAMPs cause nuclear translocation of Nrf2, which further suppresses the expression of inflammatory reactants in THP-1 cells. Abstract : Nrf2 regulates the inflammatory response, including heme oxygenase-1 induction, by Mycoplasma pneumoniae lipid-associated membrane proteins in THP-1 cells.