Exogenous Hydrogen Sulfide Regulates Mycoplasma pneumoniae Lipid-Associated Membrane Proteins to Induce Expression of Heme Oxygenase-1 and Proinflammatory Cytokines.
Inflammation
; 43(3): 847-856, 2020 Jun.
Article
em En
| MEDLINE
| ID: mdl-31925623
ABSTRACT
This study was designed to investigate the effect of exogenous hydrogen sulfide (H2S) on the secretion of Heme oxygenase (HO-1) and proinflammatory cytokines in human mononuclear cell line THP-1 stimulated by lipid-associated membrane proteins (LAMPs) prepared from Mycoplasma pneumoniae (M. pneumoniae) and explore its regulatory mechanism. Cultured cells were stimulated with M. pneumoniae LAMPs after pretreatment with H2S to analyze the production of proinflammatory cytokines and HO-1 by enzyme-linked immunosorbent assay (ELISA) and Western blot. The results showed that THP-1 cells, which were stimulated by LAMPs after pretreatment with H2S, had decreased production of interleukin-6 (IL-6) and interleukin-8 (IL-8) by inhibiting the mitogen-activated protein kinases (MAPKs)/nuclear factor-kappa B (NF-κB) signaling pathway and increased expression of HO-1 by activating the nuclear factor E2-related factor 2 (Nrf2) signaling pathway. Our results indicate that H2S may play an important role in attenuating inflammation induced by M. pneumoniae LAMPs due to its ability to decrease the production of IL-6 and IL-8 and increase the expression of the HO-1. These findings support further studies for possible clinical applications.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Citocinas
/
Heme Oxigenase-1
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Proteínas de Membrana Lisossomal
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Células THP-1
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Sulfeto de Hidrogênio
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Mycoplasma pneumoniae
Tipo de estudo:
Risk_factors_studies
Limite:
Humans
Idioma:
En
Revista:
Inflammation
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China