Fasciola hepatica GST downregulates NF-κB pathway effectors and inflammatory cytokines while promoting survival in a mouse septic shock model.
Sci Rep
; 9(1): 2275, 2019 02 19.
Article
em En
| MEDLINE
| ID: mdl-30783117
ABSTRACT
Parasitic helminths and helminth-derived molecules have demonstrated to possess powerful anti-inflammatory properties and confirmed therapeutic effects on inflammatory diseases. The helminth Fasciola hepatica has been reported to suppress specific Th1 specific immune responses induced by concurrent bacterial infections, thus demonstrating its anti-inflammatory ability in vivo. In this study, we demonstrate that native F. hepatica glutathione S-transferase (nFhGST), a major parasite excretory-secretory antigen, majorly comprised of Mu-class GST isoforms, significantly suppresses the LPS-induced TNFα and IL1ß of mouse bone-marrow derived macrophages in vitro and the pro-inflammatory cytokine/chemokine storm within C57BL/6 mice exposed to lethal doses of LPS increasing their survival rate by more than 85%. Using THP1-Blue CD14 cells, a human monocyte cell line, we also demonstrate that nFhGST suppresses NF-κB activation in response to multiple TLR-ligands, including whole bacteria clinical isolates and this suppression was found to be dose-dependent and independent of the timing of exposure. Moreover, the suppressive effect of nFhGST on NF-κB activation was shown to be independent of enzyme activity or secondary structure of protein. As part of its anti-inflammatory effect nFhGST target multiple proteins of the canonic and non-canonic NF-κB signaling pathway as well as also JAK/STAT pathway. Overall, our results demonstrate the potent anti-inflammatory properties of nFhGST and its therapeutic potential as an anti-inflammatory agent.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Choque Séptico
/
Transdução de Sinais
/
Proteínas de Helminto
/
Citocinas
/
NF-kappa B
/
Fasciola hepatica
/
Glutationa Transferase
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Porto Rico
País de publicação:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM