The leukocyte-associated immunoglobulin (Ig)-like receptor-1 modulating cell apoptosis and inflammatory cytokines secretion in THP-1 cells after Helicobacter pylori infection.
Microb Pathog
; 109: 292-299, 2017 Aug.
Article
en En
| MEDLINE
| ID: mdl-28625823
ABSTRACT
OBJECTIVE:
Helicobacter pylori is a Gram-negative, microaerophilic bacteria usually found in the stomach, which may evade its host's immune system and present long-term symptoms in affected individuals. This study aimed to evaluate the functional role of leukocyte-associated immunoglobulin (Ig)-like receptor-1 (LAIR-1) in the strategies and underlying molecular mechanisms by which H. pylori escapes the host's immune responses.METHODS:
LAIR-1 knockdown THP-1 cells were used to detect cell apoptosis, cell proliferation, interleukin-8 (IL-8), IL-10, and activation of intracellular signaling induced by H. pylori.RESULTS:
Cell apoptosis, cell proliferation, IL-8, and IL-10 were increased in THP-1 cells after 24 h of H. pylori infection. Functional analysis indicated LAIR-1 silencing obviously inhibited the phosphorylation of IκBα, eIF2α, JNK, and Smad2 in the THP-1 after H. pylori infection. In addition, there were no significant differences in proliferation rates between control siRNA group and LAIR-1 siRNA group regardless of whether THP-1 cells were infected by H. pylori.CONCLUSION:
These results together indicated that LAIR-1 modulated cell apoptosis and inflammatory cytokines secretion in THP-1 cells, which might help sustain inflammation and prevent removal of the bacteria by the immune responses.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Receptores Inmunológicos
/
Citocinas
/
Helicobacter pylori
/
Infecciones por Helicobacter
/
Apoptosis
Tipo de estudio:
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Microb Pathog
Asunto de la revista:
DOENCAS TRANSMISSIVEIS
/
MICROBIOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
China