Plasmacytoid Dendritic Cell-Derived Type I Interferon Is Involved in Helicobacter pylori Infection-Induced Differentiation of Schlafen 4-Expressing Myeloid-Derived Suppressor Cells.
Infect Immun
; 89(11): e0040721, 2021 10 15.
Article
en En
| MEDLINE
| ID: mdl-34370509
ABSTRACT
During chronic infection with Helicobacter pylori, Schlafen 4-expressing myeloid-derived suppressor cells (SLFN4+ MDSCs) create a microenvironment favoring intestinal metaplasia and neoplastic transformation. SLFN4 can be induced by alpha interferon (IFN-α), which is mainly secreted from plasmacytoid dendritic cells (pDCs). This study tested the hypothesis that Helicobacter pylori infection promotes SLFN4+ MDSC differentiation by inducing pDCs to secrete IFN-α. C57BL/6 mice were gavaged with H. pylori, and infection lasted 2, 4, or 6 months. Mouse pDCs were isolated from bone marrow of wild-type C57BL/6J mice. The results showed that H. pylori infection increased the number of SLFN4+ MDSCs by inducing IFN-α expression in mice. Further mechanistic experiments unraveled that IFN-α induced SLFN4 transcription by binding to the Slfn4 promoter. Furthermore, H. pylori infection stimulated pDCs to secrete IFN-α by activating the TLR9-MyD88-IRF7 pathway. Collectively, Helicobacter pylori infection promotes SLFN4+ MDSC differentiation by inducing secretion of IFN-α from pDCs.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Células Dendríticas
/
Proteínas Portadoras
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Interferón Tipo I
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Helicobacter pylori
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Infecciones por Helicobacter
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Células Supresoras de Origen Mieloide
Límite:
Animals
Idioma:
En
Revista:
Infect Immun
Año:
2021
Tipo del documento:
Article
País de afiliación:
China