ADP heptose, a novel pathogen-associated molecular pattern identified in Helicobacter pylori.
FASEB J
; 33(8): 9087-9099, 2019 08.
Article
en En
| MEDLINE
| ID: mdl-31075211
ABSTRACT
The gastric pathogen Helicobacter pylori activates the NF-κB pathway in human epithelial cells via the recently discovered α-kinase 1 TRAF-interacting protein with forkhead-associated domain (TIFA) axis. We and others showed that this pathway can be triggered by heptose 1,7-bisphosphate (HBP), an LPS intermediate produced in gram-negative bacteria that represents a new pathogen-associated molecular pattern (PAMP). Here, we report that our attempts to identify HBP in lysates of H. pylori revealed surprisingly low amounts, failing to explain NF-κB activation. Instead, we identified ADP-glycero-ß-D-manno-heptose (ADP heptose), a derivative of HBP, as the predominant PAMP in lysates of H. pylori and other gram-negative bacteria. ADP heptose exhibits significantly higher activity than HBP, and cells specifically sensed the presence of the ß-form, even when the compound was added extracellularly. The data lead us to conclude that ADP heptose not only constitutes the key PAMP responsible for H. pylori-induced NF-κB activation in epithelial cells, but it acts as a general gram-negative bacterial PAMP.-Pfannkuch, L., Hurwitz, R., Traulsen, J., Sigulla, J., Poeschke, M., Matzner, L., Kosma, P., Schmid, M., Meyer, T. F. ADP heptose, a novel pathogen-associated molecular pattern identified in Helicobacter pylori.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Azúcares de Adenosina Difosfato
/
Helicobacter pylori
/
Moléculas de Patrón Molecular Asociado a Patógenos
/
Heptosas
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Año:
2019
Tipo del documento:
Article