Soluble mediators in packed red blood cells augment lipopolysaccharide-induced monocyte interleukin-1ß production.
Vox Sang
; 115(7): 562-569, 2020 Oct.
Article
em En
| MEDLINE
| ID: mdl-32390268
ABSTRACT
BACKGROUND AND OBJECTIVES:
Soluble mediators in packed red-blood-cell (PRBC) units have been hypothesized as a mechanism associated with transfusion-related immune modulation. Soluble mediators including damage-associated molecular patterns (DAMPs) are known to activate inflammasomes. Inflammasome complexes maturate caspase-1 and interleukin (IL)-1ß. We assessed whether PRBC supernatants (SN) modulated IL-1ß driven inflammation and whether macrophage migration inhibitory factor (MIF) was a contributing factor. MATERIALS ANDMETHODS:
Isolated monocytes were incubated with PRBC-SN in an in vitro transfusion model. Lipopolysaccharide (LPS) was added in parallel to model a bacterial infection. Separately, recombinant MIF was used in the model to assess its role in IL-1ß driven inflammation. IL-1ß and caspase-1 were quantified in the PRBC-SN and culture SN from the in vitro model.RESULTS:
PRBC-SN alone did not induce IL-1ß production from monocytes. However, PRBC-SN alone increased caspase-1 production. LPS alone induced both IL-1ß and caspase-1 production. PRBC-SN augmented LPS-driven IL-1ß and caspase-1 production. Recombinant MIF did not modulate IL-1ß production in our model.CONCLUSIONS:
Soluble mediators in PRBC modulate monocyte IL-1ß inflammation, which may be a contributing factor to adverse effects of transfusion associated with poor patient outcomes. While MIF was present in PRBC-SN, we found no evidence that MIF was responsible for IL-1ß associated immune modulation.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fatores Inibidores da Migração de Macrófagos
/
Oxirredutases Intramoleculares
/
Eritrócitos
/
Interleucina-1beta
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article