Inverse Relationship Between Lipopolysaccharide Concentration and Monocyte and Dendritic Cells Inflammatory Response.
J Interferon Cytokine Res
; 40(7): 349-356, 2020 07.
Article
en En
| MEDLINE
| ID: mdl-32460585
ABSTRACT
Dendritic cells (DCs) and monocytes are key immunoregulatory cells that link the innate and adaptive immune response. However, understanding of human cell-specific responses to different doses of stimuli including lipopolysaccharide (LPS) is limited. This study investigated the monocyte and classical DC (cDC)-specific, as well as the overall inflammatory response after exposure to varying doses of LPS. Fresh peripheral whole blood (n = 8) was used in an in vitro peripheral blood culture model to assess cDC and monocyte responses in coculture with varying doses of LPS (0.25, 0.5, 0.75, 1 µg/mL). cDC and monocyte cytokine responses were measured through flow cytometry. Supernatants collected from the in vitro model were used in a cytometric bead array to assess the overall inflammatory response. Exposure to all doses of LPS tested increased monocyte, cDC, and the overall leukocyte response. A dose-dependent reduction in cDC and monocyte cytokine production was also evident with higher LPS doses. This study demonstrates that cell-subset-specific responses are more susceptible to LPS exposure compared with the overall inflammatory response. Therefore, assays that assess cell-specific immune responses may be more beneficial to identify underlying pathophysiology of infection and inflammation.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Células Dendríticas
/
Monocitos
/
Lipopolisacáridos
/
Citocinas
/
Inflamación
Límite:
Humans
Idioma:
En
Revista:
J Interferon Cytokine Res
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Australia