Activation of NLRP3 Inflammasome Complexes by Beta-Tricalcium Phosphate Particles and Stimulation of Immune Cell Migration in vivo.
J Innate Immun
; 14(3): 207-217, 2022.
Article
en En
| MEDLINE
| ID: mdl-34619679
Beta-tricalcium phosphate (ß-TCP) serves as a bone substitute in clinical practice because it is resorbable, biocompatible, osteointegrative, and osteoconductive. Particles of ß-TCP are also inflammatory mediators although the mechanism of this function has not been fully elucidated. Regardless, the ability of ß-TCP to stimulate the immune system might be useful for immunomodulation. The present study aimed to determine the effects of ß-TCP particles on NLR family pyrin domain containing 3 (NLRP3) inflammasome complexes. We found that ß-TCP activates NLRP3 inflammasomes, and increases interleukin (IL)-1ß production in primary cultured mouse dendritic cells (DCs) and macrophages, and human THP-1 cells in caspase-1 dependent manner. In THP-1 cells, ß-TCP increased also IL-18 production, and NLRP3 inflammasome activation by ß-TCP depended on phagocytosis, potassium efflux, and reactive oxygen species (ROS) generation. We also investigated the effects of ß-TCP in wild-type and NLRP3-deficient mice in vivo. Immune cell migration around subcutaneously injected ß-TCP particles was reduced in NLRP3-deficient mice. These findings suggest that the effects of ß-TCP particles in vivo are at least partly mediated by NLRP3 inflammasome complexes.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Inflamasomas
/
Proteína con Dominio Pirina 3 de la Familia NLR
Límite:
Animals
Idioma:
En
Revista:
J Innate Immun
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Suiza