Curcumin Suppresses IL-1ß Secretion and Prevents Inflammation through Inhibition of the NLRP3 Inflammasome.
J Immunol
; 200(8): 2835-2846, 2018 04 15.
Article
en En
| MEDLINE
| ID: mdl-29549176
ABSTRACT
Turmeric is traditionally used as a spice and coloring in foods. Curcumin is the primary active ingredient in the turmeric, and compelling evidence has shown that it has the ability to inhibit inflammation. However, the mechanism mediating its anti-inflammatory effects are not fully understood. We report that curcumin inhibited caspase-1 activation and IL-1ß secretion through suppressing LPS priming and the inflammasome activation pathway in mouse bone marrow-derived macrophages. The inhibitory effect of curcumin on inflammasome activation was specific to the NLRP3, not to the NLRC4 or the AIM2 inflammasomes. Curcumin inhibited the NLRP3 inflammasome by preventing K+ efflux and disturbing the downstream events, including the efficient spatial arrangement of mitochondria, ASC oligomerization, and speckle formation. Reactive oxygen species, autophagy, sirtuin-2, or acetylated α-tubulin was ruled out as the mechanism by which curcumin inhibits the inflammasome. Importantly, in vivo data show that curcumin attenuated IL-1ß secretion and prevented high-fat diet-induced insulin resistance in wide-type C57BL/6 mice but not in Nlrp3-deficient mice. Curcumin also repressed monosodium urate crystal-induced peritoneal inflammation in vivo. Taken together, we identified curcumin as a common NLRP3 inflammasome activation inhibitor. Our findings reveal a mechanism through which curcumin represses inflammation and suggest the potential clinical use of curcumin in NLRP3-driven diseases.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Antiinflamatorios no Esteroideos
/
Curcumina
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Interleucina-1beta
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Inflamasomas
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Proteína con Dominio Pirina 3 de la Familia NLR
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Immunol
Año:
2018
Tipo del documento:
Article
País de afiliación:
China