Platelet-derived microparticles stimulated by anti-ß2GPI/ß2GPI complexes induce pyroptosis of endothelial cells in antiphospholipid syndrome.
Platelets
; 34(1): 2156492, 2023 Dec.
Article
en En
| MEDLINE
| ID: mdl-36550078
What is the context? Antiphospholipid syndrome (APS), an acquired autoimmune disease of unknown etiology. Clinical manifestations include arteriovenous thrombosis, recurrent miscarriages and thrombocytopenia. Endothelial cell damage is common in APSAnti-ß2 glycoprotein I antibody, one of the most common APS antibodies, is the main target antigen of anti-ß2GPI. Studies have shown that the anti-ß2GPI/ß2GPI complex accelerates inflammatory cell necrosis.Pyroptosis, also known as inflammatory cell necrosis, is a new form of cell death. Pyroptosis is caused by the activation of the NLRP3 inflammasome, which manifests itself as swelling, lysis and perforation of the cell membrane.Platelet micro-particles (PMPs) are vesicular components that are released extracellularly by platelet activation and are the most abundant and common type of circulating particles in the blood, causing an inflammatory response in the endothelium. There is limited evidence that anti-ß2GPI/ß2GPI complexes can accelerate endothelial cell pyroptosis by mediating platelet activation to produce PMPs. However, more research is needed to investigate the specific mechanisms by which PMPs cause endothelial cell pyroptosis.What is new? This is the first study on the role of NLRP3 in PMPs. NLRP3 expression in PMPs was increased by stimulation of anti-ß2GPI/ß2GPI complexes.NLRP3 in PMPs is closely associated with GSDMD-N, a protein involved in endothelial pyroptosis.Anti-ß2GPI/ß2GPI stimulated PNPs induce pyroptosis via NLRP3/NF-κB/GSDMD and NLRP3/Caspase-1/IL-1ß axis.What is the impact? The aim of this study was to investigate the specific mechanism of endothelial cell pyroptosis induced by platelet-released PMPs activated by anti-ß2GPI/ß2GPI complexes. This finding provides new ideas on the mechanism of endothelial cell scorching in APS and provides a new drug target for the clinical treatment of APS.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Síndrome Antifosfolípido
/
Micropartículas Derivadas de Células
Límite:
Humans
Idioma:
En
Revista:
Platelets
Asunto de la revista:
HEMATOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
Reino Unido