Bletilla striata polysaccharides ameliorate metabolic-associated fatty liver disease by decreasing the NLRP3 inflammasome and pyroptosis

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Detalles Bibliográficos
Publicado en:	Frontiers in Pharmacology vol. 16 (Jun 2025), p. 1563275-1563291
Autor principal:	Yu, Tingting
Otros Autores:	Xue, Juan, Tang, Wenqian, Wu, Xiaojie, Li, Jun, Yang, Fan, Luo, Lei
Publicado:	Frontiers Media SA
Materias:	China Physiology Caspase-1 Antibodies High fat diet Alanine transaminase Anti-inflammatory agents Pyroptosis Fatty liver Cytokines Cholesterol Metabolism Chromatography Liver diseases Animal models Apoptosis Enzyme-linked immunosorbent assay Oligomerization Proteins Inflammation Aqueous solutions Pyrin protein Polysaccharides Immunofluorescence Inflammasomes Hydrochloric acid Aspartate aminotransferase Biotechnology industry Immunohistochemistry Tumor necrosis factor-TNF Molecular weight Liver cirrhosis Pathogenesis Metabolites Signal transduction Western blotting Bletilla striata
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Descripción
Resumen:	Background:The role of nucleotide-binding oligomerization domain-like receptors containing pyrin domain 3 (NLRP3) inflammasome and pyroptosis in the inflammatory microenvironment of metabolic-associated fatty liver disease (MASLD) has been posited as crucial. Bletilla striata polysaccharides (BSPs), extracted from the tubers of Bletilla striata (Thunb.) Rchb.f. , exhibit significant anti-inflammatory properties. However, their potential protective effects on MASLD and their role in regulating pyroptosis remain unclear.Objectives:This study investigates the efficacy of BSP-1, a purified metabolite isolated from crude BSPs, on MASLD by evaluating its ability to modulate the NLRP3/caspase-1/GSDMD signaling pathway.Methods:To simulate MASLD in vivo and in vitro , high-fat diet (HFD)-induced rat models and free fatty acid (FFA)-stimulated HepG2 cells were used. Serum indicators and histopathological staining were employed to assess liver injury and lipid deposition. Additionally, enzyme-linked immunosorbent assay (ELISA), immunohistochemistry (IHC), immunofluorescence, real-time quantitative polymerase chain reaction (RT-qPCR), and western blotting (WB) analysis were conducted to examine the NLRP3/caspase-1/GSDMD pathway and related cytokine levels.Results:BSP-1 significantly ameliorates alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol (TC), and triglyceride (TG) levels in both rat serum and HepG2 cells. Furthermore, BSP-1 reduces inflammatory factors interleukin (IL)-1β and IL-18, while improving pathological changes in rat liver tissue. Mechanistically, BSP-1 regulates the expression of pyroptosis-related proteins and mRNAs in the NLRP3/caspase-1/GSDMD pathway, thereby protecting against MASLD.Discussion:BSP-1 may represent a promising therapeutic agent for MASLD treatment by inhibiting the NLRP3/caspase-1/GSDMD signaling pathway.
ISSN:	1663-9812
DOI:	1563275
Fuente:	Biological Science Database