h CeO 2 @ Cu 5.4 O nanoparticle alleviates inflammatory responses by regulating the CTSB-NLRP3 signaling pathway

Inflammatory responses, especially chronic inflammation, are closely associated with many systemic diseases. There are many ways to treat and alleviate inflammation, but how to solve this problem at the molecular level has always been a hot topic in research. The use of nanoparticles (NPs) as anti-i...

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Bibliographic Details
Published in:Frontiers in immunology 2024, Vol.15, p.1344098
Main Authors: Li, Ying, Xia, Xiaomin, Niu, Zhaojun, Wang, Ke, Liu, Jie, Li, Xue
Format: Article
Language:English
Subjects:
Animals
Anti-Inflammatory Agents - pharmacology
Cerium - chemistry
Cerium - pharmacology
Copper
Inflammasomes - drug effects
Inflammasomes - metabolism
Inflammation - drug therapy
Inflammation - metabolism
Macrophages - drug effects
Macrophages - immunology
Macrophages - metabolism
Mice
Nanoparticles
NLR Family, Pyrin Domain-Containing 3 Protein - metabolism
RAW 264.7 Cells
Reactive Oxygen Species - metabolism
Signal Transduction - drug effects
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Summary:Inflammatory responses, especially chronic inflammation, are closely associated with many systemic diseases. There are many ways to treat and alleviate inflammation, but how to solve this problem at the molecular level has always been a hot topic in research. The use of nanoparticles (NPs) as anti-inflammatory agents is a potential treatment method. We synthesized new hollow cerium oxide nanomaterials ( CeO NPs) doped with different concentrations of Cu O NPs [the molar ratio of Cu/(Ce + Cu) was 50%, 67%, and 83%, respectively], characterized their surface morphology and physicochemical properties, and screened the safe concentration of CeO @Cu O using the CCK8 method. Macrophages were cultured, and -lipopolysaccharide-stimulated was used as a model of inflammation and co-cultured with CeO @Cu O NPs. We then observe the effect of the transcription levels of CTSB, NLRP3, caspase-1, ASC, IL-18, and IL-1β by PCR and detect its effect on the expression level of CTSB protein by Western blot. The levels of IL-18 and IL-1β in the cell supernatant were measured by enzyme-linked immunosorbent assay. Our results indicated that CeO @Cu O NPs could reduce the production of reactive oxygen species and inhibit CTSB and NLRP3 to alleviate the damage caused by the inflammatory response to cells. More importantly, CeO @Cu O NPs showed stronger anti-inflammatory effects as Cu O NP doping increased. Therefore, the development of the novel nanomaterial CeO @Cu O NPs provides a possible new approach for the treatment of inflammatory diseases.
ISSN:1664-3224