Zhiguo Qin, Xiaofei Li, Peng Wang, Qian Liu, Yan Li, Aihua Gu, Qing Jiang, Ning Gu
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引用次数: 0
摘要
骨关节炎（OA）是一种退行性关节疾病，病因不明，治疗效果不理想，因此迫切需要开发新的高效疗法。过量活性氧（ROS）历来被认为是诱发 OA 病理进展的关键因素之一。超小普鲁士蓝纳米粒子（USPBNPs）通过调节聚乙烯吡咯烷酮链的构型研制而成，大小约为5纳米以下。USPBNPs 具有出色的消除 ROS 能力和类似催化剂的活性，能够将过氧化氢（H2O2）分解为 O2。USPBNPs 的抗炎机制可归因于通过降低 ROS 水平并改善 O2，使巨噬细胞从促炎的 M1 表型恢复到抗炎的 M2 表型。此外，USPBNPs 对 OA 具有令人兴奋的治疗效果，在体内可与氢化可的松相媲美。这项研究不仅开发了一种新的治疗 OA 的药物，还为纳米酶的应用提供了可估计的洞察力。
Ultrasmall Prussian Blue Nanozyme Attenuates Osteoarthritis by Scavenging Reactive Oxygen Species and Regulating Macrophage Phenotype.
Osteoarthritis (OA) is a degenerative joint disease characterized by obscure etiology and unsatisfactory therapeutic outcomes, making the development of new efficient therapies urgent. Superfluous reactive oxygen species (ROS) have historically been considered one of the crucial factors inducing the pathological progression of OA. Ultrasmall Prussian blue nanoparticles (USPBNPs), approximately sub-5 nm in size, are developed by regulating the configuration of polyvinylpyrrolidone chains. USPBNPs display an excellent ROS eliminating capacity and catalase-like activity, capable of decomposing hydrogen peroxide (H2O2) into O2. The anti-inflammatory mechanism of USPBNPs can be attributed to repolarizing macrophages from pro-inflammatory M1 to anti-inflammatory M2 phenotype by decreasing the ROS levels accompanied by O2 improvement. Additionally, USPBNPs exhibit an exciting therapeutic efficiency against OA, comparable to that of hydrocortisone in vivo. This study not only develops a new therapeutic agent for OA but also offers an estimable insight into the application of the nanozyme.
期刊介绍：
ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels.
The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.
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