口服的胰岛素修饰纳米酶用于CT导向IBD治疗术
Xinwen Li1, Lin Cao1, Jianmin Li2
1Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, People's Republic of China.
International journal of nanomedicine
|February 24, 2025
概括
用胰岛素涂层的氧化纳米颗粒为治疗炎症性肠病 (IBD) 和使用CT成像监测炎症提供了双重方法. 这种创新的治疗方法减少了结肠中的氧化应激和炎症,改善了IBD管理.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 炎症性肠病 (IBD) 是一种慢性疾病,治疗选择有限.
- 过度反应性氧物种 (ROS) 有助于IBD的发病和进展.
- 目前用于IBD诊断和监测的非侵入性成像技术是不理想的.
研究的目的:
- 开发以胰岛素 (IN) 涂层的氧化纳米颗粒 (CeO2@IN NPs) 用于IBD的综合治疗和计算机断层扫描 (CT) 影像应用.
- 在体外评估CeO2@INNP的物理化学性质,ROS清除能力和CT成像能力.
- 为了验证CeO2@IN NPs在硫酸 (DSS) 诱导的大肠炎模型中的治疗和炎症成像疗效.
主要方法:
- 氧化物纳米颗粒 (CeO2@IN NPs) 的合成和表征.
- 在体外评估ROS清除活性和生物相容性.
- 在DSS诱导的大肠炎小鼠模型中的体内评估治疗效果和CT成像性能.
- 评估纳米颗粒通过胃肠道的穿越和结肠中的积累.
主要成果:
- CeO2@IN NPs有效地清除ROS,表现出catalase (CAT) 和超氧化物脱酶 (SOD) 仿真活动,保护细胞免受氧化应激.
- 在大肠炎模型小鼠中,口服的CeO2@INNP到达结肠,减少了肠道炎症,并保持了肠道上皮质完整性.
- 与常规药物相比,CeO2@IN NPs在胃肠道中显示出优异的CT成像对比,特别是在炎症的结肠区域.
- 证实了CeO2@IN NPs在体外和体内生物相容性非常好.
结论:
- CeO2@IN NPs代表了一种新的IBD综合诊断和治疗工具.
- 开发的纳米颗粒显示出在IBD的管理和监测中临床应用的巨大潜力.
- 这种方法为解决IBD治疗和成像中的未满足的临床需求提供了一个有希望的策略.
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