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纳米结构的有机薄膜隔离小细胞外囊泡和反应性物种,以防止辐射诱导的粘膜炎
Yuefei Zhu1,2, Changyi Xu3,4, Zhixin Li1,4
1Department of Otolaryngology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510655, Guangdong, China.
Nature communications
|July 3, 2025
概括
研究人员开发了新的有机纳米薄膜来捕获炎症囊泡,显著减少了头癌患者的辐射诱导粘膜炎. 这种有针对性的方法为管理治疗副作用提供了一个有希望的新疗法.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 免疫学 免疫学 免疫学
背景情况:
- 头癌的放射治疗导致粘膜炎,严重影响患者的生活质量.
- 辐射暴露会升高携带双链DNA的炎症性小细胞外囊泡 (sEV),引发过度的炎症.
- 目前对辐射诱导的粘膜炎的治疗方法有限.
研究的目的:
- 开发一种用于捕获炎症性sEVs的新型治疗平台,以减轻辐射诱导的粘膜炎.
- 研究功能化有机纳米片在向和中和炎症性SEVs方面的有效性.
- 在临床前模型中评估这些纳米片的抗炎作用和治疗潜力.
主要方法:
- 基于模板的合成纳米结构有机板功能化CD63的aptamers为选择性的SEV准.
- 与球形纳米粒子相比,纳米薄膜囊泡结合能力的体外评估.
- 使用被辐射的动物模型进行体内研究,以评估粘膜炎的缓解.
- 流细胞计和转录组分析以阐明分子机制.
主要成果:
- 功能化的有机纳米片显示出增强捕获炎症细胞外囊泡的能力.
- 纳米薄膜通过抑制巨细胞中干扰素基因激活的刺激剂来有效抑制炎症.
- 这些纳米薄膜清理了反应性氧和物种,进一步减少了粘膜炎症.
- 在动物模型中证实了辐射诱导的粘膜炎的显著缓解.
结论:
- 生物材料几何和表面功能可以调节sEV介导的炎症.
- 功能化有机纳米片代表了辐射诱导的粘膜炎的有前途的治疗策略.
- 这个平台提供了一种新的方法来管理癌症放射治疗的严重副作用.
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