口服抗氧化剂工程益生菌用于治疗辐射诱导的大肠炎
Rong Sun1, Shuaiwen Li2, Zihui Chen2
1Department of Radiation Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 21000, People's Republic of China.
ACS applied materials & interfaces
|February 10, 2025
概括
一种含的新型益生菌 (EcN-Se@SA) 有效治疗辐射性结肠炎. 这种口服疗法在保护性水凝中使用纳米颗粒来减少炎症并促进结肠中的组织修复.
科学领域:
- 生物医学工程 生物医学工程
- 纳米医学是一种纳米医学.
- 胃肠病学 胃肠病学
背景情况:
- 辐射性结肠炎是盆腔辐射疗法的削弱性副作用,导致严重的炎症和结肠组织损伤.
- 目前对放射性结肠炎的治疗方法有限,需要开发新的治疗策略.
- 纳米颗粒 (Se NPs) 由于其抗氧化,抗炎和组织修复特性而具有前景.
研究的目的:
- 开发和评估一种用于放射性结肠炎的新型口服治疗剂.
- 提高纳米颗粒 (Se NPs) 的传递和疗效,用于治疗辐射诱导的结肠炎症.
- 在临床前模型中研究载益生菌配方的治疗机制.
主要方法:
- 一种含的益生菌配方 (EcN-Se@SA) 是通过将Se NPs与*Escherichia coli*Nissle 1917结合并将它们封装在藻酸盐水凝中来设计的.
- 评估了配方在胃肠道疾病中的稳定性及其结肠保留.
- 在小鼠模型中评估了口服EcN-Se@SA在减轻X射线诱导的结肠炎的疗效,检查了抗氧化剂,抗炎症,巨细胞重编程和铁死抑制.
主要成果:
- 该EcN-Se@SA配方在胃酸和肠液中表现出稳定性,确保在结肠和盲肠中长时间保留.
- 在小鼠中,口服 EcN-Se@SA 显著减轻了X射线诱导的大肠炎.
- 治疗效果归因于配方的抗氧化和抗炎作用,巨细胞表型的调节,以及抑制铁亡.
结论:
- 封装在藻酸盐水凝 (EcN-Se@SA) 中的含益生菌代表了对辐射性结肠炎的有前途的口服治疗策略.
- 这种配方有效地将纳米颗粒输送到结肠,减轻辐射引起的组织损伤.
- EcN-Se@SA提供了一种新的方法,通过多机制的作用来管理辐射性结肠炎,包括抗氧化作用和铁死抑制.
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