在水凝中稳定氧气微泡的配方和评估,以强化放射治疗
Ashok David Jose1, Celine Hui-Ning Chong1, Ernest Cheah1
1School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
International journal of pharmaceutics
|March 10, 2025
概括
这项研究在水凝中开发了氧化微泡来重新氧化瘤,在低氧和正常的条件下显著提高了癌细胞放射治疗的有效性.
科学领域:
- 生物医学工程 生物医学工程
- 癌症治疗 癌症治疗
- 药物输送系统 药物输送系统
背景情况:
- 瘤缺氧是癌症治疗的一个主要障碍,减少对治疗的敏感性.
- 再氧化瘤可以提高它们对常规治疗的敏感性.
- 氧化微气泡 (OMB) 提供瘤再氧化的潜力,但存在稳定性问题.
研究的目的:
- 在热敏水凝 (OMBHG) 中嵌入氧化微泡的配方和评估.
- 在瘤缺氧的体外模型中评估OMBHG的疗效.
- 研究OMBHG对癌细胞放射治疗敏感性的影响.
主要方法:
- 氧化微气泡 (OMB) 由脂质体前体产生的.
- OMB被分散在一个波洛克萨姆热敏水凝 (OMBHG) 中.
- 评估了OMB大小,水凝特性,氧气释放以及对HCT116结肠癌细胞在低氧和正常氧条件下的放射治疗反应的影响.
主要成果:
- OMBHG配方是可注射的,并表现出热敏凝.
- 与单独使用OMB相比,OMBHG显示出更高的氧气负载和长时间释放.
- 用OMBHG进行预治疗显著提高了放射治疗的疗效,恢复了低氧细胞对诺莫克斯水平的敏感性.
结论:
- 新的OMBHG配方有效地重新氧化并使癌细胞对体外放射治疗敏感.
- 这种方法有望通过克服瘤缺氧来改善癌症治疗结果.
- 进一步的研究正在进行中,以优化再氧化参数,以实现最大的瘤敏感化.
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