多种药物的X射线触发激活,用于协同作用的放射化疗
Yufei Cao1, Moujiang Zheng1, Jiahong Shi2
1School of Chemistry, Xi'an Key Laboratory of Sustainable Polymer Materials, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
Biomacromolecules
|December 27, 2024
概括
这项研究引入了充满脊柱素 (VP) 的pH和ROS响应性细胞,以增强癌症中的X射线诱导光动力学疗法 (XPDT). 细胞通过协同放射化学疗法改善药物输送和瘤切除.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 射线诱导光动力学疗法 (XPDT) 提供深层组织透,但受到有限的活性氧物种 (ROS) 生成的影响.
- 提高ROS的产生对于提高XPDT在癌症治疗中的疗效至关重要.
研究的目的:
- 为增强XPDT开发瘤pH和ROS响应的多种药物菌株.
- 通过将XPDT与化疗结合使用一种新型药物输送系统来改善癌症治疗.
主要方法:
- 合成的PEG-b-P ((CPTKMA-co-PEMA) 阻断共聚合物多种药物菌体.
- 封装的X射线光敏感剂维特波芬 (VP) 具有高负载效率.
- 研究了pH触发的电荷转换以增强细胞吸收和X射线诱导的ROS生成以释放药物.
主要成果:
- 在自组装的米塞尔中实现了高的VP加载效率 (67%).
- 证明了依赖pH的泽塔电位转移,改善了细胞内化.
- 在X射线照射后展示了高效的ROS生成和坎普托西因 (CPT) 释放.
- 载有VP的小粒通过协同放射化疗有效地切除了瘤.
结论:
- 开发的多种药物菌根为增强癌症放射化疗提供了一个有前途的战略.
- 该系统利用深度X射线透,增强ROS生成,并触发药物释放以有效地切除瘤.
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