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β-环氧德克斯纳米光敏剂用于对e6的回氧敏感输送
Jaewon Jo1,2, Ji Yoon Kim1, Je-Jung Yun3
1Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Republic of Korea.
Molecules (Basel, Switzerland)
|November 14, 2023
概括
这项研究开发了用于向宫癌治疗的氧化还原敏感纳米光敏剂. 新型bCDsu-ss-Ce6纳米颗粒证明了药物递送的增强,效率的提高和瘤特异性的积累,提供了一个有前途的新治疗策略.
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:
- 有针对性的药物输送系统对于提高癌症治疗效率和减少副作用至关重要.
- e6 (Ce6) 是用于光动力学疗法 (PDT) 的光敏剂,但其传递和特异性可能具有挑战性.
- 红氧敏感系统有可能在瘤微环境中控制药物释放.
研究的目的:
- 准备新型氧化还原敏感纳米光敏剂,用于e6 (Ce6) 针对宫癌的向输送.
- 评估这些纳米光敏感剂在癌症治疗中的体外和体内性能.
主要方法:
- 通过二硫化键将Ce6与β-cyclopodextrin (bCD) 结合,以产生bCDsu-ss-Ce6纳米光敏剂.
- 使用透析程序制造纳米光敏剂,其特点是颗粒大小和化学成分 (NMR).
- 在实验室中评估对氧化还原敏感的Ce6释放,细胞吸收,活性氧物种 (ROS) 生产以及HeLa宫癌细胞和纤维细胞中的光毒性.
- 在瘤异种移植模型中的体内评估,以评估瘤积累和抗癌活性.
主要成果:
- bCDsu-ss-Ce6纳米光敏剂成功合成,平均颗粒大小为152.0 ± 23.2 nm.
- 添加谷氨酸 (GSH) 加快了Ce6的释放,证实了对氧化还原敏感的输送.
- 与单独使用Ce6相比,体外研究显示Ce6吸收,ROS生成和癌细胞中的光毒性增强,对正常细胞的细胞毒性较低.
- 在体内研究表明bCDsu-ss-Ce6纳米光敏感剂的有效瘤积累,明显高于单独的Ce6,导致有效的瘤生长抑制.
结论:
- 开发的bCDsu-ss-Ce6纳米光敏剂为宫癌的向Ce6输送提供了一个有效的氧化还原敏感平台.
- 这些纳米光敏感剂表现出增强的抗癌活性和瘤特异性积累,表明它们作为宫癌新型治疗剂的潜力.
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