瘤微环境响应纳米载体系统用于治疗前列腺癌
Lujing Li1, Renjie Li1, Jiachun Li2
1Department of Ultrasound, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
Journal of materials science. Materials in medicine
|September 22, 2023
概括
新的纳米粒子显示前列腺癌化疗的希望. 这些装有药物的纳米粒子旨在在瘤环境中有效释放药物,改善治疗并减少副作用.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 治疗前列腺癌的传统化疗面临挑战,包括选择性差,生物可用性低和全身副作用.
- 响应刺激的药物递送系统利用瘤微环境特征进行向化疗.
- 开发先进的药物载体对于提高前列腺癌治疗疗效至关重要.
研究的目的:
- 设计和合成用于前列腺癌化疗的新型谷氨 (GSH) 敏感的多乙烯糖纳米颗粒加载多塞塔克塞尔 (DTX).
- 评估开发的纳米粒子的物理化学特性,体外生物相容性和抗瘤功效.
- 探索这些纳米粒子作为前列腺癌向治疗策略的潜力.
主要方法:
- 具有特定尺寸和表面电荷的DTX载荷的聚四乙烯糖醇纳米颗粒 (多TTG-SS@DTXNP) 的合成和特征.
- 在不同度下对纳米颗粒与健康细胞相容性的体外评估.
- 与免费药物和空白载体相比,对C4-2前列腺癌细胞的多TTG-SS@DTXNP的抗瘤作用的评估.
主要成果:
- 聚-TTG-SS@DTX NPs表现出一个纳米直径 (92.8 ± 2.5 nm) 和一个负面电荷 (-24.7 ± 5.56 mV).
- 纳米粒子与健康细胞具有很好的生物相容性,细胞活性在100μg/mL时保持在90%以上.
- 装有药物的纳米颗粒显示出相比于自由dcetaxel (19.93%) 和空白载体 (20.96%),具有显著更强的杀死癌细胞的效果 (25.21%).
结论:
- 对GSH敏感的多TTG-SS@DTXNP为向前列腺癌化疗提供了一个有前途的平台.
- 这些纳米颗粒促进了瘤微环境中的快速和持续的药物释放,增强了抗瘤活性.
- 这种新型药物输送系统代表了改善前列腺癌治疗的治疗策略的潜在进展.
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