基因可编程的蛋白质-生物矿物质核心外纳米导体用于增强瘤微环境激活化疗
Kaiyue Zhang1, Xincheng Sun1, Ting Ji1
1Centre for Regeneration and Cell Therapy, The Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, Zhejiang University, Hangzhou 310058, China.
Materials today. Bio
|January 21, 2026
概括
带有酸外的工程丝弹性类似蛋白质纳米颗粒有效地输送多克索鲁比,显著抑制瘤生长并减少副作用,改善癌症治疗.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 癌症治疗方法 癌症治疗方法
背景情况:
- 化疗面临的局限性包括效率差,选择性低,以及毒性由于药物的溶解性和保留性差.
- 现有的纳米载体与过早的药物泄漏,瘤积累不足和目标外毒性作斗争.
- 迫切需要先进的药物输送系统,在癌症治疗中提供更高的疗效和选择性.
研究的目的:
- 开发一种对瘤有反应的纳米载体,使用基因工程丝弹性类似蛋白 (SELP) 来改善癌症药物输送.
- 为了提高多克索鲁比 (DOX) 装载纳米粒子的稳定性和瘤向能力.
- 在临床前癌症模型中评估新型纳米载体系统的治疗疗效和安全性.
主要方法:
- 经过基因工程改造的两性SELP序列 (S2E3i4Y) 结合了用于瘤细胞向的iRGD.
- 在S2E3i4Y-DOX纳米粒子 (S2E3i4Y@CaP-DOX) 周围制造酸 (CaP) ,以防止药物过早泄漏.
- 在4T1瘤模型中S2E3i4Y@CaP-DOX系统的体内评估.
主要成果:
- 这些S2E3i4Y@CaP-DOX纳米颗粒显示了由酸性瘤微环境触发的可控多克索鲁比释放.
- 与自由 doxorubicin 相比,纳米载体系统表现出增强的瘤特异性积累和延长的保留时间.
- 在4T1模型中,通过S2E3i4Y@CaP-DOX系统实现了显著的瘤抑制 (75.9%),没有观察到副作用.
结论:
- 核心外基于SELP的纳米平台 (S2E3i4Y@CaP-DOX) 提供了一种生物相容和高效的方法,用于对瘤反应的药物输送.
- 这种新的系统克服了传统化疗和现有的纳米载体的局限性,提高了治疗的安全性和有效性.
- 开发的纳米平台为精确和增强的癌症治疗提供了一个有前途的战略.
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