一种超响应pH的类纳米载体,用于癌症基因治疗
Zixuan Wang1, Xuelin Zhang1, Mingshan Han1
1School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China. wangyuefei@tju.edu.cn.
Journal of materials chemistry. B
|September 13, 2023
概括
研究人员开发了一种新型的pH响应纳米载体,用于有效地输送核酸药物. 这种先进的载体通过提高基因和免疫疗法的转染效率和溶酶体逃逸来改善癌症治疗.
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:
- 由于其复杂和动态的性质,瘤微环境为药物输送带来了独特的挑战.
- 现有的用于核酸输送的pH响应性通常表现出有限的转染效率和较差的溶解体逃逸.
- 这些局限性阻碍了基因治疗和免疫治疗在癌症治疗中的有效应用.
研究的目的:
- 开发一种超响应pH的化物纳米载体,有效地将siRNA,pDNA和mRNA输入癌细胞.
- 克服现有的载体的局限性,特别是低的传染效率和较差的溶酶体逃逸.
- 为先进的癌症疗法,包括基因疗法和免疫疗法创建一个多功能平台.
主要方法:
- 设计了一种具有进步动态组装能力的新纳米载体.
- 设计了纳米载体,以响应瘤微环境 (pH 6.5-6.8) 和溶酶体环境 (pH 5.0-6.0) 的pH变化.
- 在纳米载体表面嵌入了准序列,以增强细胞吸收.
主要成果:
- 获得了pDNA的87.1%和mRNA的74.9%的最大转染效率,超过了现有的基于的纳米载体.
- 证明了@siRNA复合物的有效进入癌细胞,导致96%的癌细胞死亡率.
- 证实了开发的纳米载体的高生物相容性和低细胞毒性.
结论:
- 与当前技术相比,开发的超pH响应型纳米载体在输送核酸药物方面提供了卓越的性能.
- 纳米载体对双重pH环境 (瘤和溶酶体) 的反应能力提高了其治疗潜力.
- 这一创新平台对癌症免疫疗法和基因疗法的进步具有重大前景.
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