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Porous Silicon Microparticles for Delivery of siRNA Therapeutics
Published on: January 15, 2015
多功能登德罗化聚合物平台,提供安全有效的siRNA输送
Hanxiang Zeng1, Hannah C Little, Timothy N Tiambeng
1Department of Chemistry, 1102 Natural Sciences 2, University of California, Irvine , California 92697-2025, United States.
Journal of the American Chemical Society
|March 19, 2013
概括
研究人员开发了一种可生物降解的丹德罗化聚 (denpol),用于有效的小干扰RNA (siRNA) 传递. 这种新的平台显示出高效率和低毒性,在血清条件下优于现有方法.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 分子生物学分子生物学
背景情况:
- RNA干扰 (RNAi) 疗法需要高效和安全的输送系统.
- 目前的传递载体通常面临着稳定性,毒性和生物流体中的有效性方面的挑战.
研究的目的:
- 设计和合成一种新的可生物降解的基聚 (denpol) 平台,用于增强小干扰RNA (siRNA) 传递.
- 优化denpol架构,以改善siRNA结合,细胞吸收和内分体逃逸.
- 评估开发的denpol系统的体外有效性和安全性.
主要方法:
- 合成具有多功能氨基酸的可生物降解的丹化聚 (denpols).
- 系统和组合调整denpol结构以优化siRNA复杂化和传递.
- 在体外转移NIH 3T3细胞与siRNA使用denpol载体.
- 细胞毒性的评估和与商业传染剂 (如Lipofectamine) 的比较.
- 使用光显微镜来阐明传递机制的细胞内贩运研究.
主要成果:
- 确定了几个denpol候选物,证明有效的siRNA传递到NIH 3T3细胞具有最小的毒性.
- 与Lipofectamine相比,denpol候选物在含有血清的介质中表现出明显更高的传染效率.
- 丹波的两性被发现对细胞吸收至关重要.
- 希斯蒂丁的缓冲能力被证明可以促进内体体逃逸,增强传染.
结论:
- 开发的可生物降解的denpol平台为siRNA输送提供了一个有前途且高效的系统.
- 丹波尔系统在含有血清的介质中表现出卓越的性能,并且具有较低的细胞毒性.
- 这种新型载体有可能推进基于RNAi的治疗方法.
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